Core setting size control device for annular casting

Abstract

The invention discloses an annular casting core setting size control device, and relates to the technical field of casting molds, the annular casting core setting size control device comprises a casting mold and a supporting plate arranged in the casting mold, a connecting sleeve is arranged between the two ends of the supporting plate, one end of the supporting plate is fixedly connected to the connecting sleeve, and the other end of the supporting plate can be inserted into the connecting sleeve; limiting protrusions are arranged on the two sides of the supporting plate, sliding grooves are formed in the positions, corresponding to the limiting protrusions, of the two sides of the connecting sleeve, and the limiting protrusions can be inserted into the sliding grooves. The supporting plate is provided with a plurality of positioning holes corresponding to the sliding grooves, fixing mechanisms corresponding to the positioning holes are arranged on the two sides of the connecting sleeve, a casting mold is supported through the supporting plate, and meanwhile the connecting sleeve is matched with the supporting plate to adjust the size of the device so as to adapt to different molds.

Description

Technical Field

[0001] The present application relates to the technical field of casting molds, and in particular to a device for controlling the size of a lower core of an annular casting. Background Art

[0002] During the casting process of annular castings, in order to avoid deformation of the mold of the annular casting and affect the annular casting, it is usually necessary to use sand cores to fill the inside of the mold. This process is called core setting. The sand core is used to support the inside of the mold so that the annular casting can be stably formed.

[0003] With respect to the above-mentioned related technologies, the inventors believe that when core inserting, the impact of the sand core may cause deformation of the mold, thereby affecting the size of the casting; or when performing the box turning operation, a large amount of sand core filling may also cause deformation of the mold and casting; at the same time, due to the different sizes of different annular castings, the amount of core inserting is also difficult to control. Summary of the invention

[0004] The purpose of the present application is to provide a device for controlling the size of cores for annular castings, so as to improve the problem that the sand core may affect the size of the mold during core setting and to control the amount of cores for different molds.

[0005] The present application provides a device for controlling the size of a core of an annular casting using the following technical solution: A device for controlling the size of a lower core of an annular casting comprises a casting mold and a support plate arranged on the inner side of the casting mold, a connecting sleeve being arranged between the two ends of the support plate, one end of the support plate being fixedly connected to the connecting sleeve, and the other end of the support plate being insertable in the connecting sleeve; limiting protrusions are arranged on both sides of the support plate, sliding grooves are arranged on both sides of the connecting sleeve corresponding to the limiting protrusions, and the limiting protrusions can be insertable in the sliding grooves; a plurality of positioning holes are arranged on the support plate corresponding to the sliding grooves, and corresponding sliding groove fixing mechanisms are arranged on both sides of the connecting sleeve; a fixed threaded hole is arranged on the side of the limiting protrusion away from the support plate, and an extension screw is threadedly connected to the inner thread of the fixed threaded hole.

[0006] By adopting the above technical scheme, a support plate is used to support the inner side of the casting mold, and a connecting sleeve is installed on the support plate. One end of the support plate is fixedly connected to the connecting sleeve, and the other end can be inserted into the connecting sleeve. The support plate is placed inside the casting mold to provide support for the casting mold to prevent the casting mold from being deformed by the impact of the sand core; limiting protrusions are provided on both sides of the support plate, and sliding grooves are correspondingly provided on both sides of the connecting sleeve. The limiting protrusions can be inserted into the sliding grooves, so that the support plate can be inserted into the connecting sleeve along the sliding groove, and the limiting protrusions can limit the movement of the support plate within the range of the sliding groove. On the one hand, the size of the device can be adjusted, and on the other hand, the support plate can be prevented from being misaligned and affecting the use. The size of the device can be adjusted to cope with the lower core volume of different casting molds; a number of positioning holes are arranged in the support plate, and the positioning holes correspond to the sliding grooves. At the same time, fixing mechanisms are installed on both sides of the connecting sleeve corresponding to the sliding grooves. The insertion position of the support plate can be controlled by connecting different positioning holes with the fixing mechanism, so that the diameter of the support plate can be controlled to adapt to casting molds of different sizes. Compared with fixing with screws, screws, etc., the use of the fixing mechanism is more convenient and quick, and the work efficiency is improved; a fixed threaded hole is arranged on the side of the limiting protrusion away from the support plate, and an extension screw is connected. The extension screw can be used to conveniently pull the support plate to move, and can be removed after use to avoid affecting the placement of the device in the casting mold.

[0007] Preferably, the fixing mechanism includes a fixing plate, a connecting plate rotatably connected to the fixing plate, and a positioning pin installed on one side of the connecting plate, wherein the positioning pin can pass through the sliding groove and be inserted into the positioning hole; a mounting chamfer is provided on the side of the positioning pin away from the connecting plate.

[0008] By adopting the above technical scheme, the fixing mechanism includes a fixing plate, a connecting plate, and a positioning pin. The fixing plate is installed on the outer side walls on both sides of the connecting sleeve. The connecting plate is rotatably connected to the fixing plate, and a positioning pin is arranged on the connecting plate. At this time, the connecting plate can be rotated to drive the positioning pin to pass through the sliding groove and insert into the positioning hole, thereby realizing the fixation of the support plate, and the insertion length of the support plate can be adjusted by inserting it into the positioning holes at different positions, so as to control the size of the device to adapt to different casting molds, and can cope with the lower core amount of casting molds under different sizes; at the same time, an installation chamfer is arranged on the side of the positioning pin away from the connecting plate, and the installation chamfer can facilitate the insertion of the positioning pin into the positioning hole.

[0009] Preferably, a fixing groove is provided on a side of the fixing plate away from the sliding groove, and the connecting plate can be inserted into the fixing groove.

[0010] By adopting the above technical solution, a fixing groove is provided on the side of the fixing plate away from the sliding groove, and the connecting plate can be inserted into the fixing groove. The connecting plate and the positioning pin can be temporarily fixed on the fixing plate through the cooperation between the connecting plate and the fixing groove, thereby facilitating the operation of moving the support plate, avoiding affecting the movement of the support plate when the positioning pin is not fixed, and improving the adjustment efficiency of the device.

[0011] Preferably, a fixing hole 1 is provided in the fixing groove, and a magnetic component 1 is provided in the fixing hole 1; a fixing hole 2 is provided on a side of the fixing plate close to the sliding groove, and a magnetic component 2 is provided in the fixing hole 2.

[0012] By adopting the above technical solution, a fixing hole 1 is provided in the fixing groove, and a magnetic component 1 is installed in the fixing hole 1. The magnetic force of the magnetic component is utilized to adsorb the connecting plate inserted into the fixing groove, so that the connecting plate is more stably fixed in the fixing groove to avoid falling during operation; and a fixing hole 2 is provided on the side of the fixing plate close to the sliding groove, and a magnetic component 2 is installed in the fixing hole 2. When the support plate needs to be fixed, the connecting plate will be attached to the fixing plate. At this time, the magnetic component 2 will adsorb the connecting plate, so that the connecting plate can be stably placed on the fixing plate, thereby allowing the positioning pin to be more stably inserted into the positioning hole.

[0013] Preferably, positioning protrusions are provided on both sides of the support plate, and positioning grooves are provided on the inner side wall of the connecting sleeve corresponding to the positioning protrusions, and the positioning protrusions can be inserted into the positioning grooves.

[0014] By adopting the above technical solution, positioning protrusions are provided on both sides of the support plate, and positioning grooves are provided on the inner wall of the connecting sleeve corresponding to the positioning protrusions. When the support plate is inserted into the connecting sleeve, the positioning protrusions are inserted into the positioning grooves at the same time. Through the cooperation between the positioning protrusions and the positioning grooves, the support plate is more firmly installed in the connecting sleeve.

[0015] Preferably, the inner side wall of the support plate is provided with a plurality of bending grooves 1; and the positioning protrusion is provided with a plurality of bending grooves 2.

[0016] By adopting the above technical solution, a plurality of bending grooves 1 are provided on the inner wall of the support plate, and the bending grooves 1 are utilized to provide a certain bending allowance for the support plate, thereby facilitating the adjustment of the size of the support plate; at the same time, a plurality of bending grooves 2 are provided on the positioning protrusion, and the bending grooves 2 provide a certain bending allowance for the positioning protrusion, thereby facilitating the bending of the positioning protrusion, and thereby enabling the positioning protrusion to be more easily inserted into the positioning groove.

[0017] Preferably, a lubricating oil groove is provided in the connecting sleeve, and an oil inlet is provided on the surface of the connecting sleeve, and the oil inlet is communicated with the lubricating oil groove; and a plurality of oil outlets are provided on the bottom wall of the lubricating oil groove.

[0018] By adopting the above technical solution, a lubricating oil groove is provided inside the connecting sleeve, and an oil inlet is provided on the upper surface of the connecting sleeve, the oil inlet is communicated with the lubricating oil groove, and the lubricating oil groove can be filled with lubricating oil through the oil inlet; at the same time, a plurality of oil outlets are provided at the bottom of the lubricating oil groove, and the lubricating oil in the lubricating oil groove can flow out through the oil outlets, so that the lubricating oil can be applied between the support plate and the connecting sleeve, thereby facilitating easier insertion of the support plate into the connecting sleeve, and utilizing the lubricating oil can reduce the friction loss between the support plate and the connecting sleeve, thereby improving the durability of the support plate and the connecting sleeve.

[0019] Preferably, a plurality of oil distribution grooves are provided on the surface of the support plate.

[0020] By adopting the above technical solution, a plurality of oil distribution grooves are arranged on the upper surface of the support plate, so that the lubricating oil can be more fully distributed between the support plate and the connecting sleeve through the oil distribution grooves, thereby improving the lubricating efficiency of the lubricating oil.

[0021] Preferably, a limiting block is arranged in the lubricating oil groove, a displacement groove communicating with the lubricating oil groove is arranged on the surface of the connecting sleeve, a toggle rod is arranged on the limiting block corresponding to the displacement groove, and the toggle rod passes through the displacement groove and extends to the outside of the displacement groove.

[0022] By adopting the above technical scheme, a limit block is arranged in the lubricating oil groove, and the limit block can prevent the lubricating oil from spreading; at the same time, a displacement groove connected to the lubricating oil groove is arranged on the surface of the connecting sleeve, and a toggle rod is arranged on the limit block corresponding to the displacement groove, and the toggle rod penetrates the displacement groove and extends to the outside of the connecting sleeve. At this time, the movement of the limit block in the lubricating oil groove can be controlled by the toggle rod, thereby limiting the filling range of the lubricating oil in the lubricating oil groove, and the position of the limit block can be adjusted according to the insertion position of the support plate, thereby adjusting the lubrication range, reducing the waste of lubricating oil caused by unnecessary lubrication, and improving the use efficiency of the lubricating oil.

[0023] Preferably, a protective cover is provided at the displacement groove on the surface of the connecting sleeve, and the protective cover is rotatably connected to the connecting sleeve; a plurality of embedding protrusions are provided on one side of the protective cover that is in contact with the connecting sleeve, and the connecting sleeve is provided with embedding grooves corresponding to the embedding protrusions, and the embedding protrusions can be inserted into the embedding grooves.

[0024] By adopting the above technical scheme, a protective cover is arranged on the connecting sleeve, and the protective cover is used to prevent the sand core from entering the lubricating oil groove when the core is lowered, which makes it difficult to clean and affects the lubrication effect; at the same time, the protective cover and the connecting sleeve are rotatably connected to facilitate the use of the protective cover; and a plurality of embedding protrusions are arranged on one side of the protective cover, and a plurality of embedding grooves are arranged on the surface of the connecting sleeve corresponding to the embedding protrusions. The cooperation between the embedding protrusions and the embedding grooves makes the protective cover more firmly fixed on the surface of the connecting sleeve, so as to prevent the protective cover from being impacted and failing during the core lowering process.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The support plate is installed inside the casting mold to provide support for the casting mold, so as to avoid the impact of the sand core during core setting, which may cause the mold to deform and affect the size of the casting. At the same time, a connecting sleeve is arranged on the support plate, and the size of the support plate can be adjusted by using the connecting sleeve and the fixing mechanism, so that the support plate can adapt to casting molds of different sizes; 2. The fixing mechanism includes a fixing plate, a connecting plate, and a positioning pin. The fixing plate is installed on both sides of the connecting sleeve. The connecting plate is rotatably connected to the fixing plate, and a positioning pin is installed on the connecting plate. By rotating the connecting plate, the positioning pin can be driven to pass through the sliding groove and insert into the positioning hole, thereby fixing the support plate; 3. A lubricating oil groove is provided in the connecting sleeve, and an oil inlet and a plurality of oil outlets are provided in the lubricating oil groove, and the lubricating oil is filled into the space between the support plate and the connecting sleeve through the oil outlet; and a limit block is provided in the lubricating oil groove, and the position of the limit block can be controlled according to the length of the support plate inserted into the connecting sleeve, thereby adjusting the range of lubrication and reducing unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a device for controlling the size of a lower core of an annular casting according to the present application.

[0027] Figure 2 yes Figure 1 Enlarged view of part A in .

[0028] Figure 3 It is a cross-sectional schematic diagram for illustrating the internal structure of the connecting sleeve in the embodiment.

[0029] Figure 4 yes Figure 3 Enlarged view of part B in .

[0030] Figure 5 Schematic diagram of the overall structure of the support plate in the embodiment.

[0031] Figure 6 yes Figure 5 Enlarged view of section C in .

[0032] In the figure, 1, casting mold; 2, support plate; 21, limiting protrusion; 211, fixing threaded hole; 2111, extension screw; 22, positioning hole; 23, positioning protrusion; 231, bending groove 2; 24, bending groove 1; 25, oil distribution groove; 3, connecting sleeve; 31, sliding groove; 32, positioning groove; 33, lubricating oil groove; 331, oil inlet; 332, oil outlet; 333, displacement groove; 34, embedded groove; 4, fixing mechanism; 41, fixing plate; 411, fixing groove; 4111, fixing hole 1; 4112, magnetic part 1; 412, fixing hole 2; 413, magnetic part 2; 42, connecting plate; 43, positioning pin; 431, installation chamfer; 5, limiting block; 51, toggle rod; 6, protective cover; 61, embedded protrusion. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0034] A device for controlling the size of the lower core of an annular casting, referring to Figure 1 , including a casting mold 1, a support plate 2, and a connecting sleeve 3. The support plate 2 can be placed inside the casting mold 1. The support plate 2 can be used to support the casting mold 1 to prevent the casting mold 1 from being deformed due to the impact of the sand core when the core is lowered, thereby making the size of the casting unable to meet the requirements; a connecting sleeve 3 is installed on the support plate 2, one side of the support plate 2 is fixedly connected to the connecting sleeve 3, and the other end can be inserted into the connecting sleeve 3, and at the same time, limiting protrusions 21 are provided on both sides of the support plate 2, and sliding grooves 31 are provided on both sides of the connecting sleeve 3 corresponding to the limiting protrusions 21. The limiting protrusions 21 can be inserted into the sliding grooves 31, so that the support plate 2 can move along the sliding grooves 31, and the moving distance of the support plate 2 will be limited by the length of the sliding grooves 31. At the same time, the limiting protrusions 21 can also prevent the support plate 2 from moving. The support plate 2 has a misalignment error when moving; a plurality of positioning holes 22 are provided in the support plate 2, and the positioning holes 22 correspond to the sliding grooves 31, and fixing mechanisms 4 are provided on both sides of the connecting sleeve 3, and the fixing mechanisms 4 can be connected to the positioning holes 22, and the length of the support plate 2 inserted into the connecting sleeve 3 is adjusted by connecting the positioning holes 22 at different positions, thereby adjusting the size of the device to adapt to casting molds 1 of different sizes; at the same time, a fixed threaded hole 211 is provided on the side of the limiting protrusion 21 away from the support plate 2, and an extension screw 2111 is threadedly connected in the fixed threaded hole 211, and the extension screw 2111 can be used to conveniently pull the support plate 2 to move, and can also be removed after use to avoid the extension screw 2111 affecting the overall placement of the device in the casting mold 1.

[0035] Reference Figure 2The fixing mechanism 4 includes a fixing plate 41, a connecting plate 42 rotatably connected to the fixing plate 41, and a positioning pin 43 installed on one side of the connecting plate 42. The fixing plate 41 is installed on both sides of the connecting sleeve 3, so that when the connecting plate 42 rotates, the positioning pin 43 can be driven to penetrate the sliding groove 31 and insert into the positioning hole 22, and the support plate 2 can be fixed by the positioning pin 43, and the length of the support plate 2 inserted into the connecting sleeve 3 can be controlled by adjusting the positioning pin 43 to insert into different positioning holes 22, thereby controlling the size of the support plate 2 to adapt to casting molds 1 of different sizes; at the same time, an installation chamfer 431 is provided at one end of the positioning pin 43 away from the connecting plate 42, and the installation chamfer 431 can be used to facilitate the positioning pin 43 to penetrate the sliding groove 31 and insert into the positioning hole 22, thereby improving the installation efficiency.

[0036] Reference Figure 2 and Figure 6 A fixing groove 411 is provided on the side of the fixing plate 41 away from the sliding groove 31, and the fixing groove 411 can be inserted into the connecting plate 42. The connecting plate 42 and the positioning pin 43 are fixed in the fixing groove 411 through the cooperation between the connecting plate 42 and the fixing groove 411, so as to facilitate the operation of moving the support plate 2. After the movement is completed, the connecting plate 42 is rotated back to its original position to prevent the moving plate and the positioning pin 43 from affecting the moving support plate 2. At the same time, a fixing hole 4111 is provided in the fixing groove 411, and a magnetic member 4112 is installed in the fixing hole 4111. The magnetic member 4112 is a magnet. One 4112 can absorb the connecting plate 42 placed in the fixing groove 411, so that the fixing of the connecting plate 42 and the positioning pin 43 is more stably; at the same time, a second fixing hole 412 is provided on the side of the fixing plate 41 close to the sliding groove 31, and a second magnetic part 413 is installed in the second fixing hole 412. The second magnetic part 413 is a magnet. When the positioning pin 43 is inserted into the positioning hole 22 and the connecting plate 42 is fitted with the fixing plate 41, the second magnetic part 413 will absorb the connecting plate 42, so that the connecting plate 42 and the positioning pin 43 are more firmly placed on the fixing plate 41, and the positioning pin 43 is more firmly inserted into the positioning hole 22.

[0037] Reference Figure 5, positioning protrusions 23 are provided on both sides of the support plate 2, and positioning grooves 32 are provided on the inner side wall of the connecting sleeve 3 corresponding to the positioning protrusions 23. When the support plate 2 is inserted into the connecting sleeve 3, the positioning protrusions 23 will be inserted into the positioning grooves 32 at the same time, and the support plate 2 is more firmly installed in the connecting sleeve 3 through the cooperation of the positioning protrusions 23 and the positioning grooves 32; a plurality of bending grooves 24 are provided on the inner side wall of the support plate 2, and the bending grooves 24 can provide a certain bending margin for the support plate 2, which is convenient for bending when adjusting the support plate 2, thereby making it easier for the support plate 2 to be inserted into the connecting sleeve 3, thereby improving the installation efficiency of the support plate 2; at the same time, a plurality of bending grooves 231 are provided on the positioning protrusion 23, and the bending grooves 231 can provide a certain bending margin for the positioning protrusion 23, so that the positioning protrusion 23 is easier to bend, thereby making it easier for the positioning protrusion 23 to be inserted into the positioning groove 32, thereby improving the installation efficiency.

[0038] Reference Figure 3 and Figure 4 A lubricating oil groove 33 is arranged inside the connecting sleeve 3, and an oil inlet 331 is arranged on the upper surface of the connecting sleeve 3, and the oil inlet 331 is communicated with the lubricating oil groove 33, and the lubricating oil can be filled into the lubricating oil groove 33 through the oil inlet 331; a plurality of oil outlets 332 are arranged at the bottom of the lubricating oil groove 33, so that the lubricating oil in the lubricating oil groove 33 can flow out through the oil outlets 332, and the lubricating oil can flow between the support plate 2 and the connecting sleeve 3, so that the support plate 2 can be inserted into the connecting sleeve 3 more easily, thereby improving the installation efficiency of the support plate 2 ; At the same time, the use of lubricating oil can reduce the friction between the support plate 2 and the connecting sleeve 3, reduce the friction loss between the support plate 2 and the connecting sleeve 3, thereby improving the durability of the support plate 2 and the connecting sleeve 3; a plurality of oil distribution grooves 25 are provided on the upper surface of the support plate 2. When the support plate 2 is inserted into the connecting sleeve 3, the lubricating oil is not easy to fully lubricate due to the tight connection between the support plate 2 and the connecting sleeve 3. At this time, the lubricating oil can be more evenly distributed between the support plate 2 and the connecting sleeve 3 through the oil distribution grooves 25, thereby improving the lubrication efficiency of the lubricating oil.

[0039] Reference Figure 4 A limiting block 5 is arranged in the lubricating oil groove 33, and a displacement groove 333 is arranged on the surface of the connecting sleeve 3. The displacement groove 333 is communicated with the lubricating oil groove 33, and a toggle rod 51 is arranged on the side of the limiting block 5 close to the displacement groove 333. The toggle rod 51 penetrates the displacement groove 333 and extends to the outside of the connecting sleeve 3. At this time, the limiting block 5 can be driven to move by controlling the toggle rod 51. The limiting block 5 can be used to limit the filling range of the lubricating oil in the lubricating oil groove 33. The position of the limiting block 5 can be adjusted according to the position where the support plate 2 is inserted into the connecting sleeve 3, thereby adjusting the lubrication range, reducing the waste of lubricating oil caused by unnecessary lubrication, and thus improving the use efficiency of the lubricating oil.

[0040] Reference Figure 4A protective cover 6 is installed at a position corresponding to the displacement groove 333 on the upper surface of the connecting sleeve 3. The protective cover 6 is used to prevent the sand core from entering the lubricating oil groove 33 from the displacement groove 333 and the oil inlet 331 when the core is lowered, which is difficult to clean and will also affect the lubrication effect; and the protective cover 6 is rotatably connected to the connecting sleeve 3, making the use of the protective cover 6 more convenient. At the same time, three embedding protrusions 61 are provided on the side of the protective cover 6 that is attached to the connecting sleeve 3, and an embedding groove 34 is provided on the surface of the connecting sleeve 3 corresponding to the embedding protrusion 61. The protective cover 6 is more firmly fixed on the surface of the connecting sleeve 3 through the cooperation of the embedding protrusion 61 and the embedding groove 34, so as to avoid the protective cover 6 being opened and failing due to the impact of the sand core.

[0041] The implementation principle of the embodiment of the present application is: A support plate 2 is used to support the inner side of the casting mold 1, and the support of the support plate 2 prevents the casting mold 1 from being deformed by the impact of the sand core; at the same time, a connecting sleeve 3 is installed on the support plate 2, one end of the support plate 2 is fixedly connected to the connecting sleeve 3, and the other end can be inserted into the connecting sleeve 3, and limited protrusions 21 are provided on both sides of the support plate 2, and sliding grooves 31 are provided on both sides of the connecting sleeve 3 corresponding to the limited protrusions 21. At this time, the size of the device can be controlled by inserting the support plate 2 into the connecting sleeve 3 to adapt to casting molds 1 of different sizes, and then the amount of core lowering of casting molds 1 of different sizes can be handled. At the same time, the movement of the support plate 2 is limited by the cooperation between the limiting protrusion 21 and the sliding groove 31, and the support plate 2 is limited to move within the range of the sliding groove 31. The cooperation between the limiting protrusion 21 and the sliding groove 31 can avoid the support plate 2 from being misaligned when moving in the connecting sleeve 3; a plurality of positioning holes 22 are provided in the support plate 2, and the positioning holes 22 correspond to the sliding groove 31, and fixing mechanisms 4 are provided on both sides of the connecting sleeve 3, and the fixing mechanisms 4 can be connected to the positioning holes 22. By connecting the positioning holes 22 at different positions, the insertion length of the support plate 2 can be adjusted, thereby controlling the overall size of the device.

[0042] The fixing mechanism 4 includes a fixing plate 41, a connecting plate 42, and a positioning pin 43. The fixing plate 41 is mounted on the outer side walls of both sides of the connecting sleeve 3. The connecting plate 42 is rotatably connected to the fixing plate 41, and a positioning pin 43 is provided on the connecting plate 42. At this time, the positioning pin 43 can be driven to penetrate the sliding groove 31 and insert into the positioning hole 22 by rotating the connecting plate 42, so as to fix the support plate 2. Compared with fixing by screws, bolts, etc., fixing by using the fixing mechanism 4 is simpler, more convenient and more efficient; at the same time, a fixing groove 411 is provided on the side of the fixing plate 41 away from the sliding groove 31, and a magnetic member 4112 is provided in the fixing groove 411, and the fixing groove 411 can be used for placing the connecting plate 42, and the magnetic member 4112 can adsorb the connecting plate 42, so that the connecting plate 42 is placed in the fixing groove 411 more firmly, and the connecting plate 42 and the positioning pin 43 are placed in the fixing groove 411 to prevent the connecting plate 42 and the positioning pin 43 from affecting the movement of the support plate 2.

[0043] Positioning protrusions 23 are provided on both sides of the support plate 2, and a positioning groove 32 is provided on the inner side wall of the connecting sleeve 3. The positioning protrusion 23 cooperates with the positioning groove 32 to make the support plate 2 more firmly fixed; bending groove 1 24 and bending groove 231 are provided on the inner side wall of the support plate 2 and the positioning protrusion 23. The bending groove 1 24 and bending groove 231 can provide a certain bending margin, so as to facilitate the adjustment of the support plate 2 and the positioning protrusion 23, make it easier to insert the support plate 2 and the positioning protrusion 23 into the connecting sleeve 3, and improve the installation efficiency of the support plate 2.

[0044] A lubricating oil groove 33 is arranged inside the connecting sleeve 3, and an oil inlet 331 is arranged on the surface of the connecting sleeve 3. The oil inlet 331 is communicated with the lubricating oil groove 33, and the lubricating oil can be filled into the lubricating oil groove 33 through the oil inlet 331. A plurality of oil outlets 332 are arranged at the bottom of the lubricating oil groove 33, so that the lubricating oil can flow from the oil outlet 332 to between the support plate 2 and the connecting sleeve 3. The lubricating oil can make the support plate 2 more easily inserted into the connecting sleeve 3, and the lubricating oil can reduce the friction loss between the support plate 2 and the connecting sleeve 3, thereby improving the durability of the support plate 2 and the connecting sleeve 3; a plurality of oil distribution grooves 25 are arranged on the surface of the support plate 2, and the oil distribution grooves 25 can make the lubricating oil more fully distributed between the support plate 2 and the connecting sleeve 3, thereby improving the lubrication efficiency of the lubricating oil.

[0045] A limiting block 5 is arranged in the lubricating oil groove 33, and a displacement groove 333 is arranged on the surface of the connecting sleeve 3, and the displacement groove 333 is communicated with the lubricating oil groove 33. At the same time, a toggle rod 51 is arranged on the side of the limiting block 5 close to the displacement groove 333, and the movement of the limiting block 5 can be controlled by the toggle rod 51, thereby controlling the filling range of the lubricating oil in the lubricating oil groove 33, that is, the lubrication range, thereby reducing unnecessary lubrication and improving the use efficiency of the lubricating oil; at the same time, a protective cover 6 is installed on the surface of the connecting sleeve 3, and the protective cover 6 can prevent the sand core from entering the lubricating oil groove 33 when the core is lowered, which is difficult to clean and affects the lubrication effect.

[0046] The casting mold 1 is supported by the support plate 2 to prevent the casting mold 1 from being deformed by the impact when the core is lowered. At the same time, the size of the device can be adjusted by the connecting sleeve 3 to adapt to casting molds 1 of different sizes, thereby coping with the core lowering amount of casting molds 1 of different sizes.

[0047] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for controlling the size of a lower core of an annular casting, characterized in that: The invention comprises a casting mold (1), a support plate (2) arranged inside the casting mold (1), a connecting sleeve (3) being arranged between the two ends of the support plate (2), one end of the support plate (2) being fixedly connected to the connecting sleeve (3), and the other end of the support plate (2) being insertable into the connecting sleeve (3); limiting protrusions (21) are arranged on both sides of the support plate (2), sliding grooves (31) are arranged on both sides of the connecting sleeve (3) corresponding to the limiting protrusions (21), and the limiting protrusions (21) can be insertable into the sliding grooves (31); a plurality of positioning holes (22) are arranged on the support plate (2) corresponding to the sliding grooves (31), and fixing mechanisms (4) corresponding to the sliding grooves (31) are arranged on both sides of the connecting sleeve (3); a fixing threaded hole (211) is arranged on the side of the limiting protrusion (21) away from the support plate (2), and an extension screw (2111) is connected to the inner thread of the fixing threaded hole (211).

2. The device for controlling the size of the lower core of an annular casting according to claim 1, characterized in that: The fixing mechanism (4) comprises a fixing plate (41), a connecting plate (42) rotatably connected to the fixing plate (41), and a positioning pin (43) installed on one side of the connecting plate (42); the positioning pin (43) can pass through the sliding groove (31) and be inserted into the positioning hole (22); and a mounting chamfer (431) is provided on one side of the positioning pin (43) away from the connecting plate (42).

3. The device for controlling the size of the lower core of an annular casting according to claim 2, characterized in that: A fixing groove (411) is provided on one side of the fixing plate (41) away from the sliding groove (31), and the connecting plate (42) can be inserted into the fixing groove (411).

4. The device for controlling the size of the lower core of an annular casting according to claim 3, characterized in that: A fixing hole 1 (4111) is provided in the fixing groove (411), and a magnetic member 1 (4112) that is magnetically attracted to the connecting plate (42) is provided in the fixing hole 1 (4111); a fixing hole 2 (412) is provided on a side of the fixing plate (41) close to the sliding groove (31), and a magnetic member 2 (413) that is magnetically attracted to the connecting plate (42) is provided in the fixing hole 2 (412).

5. The device for controlling the size of the lower core of an annular casting according to claim 1, characterized in that: Positioning protrusions (23) are provided on both sides of the support plate (2), and positioning grooves (32) are provided on the inner side wall of the connecting sleeve (3) corresponding to the positioning protrusions (23), and the positioning protrusions (23) can be inserted into the positioning grooves (32).

6. The device for controlling the size of the lower core of an annular casting according to claim 5, characterized in that: The inner side wall of the support plate (2) is provided with a plurality of bending grooves 1 (24); and the positioning protrusion (23) is provided with a plurality of bending grooves 2 (231).

7. The device for controlling the size of the lower core of an annular casting according to claim 1, characterized in that: A lubricating oil groove (33) is provided in the connecting sleeve (3), an oil inlet (331) is provided on the surface of the connecting sleeve (3), and the oil inlet (331) is communicated with the lubricating oil groove (33); a bottom wall of the lubricating oil groove (33) is provided with a plurality of oil outlets (332).

8. The device for controlling the size of the lower core of an annular casting according to claim 7, characterized in that: A plurality of oil distribution grooves (25) are arranged on the surface of the support plate (2).

9. The device for controlling the size of the lower core of an annular casting according to claim 7, characterized in that: A limit block (5) is arranged in the lubricating oil groove (33); a displacement groove (333) communicating with the lubricating oil groove (33) is arranged on the surface of the connecting sleeve (3); a toggle rod (51) is arranged on the limit block (5) corresponding to the displacement groove (333); and the toggle rod (51) penetrates the displacement groove (333) and extends to the outside of the displacement groove (333).

10. The device for controlling the size of the lower core of an annular casting according to claim 9, characterized in that: A protective cover (6) is provided at the displacement groove (333) on the surface of the connecting sleeve (3), and the protective cover (6) is rotatably connected to the connecting sleeve (3); a plurality of embedding protrusions (61) are provided on one side of the protective cover (6) that is in contact with the connecting sleeve (3), and the connecting sleeve (3) is provided with embedding grooves (34) corresponding to the embedding protrusions (61), and the embedding protrusions (61) can be inserted into the embedding grooves (34).

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