A core box facilitating demolding

Abstract

The utility model relates to the technical field of mould manufacturing discloses a core box of demoulding with convenience, including work table, the top fixedly connected with support of work table, the inside lateral wall of support is provided with electric telescopic handle, the movable end fixedly connected with upper core box of electric telescopic handle, the inner wall articulates with articulated rod of upper core box, the inner wall articulates with cylinder of articulated rod, the top fixedly connected with lower core box of work table, the inner wall of lower core box is provided with ejection mechanism, the outer wall of upper core box is provided with movable assembly, the ejection mechanism includes rotary rod, in the utility model, the whole upper movement of drive structure is through electric control electric telescopic handle, articulated rod extrusion rotary rod, makes rotary rod deflection and pushes the top block upwards, and the mould is stably ejected from lower core box, avoids the mould damage that artificial ejection can lead to, ensures mould complete separation, improves ejection efficiency and success rate.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to a lower core box that is easy to demold. Background Technology

[0002] A core box designed for easy demolding is a type of core box in casting production that facilitates the smooth removal of sand cores from the core box. This is typically achieved through optimized structure, such as using appropriate draft angles, parting surface designs, or convenient demolding mechanisms, to reduce friction and adhesion between the sand core and the core box. Such core boxes can improve sand core production efficiency, reduce the risk of sand core breakage during demolding, and ensure the dimensional accuracy of the sand core. They play a crucial role in improving casting quality and production efficiency in the casting process.

[0003] When mold making is required, workers will inject molding sand and other materials into the upper and lower core boxes. After the mold is formed, workers will manually assist by using ejector pins or tapping to detach the mold from the lower core box.

[0004] The existing technology has the following drawbacks: traditional core box demolding methods mostly rely on manual operation. Workers need to use tools to push the mold out of the core box, which not only consumes a lot of manpower, but also easily damages the mold due to uneven force during operation, reducing the mold's service life. At the same time, the ejection efficiency is low and it is difficult to meet the needs of large-scale production. Therefore, a core box that is easy to demold is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lower core box that facilitates demolding, aiming to improve the problem of cumbersome manual demolding steps in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lower core box that is easy to demold, comprising a worktable, a bracket fixedly connected to the top of the worktable, an electric telescopic rod provided on the inner side wall of the bracket, an upper core box fixedly connected to the movable end of the electric telescopic rod, a hinge rod hinged to the inner wall of the upper core box, a cylinder hinged to the inner wall of the hinge rod, a lower core box fixedly connected to the top of the worktable, an ejection mechanism provided on the inner wall of the lower core box, and a movable component provided on the outer wall of the upper core box;

[0007] The ejection mechanism includes a rotating rod, which is rotatably connected to the inner wall of the lower core box. A long rod is hinged to the inner wall of the rotating rod, and a top block is slidably connected to the outer wall of the long rod.

[0008] As a further description of the above technical solution:

[0009] The movable component includes a movable rod, which is fixedly connected to the outer wall of the upper core box. A round rod is provided on the right side wall of the movable rod, and a slider is in contact with the outer wall of the round rod. The lower outer wall of the slider is elastically connected to the worktable through a movable spring, and a push plate is fixedly connected to the outer wall of the slider.

[0010] As a further description of the above technical solution:

[0011] The cylinder is slidably connected to the inner wall of the lower core box.

[0012] As a further description of the above technical solution:

[0013] The bottom end of the hinge rod is in contact with the top end of the rotating rod, and the bottom end of the top block is in contact with the top end of the worktable.

[0014] As a further description of the above technical solution:

[0015] The top block is slidably connected to the inner wall of the lower core box.

[0016] As a further description of the above technical solution:

[0017] The bottom of the upper core box is in contact with the top of the lower core box.

[0018] As a further description of the above technical solution:

[0019] The slider is slidably connected to the top of the worktable, and the inner wall of the slider is provided with an inclined surface.

[0020] As a further description of the above technical solution:

[0021] The bottom end of the pusher plate contacts the top end of the lower core box.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the structure is moved upward by an electrically controlled telescopic rod, and the hinge rod squeezes the rotating rod, causing the rotating rod to deflect upward and push the top block, so as to stably eject the mold from the lower core box, avoiding mold damage that may be caused by manual ejection, ensuring that the mold is completely detached, and improving ejection efficiency and success rate.

[0024] 2. In this utility model, while ejecting the mold, the moving rod contacts the inclined surface of the slider, squeezing the slider and driving the push plate forward. While stretching the movable spring, the mold is automatically ejected, eliminating the need for secondary manual operation. This achieves automated and continuous operation of mold ejection and ejection, reducing manpower input and improving production efficiency. Attached Figure Description

[0025] Figure 1A schematic diagram showing the overall structure of the worktable and support for the lower core box that facilitates demolding, as proposed in this utility model;

[0026] Figure 2 This utility model provides a cross-sectional view of the upper and lower core boxes of a lower core box that is easy to demold.

[0027] Figure 3 This is a cross-sectional schematic diagram of the top block of a lower core box that is easy to demold, as proposed in this utility model.

[0028] Figure 4 This is a cross-sectional view of the upper core box, lower core box, and worktable of a lower core box that is easy to demold, as proposed in this utility model.

[0029] Legend:

[0030] 1. Workbench; 2. Support; 3. Electric telescopic rod; 4. Upper core box; 5. Lower core box; 6. Hinge rod; 7. Cylinder; 8. Rotating rod; 9. Top block; 10. Long rod; 11. Moving rod; 12. Slider; 13. Push plate; 14. Movable spring. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a lower core box for easy demolding, including a workbench 1, which supports the entire device. A bracket 2 is fixedly connected to the top of the workbench 1. An electric telescopic rod 3 is provided on the inner side wall of the bracket 2. The electric telescopic rod 3 is a mechanical device that achieves automatic extension and retraction of the rod body through electric drive. An upper core box 4 is fixedly connected to the movable end of the electric telescopic rod 3. A hinge rod 6 is hinged to the inner wall of the upper core box 4. The hinge rod 6 is initially inclined. A cylinder 7 is hinged to the inner wall of the hinge rod 6. The top of the worktable 1 is fixedly connected to a lower core box 5. The lower core box 5 is provided with the mold patterns required for production. The inner wall of the lower core box 5 is provided with an ejection mechanism. The outer wall of the upper core box 4 is provided with a movable component. The ejection mechanism includes a rotating rod 8, which is rotatably connected to the inner wall of the lower core box 5. The lower core box 5 has a slot corresponding to the rotating rod 8 to facilitate the rotation of the rotating rod 8. The inner wall of the rotating rod 8 is hinged to a long rod 10. The outer wall of the long rod 10 is slidably connected to a top block 9. The top block 9 has a slot corresponding to the long rod 10 to allow the long rod 10 to rotate.

[0033] Reference Figure 2 and Figure 4 The movable component includes a moving rod 11, which is fixedly connected to the outer wall of the upper core box 4. A round rod is provided on the right side wall of the moving rod 11. When the round rod presses the inclined surface of the slider 12, it causes the slider 12 to move forward. The outer wall of the round rod contacts the slider 12. The lower outer wall of the slider 12 is elastically connected to the worktable 1 through a movable spring 14. When the slider 12 moves forward, the movable spring 14 is stretched. When resetting, the elastic force of the movable spring 14 is used to reset the slider 12. A push plate 13 is fixedly connected to the outer wall of the slider 12. The slider 12 is slidably connected to the top of the worktable 1. The worktable 1 has a slot corresponding to the slider 12, allowing the slider 12 to move back and forth. The inner wall of the slider 12 is provided with an inclined surface. The bottom end of the push plate 13 contacts the top of the lower core box 5.

[0034] Reference Figures 1-3 The cylinder 7 is slidably connected to the inner wall of the lower core box 5. The lower core box 5 has a slot corresponding to the cylinder 7, allowing the cylinder 7 to move left and right. The bottom end of the hinge rod 6 contacts the top end of the rotating rod 8. When the hinge rod 6 presses the rotating rod 8, the rotating rod 8 deflects upward. The bottom end of the top block 9 contacts the top end of the worktable 1. The top block 9 is slidably connected to the inner wall of the lower core box 5. The lower core box 5 has a slot corresponding to the top block 9, allowing the top block 9 to move vertically. The bottom end of the upper core box 4 contacts the top end of the lower core box 5.

[0035] Working principle: When a mold needs to be made, the electric telescopic rod 3 is moved downwards by external electric control. The upper core box 4 moves downwards along with one end of the hinge rod 6, and the other end of the hinge rod 6 moves to the right along with the cylinder 7. When the hinge rod 6 is not in contact with the rotating rod 8, the top block 9 moves into the lower core box 5 under its own weight. At the same time, the upper core box 4 moves downwards along with the moving rod 11. As the moving rod 11 is no longer in contact with the vertical surface of the slider 12, it moves backwards along with the slider 12 and the push plate 13 under the elastic force of the movable spring 14. At this time, the moving rod 11 contacts the inclined surface inside the slider 12. When the upper core box 4 and the lower core box 5 are closed, the moving rod 11 contacts the lower vertical surface of the slider 12. At this time, the operator can inject material through the hole on the upper core box 4.

[0036] When the mold is completed, the externally controlled electric telescopic rod 3 moves the upper core box 4 and the hinge rod 6 upward. The other end of the hinge rod 6 moves to the left. When the other end of the hinge rod 6 presses against the rotating rod 8, it causes the rotating rod 8 to deflect upward. The rotating rod 8 pushes the top block 9 upward, and the top block 9 ejects the mold. At the same time, the moving rod 11 moves to contact the inclined surface of the slider 12. The moving rod 11 presses against the slider 12, causing the push plate 13 to move forward. The slider 12 stretches the movable spring 14, and the push plate 13 pushes out of the mold. Then, the operator can manually remove the mold. When the upper core box 4 moves to the initial position, the moving rod 11 and the push plate 13 move to the left. Figure 4 The state shown.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A core box for easy demolding, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a bracket (2), and an electric telescopic rod (3) is provided on the inner side wall of the bracket (2). The movable end of the electric telescopic rod (3) is fixedly connected to an upper core box (4). The inner wall of the upper core box (4) is hinged to a hinge rod (6), and the inner wall of the hinge rod (6) is hinged to a cylinder (7). The top of the workbench (1) is fixedly connected to a lower core box (5), and the inner wall of the lower core box (5) is provided with an ejection mechanism. The outer wall of the upper core box (4) is provided with a movable component. The ejection mechanism includes a rotating rod (8), which is rotatably connected to the inner wall of the lower core box (5). A long rod (10) is hinged to the inner wall of the rotating rod (8), and a top block (9) is slidably connected to the outer wall of the long rod (10).

2. The lower core box for easy demolding according to claim 1, characterized in that: The movable component includes a movable rod (11), which is fixedly connected to the outer wall of the upper core box (4). A round rod is provided on the right side wall of the movable rod (11), and the outer wall of the round rod contacts a slider (12). The lower outer wall of the slider (12) is elastically connected to the worktable (1) through a movable spring (14). A push plate (13) is fixedly connected to the outer wall of the slider (12).

3. The lower core box for easy demolding according to claim 1, characterized in that: The cylinder (7) is slidably connected to the inner wall of the lower core box (5).

4. The lower core box for easy demolding according to claim 1, characterized in that: The bottom end of the hinge rod (6) is in contact with the top end of the rotating rod (8), and the bottom end of the top block (9) is in contact with the top end of the worktable (1).

5. A lower core box for easy demolding according to claim 1, characterized in that: The top block (9) is slidably connected to the inner wall of the lower core box (5).

6. A lower core box for easy demolding according to claim 1, characterized in that: The bottom end of the upper core box (4) is in contact with the top end of the lower core box (5).

7. A lower core box for easy demolding according to claim 2, characterized in that: The slider (12) is slidably connected to the top of the workbench (1), and the inner wall of the slider (12) is provided with an inclined surface.

8. A lower core box for easy demolding according to claim 2, characterized in that: The bottom end of the push plate (13) is in contact with the top end of the lower core box (5).

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