A casting mold core

Abstract

This invention belongs to the field of metal connector casting mold technology, and provides a casting mold core, including a first side mold, a second side mold, and a mold core portion. The first side mold is symmetrically connected to both sides of the mold core portion, and the second side mold is symmetrically disposed on both sides of the mold core portion. The mold core portion includes a body, on both sides of which are symmetrically provided connecting grooves, and on the other two sides of which are symmetrically provided first connecting surfaces. A first connecting portion is provided on one side of the first side mold, and the first connecting portion is engaged with the connecting groove. The second side mold has a second connecting surface, and the first connecting surface is engaged with the second connecting surface. This invention adopts a method of providing connecting grooves in the body and first connecting portions in the first side mold for engagement and connection. On the one hand, this ensures the smoothness and stability of the relative displacement of the internal structure. On the other hand, it eliminates the need for a semi-conical hole at the connection between the connecting groove and the mold core portion, thus saving production costs and improving production efficiency while ensuring the quality of the cast product.

Description

Technical Field

[0001] This invention belongs to the field of metal connector casting mold technology, specifically relating to a casting mold core used in scaffolding connectors for construction engineering. Background Technology

[0002] Metal T-connectors, as T-type connectors, are widely used due to their high specific strength and lightweight properties, such as in the connection of scaffolding in construction projects. As structural components, metal T-connectors are typically produced by gravity casting, a process where molten metal is poured into a mold under the influence of Earth's gravity. Because the hollow portion of the cast T-connector has an internal clamping function, a sand core is required as a mold for production. The main component of sand is resin, which generates a large amount of dust during raw material processing. During sand core molding, core making, and casting, the resin and other organic components decompose, and the solvents used release harmful fumes. Acids and alkalis dissolved in water during the preparation process are difficult to treat, hindering green production and causing serious environmental pollution if not properly managed. Furthermore, using traditional sand cores as casting molds can affect the quality of the casting due to the overall tightness of the sand core structure, impacting the thickness and uniformity of the fine-grained zone on the surface of the clamping area, easily leading to porosity and requiring repair welding.

[0003] In addition, making sand core molds requires a lot of labor, water, electricity and other production materials. However, a sand core mold can only produce one metal T-connector. Each time a connector is produced, the mold needs to be manually installed. Moreover, the produced metal T-connectors require cleaning of the internal sand core, which is very inconvenient. At the same time, the disposal of waste sand after single use also increases the production cost.

[0004] Based on the above situation, Chinese Patent 201910086850.0, concerning the casting mold core of a metal T-shaped connector, provides a technical solution to address the aforementioned problems. This solution replaces the existing sand core mold with a metal casting mold core, improving production efficiency while simultaneously meeting green and environmentally friendly production requirements. In this technical solution, during the casting process, the connecting rod of the casting equipment is prone to contacting components of the mold core during relative movement. A semi-conical hole is needed at the lower end of the first connecting part to avoid this. However, after a period of casting production, molten metal inevitably accumulates in the semi-conical hole, affecting production stability and product quality. Furthermore, the solidified molten metal residue remaining in the semi-conical hole is difficult to clean, often requiring mold core replacement, increasing production costs and impacting efficiency. Additionally, the process of opening semi-conical holes on both sides of the mold core body during the casting mold core machining process requires high precision, increasing the machining difficulty. Summary of the Invention

[0005] In view of this, the present invention provides a casting mold core. The present invention adopts a method of connecting the main body with a connecting groove and the first side mold with a first connecting part to cooperate and connect. On the one hand, it can ensure the smoothness and stability of the relative displacement between the first side mold and the mold core. On the other hand, it eliminates the need to open a semi-conical hole at the connection between the connecting groove and the mold core. While saving production costs and improving production efficiency, it can also ensure the quality of the casting product.

[0006] This invention is made of metal materials, can be repeatedly recycled, and can be installed and connected to casting equipment for semi-automatic / automatic production, ensuring production stability and effectively improving production efficiency. At the same time, the mold of this invention also replaces the sand core mold in the prior art, and will not generate environmentally polluting raw materials, reagents and waste, thus meeting the requirements of green production. It is an environmentally friendly and economical production tool for casting aluminum alloy parts.

[0007] The technical solution of this invention is as follows:

[0008] A casting mold core includes a first side mold, a second side mold, and a core portion. The first side mold is symmetrically connected to both sides of the core portion, and the second side mold is symmetrically disposed on both sides of the core portion. The core portion includes a body, on both sides of which are symmetrically provided connecting grooves, and on the other two sides of which are symmetrically provided first connecting surfaces. One side of the first side mold is provided with a first connecting portion, which is connected to the connecting groove. The second side mold is provided with a second connecting surface, and the first connecting surface is connected to the second connecting surface.

[0009] In this invention, the first and second side molds are symmetrically arranged around the mold core, ensuring the demolding and securing effect of the internal clamping shape, allowing relative movement of the entire casting mold core, and realizing relative displacement or disassembly between the various components of the casting mold core. The casting mold core structure of this invention has high tightness, which can effectively avoid the generation of air holes inside the produced metal T-shaped connectors.

[0010] Furthermore, the first side mold, the second side mold, and the mold core are connected to form a cylindrical casting mold core. Specifically, the first side mold, the second side mold, and the mold core are made of metal material; preferably, the metal T-shaped connector casting mold core is a high-quality carbon structural steel casting mold core. This design effectively improves cooling, increases the thickness and uniformity of the fine-grained zone on the casting surface at the internal clamping point, and enhances product reliability.

[0011] Furthermore, the connecting groove is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0012] Furthermore, the connecting groove is a dovetail groove, and the connecting groove has symmetrical first arc-shaped guide grooves on both sides, and the connecting groove has symmetrical first arc-shaped guide edges at the front end.

[0013] By symmetrically setting connecting grooves on both sides of the main body, it can avoid the situation where the connecting rod of the casting equipment hits the mold core component during relative movement after being connected to the casting equipment; on the other hand, the setting of the semi-conical hole is eliminated, which improves production efficiency and reduces production costs while ensuring the quality of metal T-type connectors during the casting process.

[0014] Furthermore, the horizontal cross-section of the first connecting portion is rectangular or trapezoidal.

[0015] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves.

[0016] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0017] By connecting the connecting groove in the main body with the first connecting part in the first side mold, the smoothness and stability of the relative displacement between the first side mold and the mold core can be ensured. On the other hand, there is no need to open a semi-conical hole at the connection between the connecting groove and the mold core. This saves production costs and improves production efficiency while also ensuring the quality of the cast products.

[0018] Furthermore, a second connecting part is fixedly connected to the lower part of the main body, and a first threaded hole is provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0019] Furthermore, the main body is a trapezoidal or rectangular body. This design provides a fundamental guarantee for the connection stability between the mold core and the first and second side molds, respectively. Preferably, the main body is a trapezoidal body, which makes it easier for the first and second side molds to move relative to the mold core.

[0020] Furthermore, the outer side of the first side mold is symmetrically provided with a first protrusion; the first protrusion is a stepped portion, and the side of the stepped portion is an arc-shaped surface; the outer side of the second side mold is symmetrically provided with a second protrusion; the second protrusion is an arc-shaped protrusion.

[0021] In this invention, the first protrusion corresponds to one side of the internal thread inside the metal T-shaped connector, and the second protrusion corresponds to the other side of the internal thread inside the metal T-shaped connector. Through the cooperation of the first and second protrusions, a threaded fixing structure inside the metal T-shaped connector can be formed during the casting process. During the casting process, the mold core of this application is used to cooperate in the processing and forming of the longitudinal connecting part of the metal T-shaped connector.

[0022] Furthermore, the first threaded hole of the second connecting part below the main body can be fixedly connected to the processing plane of the casting equipment by bolts or other means in the prior art to fix the mold core; the bottom of the first side mold is provided with a second threaded hole, which is connected to the connecting rod of the casting equipment during the casting process.

[0023] Furthermore, the upper part of the first side mold is provided with a first arc-shaped protrusion, the upper part of the second side mold is provided with a second arc-shaped protrusion, the first connecting part extends to one side of the first arc-shaped protrusion, and the first arc-shaped protrusion and the second arc-shaped protrusion are respectively connected to the mold core to form a stable closed structure.

[0024] Furthermore, a metal rod is fixedly connected to the second arc-shaped protrusion. After casting, the metal rod can be tapped moderately to separate the casting mold core from the product. The metal rod can then be used as a handle to remove the second side mold from the cast product, and the product can be clamped out. In this invention, one way to fix the second side mold is by fitting it between the first and second connecting surfaces to achieve relative movement and engagement with the mold core. The metal rod is used as a handle to allow the second side mold to be installed and separated from the mold core from above.

[0025] Furthermore, a T-shaped connecting groove is provided below the second side mold. In this invention, another way to fix the second side mold is to fix it to the snap-fit ​​part of the casting equipment push rod through the T-shaped connecting groove, and then to push the second side mold out by the equipment from below to achieve relative displacement between the second side mold and the mold core.

[0026] A method for preparing the above-mentioned casting mold core includes the following steps:

[0027] S1. The external structure of the casting mold core is formed as a single piece through casting processing using existing technologies;

[0028] S2. Cut both sides of the casting mold core to cut out the second side mold, forming the second connecting surface of the mold core body;

[0029] S3. Cut the other two sides of the casting mold core to form a connecting groove in the mold core body, and at the same time separate the first side mold;

[0030] S4. Perform secondary processing on the connecting groove and the first connecting part to form a first arc-shaped guide groove and a first arc-shaped guide edge in the connecting groove, and to form a second arc-shaped guide groove and a second arc-shaped guide edge in the first connecting part;

[0031] S5. A first threaded hole is made below the first connecting part;

[0032] S6. Open a second threaded hole at the bottom of the first side mold;

[0033] S7. Create a T-shaped connecting groove below the second side mold or weld a metal rod above the second side mold.

[0034] In step S7, the processing method is to select one of the processes.

[0035] The beneficial effects of this invention are as follows:

[0036] 1. This invention replaces the sand core used in traditional casting, eliminating the need for sand core production, reducing environmental pollution, and lowering production costs.

[0037] 2. It reduces post-processing steps for castings and casting molds, lowers production costs, and improves production efficiency.

[0038] 3. The mold core of this invention has a good cooling effect during the casting process, which can improve the thickness and uniformity of the fine grain zone of the casting surface at the internal clamping point, thereby improving product reliability.

[0039] 4. This invention can be adapted to connect to semi-automatic or fully automatic equipment, which can meet the needs of industrial production. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the core structure of the mold of the present invention;

[0045] Figure 6 This is a schematic diagram of the core structure of the mold of the present invention;

[0046] Figure 7 This is a schematic diagram of the structure of the first side mold of the present invention;

[0047] Figure 8 This is a partial structural diagram of the present invention;

[0048] Figure 9 This is a partial structural diagram of the present invention;

[0049] Figure 10 This is a bottom view of the structure of an embodiment of the present invention;

[0050] Figure 11 This is a bottom view of the structure of an embodiment of the present invention;

[0051] Figure 12 This is a bottom view of the structure of an embodiment of the present invention;

[0052] Figure 13 This is a bottom view of the structure of an embodiment of the present invention;

[0053] Figure 14 This is a bottom view of the structure of an embodiment of the present invention;

[0054] Figure 15 This is a bottom view of the structure of an embodiment of the present invention;

[0055] Figure 16 This is a schematic diagram of the aluminum alloy T-joint cast according to the present invention;

[0056] Figure 17 This is a schematic diagram of the aluminum alloy T-joint cast according to the present invention. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Example 1

[0059] A casting mold core includes a first side mold 1, a second side mold 2, and a core portion 3. The first side mold is symmetrically connected to both sides of the core portion, and the second side mold is symmetrically disposed on both sides of the core portion. The core portion includes a body 31, on both sides of which are symmetrically provided connecting grooves 32, and on the other two sides of which are symmetrically provided first connecting surfaces 33. A first connecting portion 11 is provided on one side of the first side mold, and the first connecting portion is connected to the connecting groove. The second side mold is provided with a second connecting surface 21, and the first connecting surface is connected to the second connecting surface.

[0060] In this invention, the first and second side molds are symmetrically arranged around the mold core, ensuring the demolding and securing effect of the internal clamping shape, allowing relative movement of the entire casting mold core, and realizing relative displacement or disassembly between the various components of the casting mold core. The casting mold core structure of this invention has high tightness, which can effectively avoid the generation of air holes inside the produced metal T-shaped connectors.

[0061] Furthermore, the first side mold, the second side mold, and the mold core are connected to form a cylindrical casting mold core. Specifically, the first side mold, the second side mold, and the mold core are made of metal material; preferably, the metal T-shaped connector casting mold core is a high-quality carbon structural steel casting mold core. This design effectively improves cooling, increases the thickness and uniformity of the fine-grained zone on the casting surface at the internal clamping point, and enhances product reliability.

[0062] Furthermore, the connecting groove 32 is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0063] Furthermore, the connecting groove is a dovetail groove, and the connecting groove is provided with first arc-shaped guide grooves 321 symmetrically on both sides, and the front end of the connecting groove is provided with first arc-shaped guide edges 322 symmetrically.

[0064] By symmetrically setting connecting grooves on both sides of the main body, it can avoid the situation where the connecting rod of the casting equipment hits the mold core component during relative movement after being connected to the casting equipment; on the other hand, the setting of the semi-conical hole is eliminated, which improves production efficiency and reduces production costs while ensuring the quality of metal T-type connectors during the casting process.

[0065] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0066] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0067] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0068] By connecting the connecting groove in the main body with the first connecting part in the first side mold, the smoothness and stability of the relative displacement between the first side mold and the mold core can be ensured. On the other hand, there is no need to open a semi-conical hole at the connection between the connecting groove and the mold core. This saves production costs and improves production efficiency while also ensuring the quality of the cast products.

[0069] Furthermore, a second connecting part 34 is fixedly connected to the lower part of the main body, and a first threaded hole 341 is provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0070] Furthermore, the body 31 is a trapezoidal body, which makes it easier for the first side mold, the second side mold and the mold core to move relative to each other.

[0071] Furthermore, the outer side of the first side mold is symmetrically provided with a first protrusion 12; the first protrusion is a stepped portion, and the side of the stepped portion is an arc-shaped surface; the outer side of the second side mold is symmetrically provided with a second protrusion 22; the second protrusion is an arc-shaped protrusion.

[0072] Furthermore, the first threaded hole of the second connecting part below the main body can be fixedly connected to the processing plane of the casting equipment by bolts or other means in the prior art to fix the mold core; the bottom of the first side mold is provided with a second threaded hole 13, which is connected to the connecting rod of the casting equipment during the casting process.

[0073] Furthermore, the upper part of the first side mold is provided with a first arc-shaped protrusion 14, the upper part of the second side mold is provided with a second arc-shaped protrusion 23, the first connecting part extends to one side of the first arc-shaped protrusion, and the first arc-shaped protrusion and the second arc-shaped protrusion are respectively connected to the mold core to form a stable closed structure.

[0074] Furthermore, a metal rod 24 is fixedly connected to the second arc-shaped protrusion. After casting, the metal rod can be tapped moderately to separate the casting mold core from the product. The metal rod can then be used as a handle to remove the second side mold from the cast product, and the product can be clamped out. In this invention, one way to fix the second side mold is by fitting it between the first and second connecting surfaces to achieve relative movement and engagement with the mold core. The metal rod is used as a handle to allow the second side mold to be installed and separated from the mold core from above.

[0075] In this embodiment, the mold core and the first side mold are connected by a relative displacement engagement through a connecting groove, and the second side mold is connected to the mold core and the first side mold by a displacement engagement.

[0076] This embodiment provides an aluminum alloy T-type connector 4, which includes a transverse connecting part 41 and a longitudinal connecting part 42. The longitudinal connecting part is provided with a threaded part 43, which includes a first internal thread 431 and a second internal thread 432 symmetrically arranged.

[0077] In this embodiment, the first protrusion corresponds to the first internal thread inside the aluminum alloy T-joint, and the second protrusion corresponds to the second internal thread inside the aluminum alloy T-joint. Through the cooperation of the first and second protrusions, a threaded fixing structure inside the aluminum alloy T-joint can be formed during the casting process. During the casting process, the mold core of this application is used to cooperate in the processing and forming of the longitudinal connecting part of the metal T-connector.

[0078] A method for preparing the above-mentioned casting mold core includes the following steps:

[0079] S1. The external structure of the casting mold core is formed as a single piece through casting processing using existing technologies;

[0080] S2. Cut both sides of the casting mold core to cut out the second side mold, forming the second connecting surface of the mold core body;

[0081] S3. Cut the other two sides of the casting mold core to form a connecting groove in the mold core body, and at the same time separate the first side mold;

[0082] S4. Perform secondary processing on the connecting groove and the first connecting part to form a first arc-shaped guide groove and a first arc-shaped guide edge in the connecting groove, and to form a second arc-shaped guide groove and a second arc-shaped guide edge in the first connecting part;

[0083] S5. A first threaded hole is made below the first connecting part;

[0084] S6. Open a second threaded hole at the bottom of the first side mold;

[0085] S7. Weld a metal rod above the second side mold.

[0086] Example 2

[0087] A casting mold core includes a first side mold 1, a second side mold 2, and a core portion 3. The first side mold is symmetrically connected to both sides of the core portion, and the second side mold is symmetrically disposed on both sides of the core portion. The core portion includes a body 31, on both sides of which are symmetrically provided connecting grooves 32, and on the other two sides of which are symmetrically provided first connecting surfaces 33. A first connecting portion 11 is provided on one side of the first side mold, and the first connecting portion is connected to the connecting groove. The second side mold is provided with a second connecting surface 21, and the first connecting surface is connected to the second connecting surface.

[0088] In this invention, the first and second side molds are symmetrically arranged around the mold core, ensuring the demolding and securing effect of the internal clamping shape, allowing relative movement of the entire casting mold core, and realizing relative displacement or disassembly between the various components of the casting mold core. The casting mold core structure of this invention has high tightness, which can effectively avoid the generation of air holes inside the produced metal T-shaped connectors.

[0089] Furthermore, the first side mold, the second side mold, and the mold core are connected to form a cylindrical casting mold core. Specifically, the first side mold, the second side mold, and the mold core are made of metal material; preferably, the metal T-shaped connector casting mold core is a high-quality carbon structural steel casting mold core. This design effectively improves cooling, increases the thickness and uniformity of the fine-grained zone on the casting surface at the internal clamping point, and enhances product reliability.

[0090] Furthermore, the connecting groove 32 is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0091] Furthermore, the connecting groove is a dovetail groove, and the connecting groove is provided with first arc-shaped guide grooves 321 symmetrically on both sides, and the front end of the connecting groove is provided with first arc-shaped guide edges 322 symmetrically.

[0092] By symmetrically setting connecting grooves on both sides of the main body, it can avoid the situation where the connecting rod of the casting equipment hits the mold core component during relative movement after being connected to the casting equipment; on the other hand, the setting of the semi-conical hole is eliminated, which improves production efficiency and reduces production costs while ensuring the quality of metal T-type connectors during the casting process.

[0093] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0094] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0095] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0096] By connecting the connecting groove in the main body with the first connecting part in the first side mold, the smoothness and stability of the relative displacement between the first side mold and the mold core can be ensured. On the other hand, there is no need to open a semi-conical hole at the connection between the connecting groove and the mold core. This saves production costs and improves production efficiency while also ensuring the quality of the cast products.

[0097] Furthermore, a second connecting part 34 is fixedly connected to the lower part of the main body, and a first threaded hole 341 is provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0098] Furthermore, the body 31 is a trapezoidal body, which makes it easier for the first side mold, the second side mold and the mold core to move relative to each other.

[0099] Furthermore, the outer side of the first side mold is symmetrically provided with a first protrusion 12; the first protrusion is a stepped portion, and the side of the stepped portion is an arc-shaped surface; the outer side of the second side mold is symmetrically provided with a second protrusion 22; the second protrusion is an arc-shaped protrusion.

[0100] Furthermore, the first threaded hole of the second connecting part below the main body can be fixedly connected to the processing plane of the casting equipment by bolts or other means in the prior art to fix the mold core; the bottom of the first side mold is provided with a second threaded hole 13, which is connected to the connecting rod of the casting equipment during the casting process.

[0101] Furthermore, the upper part of the first side mold is provided with a first arc-shaped protrusion 14, the upper part of the second side mold is provided with a second arc-shaped protrusion 23, the first connecting part extends to one side of the first arc-shaped protrusion, and the first arc-shaped protrusion and the second arc-shaped protrusion are respectively connected to the mold core to form a stable closed structure.

[0102] Furthermore, a T-shaped connecting groove 25 is provided below the second side mold. In this invention, another way to fix the second side mold is to fix it to the snap-fit ​​part of the casting equipment push rod through the T-shaped connecting groove, and then to push the second side mold out by the relative displacement between the second side mold and the mold core part from below through the equipment.

[0103] In this embodiment, the mold core and the first side mold are connected by a relative displacement engagement through a connecting groove, and the second side mold is connected to the mold core and the first side mold by a displacement engagement.

[0104] This embodiment provides an aluminum alloy T-type connector 4, which includes a transverse connecting part 41 and a longitudinal connecting part 42. The longitudinal connecting part is provided with a threaded part 43, which includes a first internal thread 431 and a second internal thread 432 symmetrically arranged.

[0105] In this embodiment, the first protrusion corresponds to the first internal thread inside the aluminum alloy T-joint, and the second protrusion corresponds to the second internal thread inside the aluminum alloy T-joint. Through the cooperation of the first and second protrusions, a threaded fixing structure inside the aluminum alloy T-joint can be formed during the casting process. During the casting process, the mold core of this application is used to cooperate in the processing and forming of the longitudinal connecting part of the metal T-connector.

[0106] A method for preparing the above-mentioned casting mold core includes the following steps:

[0107] S1. The external structure of the casting mold core is formed as a single piece through casting processing using existing technologies;

[0108] S2. Cut both sides of the casting mold core to cut out the second side mold, forming the second connecting surface of the mold core body;

[0109] S3. Cut the other two sides of the casting mold core to form a connecting groove in the mold core body, and at the same time separate the first side mold;

[0110] S4. Perform secondary processing on the connecting groove and the first connecting part to form a first arc-shaped guide groove and a first arc-shaped guide edge in the connecting groove, and to form a second arc-shaped guide groove and a second arc-shaped guide edge in the first connecting part;

[0111] S5. A first threaded hole is made below the first connecting part;

[0112] S6. Open a second threaded hole at the bottom of the first side mold;

[0113] S7. A T-shaped connecting groove is opened below the second side mold.

[0114] Example 3

[0115] This embodiment is consistent with the casting mold core structure provided in Embodiment 1. The difference is that the connecting groove 32 is a rectangular groove, and the two sides of the connecting groove are symmetrically provided with first arc-shaped guide grooves 321, and the front end of the connecting groove is symmetrically provided with first arc-shaped guide edges 322.

[0116] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0117] Furthermore, the horizontal cross-section of the first connecting part is rectangular, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0118] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0119] Furthermore, a second connecting part 34 is fixedly connected to the lower part of the main body, and a first threaded hole 341 is symmetrically provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0120] Example 4

[0121] This embodiment has the same casting mold core structure as that provided in Embodiment 2. The difference is that the connecting groove 32 is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0122] Furthermore, the connecting groove is a rectangular groove, and the two sides of the connecting groove are symmetrically provided with first arc-shaped guide grooves 321, and the front end of the connecting groove is symmetrically provided with first arc-shaped guide edges 322.

[0123] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0124] Furthermore, the horizontal cross-section of the first connecting part is rectangular, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0125] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0126] Furthermore, the main body 31 is a three-dimensional rectangular body. This design provides a basic guarantee for the connection stability of the mold core with the first side mold and the second side mold, respectively.

[0127] Example 5

[0128] This embodiment is consistent with the casting mold core structure provided in Embodiment 1. The difference is that the connecting groove 32 is a trapezoidal groove, and the two sides of the connecting groove are symmetrically provided with first arc-shaped guide grooves 321, and the front end of the connecting groove is symmetrically provided with first arc-shaped guide edges 322.

[0129] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0130] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0131] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0132] Furthermore, a second connecting part 34 is fixedly connected to the lower part of the main body, and a first threaded hole 341 is symmetrically provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0133] Example 6

[0134] This embodiment has the same casting mold core structure as that provided in Embodiment 2. The difference is that the connecting groove 32 is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0135] Furthermore, the connecting groove is a trapezoidal groove, and the connecting groove has symmetrical first arc-shaped guide grooves 321 on both sides, and the connecting groove has symmetrical first arc-shaped guide edges 322 at the front end.

[0136] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0137] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0138] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0139] Furthermore, the main body 31 is a trapezoidal body, which provides a basic guarantee for the connection stability of the mold core with the first side mold and the second side mold respectively.

[0140] Example 7

[0141] A casting mold core includes a first side mold 1, a second side mold 2, and a core portion 3. The first side mold is symmetrically connected to both sides of the core portion, and the second side mold is symmetrically disposed on both sides of the core portion. The core portion includes a body 31, on both sides of which are symmetrically provided connecting grooves 32, and on the other two sides of which are symmetrically provided first connecting surfaces 33. A first connecting portion 11 is provided on one side of the first side mold, and the first connecting portion is connected to the connecting groove. The second side mold is provided with a second connecting surface 21, and the first connecting surface is connected to the second connecting surface.

[0142] Furthermore, the first side mold, the second side mold, and the mold core are connected to form a cylindrical casting mold core.

[0143] Furthermore, the connecting groove 32 is any one of a rectangular groove, a dovetail groove, or a trapezoidal groove.

[0144] Furthermore, the connecting groove is a dovetail groove, and the connecting groove is provided with first arc-shaped guide grooves 321 symmetrically on both sides, and the front end of the connecting groove is provided with first arc-shaped guide edges 322 symmetrically.

[0145] Furthermore, the horizontal cross-section of the first connecting portion 11 is rectangular or trapezoidal.

[0146] Furthermore, the horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges 111, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves 112.

[0147] Furthermore, the second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove.

[0148] Furthermore, a second connecting part 34 is fixedly connected to the lower part of the main body, and a first threaded hole 341 is provided below the second connecting part, which can be connected to the casting equipment to fix the mold core part.

[0149] Furthermore, the body 31 is a trapezoidal body, which makes it easier for the first side mold, the second side mold and the mold core to move relative to each other.

[0150] Furthermore, the outer side of the first side mold is symmetrically provided with a first protrusion 12; the first protrusion is a stepped portion, and the side of the stepped portion is an arc-shaped surface; the outer side of the second side mold is symmetrically provided with a second protrusion 22; the second protrusion is an arc-shaped protrusion.

[0151] Furthermore, the first threaded hole of the second connecting part below the main body can be fixedly connected to the processing plane of the casting equipment by bolts or other means in the prior art to fix the mold core; the bottom of the first side mold is provided with a second threaded hole 13, which is connected to the connecting rod of the casting equipment during the casting process.

[0152] Furthermore, the upper part of the first side mold is provided with a first arc-shaped protrusion 14, the upper part of the second side mold is provided with a second arc-shaped protrusion 23, the first connecting part extends to one side of the first arc-shaped protrusion, and the first arc-shaped protrusion and the second arc-shaped protrusion are respectively connected to the mold core to form a stable closed structure.

[0153] In this embodiment, the mold core and the first side mold are connected by a relative displacement engagement through a connecting groove, and the second side mold is connected to the mold core and the first side mold by a displacement engagement.

[0154] A method for preparing the above-mentioned casting mold core includes the following steps:

[0155] S1. The external structure of the casting mold core is formed as a single piece through casting processing using existing technologies;

[0156] S2. Cut both sides of the casting mold core to cut out the second side mold, forming the second connecting surface of the mold core body;

[0157] S3. Cut the other two sides of the casting mold core to form a connecting groove in the mold core body, and at the same time separate the first side mold;

[0158] S4. Perform secondary processing on the connecting groove and the first connecting part to form a first arc-shaped guide groove and a first arc-shaped guide edge in the connecting groove, and to form a second arc-shaped guide groove and a second arc-shaped guide edge in the first connecting part;

[0159] S5. A first threaded hole is made below the first connecting part;

[0160] S6. A second threaded hole is opened at the bottom of the first side mold.

[0161] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0162] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. It should be noted that any technical features not described in detail in this invention can be implemented using any existing technology.

Claims

1. A casting mold core, characterized in that, The device includes a first side mold, a second side mold, and a mold core. The first side mold is symmetrically connected to both sides of the mold core, and the second side mold is symmetrically disposed on both sides of the mold core. The mold core includes a body, on both sides of which are symmetrically provided connecting grooves, and on the other two sides of which are symmetrically provided first connecting surfaces. One side of the first side mold has a first connecting portion, which is connected to the connecting groove. The second side mold has a second connecting surface, and the first connecting surface is connected to the second connecting surface. The first side mold has a first protrusion symmetrically arranged on its outer side; the first side mold has a first arc-shaped protrusion on its upper part, and the first connecting part extends to one side of the first arc-shaped protrusion; the second side mold has a second protrusion symmetrically arranged on its outer side; the second side mold has a second arc-shaped protrusion on its upper part; The connecting groove is a dovetail groove, and the connecting groove has symmetrical first arc-shaped guide grooves on both sides, and the connecting groove has symmetrical first arc-shaped guide edges at the front end. The horizontal cross-section of the first connecting part is trapezoidal, and the front end of the first connecting part is symmetrically provided with second arc-shaped guide edges on both sides, and the rear end of the first connecting part is symmetrically provided with second arc-shaped guide grooves on both sides. The second arc-shaped guide edge is correspondingly connected to the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected to the second arc-shaped guide groove; A second connecting part is fixedly connected to the lower part of the main body, and a first threaded hole is provided below the second connecting part; A T-shaped connecting groove is provided below the second side mold; By symmetrically setting connecting grooves on both sides of the main body, the connecting rod of the casting equipment is prevented from hitting the mold core component during relative movement after being connected to the casting equipment.

2. A casting mold core according to claim 1, characterized in that, A metal rod is fixedly connected to the second arc-shaped protrusion.

Images