CN110788283A - Casting mold core - Google Patents
Casting mold core Download PDFInfo
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- CN110788283A CN110788283A CN201911174485.5A CN201911174485A CN110788283A CN 110788283 A CN110788283 A CN 110788283A CN 201911174485 A CN201911174485 A CN 201911174485A CN 110788283 A CN110788283 A CN 110788283A
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- 238000005266 casting Methods 0.000 title claims abstract description 123
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 abstract description 36
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 description 12
- 229910000838 Al alloy Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/101—Permanent cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
Abstract
The invention belongs to the technical field of metal connecting piece casting molds, and provides a casting mold core which comprises a first side mold, a second side mold and a mold core part, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body, connecting grooves are symmetrically formed in two sides of the body, and first connecting surfaces are symmetrically formed in the other two sides of the body; one side of the first side die is provided with a first connecting part, and the first connecting part is connected with the connecting groove in a matching manner; the second side die is provided with a second connecting surface, and the first connecting surface is connected with the second connecting surface in a matching mode. The invention adopts a mode that the connecting groove is arranged on the body and the first connecting part is arranged on the first side die to be matched and connected, on one hand, the smoothness and the stability of the relative displacement of the internal structure can be ensured, on the other hand, a semi-conical hole is not required to be arranged at the connecting part of the connecting groove and the die core part, the production cost is saved, the production efficiency is improved, and simultaneously, the quality of a cast product can be ensured.
Description
Technical Field
The invention belongs to the technical field of metal connecting piece casting molds, and particularly relates to a casting mold core applied to a scaffold connecting piece in constructional engineering.
Background
The metal T-shaped connecting piece has the advantages of high specific strength and light weight as the T-shaped connecting piece, and is widely used, for example, the T-shaped connecting piece is applied to the connection of scaffolds in building engineering and the like. Metal T-connectors as structural components are typically produced by gravity casting, which refers to a process in which molten metal is poured into a mold under the force of the earth's gravity. The hollow part of the cast T-shaped joint has an internal clamping function shape, so a sand core is required to be used as a mold for production. The main component of the sand raw material is resin, a large amount of dust can be generated in the raw material treatment process, organic matters such as resin components can be decomposed in the sand core molding, core making and pouring processes, the adopted solvent can volatilize waste gas harmful to human bodies, acid and alkali substances in the preparation process are dissolved in water and are difficult to treat, green production is not facilitated, and meanwhile, the bad treatment can bring serious pollution to the environment. Moreover, the traditional sand core is used as a casting mold core, the quality of a casting is influenced by the tightness degree of the whole structure of the prepared sand core, the thickness and the uniformity of a fine grain region on the casting surface layer of a clamping part are influenced, air holes are easy to generate, and repair welding is needed.
In addition, a large amount of production data such as manpower, water, electricity and the like are needed for manufacturing the sand core mould, but one sand core mould can only produce one metal T-shaped connecting piece, the mould is manually installed once when one joint is produced, and the produced metal T-shaped connecting piece also cleans sand cores inside, so that the sand core mould is very inconvenient; meanwhile, the disposal of the waste sand after the disposable use also increases the production cost.
Based on the situation, Chinese patent 201910086850.0 provides a technical scheme for solving the problems in the metal T-shaped connecting piece casting mold core, and the metal casting mold core replaces a sand core mold in the prior art, so that the production efficiency is improved, and meanwhile, the production requirement of environmental protection is met. In the technical scheme, in the casting process, the connecting rod of the casting equipment is easy to touch parts of the die core part in the relative motion, a semi-conical hole is required to be formed in the lower end of the first connecting part for avoiding, but after a period of casting production, the cast molten metal is inevitably accumulated in the semi-conical hole, so that the production stability and the product quality are influenced; meanwhile, the metal liquid is remained in the semi-conical hole after solidification and is not easy to clean, the mold core is often required to be replaced, the production cost is increased, and the production efficiency is influenced. In addition, in the processing process of casting the mold core, the process requirement for forming the semicircular conical holes in the two sides of the mold core body is higher, and the processing difficulty is improved.
Disclosure of Invention
In view of the above, the present invention provides a casting mold core, wherein a connecting groove is formed in a body, and a first connecting portion is formed in a first side mold, so that on one hand, smoothness and stability of relative displacement between the first side mold and the mold core portion can be ensured, and on the other hand, a semi-conical hole does not need to be formed at a connecting position of the connecting groove and the mold core portion, so that production cost is saved, production efficiency is improved, and quality of a cast product can be ensured.
The invention adopts metal material preparation, can be repeatedly recycled, can be installed and connected to casting equipment for semi-automatic/automatic production, ensures the production stability and effectively improves the production efficiency; meanwhile, the mould provided by the invention also replaces a sand core mould in the prior art, does not generate raw materials, reagents and wastes polluting the environment, meets the requirement of green production, and is an environment-friendly, economical and practical production tool for casting aluminum alloy parts.
The technical scheme of the invention is as follows:
a casting mold core comprises a first side mold, a second side mold and a mold core part, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body, connecting grooves are symmetrically formed in two sides of the body, and first connecting surfaces are symmetrically formed in the other two sides of the body; one side of the first side die is provided with a first connecting part, and the first connecting part is connected with the connecting groove in a matching manner; the second side die is provided with a second connecting surface, and the first connecting surface is connected with the second connecting surface in a matching mode.
According to the invention, the first side die and the second side die are symmetrically arranged around the die core part, so that the demoulding and fastening effects of the internal clamping shape can be ensured, the integral casting die core can move relatively, and the relative displacement or disassembly among all parts of the casting die core is realized. The casting mold core structure has high compactness, and can effectively avoid pores in the produced metal T-shaped connecting piece.
Furthermore, the first side die, the second side die and the die core part are connected in a matched mode and can be enclosed to form a cylindrical casting die core. Particularly, the first side die, the second side die and the die core part are made of metal materials, and preferably, the metal T-shaped connecting piece casting die core is a high-quality carbon structural steel casting die core. Through the arrangement, the cooling effect can be effectively improved, the thickness and uniformity of the fine grain region on the casting surface layer at the inner clamping position are improved, and the reliability of the product is improved.
Further, the connecting groove is any one of a rectangular groove, a dovetail groove and a trapezoidal groove.
Furthermore, the connecting groove is a dovetail groove, first arc-shaped guide grooves are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges are symmetrically arranged at the front end of the connecting groove.
By symmetrically arranging the connecting grooves on two sides of the body, on one hand, the situation that a connecting rod of the casting equipment touches the die core part in relative motion after being connected with the casting equipment can be avoided; on the other hand, the arrangement of the semi-conical hole is cancelled, the production efficiency is improved and the production cost is reduced while the product quality of the metal T-shaped connecting piece in the casting process is ensured.
Further, the horizontal section of the first connecting part is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Through set up the mode that the spread groove sets up first connecting portion cooperation and is connected with first side mould at the body, can guarantee relative displacement's smoothness nature and stability between first side mould and the mold core portion on the one hand, on the other hand need not to open the half cone hole in the junction of spread groove and mould core portion, when saving manufacturing cost and improving production efficiency, also can guarantee the quality of cast product.
Furthermore, a second connecting portion is fixedly connected to the lower portion of the body, a first threaded hole is formed in the lower portion of the second connecting portion and can be connected with casting equipment, and a core portion of the die is fixed.
Further, the body is a step-type body or a three-dimensional rectangular body, and through the arrangement, the basic guarantee can be provided for the connection stability of the mold core part with the first side mold and the second side mold respectively. Preferably, the body is a trapezoidal body, so that the first side die, the second side die and the die core part can move relatively more easily.
Further, the outer side of the first side die is symmetrically provided with first protruding parts; the first protruding part is a ladder stand part, and the side surface of the ladder stand part is an arc-shaped surface; the outer side of the second side die is symmetrically provided with second protruding parts; the second protrusion is an arc protrusion.
In the invention, the first protruding part is arranged corresponding to the internal thread on one side in the metal T-shaped connecting piece, the second protruding part is arranged corresponding to the internal thread on the other side in the metal T-shaped connecting piece, and the thread fixing structure in the metal T-shaped connecting piece can be formed in the casting process through the matching effect of the first protruding part and the second protruding part. In the casting process, the mold core is used for machining and forming the longitudinal connecting part of the metal T-shaped connecting piece in a matched mode.
Further, the first threaded hole of the second connecting part below the body can be fixedly connected with a processing plane of the casting equipment through bolts and the like in the prior art to fix the die core part; and a second threaded hole is formed in the bottom of the first side die and is matched and connected with a connecting rod of casting equipment in the casting process.
Further, the upper portion of first side mould is equipped with first arc jut, second side mould upper portion is equipped with second arc jut, first connecting portion extend to one side of first arc jut, second arc jut are connected with the mold core portion cooperation respectively, form stable closed structure.
Furthermore, second arc jut fixedly connected with metal pole, after the casting is accomplished, can moderate degree strike the metal pole for casting mold core and product separation, can regard as the handle with the metal pole again, take out the second side mould from the as cast product, press from both sides the product again. In the invention, one fixing mode of the second side die is that the first connecting surface and the second connecting surface are attached to realize relative movement and matching connection with the die core part, and the second side die and the die core part are installed and separated from each other from the upper part by taking the metal rod as a handle.
Furthermore, a T-shaped connecting groove is arranged below the second side die. In the invention, the other fixing mode of the second side mold is that the second side mold is fixedly connected with a clamping part of a push rod of the casting equipment through a T-shaped connecting groove, and then the relative displacement of the second side mold and the mold core part is realized from the lower part through the equipment, so that the second side mold is ejected out.
The preparation method of the casting mold core comprises the following steps:
s1, forming an external structure of an integrated casting mold core through casting processing in the prior art;
s2, cutting two sides of the casting mold core respectively, and cutting out a second side mold to form a second connecting surface of the mold core part body;
s3, cutting the other two sides of the casting mold core respectively, forming a connecting groove on the mold core part body, and separating the first side mold;
s4, performing secondary processing on the connecting groove and the first connecting part, forming a first arc-shaped guide groove and a first arc-shaped guide edge on the connecting groove, and forming a second arc-shaped guide groove and a second arc-shaped guide edge on the first connecting part;
s5, forming a first threaded hole below the first connecting part;
s6, forming a second threaded hole in the bottom of the first side die;
and S7, opening a T-shaped connecting groove below the second side die or welding a metal rod above the second side die.
The processing method in step S7 is an alternative process.
The invention has the beneficial effects that:
1. the invention replaces the sand core adopted by the traditional casting, saves the use of the sand core production, reduces the environmental pollution and lowers the production cost.
2. The post-treatment links of the casting and the casting mold core are reduced, the production cost is reduced, and the production efficiency is improved.
3. The mold core has good cooling effect in the casting process, can improve the thickness and uniformity of the fine grain region on the casting surface layer at the inner clamping position, and improves the reliability of the product.
4. The invention can be adaptively connected with semi-automatic or full-automatic equipment and can meet the requirement of industrial production.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram according to an embodiment of the present invention;
FIG. 5 is a schematic view of the construction of the die core of the present invention;
FIG. 6 is a schematic view of the construction of the die core of the present invention;
FIG. 7 is a schematic diagram of a first side mold of the present invention;
FIG. 8 is a partial schematic view of the present invention;
FIG. 9 is a partial schematic view of the present invention;
FIG. 10 is a bottom view of the structure of one embodiment of the present invention;
FIG. 11 is a bottom view of the structure of one embodiment of the present invention;
FIG. 12 is a bottom view of the structure of one embodiment of the present invention;
FIG. 13 is a bottom view of the structure of one embodiment of the present invention;
FIG. 14 is a bottom view of the structure of one embodiment of the present invention;
FIG. 15 is a bottom view of the structure of one embodiment of the present invention;
FIG. 16 is a schematic structural view of an aluminum alloy T-joint cast in accordance with the present invention;
FIG. 17 is a schematic structural view of an aluminum alloy T-joint cast in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A casting mold core comprises a first side mold 1, a second side mold 2 and a mold core part 3, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body 31, connecting grooves 32 are symmetrically arranged on two sides of the body, and first connecting surfaces 33 are symmetrically arranged on the other two sides of the body; a first connecting part 11 is arranged on one side of the first side die and is connected with the connecting groove in a matching manner; the second side mold is provided with a second connecting surface 21, and the first connecting surface is connected with the second connecting surface in a matching way.
According to the invention, the first side die and the second side die are symmetrically arranged around the die core part, so that the demoulding and fastening effects of the internal clamping shape can be ensured, the integral casting die core can move relatively, and the relative displacement or disassembly among all parts of the casting die core is realized. The casting mold core structure has high compactness, and can effectively avoid pores in the produced metal T-shaped connecting piece.
Furthermore, the first side die, the second side die and the die core part are connected in a matched mode and can be enclosed to form a cylindrical casting die core. Particularly, the first side die, the second side die and the die core part are made of metal materials, and preferably, the metal T-shaped connecting piece casting die core is a high-quality carbon structural steel casting die core. Through the arrangement, the cooling effect can be effectively improved, the thickness and uniformity of the fine grain region on the casting surface layer at the inner clamping position are improved, and the reliability of the product is improved.
Further, the connecting groove 32 is any one of a rectangular groove, a dovetail groove and a trapezoidal groove.
Further, the connecting groove is a dovetail groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
By symmetrically arranging the connecting grooves on two sides of the body, on one hand, the situation that a connecting rod of the casting equipment touches the die core part in relative motion after being connected with the casting equipment can be avoided; on the other hand, the arrangement of the semi-conical hole is cancelled, the production efficiency is improved and the production cost is reduced while the product quality of the metal T-shaped connecting piece in the casting process is ensured.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Through set up the mode that the spread groove sets up first connecting portion cooperation and is connected with first side mould at the body, can guarantee relative displacement's smoothness nature and stability between first side mould and the mold core portion on the one hand, on the other hand need not to open the half cone hole in the junction of spread groove and mould core portion, when saving manufacturing cost and improving production efficiency, also can guarantee the quality of cast product.
Further, a second connecting portion 34 is fixedly connected to the lower portion of the body, a first threaded hole 341 is formed below the second connecting portion, the second connecting portion can be connected with a casting device, and the core portion of the die is fixed.
Further, the body 31 is a step-shaped body, so that the first side die, the second side die and the die core part can move relatively more easily.
Further, the outer side of the first side die is symmetrically provided with first protruding parts 12; the first protruding part is a ladder stand part, and the side surface of the ladder stand part is an arc-shaped surface; the outer side of the second side die is symmetrically provided with second protruding parts 22; the second protrusion is an arc protrusion.
Further, the first threaded hole of the second connecting part below the body can be fixedly connected with a processing plane of the casting equipment through bolts and the like in the prior art to fix the die core part; and a second threaded hole 13 is formed in the bottom of the first side die and is matched and connected with a connecting rod of casting equipment in the casting process.
Further, the upper portion of first side mould is equipped with first arc protruding portion 14, second side mould upper portion is equipped with second arc protruding portion 23, first connecting portion extend to one side of first arc protruding portion, second arc protruding portion are connected with the mold core portion cooperation respectively, form stable closed structure.
Further, the second arc-shaped protruding portion is fixedly connected with a metal rod 24, after casting is completed, the metal rod can be appropriately knocked, so that the casting mold core is separated from a product, the metal rod can be used as a handle, the second side mold is taken out of the cast product, and the product is clamped out. In the invention, one fixing mode of the second side die is that the first connecting surface and the second connecting surface are attached to realize relative movement and matching connection with the die core part, and the second side die and the die core part are installed and separated from each other from the upper part by taking the metal rod as a handle.
In this embodiment, the mold core portion and the first side mold are connected in a relatively displaceable manner through the connecting groove, and the second side mold is connected in a displaceable manner with the mold core portion and the first side mold respectively.
The present embodiment provides an aluminum alloy T-shaped joint 4, which includes a transverse connecting portion 41 and a longitudinal connecting portion 42, wherein a threaded portion 43 is disposed in the longitudinal connecting portion, and the threaded portion includes a first internal thread 431 and a second internal thread 432 that are symmetrically disposed.
In this embodiment, the first protrusion corresponds to a first internal thread inside the aluminum alloy T-shaped joint, the second protrusion corresponds to a second internal thread inside the aluminum alloy T-shaped joint, and a thread fixing structure inside the aluminum alloy T-shaped joint can be formed in the casting process through the cooperation of the first protrusion and the second protrusion. In the casting process, the mold core is used for machining and forming the longitudinal connecting part of the metal T-shaped connecting piece in a matched mode.
The preparation method of the casting mold core comprises the following steps:
s1, forming an external structure of an integrated casting mold core through casting processing in the prior art;
s2, cutting two sides of the casting mold core respectively, and cutting out a second side mold to form a second connecting surface of the mold core part body;
s3, cutting the other two sides of the casting mold core respectively, forming a connecting groove on the mold core part body, and separating the first side mold;
s4, performing secondary processing on the connecting groove and the first connecting part, forming a first arc-shaped guide groove and a first arc-shaped guide edge on the connecting groove, and forming a second arc-shaped guide groove and a second arc-shaped guide edge on the first connecting part;
s5, forming a first threaded hole below the first connecting part;
s6, forming a second threaded hole in the bottom of the first side die;
and S7, welding a metal rod above the second side die.
Example 2
A casting mold core comprises a first side mold 1, a second side mold 2 and a mold core part 3, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body 31, connecting grooves 32 are symmetrically arranged on two sides of the body, and first connecting surfaces 33 are symmetrically arranged on the other two sides of the body; a first connecting part 11 is arranged on one side of the first side die and is connected with the connecting groove in a matching manner; the second side mold is provided with a second connecting surface 21, and the first connecting surface is connected with the second connecting surface in a matching way.
According to the invention, the first side die and the second side die are symmetrically arranged around the die core part, so that the demoulding and fastening effects of the internal clamping shape can be ensured, the integral casting die core can move relatively, and the relative displacement or disassembly among all parts of the casting die core is realized. The casting mold core structure has high compactness, and can effectively avoid pores in the produced metal T-shaped connecting piece.
Furthermore, the first side die, the second side die and the die core part are connected in a matched mode and can be enclosed to form a cylindrical casting die core. Particularly, the first side die, the second side die and the die core part are made of metal materials, and preferably, the metal T-shaped connecting piece casting die core is a high-quality carbon structural steel casting die core. Through the arrangement, the cooling effect can be effectively improved, the thickness and uniformity of the fine grain region on the casting surface layer at the inner clamping position are improved, and the reliability of the product is improved.
Further, the connecting groove 32 is any one of a rectangular groove, a dovetail groove and a trapezoidal groove.
Further, the connecting groove is a dovetail groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
By symmetrically arranging the connecting grooves on two sides of the body, on one hand, the situation that a connecting rod of the casting equipment touches the die core part in relative motion after being connected with the casting equipment can be avoided; on the other hand, the arrangement of the semi-conical hole is cancelled, the production efficiency is improved and the production cost is reduced while the product quality of the metal T-shaped connecting piece in the casting process is ensured.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Through set up the mode that the spread groove sets up first connecting portion cooperation and is connected with first side mould at the body, can guarantee relative displacement's smoothness nature and stability between first side mould and the mold core portion on the one hand, on the other hand need not to open the half cone hole in the junction of spread groove and mould core portion, when saving manufacturing cost and improving production efficiency, also can guarantee the quality of cast product.
Further, a second connecting portion 34 is fixedly connected to the lower portion of the body, a first threaded hole 341 is formed below the second connecting portion, the second connecting portion can be connected with a casting device, and the core portion of the die is fixed.
Further, the body 31 is a step-shaped body, so that the first side die, the second side die and the die core part can move relatively more easily.
Further, the outer side of the first side die is symmetrically provided with first protruding parts 12; the first protruding part is a ladder stand part, and the side surface of the ladder stand part is an arc-shaped surface; the outer side of the second side die is symmetrically provided with second protruding parts 22; the second protrusion is an arc protrusion.
Further, the first threaded hole of the second connecting part below the body can be fixedly connected with a processing plane of the casting equipment through bolts and the like in the prior art to fix the die core part; and a second threaded hole 13 is formed in the bottom of the first side die and is matched and connected with a connecting rod of casting equipment in the casting process.
Further, the upper portion of first side mould is equipped with first arc protruding portion 14, second side mould upper portion is equipped with second arc protruding portion 23, first connecting portion extend to one side of first arc protruding portion, second arc protruding portion are connected with the mold core portion cooperation respectively, form stable closed structure.
Further, a T-shaped connecting groove 25 is arranged below the second side mold. In the invention, the other fixing mode of the second side mold is that the second side mold is fixedly connected with a clamping part of a push rod of the casting equipment through a T-shaped connecting groove, and then the relative displacement of the second side mold and the mold core part is realized from the lower part through the equipment, so that the second side mold is ejected out.
In this embodiment, the mold core portion and the first side mold are connected in a relatively displaceable manner through the connecting groove, and the second side mold is connected in a displaceable manner with the mold core portion and the first side mold respectively.
The present embodiment provides an aluminum alloy T-shaped joint 4, which includes a transverse connecting portion 41 and a longitudinal connecting portion 42, wherein a threaded portion 43 is disposed in the longitudinal connecting portion, and the threaded portion includes a first internal thread 431 and a second internal thread 432 that are symmetrically disposed.
In this embodiment, the first protrusion corresponds to a first internal thread inside the aluminum alloy T-shaped joint, the second protrusion corresponds to a second internal thread inside the aluminum alloy T-shaped joint, and a thread fixing structure inside the aluminum alloy T-shaped joint can be formed in the casting process through the cooperation of the first protrusion and the second protrusion. In the casting process, the mold core is used for machining and forming the longitudinal connecting part of the metal T-shaped connecting piece in a matched mode.
The preparation method of the casting mold core comprises the following steps:
s1, forming an external structure of an integrated casting mold core through casting processing in the prior art;
s2, cutting two sides of the casting mold core respectively, and cutting out a second side mold to form a second connecting surface of the mold core part body;
s3, cutting the other two sides of the casting mold core respectively, forming a connecting groove on the mold core part body, and separating the first side mold;
s4, performing secondary processing on the connecting groove and the first connecting part, forming a first arc-shaped guide groove and a first arc-shaped guide edge on the connecting groove, and forming a second arc-shaped guide groove and a second arc-shaped guide edge on the first connecting part;
s5, forming a first threaded hole below the first connecting part;
s6, forming a second threaded hole in the bottom of the first side die;
and S7, opening a T-shaped connecting groove below the second side die.
Example 3
The present embodiment is identical to the casting mold core structure provided in embodiment 1, except that the connecting groove 32 is a rectangular groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is rectangular, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Further, a second connecting portion 34 is fixedly connected to the lower portion of the body, and first threaded holes 341 are symmetrically formed below the second connecting portion and can be connected with a casting device to fix the die core.
Example 4
This embodiment is identical to the casting core structure provided in embodiment 2, except that the connecting groove 32 is any one of a rectangular groove, a dovetail groove, and a trapezoidal groove.
Further, the connecting groove is a rectangular groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is rectangular, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Further, the body 31 is a three-dimensional rectangular body, and through the arrangement, a basic guarantee can be provided for the connection stability of the mold core part and the first side mold and the second side mold respectively.
Example 5
The casting mold core structure of this embodiment is the same as the casting mold core structure provided in embodiment 1, except that the connecting groove 32 is a trapezoidal groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Further, a second connecting portion 34 is fixedly connected to the lower portion of the body, and first threaded holes 341 are symmetrically formed below the second connecting portion and can be connected with a casting device to fix the die core.
Example 6
This embodiment is identical to the casting core structure provided in embodiment 2, except that the connecting groove 32 is any one of a rectangular groove, a dovetail groove, and a trapezoidal groove.
Further, the connecting groove is a trapezoidal groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Further, body 31 is the step-ladder type body, through this setting, can provide basic guarantee for the mold core part respectively with the stability of being connected of first side form, second side form.
Example 7
A casting mold core comprises a first side mold 1, a second side mold 2 and a mold core part 3, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body 31, connecting grooves 32 are symmetrically arranged on two sides of the body, and first connecting surfaces 33 are symmetrically arranged on the other two sides of the body; a first connecting part 11 is arranged on one side of the first side die and is connected with the connecting groove in a matching manner; the second side mold is provided with a second connecting surface 21, and the first connecting surface is connected with the second connecting surface in a matching way.
Furthermore, the first side die, the second side die and the die core part are connected in a matched mode and can be enclosed to form a cylindrical casting die core.
Further, the connecting groove 32 is any one of a rectangular groove, a dovetail groove and a trapezoidal groove.
Further, the connecting groove is a dovetail groove, first arc-shaped guide grooves 321 are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges 322 are symmetrically arranged at the front end of the connecting groove.
Further, the horizontal cross section of the first connecting portion 11 is rectangular or trapezoidal.
Furthermore, the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges 111 are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves 112 are symmetrically arranged on two sides of the rear end of the first connecting portion.
Further, the second arc-shaped guide edge is correspondingly connected with the first arc-shaped guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
Further, a second connecting portion 34 is fixedly connected to the lower portion of the body, a first threaded hole 341 is formed below the second connecting portion, the second connecting portion can be connected with a casting device, and the core portion of the die is fixed.
Further, the body 31 is a step-shaped body, so that the first side die, the second side die and the die core part can move relatively more easily.
Further, the outer side of the first side die is symmetrically provided with first protruding parts 12; the first protruding part is a ladder stand part, and the side surface of the ladder stand part is an arc-shaped surface; the outer side of the second side die is symmetrically provided with second protruding parts 22; the second protrusion is an arc protrusion.
Further, the first threaded hole of the second connecting part below the body can be fixedly connected with a processing plane of the casting equipment through bolts and the like in the prior art to fix the die core part; and a second threaded hole 13 is formed in the bottom of the first side die and is matched and connected with a connecting rod of casting equipment in the casting process.
Further, the upper portion of first side mould is equipped with first arc protruding portion 14, second side mould upper portion is equipped with second arc protruding portion 23, first connecting portion extend to one side of first arc protruding portion, second arc protruding portion are connected with the mold core portion cooperation respectively, form stable closed structure.
In this embodiment, the mold core portion and the first side mold are connected in a relatively displaceable manner through the connecting groove, and the second side mold is connected in a displaceable manner with the mold core portion and the first side mold respectively.
The preparation method of the casting mold core comprises the following steps:
s1, forming an external structure of an integrated casting mold core through casting processing in the prior art;
s2, cutting two sides of the casting mold core respectively, and cutting out a second side mold to form a second connecting surface of the mold core part body;
s3, cutting the other two sides of the casting mold core respectively, forming a connecting groove on the mold core part body, and separating the first side mold;
s4, performing secondary processing on the connecting groove and the first connecting part, forming a first arc-shaped guide groove and a first arc-shaped guide edge on the connecting groove, and forming a second arc-shaped guide groove and a second arc-shaped guide edge on the first connecting part;
s5, forming a first threaded hole below the first connecting part;
and S6, forming a second threaded hole in the bottom of the first side die.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art.
Claims (10)
1. A casting mold core is characterized by comprising a first side mold, a second side mold and a mold core part, wherein the first side mold is symmetrically connected with two sides of the mold core part, and the second side mold is symmetrically arranged on two sides of the mold core; the mold core part comprises a body, connecting grooves are symmetrically formed in two sides of the body, and first connecting surfaces are symmetrically formed in the other two sides of the body; one side of the first side die is provided with a first connecting part, and the first connecting part is connected with the connecting groove in a matching manner; the second side die is provided with a second connecting surface, and the first connecting surface is connected with the second connecting surface in a matching mode.
2. The casting core according to claim 1, wherein the connecting groove is any one of a rectangular groove, a dovetail groove, and a trapezoidal groove.
3. The casting mold core according to claim 2, wherein the connecting groove is a dovetail groove, first arc-shaped guide grooves are symmetrically arranged on two sides in the connecting groove, and first arc-shaped guide edges are symmetrically arranged at the front end of the connecting groove.
4. The casting core according to claim 3, characterized in that the horizontal cross section of the first connecting portion is rectangular or trapezoidal.
5. The casting mold core according to claim 4, wherein the horizontal cross section of the first connecting portion is trapezoidal, second arc-shaped guide edges are symmetrically arranged on two sides of the front end of the first connecting portion, and second arc-shaped guide grooves are symmetrically arranged on two sides of the rear end of the first connecting portion.
6. The casting core according to claim 5, wherein the second arcuate guide edge is correspondingly connected to the first arcuate guide groove; the first arc-shaped guide edge is correspondingly connected with the second arc-shaped guide groove.
7. The casting core according to claim 1, wherein a second connecting portion is fixedly connected to a lower portion of the body, and a first threaded hole is formed below the second connecting portion.
8. The casting mold core according to claim 1, wherein the first side mold is symmetrically provided with first protrusions on the outer side; the upper part of the first side die is provided with a first arc-shaped protrusion part, and the first connecting part extends to one side of the first arc-shaped protrusion part; the outer side of the second side die is symmetrically provided with second protruding parts; and a second arc-shaped protruding part is arranged at the upper part of the second side die.
9. The casting core according to claim 8, wherein the second arcuate projection is fixedly attached to a metal rod.
10. The casting core according to claim 1, characterized in that a T-shaped connecting groove is provided below the second side mold.
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| CN201911174485.5A CN110788283A (en) | 2019-11-26 | 2019-11-26 | Casting mold core |
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| CN201911174485.5A CN110788283A (en) | 2019-11-26 | 2019-11-26 | Casting mold core |
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Cited By (1)
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| CN116727608A (en) * | 2023-06-15 | 2023-09-12 | 肇庆本田金属有限公司 | Mould core-pulling structure |
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