Core bar design structure of axle housing cold core box
By designing the core bone structure in the bridge shell cold core box and using the coordinated fixation of the positioning groove and the positioning sand core, the deformation and fracture problems of the bridge shell sand core in the core making, transportation and casting process are solved, and the stability of the bridge shell sand core and the quality of the casting are improved.
Patent Information
- Application Number
- CN202422219830.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The bridge shell sand core is thick and large in the middle bridge wrap, and the two ends are thin and weak, which is easy to deform or break during core making, transportation and casting, affecting the quality of the casting.
A core bone structure of a bridge shell cold core box is designed. One end of the core bone is placed in the positioning groove and the other end is placed in the semicircular groove of the positioning sand core. It is fixed by the coordination between the positioning groove and the positioning sand core to support the bridge shell sand core to prevent deformation and fracture.
Through the support of the core bone, the bridge shell sand core is prevented from deforming and breaking during core making, transportation and casting, and ensure the quality of the casting.
Smart Images
Figure CN223056654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core manufacturing, in particular to a core bone design structure of a bridge shell cold core box. Background Technique
[0002] In casting production, cores are generally used. The functions of the cores are as follows: forming the inner cavity and holes of the casting. For some inner cavities with complex shapes, cores must be used to form them, which is an extremely important function of the cores; forming the outer shape of the casting. For castings with complex outer shapes, such as those with many bosses and bumps that hinder mold removal and are not easy to disassemble the loose pieces, as well as those with complex curved surface shapes, when it is difficult to make the outer mold, cores are often used to form the outer shape of the casting. Strengthening the strength of the local sand mold. When pouring large and medium-sized castings, the sprue is generally very high, the scouring force of the metal is very large, and the scouring time for the same place is also relatively long. The cores in these places are often washed out due to insufficient strength. Therefore, in order to ensure the quality of the casting and prevent defects such as scouring, high-strength core blocks are often embedded in the places with stronger scouring force.
[0003] In a part of the bridge shell core, the core in the middle bridge bag part is thick and large, while the cores at both ends are very thin. The strength of the thinner parts at both ends is insufficient, which easily causes the core to deform or even break during core making, transportation, and casting.
[0004] For this reason, we propose a core bone design structure of a bridge shell cold core box. Content of the Utility Model
[0005] The applicant of the present utility model aims at the above-mentioned shortcomings in the existing production technology and provides a core bone design structure of a bridge shell cold core box. One end of the core bone is placed in the positioning groove, and the other end of the core bone is placed in the semi-circular groove of the positioning core. The core bone is fixed through the cooperation of the positioning groove and the positioning core. Core bones are placed at both ends of the bridge shell core box. The upper core box is covered and clamped, and sand is injected to form the bridge shell core. The core bone and the positioning core are located in the bridge shell core to support the bridge shell core and prevent the bridge shell core from deforming and breaking.
[0006] The technical solution adopted by the present utility model is as follows:
[0007] A core bone design structure of a bridge shell cold core box, comprising:
[0008] It is further characterized in that:
[0009] The bridge shell core box is provided with a main core box for placing the positioning core.
[0010] A placement groove is provided at the top of the main core box, and the positioning core is placed in the placement groove.
[0011] Four placement grooves are provided at the top of the main core box, and a positioning core is placed in each placement groove.
[0012] The core frame is made of steel pipes.
[0013] The cross-section of the core frame is circular.
[0014] The size of the positioning core sand gradually decreases from the middle to both ends in the vertical direction.
[0015] The beneficial effects of the present utility model are as follows:
[0016] The structure of the present utility model is compact and reasonable, and it is convenient to operate. Take the positioning core sand from this core box, place the positioning core sand in the axle housing core box, and make the center of the semi-circular groove at the top of the positioning core sand and the center of the positioning groove be on the same axial line; then place the core frame in the axle housing core box, one end of the core frame is placed in the positioning groove, and the other end of the core frame is placed in the semi-circular groove of the positioning core sand. The core frame is fixed through the cooperation of the positioning groove and the positioning core sand. Core frames are placed at both ends of the axle housing core box, cover the upper core box and close the mold, and perform sand shooting to form the axle housing core sand. The core frame and the positioning core sand are in the axle housing core sand, supporting the axle housing core sand to prevent the axle housing core sand from deforming and breaking. Description of the Drawings
[0017] Figure 1 It is a schematic structural diagram of the present utility model.
[0018] Figure 2 It is Figure 1 The enlarged schematic diagram at A in
[0019] Figure 3 It is a schematic diagram of the axle housing core sand of the present utility model.
[0020] Figure 4 It is a schematic diagram of this core box of the present utility model.
[0021] Figure 5 It is a schematic diagram of the positioning core sand of the present utility model.
[0022] Figure 6 It is Figure 5 The front view of
[0023] Figure 7 It is Figure 5 The side view of
[0024] Wherein: 1. Axle housing core box; 101. Core frame; 102. Positioning core sand; 103. This core box; 104. Positioning groove; 2. Axle housing core sand. Detailed Embodiment
[0025] The following combines the drawings to illustrate the detailed embodiment of the present utility model.
[0026] As Figures 1 - 7As shown in the figure, a core frame design structure of a bridge shell cold box includes a bridge shell core box 1 and this core box 103. Positioning grooves 104 are provided at both ends of the bridge shell core box 1. The positioning grooves 104 are semi-circular and are used to prevent the core frame 101.
[0027] This core box 103 is arranged in the bridge shell core box 1. A plurality of placement grooves are provided in this core box 103, and positioning core sands 102 are placed in the placement grooves. A semi-circular groove is provided at the top of the positioning core sand 102 for placing the core frame 101. The positioning core sand 102 has positive and negative slopes, that is, in the vertical direction, the size of the positioning core sand 102 gradually decreases from the middle to both ends, and it can be well integrated with the bridge shell core sand 2.
[0028] The number of placement grooves on the top of this core box 103 can be set according to the number of required positioning core sands 102. This core box 103 can be provided with four placement grooves, and positioning core sands 102 are provided in all four placement grooves.
[0029] The core frame 101 can be made of steel pipes. The core frame 101 has strong strength and rigidity. The core frame 101 is made inside the bridge shell core sand 2 to support the bridge shell core sand 2 and prevent the bridge shell core sand 2 from deforming and breaking. The cross-section of the core frame 101 is circular.
[0030] During specific use, take the positioning core sand 102 out of this core box 103, place the positioning core sand 102 in the bridge shell core box 1, and make the center of the semi-circular groove at the top of the positioning core sand 102 and the center of the positioning groove 104 on the same axis; then put the core frame 101 into the bridge shell core box 1. One end of the core frame 101 is placed in the positioning groove 104, and the other end of the core frame 101 is placed in the semi-circular groove of the positioning core sand 102. The core frame 101 is fixed through the cooperation of the positioning groove 104 and the positioning core sand 102. Core frames 101 are placed at both ends of the bridge shell core box 1. Cover the upper core box and close the mold, and inject sand to form the bridge shell core sand 2. The core frame 101 and the positioning core sand 102 are in the bridge shell core sand 2 to support the bridge shell core sand 2 and prevent the bridge shell core sand 2 from deforming and breaking.
[0031] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims. Any form of modification can be made within the protection scope of the present invention.
Claims
1. A core bone design structure of a bridge shell cold box, characterized in that, Including: A bridge housing core box (1) with positioning grooves (104) provided at both ends thereof; A positioning core (102) placed in the bridge housing core box (1), with a semi-circular groove provided at the top of the positioning core (102); A core frame (101) placed in the bridge housing core box (1), one end of the core frame (101) is placed in the positioning groove (104), and the other end of the core frame (101) is placed in the semi-circular groove of the positioning core (102), for supporting the bridge housing core (2) to prevent the bridge housing core (2) from deforming and breaking.
2. The core bone design structure of a bridge housing cold box as described in claim 1, characterized in that: The bridge housing core box (1) is provided with a main core box (103) for placing the positioning core (102).
3. The core bone design structure of a bridge housing cold box as described in claim 2, characterized in that: The main core box (103) is provided with a placement groove at the top, and the positioning core (102) is placed in the placement groove.
4. The core bone design structure of a bridge shell cold box as described in claim 3, characterized in that: The main core box (103) is provided with four placement grooves at the top, and a positioning core (102) is placed in each placement groove.
5. The core bone design structure of a bridge shell cold box as described in claim 1, characterized in that: The core frame (101) is made of steel pipe.
6. The core bone design structure of a bridge housing cold box as described in claim 5, characterized in that: The cross-section of the core frame (101) is circular.
7. The core bone design structure of a bridge housing cold box as described in claim 1, characterized in that: The positioning core (102) gradually decreases in size from the middle to both ends in the vertical direction.