A core box device with embedded chill

Abstract

The utility model belongs to walking motor front shell sand core technical field discloses a core box device of inlaying cold iron, including fixed mould and movable mould, is provided with the baffle lever and reset lever on fixed mould, baffle lever and reset lever are connected through the connecting plate, the recess of inlaying strong magnet is equipped in fixed mould inside, the clamping groove of clamping cold iron is set up on movable mould, baffle lever sets up two groups above, and presents symmetrical arrangement and distribution in fixed mould both sides, strong magnet is inlayed in the recess between baffle lever, and the magnetic attraction surface of strong magnet is flush with the working surface of fixed mould, the clamping groove sets up U type structure, and the opening direction of clamping groove is consistent with the closing direction of movable mould, reset lever tip is provided with elastic reset element, and elastic reset element and movable mould form elastic contact structure, the depth of clamping groove of movable mould is set as 1 / 3-1 / 2 of cold iron thickness, and cold iron and sand core form the wrapped stripping structure. The utility model not only is convenient for placing cold iron, can inlay cold iron in sand core, solves the problem of local shrinkage, and can improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of sand core technology for the front housing of a walking motor, and in particular to a core box device with embedded chills. Background Technology

[0002] Excavator travel motors are essential hydraulic components in the hydraulic systems of construction machinery, and the market demand is very large. If the front housing casting of the motor has shrinkage porosity, it will not only affect the performance of the travel part, but also pose a great safety hazard.

[0003] Currently, most motor front housings use a side riser feeding process, which cannot feed isolated hot spots at the bottom. It is necessary to embed chills in the sand core for separate feeding. However, it is difficult to fix the position of the embedded chills in the sand core to achieve the feeding effect. Therefore, we propose a core box device with embedded chills. Utility Model Content

[0004] In view of the aforementioned problem of difficulty in fixing the position of existing chills, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A core box device with embedded chills includes a fixed mold and a moving mold. The fixed mold is provided with a stop bar and a reset bar that can move synchronously. The stop bar and the reset bar are connected by a connecting plate. The fixed mold has a groove for embedding a strong magnet inside. The moving mold has a slot for securing the chill.

[0006] As a technical solution of the core box device with embedded chills described in this utility model, the baffles are configured in two or more sets and are symmetrically distributed on both sides of the fixed mold.

[0007] As a technical solution of the core box device with embedded chill described in this utility model, the strong magnet is embedded in the groove between the stop bars, and the magnetic attraction surface of the strong magnet is flush with the working surface of the fixed mold.

[0008] As a technical solution of the core box device with embedded chill described in this utility model, the slot is configured as a U-shaped structure, and the opening direction of the slot is consistent with the closing direction of the moving mold.

[0009] As a technical solution of the core box device with embedded chill described in this utility model, wherein: the end of the reset rod is provided with an elastic reset element, and the elastic reset element cooperates with the moving mold to form an elastic contact structure.

[0010] As a technical solution of the core box device with embedded chill described in this utility model, the groove depth of the moving mold is set to 1 / 3-1 / 2 of the thickness of the chill, and the chill and the sand core form a wrap-around demolding structure.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model solves the technical problem of easy displacement of chills in sand cores through a dual locking mechanism of magnetic pre-positioning and mechanical locking, and improves the positioning accuracy, so that the chills can effectively act on isolated hot spot areas.

[0012] 2. This utility model, through the synergistic effect of the linkage mechanism and the elastic reset structure, can transform the cold iron positioning and demolding processes that originally required manual intervention into automated processes, thereby shortening the single-piece production cycle and improving the yield rate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the planar structure of this utility model from one perspective.

[0014] Figure 2 This is a schematic diagram of the planar structure of this utility model from another perspective.

[0015] Figure 3 This is a schematic diagram of the AA-view cross-section structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the BB view cross-section structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the cross-sectional structure of this utility model from a CC perspective.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 1. Fixed mold; 2. Connecting plate; 3. Stop bar; 4. Reset bar; 5. Chill; 6. Strong magnet; 7. Moving mold; 8. Slot. Detailed Implementation

[0019] 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.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0022] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] Reference Figures 1-5 A core box device with embedded chills is provided. This core box device with embedded chills includes a fixed mold 1 and a moving mold 7. The fixed mold 1 is provided with a stop bar 3 and a reset bar 4 that can move synchronously. The stop bar 3 and the reset bar 4 are connected by a connecting plate 2. The fixed mold 1 has a groove for inserting a strong magnet 6. The moving mold 7 has a slot 8 for securing the chill 5. In application, the synchronous movement design of the stop bar 3 and the reset bar 4 linked by the connecting plate 2, combined with the magnetic groove and the U-shaped slot 8 structure, solves the problem of precise positioning of the chill 5 in the sand core, and realizes the synchronous wrapping and forming of the chill 5 and the sand core when the mold is closed.

[0024] Reference Figure 1 and Figure 5 The baffles 3 are set in two or more groups and are symmetrically distributed on both sides of the fixed mold 1. In application, the symmetrically distributed baffles 3 groups form a multi-point support structure, which effectively balances the mold closing pressure and prevents the chills 5 from tilting during the filling process. It is especially suitable for casting large-size motor front housings.

[0025] Reference Figure 1 , Figure 3 as well as Figure 5 The powerful magnet 6 is embedded in the groove between the stop rods 3, and the magnetic attraction surface of the powerful magnet 6 is flush with the working surface of the fixed mold 1. In application, the special design of the magnetic attraction surface being flush with the working surface of the fixed mold 1 not only avoids the powerful magnet 6 protruding and affecting the sand core forming, but also assists the chill 5 in pre-positioning through magnetic attraction, so that the embedding accuracy of the chill 5 can reach ±0.1mm.

[0026] Reference Figure 2 and Figure 4 The slot 8 is set as a U-shaped structure, and the opening direction of the slot 8 is consistent with the mold closing direction of the moving mold 7. In application, the special opening of the U-shaped slot 8 in the same direction as the mold closing direction enables the chill 5 to generate a self-locking effect under the filling pressure, and at the same time can reduce the displacement of the chill 5.

[0027] Reference Figure 1 and Figure 3 The end of the reset rod 4 is provided with an elastic reset element. The elastic reset element and the moving mold 7 cooperate to form an elastic contact structure. In application, the design of the elastic reset element and the moving mold 7 automatically releases the cold iron 5 from the wrapping state when the mold is opened, simplifying the manual adjustment required by the traditional process into automatic completion, thereby improving the demolding efficiency.

[0028] Reference Figure 1 , Figure 2 and Figure 4 The depth of the groove 8 of the moving mold 7 is set to 1 / 3-1 / 2 of the thickness of the chill 5, and the chill 5 and the sand core form a wrap-around demolding structure. In application, the wrap-around demolding structure and the depth-optimized groove 8 enable the chill 5 to form a mechanical interlock in the sand core, thereby reducing the shrinkage rate of isolated hot spots.

[0029] The working principle of this utility model is as follows: When the core box is opened, the chill 5 is placed between the baffles 3, and the strong magnet 6 between the baffles 3 attracts the chill 5 to prevent it from falling off. When the core box is closed, the moving mold 7 pushes out the reset rod 4. The stop rod 3 and the reset rod 4 are connected by the connecting plate 2 and pushed out at the same time. At the same time, the slot 8 on the moving mold 7 holds the chill 5 in place and fixes its position. When the core injection is complete, the sand core will enclose the chill 5 together and be demolded.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A core box device with an embedded chill, characterized in that: It includes a fixed mold (1) and a moving mold (7). The fixed mold (1) is provided with a stop bar (3) and a reset bar (4) that can move synchronously. The stop bar (3) and the reset bar (4) are connected by a connecting plate (2). The fixed mold (1) has a groove for inserting a strong magnet (6) inside. The moving mold (7) has a slot (8) for securing a chill (5).

2. The core box device with embedded chills according to claim 1, characterized in that: The stop bar (3) is set in two or more groups and is symmetrically distributed on both sides of the fixed mold (1).

3. The core box device with embedded chills according to claim 1, characterized in that: The powerful magnet (6) is embedded in the groove between the stop bars (3), and the magnetic attraction surface of the powerful magnet (6) is flush with the working surface of the fixed mold (1).

4. The core box device with embedded chills according to claim 1, characterized in that: The slot (8) is configured as a U-shaped structure, and the opening direction of the slot (8) is consistent with the closing direction of the moving mold (7).

5. The core box device with embedded chills according to claim 1, characterized in that: The end of the reset rod (4) is provided with an elastic reset element, which cooperates with the moving mold (7) to form an elastic contact structure.

6. The core box device with embedded chills according to claim 1, characterized in that: The depth of the groove (8) of the moving mold (7) is set to 1 / 3-1 / 2 of the thickness of the chill (5), and the chill (5) and the sand core form a wrap-around demolding structure.

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