Die structure for solving deformation of cylinder cover casting

Abstract

The utility model discloses a mould structure for solving cylinder cover casting deformation, which comprises a mould frame, a cavity is arranged in the mould frame, a lower cover plate lower mould is movably mounted in the cavity, a combustion chamber loose piece is detached from each combustion chamber on the lower cover plate lower mould, the combustion chamber loose piece comprises a loose piece body, the loose piece body is provided with a plurality of loose piece body fixing column-shaped counter bores, and the loose piece body fixing column-shaped counter bores are arranged in the cavity. A fixing bolt is screwed into the movable block body fixing cylindrical counter bore to fix the movable block body on a lower cover plate lower pattern, the movable block body is further provided with an insert fixing cylindrical counter bore, and a core head insert is installed in the insert fixing cylindrical counter bore and fixed on the movable block body through an air needle screw. The size of the mold can be accurately adjusted, so that the size precision of a casting is guaranteed, the size precision of six combustion chambers of the methanol cylinder cover reaches + / -0.5 mm, meanwhile, the manufacturing cost can be reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinder head casting, and particularly relates to a mold structure for solving the deformation of cylinder head castings. Background Art

[0002] Cylinder head products adopt a full core production process. Due to the influence of product structure, the deformation of the combustion surface of cylinder head products is ±1.5mm. The deformation of the combustion surface of a certain new energy cylinder head is required to be ±0.5mm. It is a new type of product with higher dimensional precision requirements for cylinder head products.

[0003] Most of the cylinder head products have upper and lower cover plates made of integral molds. Local reverse deformation is done to solve the deformation problem of cylinder head castings. Due to different product materials and casting processes, each batch of products has different deformations. The mold has to be adjusted according to the deformation of each batch, which results in high production costs, production cycles and expenses. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a mold structure for solving the deformation of cylinder head castings.

[0005] The technical solution adopted by the utility model is: a mold structure for solving the deformation of cylinder head castings, including a mold frame, a cavity is movably installed with a lower cover plate lower mold in the mold frame, each combustion chamber on the lower cover plate lower mold is removed from a combustion chamber live block, the combustion chamber live block includes a live block body, the live block body is provided with a plurality of live block body fixed cylindrical countersunk holes, fixing bolts are screwed into the live block body fixed cylindrical countersunk holes to fix the live block body on the lower cover plate lower mold, the live block body is also provided with an insert fixed cylindrical countersunk hole, a core head insert is installed in the insert fixed cylindrical countersunk hole, and it is fixed to the live block body by an air needle screw.

[0006] Furthermore, two cavities are provided on the pattern frame, one of which is movably mounted with the lower pattern of the lower cover plate, and the other is movably mounted with the lower pattern of the upper cover plate.

[0007] Furthermore, the movable block body is provided with four fixed cylindrical countersunk holes, two of which are located at the lowest point of the combustion chamber pattern and are symmetrical with the center line of the combustion chamber pattern, and the other two are located on the flat inclined surface of the combustion chamber pattern and on the center line of the combustion chamber pattern.

[0008] Furthermore, the movable block body is located on the flat inclined surface of the combustion chamber shape and has a fixed cylindrical countersunk hole which is perpendicular to the flat inclined surface of the combustion chamber shape.

[0009] Furthermore, the combustion chamber movable block is an octagonal movable block removed at a certain distance from the upper rounded corner of the combustion chamber pattern, and the side of the octagon is provided with a round chamfer.

[0010] The utility model has the following beneficial effects:

[0011] 1. The six combustion chambers of the methanol cylinder head are made into a quick-change movable block structure, and the size of the six combustion chambers of the casting can be adjusted by quickly adjusting the height of the movable block of the combustion chamber, so as to achieve the purpose of adjusting the size of the casting combustion chamber. The mold size can be accurately adjusted to ensure the dimensional accuracy of the casting, and the dimensional accuracy of the six combustion chambers of the methanol cylinder head is achieved to ±0.5mm;

[0012] 2. It can reduce production costs and improve work efficiency;

[0013] 3. The lower pattern of the lower cover is adjusted to a movable block structure. The movable block part is dedicated to each product and can be quickly switched and adjusted with the pattern frame for use, which can reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a cutaway schematic diagram of the combustion chamber movable block of the utility model;

[0016] Figure 3 It is a schematic diagram of the combination of the lower cover plate and the combustion chamber movable block of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the combustion chamber movable block of the utility model;

[0018] Figure 5 It is a front view of the movable block body of the utility model;

[0019] Figure 6 It is a side view of the movable block body of the utility model;

[0020] Figure 7 It is a bottom view of the movable block body of the utility model.

[0021] In the figure: 1. Model frame; 2. Model below the upper cover plate; 3. Model below the lower cover plate; 4. Combustion chamber movable block; 41. Movable block body; 411. Columnar countersunk hole for fixing the insert; 412. Columnar countersunk hole for fixing the movable block body; 42. Core insert; 43. Air needle screw; 44. Fixing bolt; 5. Center line of the combustion chamber model. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, a mold structure for solving the deformation of cylinder head castings of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 and Figure 2As shown, a mold structure for solving the deformation of cylinder head castings includes a pattern frame 1. The pattern frame 1 is provided with two cavities in which an upper cover plate lower pattern 2 and a lower cover plate lower pattern 3 are movably installed respectively. The cover plate lower pattern is adjusted from the original integral structure to a movable block structure. The movable block part is dedicated to each product and can be quickly switched and adjusted with the pattern frame 1 for use.

[0024] like Figure 3 and Figure 4 As shown, a combustion chamber movable block 4 is removed from each combustion chamber on the lower pattern 3 of the lower cover plate. The combustion chamber movable block 4 is an octagonal movable block removed at a certain distance from the upper rounded corner of the combustion chamber pattern, and the side of the octagon is provided with a rounded chamfer.

[0025] like Figure 4~Figure 7 As shown, the combustion chamber movable block 4 includes a movable block body 41, which is provided with a plurality of movable block body fixing cylindrical countersunk holes 412, into which fixing bolts 44 are screwed to fix the movable block body 41 on the lower mold 3 of the lower cover plate, and four corners of the movable block body 41 are provided with insert fixing cylindrical countersunk holes 411, in which core head inserts 42 are installed and fixed to the movable block body 41 by air needle screws 43.

[0026] In this embodiment, there are four fixed cylindrical countersunk holes 412 on the movable block body, two of which are located at the lowest point of the combustion chamber shape and are symmetrical with the center line 5 of the combustion chamber shape, and the other two are located on the flat inclined surface of the combustion chamber shape, one of which is located on the inclined surface where the exhaust plug is located, and the other is located on the outer inclined surface of the inclined surface where the exhaust plug is located, both of which are on the center line 5 of the combustion chamber shape and perpendicular to the flat inclined surface on the combustion chamber shape.

[0027] The utility model solves the problem of deformation of the cylinder head casting by using a mold structure. Six locations of the combustion chamber of the lower mold 3 of the lower cover plate are processed with movable blocks. The height of the movable blocks 4 of the combustion chamber can be quickly adjusted to adjust the sizes of the six combustion chambers of the casting, thereby achieving the purpose of adjusting the sizes of the combustion chambers of the casting, and effectively ensuring the dimensional accuracy of the casting, and effectively ensuring that the dimensional accuracy of the combustion chambers of the casting reaches ±0.5mm.

[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A mold structure for solving the deformation of cylinder head castings, characterized in that: The invention comprises a pattern frame (1), wherein a cavity is provided in the pattern frame (1) and a lower cover plate lower pattern (3) is movably mounted thereon, a combustion chamber movable block (4) is removed from each combustion chamber on the lower cover plate lower pattern (3), the combustion chamber movable block (4) comprises a movable block body (41), the movable block body (41) is provided with a plurality of movable block body fixing cylindrical countersunk holes (412), fixing bolts (44) are screwed into the movable block body fixing cylindrical countersunk holes (412) to fix the movable block body (41) to the lower cover plate lower pattern (3), the movable block body (41) is further provided with an insert fixing cylindrical countersunk hole (411), a core insert (42) is mounted in the insert fixing cylindrical countersunk hole (411), and is fixed to the movable block body (41) via an air needle screw (43).

2. The mold structure for solving the deformation of cylinder head casting according to claim 1 is characterized in that: Two cavities are provided on the pattern frame (1), one of which is movably mounted with the lower pattern of the lower cover plate (3), and the other is movably mounted with the lower pattern of the upper cover plate (2).

3. The mold structure for solving the deformation of cylinder head casting according to claim 1 is characterized in that: The movable block body is provided with four fixed cylindrical countersunk holes (412), two of which are located at the lowest point of the combustion chamber pattern and are symmetrical with the center line (5) of the combustion chamber pattern, and the other two are located on the flat inclined surface of the combustion chamber pattern and on the center line of the combustion chamber pattern.

4. The mold structure for solving the deformation of cylinder head casting according to claim 3 is characterized in that: The movable block body fixed cylindrical counterbore (412) located on the flat inclined surface of the combustion chamber pattern is perpendicular to the flat inclined surface of the combustion chamber pattern.

5. The mold structure for solving the deformation of cylinder head casting according to any one of claims 1 to 4, characterized in that: The combustion chamber movable block (4) is an octagonal movable block removed at a certain distance from the upper rounded corner of the combustion chamber pattern, and the side of the octagon is provided with a round chamfer.

Images