Adjustable tinned precision core support for casting automobile engine cylinder

Abstract

This utility model belongs to the field of automotive engine cylinder block casting technology, and discloses an adjustable tin-plated precision core support for automotive engine cylinder block casting. It includes an adjustable rod and support heads at both ends. The adjustable rod and support heads are connected by a locking assembly. The adjustable rod includes a receiving tube, one end of which is fitted with a connecting bearing. The connecting bearing is connected to an adjusting nut. The adjustable rod can adjust the length of the core support, allowing a single core support to adapt to cylinder block models with different sand core spacings. This reduces the types and quantities of customized core supports, lowers mold development costs, and the locking assembly allows for quick assembly and disassembly of the support heads. For the diverse sand core contact surfaces inside the cylinder block (such as flat surfaces, curved surfaces, and grooved surfaces), different shaped support heads (such as round flat heads, curved convex heads, and toothed anti-slip heads) can be quickly replaced, ensuring a tight fit between the support head and the sand core surface and avoiding localized stress concentration.

Description

Technical Field

[0001] This utility model belongs to the field of automotive engine cylinder block casting technology, specifically an adjustable tin-plated precision core support for automotive engine cylinder block casting. Background Technology

[0002] In the automotive manufacturing industry, the engine block is a core component, and its casting quality directly affects the performance and reliability of the engine. As the automotive industry develops towards lightweighting and integration, the structure of the engine block is becoming increasingly complex, with more and more irregularly shaped sand cores such as internal water jackets and oil passages, which puts forward higher requirements for the positioning accuracy and support stability of the core support.

[0003] Currently, traditional core supports for automotive engine cylinder block casting are mainly rigid structures of fixed dimensions, which have the following limitations: First, the spacing and support angle of sand cores vary greatly among different cylinder block models, and fixed-size core supports have poor versatility, requiring customized production, resulting in high mold costs and long production cycles; Second, rigid core supports cannot adapt to the slight deformation of sand cores caused by thermal expansion during the casting process, which can easily lead to local stress concentration in the sand core, causing sand core breakage or displacement, and consequently resulting in defects such as shrinkage cavities and sand holes in the cylinder block; In addition, the fixed connection method of traditional core supports makes it difficult to replace the support head after wear, increasing maintenance costs and downtime.

[0004] Therefore, an adjustable tin-plated precision core support for casting automotive engine cylinder blocks is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides an adjustable tin-plated precision core support for casting automotive engine cylinder blocks, which has the advantages of adjustable length and replaceable support head.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable tin-plated precision core support for casting automobile engine cylinder blocks, comprising an adjustable rod and support heads disposed at both ends thereof, wherein the adjustable rod and the support heads are connected by a locking assembly;

[0007] The adjustable rod includes a storage tube, one end of which is equipped with a connecting bearing. The connecting bearing is connected to an adjusting nut, which is threadedly connected to a threaded rod. One end of the threaded rod is located inside the storage tube. An axially oriented positioning groove is formed on the outer wall of the threaded rod. The positioning groove is slidably connected to the storage tube via a positioning slider.

[0008] The locking assembly includes a square block fixedly connected to an adjustable rod. A square frame is fixedly connected to the support head at a position corresponding to the square block. The square block is located within the square frame. A cylinder is provided on one side of the square frame. A movable plate is provided inside the cylinder. A pull rod is fixedly connected to the side of the movable plate away from the square frame. The end of the pull rod away from the movable plate passes through the cylinder and is connected to a pull block. A spring is sleeved on the pull rod inside the cylinder. A locking rod is fixedly connected to the side of the movable plate away from the pull rod. A locking groove is provided on the square block at a position corresponding to the locking rod. The end of the locking rod away from the movable plate passes through the square frame and extends into the locking groove.

[0009] Preferably, the support head has circumferentially distributed through holes.

[0010] Preferably, a square block is fixedly connected to the end of the receiving tube that is away from the threaded rod.

[0011] Preferably, the adjusting nut is provided with an adjusting screw, and an anti-slip block is connected to the inward end of the adjusting screw, the anti-slip block abutting against the outer wall of the threaded rod.

[0012] Preferably, the adjusting nut has a threaded hole at a position corresponding to the adjusting screw, and the adjusting screw is threadedly connected to the threaded hole.

[0013] Preferably, a storage groove is provided on the inner wall of the adjusting nut at a position corresponding to the anti-slip block, the anti-slip block is disposed in the storage groove, and the storage groove is connected to the threaded hole.

[0014] Preferably, a through groove is provided on the square frame at the position corresponding to the locking rod, and the locking rod passes through the through groove and extends into the locking groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, by setting an adjustable rod, can adjust the length of the core support, so that a single core support can be adapted to cylinder models with different sand core spacing, reducing the types and quantities of customized core supports and lowering mold development costs.

[0017] 2. This utility model, by setting a locking component, allows the support head to be quickly disassembled and assembled. For the diverse sand core contact surfaces inside the cylinder (such as flat surfaces, curved surfaces, and grooved surfaces), different shaped support heads (such as round flat heads, curved convex heads, and toothed anti-slip heads) can be quickly replaced to ensure that the support head fits tightly with the sand core surface and avoid local stress concentration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2This is a schematic diagram of the detachable structure of the support head of this utility model;

[0020] Figure 3 This is a schematic diagram of the adjustable rod of this utility model;

[0021] Figure 4 This is a cross-sectional view of the adjusting nut of this utility model;

[0022] Figure 5 This is a cross-sectional view of the square frame of this utility model.

[0023] In the diagram: 1. Adjustable rod; 101. Storage tube; 102. Connecting bearing; 103. Adjusting nut; 104. Threaded rod; 105. Positioning groove; 106. Positioning slider;

[0024] 2. Support head;

[0025] 3. Locking assembly; 301. Square block; 302. Square frame; 303. Cylinder; 304. Movable plate; 305. Pull rod; 306. Pull block; 307. Spring; 308. Locking rod; 309. Locking groove; 310. Through groove;

[0026] 4. Through hole; 5. Adjusting screw; 6. Anti-slip block; 7. Threaded hole; 8. Storage slot. Detailed Implementation

[0027] like Figures 1 to 5 As shown, this utility model provides an adjustable tin-plated precision core support for casting automobile engine cylinder blocks, including an adjustable rod 1 and support heads 2 at both ends thereon, with the adjustable rod 1 and support heads 2 connected by a locking assembly 3.

[0028] The adjustable rod 1 includes a storage tube 101. A connecting bearing 102 is installed at one end of the storage tube 101. An adjusting nut 103 is connected to the connecting bearing 102. A threaded rod 104 is threadedly connected to the adjusting nut 103. One end of the threaded rod 104 is located inside the storage tube 101. A positioning groove 105 is provided on the outer wall of the threaded rod 104 along the axial direction. The positioning groove 105 is slidably connected to the storage tube 101 through a positioning slider 106. The length of the core support can be adjusted so that a single core support can be adapted to cylinder models with different sand core spacing, reducing the types and quantities of customized core supports and lowering mold development costs.

[0029] Locking assembly 3 includes a square block 301 fixedly connected to an adjustable rod 1. A square frame 302 is fixedly connected to the support head 2 at a position corresponding to the square block 301. The square block 301 is located inside the square frame 302. A cylinder 303 is provided on one side of the square frame 302. A movable plate 304 is provided inside the cylinder 303. A pull rod 305 is fixedly connected to the side of the movable plate 304 away from the square frame 302. The end of the pull rod 305 away from the movable plate 304 passes through the cylinder 303 and is connected to a pull block 306. A spring 307 is sleeved on the pull rod 305 inside the cylinder 303. A locking rod 308 is fixedly connected to the side of plate 304 away from the pull rod 305. A locking groove 309 is provided on the square block 301 at the position corresponding to the locking rod 308. The end of the locking rod 308 away from the movable plate 304 passes through the square frame 302 and extends into the locking groove 309, so that the support head 2 can be quickly disassembled and assembled. For the diverse sand core contact surfaces inside the cylinder (such as flat surfaces, curved surfaces, and grooved surfaces), different shaped support heads 2 (such as round flat heads, curved convex heads, and toothed anti-slip heads) can be quickly replaced to ensure that the support head 2 fits tightly with the sand core surface and avoids local stress concentration.

[0030] Specifically, the support head 2 has circumferentially distributed through holes 4, which can disperse heat, improve heat dissipation efficiency, and reduce the impact of heat dissipation.

[0031] Furthermore, a square block 301 is fixedly connected to the end of the receiving tube 101 that is far away from the threaded rod 104.

[0032] Furthermore, the adjusting nut 103 is provided with an adjusting screw 5, and the inward end of the adjusting screw 5 is connected to an anti-slip block 6. The anti-slip block 6 abuts against the outer wall of the threaded rod 104 to stabilize the position of the adjusting nut 103 and ensure the accurate size of the core support.

[0033] It is worth noting that a threaded hole 7 is provided on the adjusting nut 103 at the position corresponding to the adjusting screw 5, and the threaded hole 7 is threadedly connected to the adjusting screw 5.

[0034] It is worth noting that a storage groove 8 is provided on the inner wall of the adjusting nut 103 at the position corresponding to the anti-slip block 6, and the anti-slip block 6 is located in the storage groove 8. The storage groove 8 is connected to the threaded hole 7.

[0035] It is worth mentioning that a through groove 310 is provided on the square frame 302 at the position corresponding to the locking rod 308, and the locking rod 308 extends into the locking groove 309 through the through groove 310.

[0036] Working principle and process: Hold the support head 2 at one end of the core support with one hand, and rotate the adjusting nut 103 of the adjustable rod 1 with the other hand. Under the action of the thread and the positioning groove 105, the threaded rod 104 can move axially, which can adjust the length of the core support. This allows a single core support to be adapted to cylinder models with different sand core spacing, reducing the types and quantities of customized core supports and lowering mold development costs. When the support head 2 needs to be removed, pull the pulling block 306 of the locking component 3, which in turn pulls the rod 305 to move the movable plate 304 and the locking rod 308 until the locking rod 308 disengages from the locking groove 309. Then the square block 301 can leave the square frame 302, and the support head 2 can be removed. This allows the support head 2 to be quickly disassembled and assembled. For the diverse sand core contact surfaces inside the cylinder (such as flat surfaces, curved surfaces, and grooved surfaces), different shapes of support heads 2 (such as round flat heads, curved convex heads, and toothed anti-slip heads) can be quickly replaced to ensure that the support head 2 fits tightly with the sand core surface and avoids local stress concentration.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable tin-plated precision core support for casting automobile engine cylinder blocks, comprising an adjustable rod (1) and support heads (2) disposed at both ends thereof, characterized in that: The adjustable rod (1) and the support head (2) are connected by a locking assembly (3); The adjustable rod (1) includes a storage tube (101), one end of which is equipped with a connecting bearing (102), the connecting bearing (102) is connected to an adjusting nut (103), the adjusting nut (103) is threadedly connected to a threaded rod (104), one end of the threaded rod (104) is located inside the storage tube (101), and the outer wall of the threaded rod (104) is provided with a positioning groove (105) arranged along the axial direction, the positioning groove (105) is slidably connected to the storage tube (101) through a positioning slider (106); The locking assembly (3) includes a square block (301) fixedly connected to an adjustable rod (1). A square frame (302) is fixedly connected to the support head (2) at a position corresponding to the square block (301). The square block (301) is located inside the square frame (302). A cylinder (303) is provided on one side of the square frame (302). A movable plate (304) is provided inside the cylinder (303). A pull rod (305) is fixedly connected to the side of the movable plate (304) away from the square frame (302). A pull block (306) is connected to the end of the movable plate (304) that is away from the cylinder (303). A spring (307) is sleeved on the pull rod (305) inside the cylinder (303). A locking rod (308) is fixedly connected to the side of the movable plate (304) away from the pull rod (305). A locking groove (309) is opened on the square block (301) at the position corresponding to the locking rod (308). The end of the locking rod (308) that is away from the movable plate (304) passes through the square frame (302) and extends into the locking groove (309).

2. The adjustable tin-plated precision core support for casting automotive engine cylinder blocks according to claim 1, characterized in that: The support head (2) has circumferentially distributed through holes (4).

3. The adjustable tin-plated precision core support for casting automotive engine cylinder blocks according to claim 1, characterized in that: A square block (301) is fixedly connected to the end of the receiving tube (101) that is far from the threaded rod (104).

4. The adjustable tin-plated precision core support for casting automobile engine cylinder blocks according to claim 1, characterized in that: An adjusting screw (5) is provided on the adjusting nut (103), and an anti-slip block (6) is connected to the inward end of the adjusting screw (5), which abuts against the outer wall of the threaded rod (104).

5. The adjustable tin-plated precision core support for casting automobile engine cylinder blocks according to claim 4, characterized in that: The adjusting nut (103) has a threaded hole (7) at the position corresponding to the adjusting screw (5), and the threaded hole (7) is threadedly connected to the adjusting screw (5).

6. The adjustable tin-plated precision core support for casting automobile engine cylinder blocks according to claim 5, characterized in that: The inner wall of the adjusting nut (103) is provided with a storage groove (8) at the position corresponding to the anti-slip block (6), the anti-slip block (6) is located in the storage groove (8), and the storage groove (8) is connected to the threaded hole (7).

7. The adjustable tin-plated precision core support for casting automobile engine cylinder blocks according to claim 1, characterized in that: A through groove (310) is provided on the square frame (302) at the position corresponding to the locking rod (308), and the locking rod (308) passes through the through groove (310) and extends into the locking groove (309).

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