Positioning device capable of easily positioning knock-off core of riser bush

Abstract

The utility model belongs to the technical field of fixing devices, and particularly relates to a positioning device capable of easily positioning a riser bush knock-off piece, which comprises a base, a riser bush and a knock-off piece, and further comprises a fixing column, a power cavity is formed in the fixing column, a circular ring is slidably mounted in the power cavity, and the fixed column is fixedly mounted at the bottom of an inner cavity of the base. A plurality of connecting rods are rotatably mounted at the top of the circular ring, sliding blocks are rotatably mounted at the upper ends of the connecting rods, the sliding blocks are slidably connected with the power cavity, and the ends, away from each other, of the sliding blocks penetrate through the power cavity and extend to the outside; the driving assembly is located in the base and used for driving the circular ring to slide up and down; the limiting grooves are formed in the bottom of the riser sleeve, it is guaranteed that the knock-off core and the riser sleeve cannot incline, it is guaranteed that the quality of a casting cannot be reduced, meanwhile, the riser sleeve is convenient to replace, operation is easy, tools are not needed, and meanwhile it is guaranteed that the knock-off core cannot fall off possibly in the casting process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fixing device technical field, especially, relate to a positioning device of easy-to-position riser sleeve easy-to-cut piece. BACKGROUND

[0002] The positioning device of the riser sleeve easy-to-cut piece is a special device for casting process, which can accurately determine the position of the riser sleeve easy-to-cut piece.

[0003] For example, the patent with the announcement number CN217617605U discloses a positioning device of easy-to-position riser sleeve easy-to-cut piece, which comprises a base, a positioning column, a spring and an abutting positioning head. The positioning column is arranged on the base, and multiple horizontal blind holes are arranged at equal angles in the middle part of the positioning column. One end of the spring is abutted in the horizontal blind hole, and the other end of the spring is abutted with the abutting positioning head. The end of the abutting positioning head away from the spring protrudes from the horizontal blind hole. After the abutting positioning head moves downward to the easy-to-cut piece and compresses the spring, it is abutted at the chamfered hole of the easy-to-cut piece. The spring and the abutting positioning head arranged in the blind hole can offset the impact force when the sand is filled through the pre-tightening force, ensure the stability of the riser during the molding process, and facilitate the demolding without affecting the production efficiency.

[0004] The above-mentioned patent has the following problems:

[0005] The above-mentioned device has some shortcomings when in use, such as: the abutting positioning head is prone to displacement when the spring is subjected to vibration, which may cause the riser to be skewed. At this time, the sand will enter the riser, which will affect the appearance of the casting. At the same time, the riser sleeve and the easy-to-cut piece of the above-mentioned device are bonded. When the temperature rises, the bonding agent will soften, decompose and other phenomena, which will weaken the bonding force between the riser sleeve and the easy-to-cut piece. The easy-to-cut piece may fall off during the casting process, which will affect the normal function of the riser and the quality of the casting. In view of this, we propose a positioning device of easy-to-position riser sleeve easy-to-cut piece. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a positioning device of easy-to-position riser sleeve easy-to-cut piece to solve the problems in the above background technology.

[0007] Therefore, the utility model provides a positioning device of easy-to-position riser sleeve easy-to-cut piece, which comprises a base, a riser sleeve and an easy-to-cut piece, and further comprises:

[0008] The fixed column is fixedly installed at the bottom of the inner cavity of the base, a power cavity is formed in the fixed column, a circular ring is slidably installed in the power cavity, a plurality of connecting rods are rotatably installed at the top of the circular ring, a plurality of sliding blocks are rotatably installed at the upper ends of the connecting rods, the sliding blocks are slidably connected with the power cavity, and the sliding blocks are away from each other at one end and extend to the outside through the power cavity;

[0009] The driving assembly is located in the base and is used for driving the circular ring to slide up and down.

[0010] A plurality of limiting grooves are formed in the bottom of the riser sleeve, the easy-to-cut piece sleeve is arranged on the fixed column, the riser sleeve is located at the top of the easy-to-cut piece, a plurality of limiting blocks are fixedly installed at the top of the easy-to-cut piece, and the limiting blocks are respectively inserted and matched with the limiting grooves.

[0011] The two groups of fixing assemblies are located in the easy-to-cut piece and are used for fixing the position of the riser sleeve.

[0012] In the technical solution, when the position of the easy-to-cut piece needs to be fixed, the easy-to-cut piece is first inserted into the fixed column, the driving assembly is arranged, the circular ring is driven to displace upward, the circular ring drives the connecting rods to rotate outward, the connecting rods respectively drive the sliding blocks to slide and move away from each other, when the sliding blocks are slid to appropriate positions, the bottoms of the sliding blocks are in close contact with the top of the easy-to-cut piece, and the sliding blocks extrude the easy-to-cut piece to displace downward, so that the bottom of the easy-to-cut piece is in close contact with the bottom of the inner cavity of the base, the easy-to-cut piece and the riser sleeve are prevented from being inclined, and the quality of the casting is ensured not to decrease.

[0013] When the easy-to-cut piece and the riser sleeve need to be fixed, the riser sleeve is placed on the top of the easy-to-cut piece, the limiting blocks are respectively inserted into the limiting grooves, and then the riser sleeve is rotated, so that the limiting blocks are respectively clamped in the limiting grooves, the connection between the riser sleeve and the easy-to-cut piece is ensured to be close, the position of the easy-to-cut piece and the riser sleeve can be fixed through the fixing assembly, the easy-to-cut piece and the riser sleeve can be disassembled through reverse operation, the riser sleeve can be replaced conveniently, the operation is simple and no tool is needed, and the easy-to-cut piece is prevented from falling off in the casting process.

[0014] In the above technical solution, further, the driving assembly comprises:

[0015] A motor is fixedly installed in the base and located below the fixed column, a threaded rod is fixedly installed at the output shaft of the motor, the upper end of the threaded rod extends to the power cavity through the fixed column, the upper end of the threaded rod extends to the circular ring, the threaded rod is in threaded connection with the circular ring, and the threaded rod is rotatably connected with the base, the fixed column and the power cavity.

[0016] In the technical solution, when the position of the easy-to-cut piece needs to be fixed, the easy-to-cut piece is first inserted into the fixing column, then the motor is started, the motor is powered on and drives the threaded rod to rotate, under the action of the thread, the threaded rod drives the annular ring to displace upward, the annular ring pushes the plurality of connecting rods to rotate outward, the plurality of connecting rods respectively push the plurality of sliding blocks to slide and move away from each other, when the plurality of sliding blocks are all slid to appropriate positions, the bottoms of the plurality of sliding blocks are in close contact with the top of the easy-to-cut piece, the plurality of sliding blocks extrude the easy-to-cut piece to displace downward, so that the bottom of the easy-to-cut piece is in close contact with the bottom of the inner cavity of the base, and the easy-to-cut piece and the riser sleeve cannot be inclined, so that the quality of the casting is not reduced.

[0017] In the above technical solution, further, the fixing assembly comprises:

[0018] The sliding groove is formed in the easy-to-cut piece, the fixing block is slidably installed in the sliding groove, one end of the fixing block is fixedly installed with a plurality of springs fixed to the inner wall of the sliding groove, the other end of the fixing block extends into the riser sleeve, and the other end of the fixing block is in plug-in cooperation with the riser sleeve, and the bottom of the fixing block penetrates through the sliding groove and extends to the outside.

[0019] In the technical solution, when the easy-to-cut piece and the riser sleeve need to be fixed, the worker first slides the two fixing blocks and moves them close to each other, and at the same time, the plurality of springs are extruded and contracted, then the riser sleeve is placed on the top of the easy-to-cut piece, at the same time, the plurality of limiting blocks are respectively inserted into the plurality of limiting grooves, then the riser sleeve is rotated, so that the plurality of limiting blocks are respectively clamped in the plurality of limiting grooves, the riser sleeve is ensured to be closely connected with the easy-to-cut piece, finally, the two fixing blocks are loosened, under the action of the rebound force of the plurality of springs, the two fixing blocks slide and move away from each other, and the two fixing blocks are inserted into the riser sleeve, so that the position of the easy-to-cut piece and the riser sleeve can be fixed, the easy-to-cut piece and the riser sleeve can also be disassembled through the above reverse operation, the riser sleeve can be conveniently replaced, the operation is simple and no tools are needed, and the easy-to-cut piece can be ensured not to fall off during casting.

[0020] In the above technical solution, further, the plurality of limiting blocks are annularly and equidistantly distributed on the easy-to-cut piece, and the plurality of sliding blocks are annularly and equidistantly distributed on the fixing column.

[0021] In the technical solution, the stability of the connection between the easy-to-cut piece and the riser sleeve is ensured, and the bottom of the easy-to-cut piece is ensured to be in close contact with the bottom of the inner cavity of the base.

[0022] In the above technical solution, further, the cross section of the limiting block is L-shaped.

[0023] In the technical solution, the stability of the connection between the easy-to-cut piece and the riser sleeve is ensured.

[0024] In the technical scheme, further, the bottom of each of the sliding blocks is in close contact with the top of the easy-to-break piece.

[0025] In the technical scheme, the bottom of the easy-to-break piece is in close contact with the bottom of the inner cavity of the base.

[0026] In the technical scheme, the bottom of the riser sleeve is in the same horizontal plane with the bottom of the easy-to-break piece, and the bottom of the riser sleeve and the bottom of the easy-to-break piece are in close contact with the bottom of the inner cavity of the base.

[0027] In the technical scheme, the sliding blocks extrude the easy-to-break piece to displace downward, so that the bottom of the easy-to-break piece is in close contact with the bottom of the inner cavity of the base, and the easy-to-break piece and the riser sleeve are prevented from being skewed.

[0028] The utility model discloses the beneficial effect is:

[0029] 1. The positioning device of easy-to-position riser sleeve easy-to-break piece, when needing to fix the position of easy-to-break piece, first insert easy-to-break piece on fixed column, can drive the circular ring to displace upward through the drive component that sets up, and the circular ring promotes a plurality of connecting rods to rotate outward, and a plurality of connecting rods respectively promote a plurality of sliding blocks to slide and mutually far away, when a plurality of sliding blocks all slide to the appropriate position, the bottom of a plurality of sliding blocks all are in close contact with the top of easy-to-break piece, and a plurality of sliding blocks extrude easy-to-break piece to displace downward, so that the bottom of the easy-to-break piece is in close contact with the bottom of the inner cavity of the base, and the easy-to-break piece and the riser sleeve are prevented from being skewed, and the quality of casting is prevented from falling.

[0030] 2. The positioning device of easy-to-position riser sleeve easy-to-break piece, when needing to fix easy-to-break piece and riser sleeve, place riser sleeve on the top of easy-to-break piece, and then a plurality of limiting blocks are inserted into a plurality of limiting grooves respectively, then rotate riser sleeve, so that a plurality of limiting blocks are clamped in a plurality of limiting grooves respectively, ensure that riser sleeve and easy-to-break piece are connected closely, through the fixed component that sets up, can fix the position of easy-to-break piece and riser sleeve, and through the reverse operation described above, easy-to-break piece and riser sleeve can also be disassembled, convenient to replace riser sleeve, and simple operation does not need to use tools, and ensure that easy-to-break piece can not fall off in the casting process. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the overall structure schematic diagram of the utility model;

[0032] Figure 2 It is the base sectional structure schematic diagram of the utility model;

[0033] Figure 3 It is the riser sleeve sectional structure schematic diagram of the utility model one;

[0034] Figure 4is a fixed column section structure schematic view one of the utility model;

[0035] Figure 5 is a fixed column section structure schematic view two of the utility model;

[0036] Figure 6 is a riser sleeve section structure schematic view two of the utility model;

[0037] Figure 7 is a limiting block area structure schematic view of the utility model;

[0038] Figure 8 is a easy-to-cut piece section structure schematic view of the utility model.

[0039] The mark in the figure indicates that:

[0040] 1, base;2, fixed column;3, power cavity;4, circular ring;5, connecting rod;6, sliding block;7, easy-to-cut piece;8, riser sleeve;9, limiting groove;10, limiting block;11, motor;12, threaded rod;13, sliding groove;14, fixed block;15, spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the size of each part shown in the drawings is not drawn according to the actual proportional relationship. The technology, method and equipment known to those skilled in the relevant art may not be discussed in detail, but should be considered as part of the authorized specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so distinguished is to be interpreted to allow that the embodiments of the present application can employ additional or different steps or elements than those disclosed or discussed herein without departing from the scope of the present application. Furthermore, these terms, such as "first", "second", and the like, are used to distinguish between two or more similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so distinguished is not to be interpreted as implying a specific order unless explicitly stated or understood otherwise.

[0044] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by the terms such as "front", "back", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom" and the like is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. In the absence of contrary indications, these orientation terms do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the outline of the components themselves.

[0045] It should be noted that in the present application, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0046] Embodiment 1:

[0047] Please refer to Figure 1 - Figure 8 As shown in the drawings, the present embodiment provides a positioning device for easily positioning the riser sleeve easy-to-cut piece, which comprises a base 1, a riser sleeve 8 and an easy-to-cut piece 7, and further comprises:

[0048] The fixed column 2 is fixedly installed at the bottom of the inner cavity of the base 1, a power cavity 3 is formed in the fixed column 2, a circular ring 4 is slidably installed in the power cavity 3, a plurality of connecting rods 5 are rotatably installed at the top of the circular ring 4, a plurality of sliding blocks 6 are rotatably installed at the upper ends of the connecting rods 5, the sliding blocks 6 are slidably connected with the power cavity 3, and the sliding blocks 6 are penetrated through the power cavity 3 and extend to the outside from the ends away from each other;

[0049] The driving assembly is located in the base 1 and is used for driving the circular ring 4 to slide up and down.

[0050] A plurality of limiting grooves 9 are formed at the bottom of the riser sleeve 8, the easy-to-cut piece 7 is sleeved on the fixed column 2, the riser sleeve 8 is located at the top of the easy-to-cut piece 7, a plurality of limiting blocks 10 are fixedly installed at the top of the easy-to-cut piece 7, and the limiting blocks 10 are respectively inserted and matched with the limiting grooves 9.

[0051] The two groups of fixing assemblies are located in the easy-to-cut piece 7 and are used for fixing the position of the riser sleeve 8.

[0052] When the position of the easy-to-cut piece 7 needs to be fixed, the easy-to-cut piece 7 is first inserted on the fixed column 2, the driving assembly is arranged to drive the circular ring 4 to displace upward, the circular ring 4 drives the connecting rods 5 to rotate outward, the connecting rods 5 respectively drive the sliding blocks 6 to slide and move away from each other, when the sliding blocks 6 are slid to appropriate positions, the bottoms of the sliding blocks 6 are in close contact with the top of the easy-to-cut piece 7, the sliding blocks 6 extrude the easy-to-cut piece 7 to displace downward, so that the bottom of the easy-to-cut piece 7 is in close contact with the bottom of the inner cavity of the base 1, the easy-to-cut piece 7 and the riser sleeve 8 are prevented from being inclined, and the quality of the casting is ensured not to be reduced.

[0053] When the easy-to-cut piece 7 and the riser sleeve 8 need to be fixed, the riser sleeve 8 is placed on the top of the easy-to-cut piece 7, the limiting blocks 10 are respectively inserted into the limiting grooves 9, then the riser sleeve 8 is rotated, the limiting blocks 10 are clamped in the limiting grooves 9, the connection between the riser sleeve 8 and the easy-to-cut piece 7 is ensured to be close, the position of the easy-to-cut piece 7 and the riser sleeve 8 is fixed by the fixing assembly, the easy-to-cut piece 7 and the riser sleeve 8 can also be disassembled by reverse operation, the riser sleeve 8 is convenient to replace, the operation is simple and no tool is needed, and the easy-to-cut piece 7 is prevented from falling off in the casting process.

[0054] In the embodiment, the driving assembly comprises:

[0055] The motor 11 is fixedly installed in the base 1 and below the fixed column 2, the output shaft of the motor 11 is fixedly installed with a threaded rod 12, the upper end of the threaded rod 12 penetrates through the fixed column 2 and extends into the power cavity 3, the upper end of the threaded rod 12 penetrates through the ring 4, and the threaded rod 12 is threadedly connected with the ring 4, and the threaded rod 12 is rotationally connected with the base 1, the fixed column 2 and the power cavity 3;

[0056] When it is necessary to fix the position of the easily broken piece 7, the easily broken piece 7 is first inserted into the fixed column 2, and then the motor 11 is started, the motor 11 is energized and drives the threaded rod 12 to rotate, under the action of the thread, the threaded rod 12 drives the ring 4 to displace upward, the ring 4 drives the plurality of connecting rods 5 to rotate outward, the plurality of connecting rods 5 respectively drive the plurality of sliding blocks 6 to slide and move away from each other, when the plurality of sliding blocks 6 are all slid to appropriate positions, the bottoms of the plurality of sliding blocks 6 are in close contact with the top of the easily broken piece 7, the plurality of sliding blocks 6 extrude the easily broken piece 7 to displace downward, so that the bottom of the easily broken piece 7 is in close contact with the bottom of the inner cavity of the base 1, and it is ensured that the easily broken piece 7 and the riser sleeve 8 will not be skewed, and the quality of the casting is ensured not to be reduced.

[0057] In the embodiment, the fixing assembly comprises:

[0058] The sliding groove 13 is formed in the easily broken piece 7, the fixing block 14 is slidably installed in the sliding groove 13, one end of the fixing block 14 is fixedly installed with the plurality of springs 15 fixed to the inner wall of the sliding groove 13, the other end of the fixing block 14 extends into the riser sleeve 8, and the other end of the fixing block 14 is in plug-in cooperation with the riser sleeve 8, and the bottom of the fixing block 14 penetrates through the sliding groove 13 and extends to the outside;

[0059] When it is necessary to fix the easily broken piece 7 and the riser sleeve 8, the worker first pulls the two fixing blocks 14 to slide and move close to each other, and at the same time, the plurality of springs 15 are extruded and contracted, then the riser sleeve 8 is placed on the top of the easily broken piece 7, and at the same time, the plurality of limiting blocks 10 are respectively inserted into the plurality of limiting grooves 9, then the riser sleeve 8 is rotated, so that the plurality of limiting blocks 10 are respectively clamped in the plurality of limiting grooves 9, and it is ensured that the riser sleeve 8 is connected closely with the easily broken piece 7, finally, the two fixing blocks 14 are loosened, and under the action of the rebounding force of the plurality of springs 15, the two fixing blocks 14 slide and move away from each other, and the two fixing blocks 14 are inserted into the riser sleeve 8, so that the position of the easily broken piece 7 and the riser sleeve 8 can be fixed, and through the above reverse operation, the easily broken piece 7 and the riser sleeve 8 can also be disassembled, which is convenient for replacing the riser sleeve 8, and the operation is simple and does not need to use tools, and at the same time, it is ensured that the easily broken piece 7 will not fall off in the casting process.

[0060] Embodiment 2:

[0061] The embodiment provides a positioning device for easily positioning a riser sleeve easy-to-cut piece.

[0062] In the embodiment, the plurality of limiting blocks 10 are distributed in a ring shape at equal intervals on the easy-to-cut piece 7, and the plurality of sliding blocks 6 are distributed in a ring shape at equal intervals on the fixing column 2.

[0063] The easy-to-cut piece 7 and the riser sleeve 8 are connected stably, and the bottom of the easy-to-cut piece 7 is in close contact with the bottom of the inner cavity of the base 1.

[0064] Embodiment 3

[0065] The embodiment provides a positioning device for easily positioning a riser sleeve easy-to-cut piece, which comprises the technical scheme of the above embodiment and has the following technical features.

[0066] In the embodiment, the limiting block 10 is in an L-shaped cross section.

[0067] The easy-to-cut piece 7 and the riser sleeve 8 are connected stably.

[0068] Embodiment 4

[0069] The embodiment provides a positioning device for easily positioning a riser sleeve easy-to-cut piece, which comprises the technical scheme of the above embodiment and has the following technical features.

[0070] In the embodiment, the bottom of each of the plurality of sliding blocks 6 is in close contact with the top of the easy-to-cut piece 7.

[0071] The bottom of the easy-to-cut piece 7 is in close contact with the bottom of the inner cavity of the base 1.

[0072] Embodiment 5

[0073] The embodiment provides a positioning device for easily positioning a riser sleeve easy-to-cut piece, which comprises the technical scheme of the above embodiment and has the following technical features.

[0074] In the embodiment, the bottom of the riser sleeve 8 and the bottom of the easy-to-cut piece 7 are located on the same horizontal plane, and the bottom of the riser sleeve 8 and the bottom of the easy-to-cut piece 7 are in close contact with the bottom of the inner cavity of the base 1.

[0075] The plurality of sliding blocks 6 extrude the easy-to-cut piece 7 to be displaced downward, so that the bottom of the easy-to-cut piece 7 is in close contact with the bottom of the inner cavity of the base 1, and the easy-to-cut piece 7 and the riser sleeve 8 are prevented from being skewed.

[0076] Working principle: when the position of the easily broken piece 7 needs to be fixed, first insert the easily broken piece 7 on the fixed column 2, then start the motor 11, the motor 11 is energized and drives the threaded rod 12 to rotate, under the action of the screw, the threaded rod 12 drives the annular ring 4 to displace upward, the annular ring 4 pushes the plurality of connecting rods 5 to rotate outward, the plurality of connecting rods 5 respectively push the plurality of sliding blocks 6 to slide and move away from each other, when the plurality of sliding blocks 6 are all slid to the appropriate position, the bottom of the plurality of sliding blocks 6 is in close contact with the top of the easily broken piece 7, the plurality of sliding blocks 6 will extrude the easily broken piece 7 to displace downward, so that the bottom of the easily broken piece 7 is in close contact with the bottom of the inner cavity of the base 1, ensuring that the easily broken piece 7 and the riser sleeve 8 will not be skewed, ensuring that the casting quality will not decrease;

[0077] When the easily broken piece 7 and the riser sleeve 8 need to be fixed, the worker first pulls the two fixed blocks 14 to slide and move close to each other, at the same time, the plurality of springs 15 are extruded and contracted, then place the riser sleeve 8 on the top of the easily broken piece 7, at the same time, the plurality of limiting blocks 10 are respectively inserted into the plurality of limiting grooves 9, then rotate the riser sleeve 8, so that the plurality of limiting blocks 10 are respectively clamped in the plurality of limiting grooves 9, ensuring that the riser sleeve 8 is connected closely with the easily broken piece 7, finally release the two fixed blocks 14, under the action of the rebound force of the plurality of springs 15, the two fixed blocks 14 slide and move away from each other, the two fixed blocks 14 are all inserted into the riser sleeve 8, which can fix the position of the easily broken piece 7 and the riser sleeve 8, through the above reverse operation, the easily broken piece 7 and the riser sleeve 8 can also be disassembled, which is convenient for replacing the riser sleeve 8, and the operation is simple without using tools, at the same time, ensuring that the easily broken piece 7 will not fall off during the casting process.

[0078] The embodiments of the present application are described above in combination with the drawings, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not restrictive, the person skilled in the art can make many forms without departing from the purpose of the present application and the scope protected by the claims under the inspiration of the present application, which all belong to the protection of the present application.

Claims

1. A positioning device for easily positioning a riser sleeve easy-to-cut sheet, comprising a base (1), a riser sleeve (8), and an easy-to-cut sheet (7), characterized in that, Also include: The fixed column (2) is fixedly installed at the bottom of the inner cavity of the base (1), a power cavity (3) is opened in the fixed column (2), a circular ring (4) is slidably installed in the power cavity (3), a plurality of connecting rods (5) are rotatably installed at the top of the circular ring (4), a plurality of sliding blocks (6) are rotatably installed at the upper end of the connecting rod (5), a plurality of sliding blocks (6) are slidably connected with the power cavity (3), and the ends of the sliding blocks (6) away from each other are penetrated through the power cavity (3) and extend to the outside; A driving assembly is located in the base (1) and is used to drive the circular ring (4) to slide up and down; A plurality of limiting grooves (9) are formed in the bottom of the riser sleeve (8), the easy-to-cut piece (7) is sleeved on the fixed column (2), the riser sleeve (8) is located at the top of the easy-to-cut piece (7), a plurality of limiting blocks (10) are fixedly installed at the top of the easy-to-cut piece (7), and the limiting blocks (10) are respectively inserted and matched with the limiting grooves (9). Two groups of fixing assemblies are located in the easy-to-cut piece (7) and are used to fix the position of the riser sleeve (8).

2. A positioning device for a riser sleeve easy-to-break sheet according to claim 1, characterized in that The driving assembly comprises: A motor (11) is fixedly installed in the base (1) and located below the fixed column (2), a threaded rod (12) is fixedly installed on the output shaft of the motor (11), the upper end of the threaded rod (12) penetrates through the fixed column (2) and extends into the power cavity (3), the upper end of the threaded rod (12) penetrates through the circular ring (4), and the threaded rod (12) is threadedly connected with the circular ring (4), and the threaded rod (12) is rotatably connected with the base (1), the fixed column (2) and the power cavity (3).

3. A positioning device for a riser sleeve easy tear tab according to claim 2, wherein, The fixing assembly comprises: A sliding groove (13) is formed in the easy-to-cut piece (7), a fixed block (14) is slidably installed in the sliding groove (13), a plurality of springs (15) fixedly installed in the inner wall of the sliding groove (13) are fixedly installed at one end of the fixed block (14), the other end of the fixed block (14) extends into the riser sleeve (8), and the other end of the fixed block (14) is inserted and matched with the riser sleeve (8), and the bottom of the fixed block (14) penetrates through the sliding groove (13) and extends to the outside.

4. A positioning device for easily positioning a riser sleeve easy-to-cut piece according to claim 1, characterized in that A plurality of limiting blocks (10) are annularly and equidistantly distributed on the easy-to-cut piece (7), and a plurality of sliding blocks (6) are annularly and equidistantly distributed on the fixed column (2).

5. A positioning device for easily positioning a riser sleeve easy-to-cut piece according to claim 1, characterized in that The cross section of the limiting block (10) is L-shaped.

6. A positioning device for easily positioning a riser sleeve easy tear tab according to claim 1, wherein The bottom of the sliding block (6) is in close contact with the top of the easy-to-cut piece (7).

7. A positioning device for easily positioning a riser sleeve easy-to-cut piece according to claim 1, characterized in that The bottom of the riser sleeve (8) and the bottom of the easy-to-cut piece (7) are located on the same horizontal plane, and the bottom of the riser sleeve (8) and the bottom of the easy-to-cut piece (7) are in close contact with the bottom of the inner cavity of the base (1).

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