Graded core pulling device

Abstract

The utility model discloses a graded core pulling device. The graded core pulling device comprises a main insert and an auxiliary insert mechanism, the main insert is cylindrical; one end of the main insert in the axial direction is closed, and the other end of the main insert is detachably provided with a closing plate; an auxiliary insert mechanism is mounted in the main insert in the axis direction; the auxiliary insert mechanism comprises a rotating shaft, a rotating plate, a movable block, a connecting screw and an auxiliary insert; one end, far away from the closing plate in the axial direction, of the main insert is movably connected with the cavity; and the main insert is movably connected with the mold. The grading core pulling device is simple in structure, flexible and practical.

Description

Technical Field

[0001] The present application relates to the technical field of graded core pulling, and in particular to a graded core pulling device. Background Art

[0002] At present, with the continuous improvement of social industrial skills, various industrial manufacturing technologies emerge in an endless stream, especially casting technologies are particularly common. However, the internal structure requirements for the cavity formed by casting are more complex, and it is often necessary to insert inserts in the mold to meet the needs. However, the cavity structure may be damaged when the mold is pulled out. Therefore, a graded core pulling device is needed to meet the demand of not damaging the cavity. However, at the same time, the current graded core pulling technology is relatively complicated and often adopts liquid-oil core pulling with low efficiency. At the same time, the shape of the secondary insert cannot be replaced, which makes it difficult to meet production needs. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a graded core-pulling device which is simple in structure, flexible and practical.

[0004] The present application provides a graded core pulling device, comprising a main insert and a secondary insert mechanism;

[0005] The main insert is set in a cylindrical shape; one end of the main insert along the axial direction is set to be closed, and the other end is detachably provided with a closing plate; the inside of the main insert is provided with a secondary insert mechanism along the axial direction; the secondary insert mechanism includes a rotating shaft, a rotating plate, a movable block, a connecting screw and a secondary insert;

[0006] One end of the main insert away from the closing plate along the axial direction is movably connected to the cavity; the main insert is movably connected to the mold.

[0007] Preferably, a rotating shaft is rotatably arranged inside the main insert along the axial direction; two ends of the rotating shaft along the axial direction are rotatably connected to one end of the main insert and the closing plate respectively; a rotating plate is fixedly arranged on the outer wall of the rotating shaft along the axial direction; arc-shaped protrusions and grooves are sequentially arranged on the outer wall of the rotating plate along the circumferential direction; the arc-shaped protrusions and grooves are arranged in groups in a matching manner, and four groups are evenly arranged in the first position along the circumference of the rotating plate;

[0008] A slide groove is provided through the wall surface of the main insert along the diameter direction; a movable block, a connecting screw and a secondary insert are arranged in sequence inside the slide groove along the radius direction of the main insert from the axis to the outside; the connecting screw is fixedly connected to the movable block at one end close to the movable block along the axial direction; a thread is provided at one end of the connecting screw close to the secondary insert along the axial direction for connecting or removing the secondary insert; the movable block, the connecting screw and the secondary insert are arranged in matching groups, and four groups of corresponding grooves are evenly arranged along the circumference of the rotating plate.

[0009] Preferably, the movable block is smoothly arranged in a groove corresponding to one end of the main insert close to the rotating plate along the diameter direction.

[0010] Preferably, the rotating plate, four groups of arc-shaped protrusions and grooves, four groups of movable blocks, connecting screws and auxiliary inserts are arranged in matching groups, and multiple groups are evenly arranged along the axial direction of the rotating shaft;

[0011] A plurality of chutes are arranged.

[0012] Preferably, one end of the rotating shaft close to the closing plate along the axial direction passes through the closing plate and extends out, and a rotating wheel is fixedly provided on the extended end.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] (1) When the main insert of the present application is inserted into or extracted from the mold, the auxiliary insert can be retracted into the slide groove by rotating the rotating shaft, so that the cavity will not be damaged when the main insert is inserted or extracted. When casting is required, the auxiliary insert can be pushed out of the main insert by rotating the rotating shaft, so that the auxiliary insert exposes the internal structure of the auxiliary cavity, thereby solving the problem of low efficiency of hydraulic core pulling;

[0015] (2) The present application combines the movable block and the auxiliary insert together by connecting screws, which is convenient for replacing the auxiliary insert. The auxiliary insert can be of various shapes, or the surface of the main insert can be simply made smooth, thereby changing the internal shape of the cavity, meeting the industrial needs of diversified cavities, and solving the problem that it is difficult to meet production needs due to the inability to replace the auxiliary insert. The overall device has a simple structure and high working efficiency.

[0016] It should be understood that the contents described in the Summary of the Invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 A schematic structural diagram of a graded core pulling device provided in an embodiment of the present application.

[0019] Numbers in the figure: 1, main insert; 2, auxiliary insert mechanism; 3, cavity; 4, mold;

[0020] 11. Closing plate; 12. Slideway; 13. Rotary wheel;

[0021] 21. Rotating shaft; 22. Rotating plate; 23. Movable block; 24. Connecting screws; 25. Auxiliary insert;

[0022] 31. Arc-shaped protrusion; 32. Groove. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Please refer to Figure 1 , an embodiment of the present application provides a graded core pulling device, comprising a main insert 1 and a secondary insert mechanism 2;

[0026] The main insert 1 is set in a cylindrical shape; one end of the main insert 1 along the axial direction is set to be closed, and the other end is detachably provided with a closing plate 11; the main insert 1 is provided with a secondary insert mechanism 2 installed along the axial direction; the secondary insert mechanism 2 includes a rotating shaft 21, a rotating plate 22, a movable block 23, a connecting screw 24 and a secondary insert 25;

[0027] One end of the main insert 1 away from the closing plate 11 along the axial direction is movably connected to the cavity 3; the main insert 1 is movably connected to the mold 4.

[0028] In this embodiment, when the main insert 1 is inserted into or withdrawn from the mold 4, the auxiliary insert 25 can be retracted into the slide groove 12 by rotating the rotating shaft 21, so that the main insert 1 can be inserted or withdrawn without damaging the cavity 3. When casting is required, the auxiliary insert 25 can be pushed out of the main insert 1 by rotating the rotating shaft 21, so that the auxiliary insert 25 is exposed to assist in refining the internal structure of the cavity 3, thereby solving the problem of low efficiency of liquid-oil core pulling.

[0029] The movable block 23 and the auxiliary insert 25 are combined together by connecting screws 24, which facilitates the replacement of the auxiliary insert 25. The auxiliary insert 25 can adopt various shapes, or simply make the surface of the main insert 1 smooth, thereby changing the internal shape of the cavity 3, meeting the industrial needs of diversified cavities 3, and solving the problem that it is difficult to meet production needs due to the inability to replace the auxiliary insert 25. The overall device has a simple structure and high working efficiency.

[0030] In a preferred embodiment, a rotating shaft 21 is rotatably arranged inside the main insert 1 along the axial direction; the two ends of the rotating shaft 21 along the axial direction are rotatably connected to one end of the main insert 1 and the closing plate 11 respectively; a rotating plate 22 is fixedly arranged on the outer wall of the rotating shaft 21 along the axial direction; the outer wall of the rotating plate 22 is sequentially provided with arc-shaped protrusions 31 and grooves 32 along the circumferential direction; the arc-shaped protrusions 31 and grooves 32 are matched and arranged in groups, and four groups are evenly connected in the first position along the circumference of the rotating plate 22;

[0031] A slide groove 12 is provided through the wall surface of the main insert 1 along the diameter direction; the interior of the slide groove 12 is provided with a movable block 23, a connecting screw 24 and an auxiliary insert 25 in sequence from the axis to the outside along the radius direction of the main insert 1; the connecting screw 24 is fixedly connected to the movable block 23 at one end close to the movable block 23 along the axial direction; a thread is provided at one end of the connecting screw 24 close to the auxiliary insert 25 along the axial direction for connecting or removing the auxiliary insert 25; the movable block 23, the connecting screw 24 and the auxiliary insert 25 are arranged in matching groups, and four groups of corresponding grooves 32 are evenly arranged along the circumference of the rotating plate 22.

[0032] In a preferred embodiment, one end of the movable block 23 close to the rotating plate 22 along the diameter direction of the main insert 1 is smoothly arranged corresponding to the groove 32 .

[0033] Please refer to Figure 1 In this embodiment, the movable block 23 is smoothly arranged at one end close to the rotating plate 22, so that it can slide frictionally on the arc-shaped protrusion 31. At the same time, the specifications of the movable block 23 correspond to the groove 32, so that it can be snapped into the groove 32 in a stable state.

[0034] In a preferred embodiment, the rotating plate 22, four sets of arc-shaped protrusions 31 and grooves 32, four sets of movable blocks 23, connecting screws 24 and auxiliary inserts 25 are arranged in matching groups, and multiple groups are evenly arranged along the axial direction of the rotating shaft 21;

[0035] A plurality of slide grooves 12 are arranged in an array.

[0036] Please refer to Figure 1 In this embodiment, the rotating plate 22, four groups of arc-shaped protrusions 31 and grooves 32, four groups of movable blocks 23, connecting screws 24 and auxiliary inserts 25 are arranged in matching groups, and there are four groups in total. There are multiple corresponding slide grooves 12 arranged in a row, among which the auxiliary inserts 25 can be freely disassembled and replaced as needed, or replaced with a closing block to close the corresponding outer port of the slide groove 12 to facilitate the casting work of the set shape.

[0037] In a preferred embodiment, one end of the rotating shaft 21 close to the closing plate 11 along the axial direction passes through the closing plate 11 and extends out, and a rotating wheel 13 is fixedly provided on the extended end.

[0038] Please refer to Figure 1 In this embodiment, the rotating wheel 13 is used to rotate the rotating shaft 21 clockwise or counterclockwise.

[0039] In another preferred embodiment, a locking mechanism is installed on one side of the closing plate 11 along the axial direction close to the turntable 13. The locking mechanism is used to limit or lock the rotation of the rotating shaft so that it is locked after each rotation. This mechanism belongs to the existing technology and is not within the scope of this application.

[0040] How this application works:

[0041] When ready to cast:

[0042] The auxiliary insert 25 can be selectively replaced according to the shape of the casting: rotate the rotating shaft 21 counterclockwise to make the movable block 23 slide along the arc direction of the arc-shaped protrusion 31. After rotating 90°, the movable block 23 moves away from the center of the corresponding rotating plate 22. At this time, the auxiliary insert 25 is close to the outer port of the slide groove 12 and extends out. Use a tool to pull out the auxiliary insert 25. After pulling it out, rotate the auxiliary insert 25 to disconnect it from the connecting screw 24, and selectively replace the auxiliary insert 25. Then, the rotating shaft 21 is rotated counterclockwise so that the movable block 23 drives the auxiliary insert 25 to approach the center of the rotating plate 22, and the auxiliary insert 25 is immersed in the main insert 1, so that the main insert 1 can be pushed into the mold without the auxiliary insert 25 colliding with the mold 4. When the main insert 1 reaches the required position, the rotating shaft 21 is rotated counterclockwise so that the movable block 23 slides along the arc direction of the arc-shaped protrusion 31. After rotating 90°, the movable block 23 is away from the center of the corresponding rotating plate 22. At this time, the auxiliary insert 25 is close to the outer port of the slide groove 12 and extends out. At this time, casting is carried out, and the auxiliary insert 25 assists in refining the internal structure of the cavity 3.

[0043] When the casting is complete:

[0044] The rotating shaft 21 is rotated counterclockwise so that the movable block 23 drives the auxiliary insert 25 to approach the center of the rotating plate 22, and the auxiliary insert 25 is immersed in the main insert 1, and the main insert 1 is pulled out of the mold 4 without the auxiliary insert 25 colliding with the mold 4, so that the main insert 1 and the auxiliary insert 25 are completely separated from the cavity 3 without damaging the cavity 3, thereby perfectly replacing the original cumbersome liquid-oil core pulling process and improving production efficiency.

[0045] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A graded core pulling device, characterized in that: It includes a main insert and a secondary insert mechanism; The main insert is set in a cylindrical shape; one end of the main insert along the axial direction is set to be closed, and the other end is detachably provided with a closing plate; the auxiliary insert mechanism is installed inside the main insert along the axial direction; the auxiliary insert mechanism includes a rotating shaft, a rotating plate, a movable block, a connecting screw and an auxiliary insert; One end of the main insert away from the closing plate along the axial direction is movably connected to the cavity; the main insert is movably connected to the mold.

2. The grading core pulling device according to claim 1, characterized in that: The rotating shaft is rotatably arranged inside the main insert along the axial direction; the two ends of the rotating shaft along the axial direction are rotatably connected to one end of the main insert and the closing plate respectively; the rotating plate is fixedly arranged on the outer wall of the rotating shaft along the axial direction; the outer wall of the rotating plate is sequentially provided with arc-shaped protrusions and grooves along the circumferential direction; the arc-shaped protrusions and the grooves are arranged in groups in a matching manner, and four groups are evenly connected in the first position along the circumference of the rotating plate; A slide groove is provided on the wall surface of the main insert along the diameter direction; the inside of the slide groove is provided with the movable block, the connecting screw and the auxiliary insert in sequence from the axis to the outside along the radius direction of the main insert; the connecting screw is fixedly connected to the movable block at one end close to the movable block along the axial direction; the connecting screw is provided with a thread at one end close to the auxiliary insert along the axial direction for connecting or disassembling the auxiliary insert; the movable block, the connecting screw and the auxiliary insert are arranged in matching groups, and four groups are evenly arranged along the circumference of the rotating plate corresponding to the grooves.

3. The graded core-pulling device according to claim 2, characterized in that: The movable block is smoothly arranged corresponding to the groove at one end close to the rotating plate along the diameter direction of the main insert.

4. The graded core-pulling device according to claim 3, characterized in that: The rotating plate, the four groups of the arc-shaped protrusions and the grooves, the four groups of the movable blocks, the connecting screws and the auxiliary inserts are arranged in a matching group, and multiple groups are evenly arranged along the axis direction of the rotating shaft; The slide grooves are arranged in a plurality.

5. The graded core-pulling device according to claim 4, characterized in that: One end of the rotating shaft close to the closing plate along the axial direction passes through the closing plate and extends out, and a rotating wheel is fixedly arranged on the extended end.

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