Casting lower core clamping structure of engine cylinder body
By combining the rotating mechanism and the clamping mechanism, the precise positioning and rapid clamping of the sand core in the engine cylinder block casting are achieved, solving the problems of inaccurate positioning and cumbersome operation in the existing technology, and improving the quality of castings and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
Existing engine block casting clamping structures are difficult to place sand cores accurately, are cumbersome to operate, and result in casting defects and low production efficiency.
The clamping structure, which combines a rotating mechanism and a clamping mechanism, includes a rotating disk, a rocker arm, a connecting rod, and grippers. It achieves precise positioning and rapid clamping of the sand core by limiting the position of the limiting pin.
It improves the positioning accuracy of sand cores, reduces casting defects, increases production efficiency, and simplifies the operation process.
Smart Images
Figure CN224026425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, and in particular to a clamping structure for the lower core of an engine cylinder block casting. Background Technology
[0002] The engine block is the core component of the engine, used to support and fix the main engine parts, and to form the combustion chamber to ensure the normal operation of the engine.
[0003] When casting engine cylinder blocks, the sand core needs to be clamped. Although the existing clamping structure can clamp the sand core, it still has some problems. First, the existing clamping structure is difficult to accurately locate the sand core and place it precisely into the mold. Second, the current clamping structure is relatively cumbersome to operate and the sand core is difficult to clamp quickly. Therefore, a new clamping structure for the lower core of engine cylinder block casting is needed to solve the above problems. Utility Model Content
[0004] The purpose of this utility model embodiment is to provide a clamping structure for the lower core of an engine cylinder block casting, which aims to solve the problems mentioned in the background art.
[0005] This utility model embodiment is implemented as follows: an engine cylinder block casting lower core clamping structure includes: a frame and limiting posts, the limiting posts being fixedly installed on the frame and having two posts; a rotating mechanism installed in the middle of the frame, the limiting posts being used to limit the rotating mechanism, the power output end of the rotating mechanism being hinged to a clamping mechanism installed on the frame, the rotating mechanism being used to control the clamping mechanism to clamp and fix the sand core.
[0006] Preferably, the rotating mechanism includes: a rotating disk, which is rotatably mounted in the middle of the frame, and a rocker arm is rotatably mounted on the rotating disk. The rocker arm can rotate up or down on the rotating disk. The rocker arm is used to control the rotation of the rotating disk, and a limiting post is used to limit the rotation of the rotating disk; and two connecting rods, one end of which is hinged to the rotating disk, and the other end of which is hinged to the clamping mechanism.
[0007] Preferably, the clamping mechanism includes: a slide rail, which is fixedly installed on the frame, a slider is slidably sleeved on the slide rail, a crossbeam is fixedly installed on the slider, and the other end of the crossbeam and the connecting rod are hinged; and grippers, which are fixedly installed on the crossbeam, with the two crossbeams used to drive the two grippers to approach each other to clamp and fix the sand core.
[0008] The engine cylinder block casting lower core clamping structure provided by this utility model has the following beneficial effects:
[0009] First, it improves positioning accuracy: by setting slide rails and sliders, the position of the sand core can be precisely determined, ensuring that the sand core is placed accurately in the mold, which effectively improves the dimensional accuracy and quality of the casting and reduces casting defects caused by sand core position deviation.
[0010] Secondly, it improves production efficiency: the lifting device reduces the time and difficulty of manual operation, enables the sand core to be lowered quickly and accurately, greatly improves the production efficiency of the core lowering process, and helps to improve the overall production capacity.
[0011] Third, it is easy to operate: operators can become proficient after simple training, which reduces the skill requirements for operators. Attached Figure Description
[0012] Figure 1 A front view of the core clamping structure for casting the lower core of the engine cylinder block.
[0013] Figure 2 Top view of the lower core clamping structure for engine cylinder block casting.
[0014] In the attached diagram: 1-frame, 2-limiting post, 3-rotating mechanism, 4-clamping mechanism, 31-rotating disk, 32-rocker arm, 33-connecting rod, 41-slide rail, 42-slider, 43-crossbeam, 44-gripper. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not limit the present utility model.
[0016] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0017] Please see Figure 1 and Figure 2 This utility model provides an engine cylinder block casting lower core clamping structure, which includes:
[0018] The frame 1 and the limiting post 2 are fixedly installed on the frame 1 and there are two of them; the rotating mechanism 3 is installed in the middle of the frame 1. The limiting post 2 is used to limit the rotating mechanism 3. The power output end of the rotating mechanism 3 is hinged to the clamping mechanism 4 installed on the frame 1. The rotating mechanism 3 is used to control the clamping mechanism 4 to clamp and fix the sand core.
[0019] When using the engine cylinder block casting lower core clamping structure, first place the sand core at the power output end of the clamping mechanism 4, turn the control end of the rotating mechanism 3, and the rotating mechanism 3 can drive the clamping mechanism 4 to clamp and fix the sand core. The limiting post 2 can limit the rotating mechanism 3 to ensure the clamping state of the clamping mechanism 4 on the sand core. After the sand core is clamped stably, the entire structure can be moved by the hydraulic equipment, so that the sand core can be accurately placed in the mold.
[0020] like Figure 1 As shown, in a preferred embodiment of the present invention, the rotating mechanism 3 includes: a rotating disk 31, which is rotatably mounted in the middle of the frame 1, a rocker arm 32 rotatably mounted on the rotating disk 31, the rocker arm 32 can rotate up or down on the rotating disk 31, the rocker arm 32 is used to control the rotation of the rotating disk 31, and the limiting post 2 is used to limit the rotation of the rotating disk 31; and a connecting rod 33, which has two rods, one end of which is hinged to the rotating disk 31, and the other end of the connecting rod 33 is hinged to the clamping mechanism 4.
[0021] like Figure 1 and Figure 2 As shown, in a preferred embodiment of the present invention, the clamping mechanism 4 includes: a slide rail 41, which is fixedly installed on the frame 1, a slider 42 is slidably sleeved on the slide rail 41, a crossbeam 43 is fixedly installed on the slider 42, and the other end of the crossbeam 43 and the connecting rod 33 are hinged; and a gripper 44, which is fixedly installed on the crossbeam 43, with the two crossbeams 43 used to drive the two grippers 44 to approach each other to clamp and fix the sand core.
[0022] When clamping and fixing the sand core, first lift the rocker arm 32 to make it rotate upward. After the limiting post 2 no longer interferes with the rocker arm 32, move the rocker arm 32. The rocker arm 32 drives the rotating disk 31 to rotate, so that the connecting rod 33 can pull the crossbeams 43 on both sides and the slider 42 to approach along the slide rail 41. When the crossbeams 43 on both sides approach each other, they can drive the grippers 44 on both sides to approach each other, so that the sand core can be clamped and fixed. After the sand core is clamped, push the rocker arm 32 down. The limiting post 2 can restrict the rocker arm 32 from returning to its original position, so as to ensure the clamping state of the sand core.
[0023] In addition, the purpose of the gripper 44 is to fix the sand core, and the shape of the gripper 44 is designed according to the shape of common sand cores.
[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An engine block casting core setting structure comprising a frame and a stopper column, characterized by, The limiting column is fixedly installed on the frame and is provided with two; The rotating mechanism is installed in the middle of the frame, and the limiting column is used for limiting the rotating mechanism. The power output end of the rotating mechanism is hingedly connected with the clamping mechanism installed on the frame. The rotating mechanism is used for controlling the clamping mechanism to clamp and fix the sand core.
2. The engine block casting core setting structure according to claim 1, characterized by The rotating mechanism comprises: The rotating disc is rotatably installed in the middle of the frame. The rocker arm is rotatably arranged on the rotating disc. The rocker arm can rotate upwards or downwards on the rotating disc. The rocker arm is used for controlling the rotating disc to rotate. The limiting column is used for limiting the rotating disc; The connecting rod is provided with two and is hingedly connected with the rotating disc at one end. The other end of the connecting rod is hingedly connected with the clamping mechanism.
3. The engine block casting core setting structure according to claim 2, characterized by The clamping mechanism comprises: The sliding rail is fixedly installed on the frame. The sliding block is slidably sleeved on the sliding rail. The cross beam is fixedly arranged on the sliding block. The cross beam is hingedly connected with the other end of the connecting rod; The clamping jaw is fixedly installed on the cross beam. The two cross beams are used for driving the two clamping jaws to approach each other to clamp and fix the sand core.