Sand core turning device

Abstract

The invention relates to a sand core turning device which comprises a right-angle rotating disc, a bracket, a supporting arm and a base, and the right-angle rotating disc is rotatably arranged on the bracket; the bracket is arranged on the base in a sliding manner; the supporting arms are arranged on the two sides of the right-angle rotating disc correspondingly, one end of each supporting arm is rotationally connected with the right-angle rotating disc, and the other end of each supporting arm is rotationally connected with the base. According to the core overturning device, the lead screw is manually rotated to drive the right-angle rotating disc to rotate, overturning of a sand core is completed, and the device is easy to manufacture and convenient to operate; and the sand core design difficulty is effectively reduced, stable overturning of the sand core is guaranteed, the risks of sand core breakage and damage are effectively reduced, sand inclusion of the casting is prevented, and the beneficial effects of reducing the production cost, improving the production efficiency, improving the casting quality and guaranteeing the production safety are achieved.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and particularly to a core-turning device for sand cores. Background Art

[0002] During the casting production process, sand cores need to be turned over during core setting and assembly. In the prior art, for 3D-printed sand cores, lifting handles are usually provided on the sand cores, so that sling lifting handles are used to complete the core-turning action in the air. However, during the core-turning process, the sand cores are easily damaged or broken, directly affecting production safety. Especially when making sand cores with irregular shapes, sand cores in the inner cavity of castings, etc., which involve more surfaces of the castings, through 3D printing technology, it is difficult to design lifting handles for core turning and it is easy to damage the surface of the sand cores, thus affecting the quality of the castings. Moreover, during the core-turning process, the sand cores are more likely to break, resulting in the scrapping of the sand cores and castings, increasing production costs and also posing a greater potential safety hazard in production. Summary of the Invention

[0003] Based on this, in view of the problems of difficult design of lifting handles for 3D-printed sand cores and easy damage and breakage of sand cores during the core-turning process, it is necessary to provide a core-turning device for sand cores.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A core-turning device for sand cores includes a right-angle turntable, a bracket, a support arm, and a base. The right-angle turntable is rotatably arranged on the bracket; the bracket is slidably arranged on the base; the support arms are respectively arranged on both sides of the right-angle turntable, one end of each support arm is rotatably connected to the right-angle turntable, and the other end is rotatably connected to the base.

[0006] In one embodiment, the base includes a frame, a slide rail, a lead screw, and a handle. The slide rail is arranged inside the frame. One end of the lead screw is arranged inside the frame, and the other end passes through the other side of the frame and is connected to the handle. The lead screw rotates axially on the frame.

[0007] In one embodiment, the lead screw is arranged in the same direction as the slide rail.

[0008] In one embodiment, the number of the slide rails is greater than or equal to 1.

[0009] In one embodiment, the bracket includes a tray, a bracket, a lead screw seat, and a sliding seat. The brackets are respectively arranged at both ends of the top of the tray and are rotatably connected to the right-angle parts on both sides of the right-angle turntable; the sliding seat is arranged at the bottom of the tray and is slidably connected to the slide rail, and the sliding seat can make a reciprocating motion along the direction of the slide rail; the lead screw seat is arranged at the bottom of the tray and is in cooperation connection with the lead screw.

[0010] In one embodiment, the support arm includes a straight arm and a connecting member. One end of the straight arm is rotatably connected to the right-angle turntable, and the other end is rotatably connected to the connecting member. The connecting member is disposed on the base.

[0011] During the core-turning process, through the action of the support arm, the core-turning process can be stopped at any angle, and the stability and safety of the core-turning process are improved.

[0012] In one embodiment, the right-angle turntable includes two grid-shaped steel plates arranged perpendicular to each other.

[0013] The right-angle turntable is manufactured by welding two grid-shaped steel plates arranged perpendicular to each other. On the one hand, the steel plate has a certain strength and can carry large sand cores. On the other hand, the grid-shaped or hollow design can reduce the weight of the right-angle turntable and make the core-turning device easier to operate.

[0014] In one embodiment, lifting handles are provided around the base.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0016] The core-turning device disclosed by the present invention drives the right-angle turntable to rotate by manually rotating the lead screw to complete the flipping of the sand core. This device is simple to manufacture and convenient to operate, effectively reducing the design difficulty of the sand core, ensuring the smooth flipping of the sand core, effectively reducing the risk of sand core fracture and breakage, and having the advantages of reducing production costs, improving production efficiency, and improving the quality of castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the sand core core-turning device;

[0018] Figure 2 It is a schematic diagram of the bracket structure;

[0019] Figure 3 It is a schematic diagram of the support arm structure;

[0020] Figure 4 It is a schematic diagram of the base structure;

[0021] Figure 5 It is a working schematic diagram of the sand core core-turning device.

[0022] Description of the reference numerals:

[0023] 100 - right-angle turntable, 200 - bracket, 300 - support arm, 400 - base, 500 - sand core;

[0024] 210 - support, 220 - tray, 230 - lead screw base, 240 - sliding seat;

[0025] 310 - Straight arm, 320 - Connecting piece;

[0026] 410 - Lead screw, 420 - Slide rail, 430 - Frame, 440 - Handle, 450 - Hanging handle. Specific embodiments

[0027] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0030] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and defined, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "beneath" and "underneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0033] Please refer to Figure 1 , a core turning device provided by an embodiment of the present invention includes a right-angle turntable, a bracket, a support arm and a base. The right-angle turntable is rotatably disposed on the bracket; the bracket is slidably disposed on the base; the support arms are respectively disposed on both sides of the right-angle turntable. One end of the support arm is rotatably connected to the right-angle turntable, and the other end is rotatably connected to the base; specifically, for this core turning device, the right angle of the right-angle turntable 100 is pin-connected to the bracket 200. The right-angle turntable 100 can freely rotate on the bracket 200. The bracket 200 is slidably disposed on the base 400. Support arms 300 are further disposed on both sides of the right-angle turntable 100. One end of the support arm 300 is pin-connected to the right-angle turntable 100 and the other end is rotatably connected to the base 400. The right-angle turntable 100 can freely rotate on the support arm 300. When turning the core, place the right-angle turntable 100 at 90°, with one right-angle side parallel to the horizontal. Place the core on one side of the right-angle turntable 100. Move the bracket 200 until the other right-angle side of the right-angle turntable 100 is parallel to the horizontal. The right-angle turntable 100 completes the core turning on the bracket 200; the core turning process of this device is stable, effectively preventing the core from breaking, while reducing production costs and improving production efficiency, ensuring production safety.

[0034] Furthermore, the right-angle turntable 100 is formed by welding two mutually perpendicular grid-shaped steel plates. On the one hand, the steel plates have a certain strength and can carry large cores. On the other hand, the grid-shaped or hollow design can reduce the weight of the right-angle turntable, making the core turning device easier to operate.

[0035] In one embodiment, please refer toFigure 4 The base 400 includes a lead screw 410, a slide rail 420, a frame 430 and a handle 440. The frame 430 is welded into a square frame structure by square steel. The slide rail 420 is arranged inside the frame 420. Preferably, at least one slide rail 420 is provided. In this embodiment, two slide rails 420 are arranged inside the frame 430, respectively arranged on both sides inside the frame 430 and parallel to each other. The slide rail 420 is used to guide the moving part. The lead screw 410 is arranged in the middle of the two slide rails 420. One end of the lead screw 410 is arranged inside the frame 430, and the other end passes through the other side of the frame 430 and is connected to the handle 440. The lead screw 410 rotates axially on the frame 430. Further, to ensure the normal operation of the device, the lead screw 410 is arranged in the same direction as the slide rail 420. During operation, by rotating the handle 440, the lead screw 410 rotates axially.

[0036] Further, lifting handles 450 are arranged around the frame 430, and the number of the lifting handles 450 can be set according to the shape. To ensure the lifting balance, preferably, the number of the lifting handles 450 on the opposite faces of the frame 430 is set to be the same. The arrangement of the lifting handles 450 makes the movement of the entire core turning device more convenient and efficient.

[0037] In one embodiment, please refer to Figure 2 The bracket 200 includes a bracket 210, a tray 220, a lead screw seat 230 and a slide block 240. Brackets 210 are fixedly arranged at both ends of the top of the tray 220. The brackets 210 are respectively pin-connected to the right-angle parts on both sides of the right-angle tray 100. The right-angle turntable 100 can rotate freely on the brackets 210. A lead screw seat 230 and a slide block 240 are fixedly arranged at the bottom of the tray 220. Among them, the inside of the lead screw seat 230 is a threaded structure and can be cooperatively connected with the lead screw 410 of the base 400. The slide block 240 is cooperatively connected with the slide rail 420 of the base 400. The slide block 240 can reciprocate along the direction of the slide rail 420. During operation, the right-angle tray 100 is installed on the brackets 210 at the top of the tray 220, the right-angle tray 100 is rotated to the required angle, the handle 440 is rotated, the lead screw 410 rotates axially, driving the lead screw seat 230 to reciprocate along the direction of the lead screw 410, thereby driving the bracket 200 to reciprocate along the direction of the slide rail 420. Finally, the right-angle tray 100 is moved to the required position.

[0038] In one embodiment, please refer to Figure 3, the support arm 300 includes a straight arm 310 and a connecting member 320. One end of the straight arm 310 is pin-connected to the connecting member 320, and the other end is pin-connected to the right-angle turntable 100. That is, the right-angle turntable 100 can rotate freely on the straight arm 310, and the straight arm 310 can rotate freely on the connecting member 320; the connecting member 320 is fixedly arranged on the base 400; in this embodiment, support arms 300 are arranged on both sides of one surface of the right-angle turntable 100. During operation, the straight arm 310 rotates with the changes in the horizontal position and rotation angle of the right-angle turntable 100, and plays a supporting or tensioning role during the entire rotation process of the right-angle turntable 100.

[0039] For the core turning device of the present invention, during operation, please refer to Figures 1-5 , place the right-angle turntable 100 in the zero position, with one right-angle side parallel to the horizontal. Place the core 500 on the right-angle turntable 100. Rotate the lead screw 410 by turning the handle 440. Under the guiding action of the slide rail 420, the bracket 200 moves until the other right-angle side of the right-angle turntable 100 is parallel to the horizontal, and the core 500 completes a 90° rotation. Then remove the core 500. Through the core turning device of the present invention, the design difficulty of the 3D printing core can be reduced, the design of the lifting handle can be reduced. This device is simple to operate and can be manually controlled. The core flips smoothly, effectively reducing the risk of core fracture and damage, and has the advantages of preventing sand inclusion in the casting, improving the quality of the casting, reducing production costs, improving production efficiency, and ensuring production safety.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A core-turning device for sand cores, characterized in that, The core turning device includes a right-angle turntable, a bracket, a support arm and a base. The right-angle turntable is rotatably arranged on the bracket; the bracket is slidably arranged on the base; the support arms are respectively arranged on both sides of the right-angle turntable, one end of the support arm is rotatably connected to the right-angle turntable, and the other end is rotatably connected to the base.

2. The core turning device according to claim 1, characterized in that The base includes a frame, a slide rail, a lead screw and a handle. The slide rail is arranged inside the frame. One end of the lead screw is arranged inside the frame, and the other end passes through the other side of the frame and is connected to the handle. The lead screw rotates axially on the frame.

3. The core turning device according to claim 2, characterized in that, The lead screw is arranged in the same direction as the slide rail.

4. The core turning device according to claim 2, characterized in that The number of the slide rails is greater than or equal to 1.

5. The core turning device according to claim 2, characterized in that, The bracket includes a tray, a bracket, a lead screw seat and a slide block. The brackets are respectively arranged at both ends of the top of the tray and are rotatably connected to the right-angle parts on both sides of the right-angle turntable; the slide block is arranged at the bottom of the tray and is slidably connected to the slide rail, and the slide block can reciprocate along the direction of the slide rail; the lead screw seat is arranged at the bottom of the tray and is in cooperative connection with the lead screw.

6. The core turning device according to claim 1, characterized in that, The support arm includes a straight arm and a connecting piece. One end of the straight arm is rotatably connected to the right-angle turntable, and the other end is rotatably connected to the connecting piece. The connecting piece is arranged on the base.

7. The core turning device according to claim 1, characterized in that, The right-angle turntable includes two grid-shaped steel plates arranged perpendicular to each other.

8. The core turning device according to claim 1, wherein Lifting handles are arranged around the base.

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