CN114951591A - Die for preventing inner hole wall of motor end cover casting from being die-cast and shrunk and using method - Google Patents
Die for preventing inner hole wall of motor end cover casting from being die-cast and shrunk and using method Download PDFInfo
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- CN114951591A CN114951591A CN202210624335.5A CN202210624335A CN114951591A CN 114951591 A CN114951591 A CN 114951591A CN 202210624335 A CN202210624335 A CN 202210624335A CN 114951591 A CN114951591 A CN 114951591A
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- 238000005266 casting Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000004512 die casting Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005058 metal casting Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2218—Cooling or heating equipment for dies
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Abstract
The invention provides a die for preventing the inner hole wall of a motor end cover casting from being die-cast and shrinkage and a using method thereof, wherein a shaft hole forming plug-in is arranged on an upper die plate and comprises a boss sleeve and a shaft hole inserted bar, a mounting hole which is matched with the shaft hole inserted bar in shape is arranged in the boss sleeve, and the shaft hole inserted bar is fixed in the mounting hole; when the die is assembled, the shaft hole insertion rod penetrates through the die cavity, the outer wall of the shaft hole insertion rod corresponds to the inner wall of a shaft hole of the motor end cover, a boss forming cavity is arranged on one side, close to the lower template, of the boss sleeve, a first cooling water cavity is arranged inside the shaft hole insertion rod, and a second cooling water cavity is arranged in the boss sleeve; the water pipe is arranged on the shaft hole forming insert and communicated with the first cooling water cavity and the second cooling water cavity. Therefore, the shaft hole and the boss can be locally cooled in the die-casting process, and the die-casting shrinkage cavity of the inner hole wall of the motor end cover can be prevented.
Description
Technical Field
The invention relates to the field of advanced manufacturing and automation, in particular to a die for preventing shrinkage cavity of a motor end cover casting in die-casting and a using method thereof.
Background
Die casting is a metal forming precision casting method which is developed quickly in the modern metal processing technology and has high efficiency and less cutting. The die casting has high dimensional accuracy, low surface roughness value and higher strength and hardness. Due to the advantages, the die casting process method is widely applied to various industries of national economy. As shown in fig. 1 and 2, the motor end cover 7 includes a cover 71, a shaft hole 72 is formed on the cover 71, and a boss 73 is formed on the outer side of the cover 71 corresponding to the shaft hole 72. The motor end cover 7 is generally cast by a die-casting process, and the position of the shaft hole 72 and the boss 73 relates to the installation of a bearing and a sealing end cover, so that the requirement on the dimensional accuracy is high. At the fashioned in-process of die-casting, generally adopt holistic cooling, wholly cool down to the formed part promptly, inevitable when the cooling is incomplete, the whole circumstances of contracting that can take place of motor end cover, and the contracting of department will lead to in shaft hole 72 and boss 73 position, and follow-up part installation complex precision descends, influences the quality of motor product. .
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the die for preventing the inner hole wall of the motor end cover casting from being subjected to compression casting shrinkage, so that the shaft hole shrinkage of the motor end cover casting is prevented, and the product quality is improved.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, includes: the die comprises an upper die plate and a lower die plate, wherein a cavity is formed between the upper die plate and the lower die plate, sprue bush mounting cavities are formed in the upper die plate and the lower die plate, and the sprue bush mounting cavities are communicated with the cavity through runners. The upper template is provided with a shaft hole forming plug-in unit, the shaft hole forming plug-in unit comprises a boss sleeve and a shaft hole inserted bar, a mounting hole which is matched with the shaft hole inserted bar in shape is formed in the boss sleeve, and the shaft hole inserted bar is fixed in the mounting hole; when the die is assembled, the shaft hole insertion rod penetrates through the die cavity, the outer wall of the shaft hole insertion rod corresponds to the inner wall of a shaft hole of the motor end cover, a boss forming cavity is arranged on one side, close to the lower template, of the boss sleeve, a first cooling water cavity is arranged inside the shaft hole insertion rod, and a second cooling water cavity is arranged in the boss sleeve; the water pipe is arranged on the shaft hole forming insert and communicated with the first cooling water cavity and the second cooling water cavity.
In the device, the principle of the die for preventing the shrinkage cavity of the inner hole wall of the motor end cover casting is that the upper die plate is additionally provided with the shaft hole forming insert, the boss forming cavity in the boss sleeve is matched with the outer side shape of the boss and used for wrapping the boss, the shaft hole insert rod is matched with the shaft hole in shape and used for completing the forming of the shaft hole, the second cooling water cavity and the first cooling water cavity are arranged in the boss sleeve and the shaft hole insert rod and a water pipeline is arranged in a penetrating mode, so that the shaft hole and the boss can be locally cooled in the die-casting process, and the internal pressure of the cavity is stored in the die-casting process, so that the whole internal casting material has an outward-expanding state, and the shrinkage condition of the shaft hole and the boss due to local cooling can be almost ignored. Therefore, when the forming is completed and the die is opened, when the motor end cover integrally retracts, the influence on the corresponding shaft hole and the boss is small. Therefore, the die for preventing the shrinkage cavity of the motor end cover casting during die-casting can prevent the shrinkage cavity of the motor end cover casting during die-casting.
Further, a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, the shaft hole inserted bar is including the inserted bar body and end cap, first cooling water cavity sets up on the inserted bar body, inserted bar body upper end opening, the end cap with inserted bar body open end inner wall threaded connection. As the preferable scheme of the invention, the plug is used for sealing the first cooling water cavity in the inserted rod body, can adapt to disassembly and assembly, and has a reasonable structure.
Further, a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, the whole ring that is in second cooling water cavity, second cooling water cavity centers on the outside in boss profiled cavity. As a preferable aspect of the present invention, uniformity and sufficiency of cooling can be ensured.
Further, a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, the boss cover still includes the annular lid, the annular lid sets up in second cooling water cavity upper end, the annular is covered and is equipped with the fixed orifices that a set of circumference set up, corresponds the fixed orifices, the boss is sheathe in and is equipped with a set of connecting hole. As the preferable scheme of the invention, the annular cover and the boss sleeve can be fixed on the fixing hole and the connecting hole in a penetrating way through the connecting piece, and the shaft hole forming plug-in can be connected with the external push rod through the fixing hole.
Further, the die for preventing the shrinkage cavity from being die-cast on the inner hole wall of the motor end cover casting is characterized in that the connecting hole is formed in the upper end of the wall shell, corresponding to the inner side of the second cooling water cavity, of the boss sleeve. The preferred embodiment of the present invention has good overall compactness.
Further, a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, the outer fringe that the annular lid kept away from a second cooling water cavity terminal surface is equipped with the extension flange, corresponds the extension flange, the boss sheathes in and is equipped with the step anchor ring that suits with the fixed orifices shape, be equipped with first sealing ring between fixed orifices and the step anchor ring. In addition, nearly second cooling water cavity one end on the annular lid lateral surface, the cover is equipped with the second sealing ring, corresponds the second sealing ring the annular is covered and is equipped with the installation annular. As a preferable scheme of the invention, two sealing rings are arranged, so that the sealing performance of the second cooling water cavity can be ensured.
Further, the die for preventing the shrinkage cavity from being die-cast on the inner hole wall of the motor end cover casting comprises a water inlet pipe and a water outlet pipe which are symmetrically arranged, the water inlet pipe and the water outlet pipe are integrally L-shaped and comprise a transverse through pipe and a longitudinal extending pipe which are mutually connected, the transverse through pipe penetrates through the side wall of the boss sleeve and transversely extends until the transverse through pipe enters the first cooling water cavity; the longitudinal extension pipe is arranged at one end, far away from the first cooling water cavity, of the transverse pipe, the longitudinal extension pipe is perpendicular to the transverse pipe, and one side, far away from the transverse pipe, of the longitudinal extension pipe extends out of the end face of the upper template; and a through hole is formed in the side wall of the transverse pipe corresponding to the position of the second cooling water cavity. As the preferred scheme of the invention, the whole circulating water path has the advantages of exquisite design, good structure compactness and furthest improved cooling effect. Preferably, a pair of water passing grooves with downward openings are formed in the plug, and one ends of the pair of transverse pipes, which are far away from the longitudinal extension pipe, penetrate into the side wall of the plug respectively and enter the water passing grooves.
Further, the mould for preventing motor end cover foundry goods inner bore wall die-casting shrinkage cavity, corresponding to the part that the water service pipe extends the shaft hole shaping plug-in components outside, be equipped with the shifting chute on the cope match-plate pattern, when the die sinking, when the shaft hole shaping plug-in components removed towards the cope match-plate pattern direction along with the formed part, the water service pipe can remove in the shifting chute along with the shaft hole shaping plug-in components. As a preferable aspect of the present invention, preferably, a pair of chute inserts are provided in the moving chute, and the chute inserts are provided outside the longitudinally extending pipe to ensure stability when the water outlet pipe moves up and down.
Furthermore, the die for preventing the shrinkage cavity of the inner hole wall of the motor end cover casting in die casting is characterized in that the lower template is also provided with a group of circumferentially arranged mounting hole forming rods, and the group of mounting hole forming rods penetrate through the cavity until extending into the upper template; and a group of thimble holes are formed in the lower template in a penetrating manner, and extend into the lower end face of the cavity.
Further, the use method of the die for preventing the shrinkage cavity from being die-cast on the inner hole wall of the motor end cover casting comprises the following steps:
s1, assembling the die, wherein the upper template and the lower template are respectively installed on a sheathing board of the die, a sprue bush is installed at a position corresponding to a sprue bush installation cavity, the upper template and the lower template are mutually attached, the upper end and the lower end of the shaft hole forming plug-in are respectively flush with the end surfaces of the upper template and the lower template, and a push rod is externally connected to the upper end of the shaft hole forming plug-in;
s2, molding, namely injecting a metal casting material from the sprue bush, and flowing the metal casting material into the cavity until the inside of the cavity is filled;
s3, cooling the shrinkage-proof hole, wherein cooling water is introduced into the first cooling water cavity and the second cooling water cavity from the water inlet pipe respectively and then is discharged from the water outlet pipe to perform local cooling on the shaft hole and the boss of the motor cover;
s4, separating once, wherein a push rod externally connected with the shaft hole forming plug-in piece pushes the shaft hole forming plug-in piece to move downwards towards one side of the lower template, and at the moment, the formed piece and the lower template integrally move downwards to complete the separation of the formed piece and the upper template;
s5, secondary separation, namely jacking the whole of the formed piece and the shaft hole forming insert through a thimble arranged on a thimble hole to complete the separation of the formed piece and the lower template;
s6 and discharging, wherein the shaft hole forming plug-in is reset by upward movement of the push rod, the group of mounting hole forming rods move downward until penetrating out of the mounting holes of the formed parts, the formed parts are taken out, and discharging is completed.
The technical scheme shows that the invention has the following beneficial effects:
1. the invention provides a die for preventing shrinkage cavity of the inner hole wall of a motor end cover casting, which is characterized in that an axle hole forming plug-in is additionally arranged on an upper die plate, wherein a boss forming cavity in a boss sleeve is matched with the outer side shape of a boss and used for wrapping the boss, an axle hole plug-in rod is matched with the axle hole in shape and used for completing the forming of the axle hole, a second cooling water cavity and a first cooling water cavity are arranged in the boss sleeve and the axle hole plug-in rod and a water pipeline is arranged in a penetrating way, so that the axle hole and the boss can be locally cooled in the die-casting process, and internal pressure is stored in the cavity in the die-casting process, so that the whole internal casting material has an outward expansion state, and the retraction condition of the axle hole and the boss due to local cooling can be almost ignored. Therefore, when the forming is completed and the die is opened, the influence on the corresponding shaft hole and the boss is small when the motor end cover integrally retracts. Therefore, the die for preventing the inner hole wall of the motor end cover casting from being die-cast with shrinkage cavities can prevent the inner hole wall of the motor end cover from being die-cast with shrinkage cavities.
2. The invention provides a die for preventing the inner hole wall of a motor end cover casting from being die-cast and contracted, the whole circulating water path is exquisite in design and good in structure compactness, and the cooling effect is improved to the maximum extent.
Drawings
FIG. 1 is a schematic view of a motor end cap to be cast according to the present invention;
FIG. 2 is a schematic view of a motor end cover structure to be cast according to the present invention;
FIG. 3 is a plan view of the die for preventing shrinkage cavity of the inner hole wall of the motor end cover casting in the invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of a portion of the area circled A in FIG. 4;
FIG. 6 is an exploded view of a die for preventing shrinkage cavity from being die-cast on the inner hole wall of a motor end cover casting according to the invention;
FIG. 7 is an exploded cross-sectional view of the shaft hole forming insert and the water pipe in the die for preventing the shrinkage cavity from being die-cast on the inner hole wall of the motor end cover casting according to the present invention;
fig. 8 is a partially enlarged view of the area circled B in fig. 7.
In the figure: 1-upper template; 11-a moving slot; 12-chute insert; 2-a lower template; 21-mounting hole forming rods; 22-thimble hole; 3-molding the cavity; 4-a sprue bush mounting cavity; 5-forming an insert in the shaft hole; 51-boss sleeve; 510-a second cooling water chamber; 511-mounting holes; 512-boss forming cavity; 513-annular cover; 5131-fixing holes; 5132-an extension flange; 5133-installing a ring groove; 514-connecting holes; 515-stepped annulus; 52-shaft hole inserted link; 520-a first cooling water cavity; 521-a bayonet body; 522-plug; 5221 water trough; 6-water pipeline; 601-traversing tube; 6011-perforating; 602-a longitudinally extending tube; 61-a water inlet pipe; 62-water outlet pipe; 7-motor end cover; 71-a cover body; 72-shaft hole; 73-a boss; 81-a first sealing ring; 82-second sealing ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The die for preventing the inner hole wall of the motor end cover casting from being die-cast and contracted and shown in the figures 3 to 8 comprises an upper template 1 and a lower template 2, wherein a cavity 3 is arranged between the upper template 1 and the lower template 2, a sprue bush mounting cavity 4 is arranged on the upper template 1 and the lower template 2, and the sprue bush mounting cavity 4 is communicated with the cavity 3 through a flow channel. The upper die plate 1 is provided with an axle hole forming plug-in piece 5, the axle hole forming plug-in piece 5 comprises a boss sleeve 51 and an axle hole inserted bar 52, a mounting hole 511 which is matched with the axle hole inserted bar 52 in shape is arranged in the boss sleeve 51, and the axle hole inserted bar 52 is fixed in the mounting hole 511; when the die is assembled, the shaft hole insertion rod 52 penetrates through the die cavity 3, the outer wall of the shaft hole insertion rod 52 corresponds to the inner wall of a shaft hole of a motor end cover, a boss forming cavity 512 is arranged on one side, close to the lower die plate 2, of the boss sleeve 51, a first cooling water cavity 520 is arranged inside the shaft hole insertion rod 52, and a second cooling water cavity 510 is arranged in the boss sleeve 51; the cooling water cooling device further comprises a water pipeline 6, wherein the water pipeline 6 is arranged on the shaft hole forming insert 5, and the water pipeline 6 is communicated with the first cooling water cavity 520 and the second cooling water cavity 510.
The principle of the die for preventing the shrinkage cavity of the inner hole wall of the motor end cover casting in the embodiment is that the upper die plate 1 is additionally provided with the shaft hole forming insert 5, wherein the boss forming cavity 512 in the boss sleeve 51 is matched with the outer side shape of the boss 73 and used for wrapping the boss 73, the shaft hole insertion rod 52 is matched with the shaft hole 72 in shape and used for completing the forming of the shaft hole 72, the second cooling water cavity 510 and the first cooling water cavity 520 are arranged in the boss sleeve 51 and the shaft hole insertion rod 52 and penetrate through the water pipeline 6, so that the shaft hole 72 and the boss 73 can be locally cooled in the die-casting process, and due to the fact that the internal pressure of the cavities is stored in the die-casting process, the whole internal casting material has an outward expansion state, and the retraction condition of the shaft hole 72 and the boss 73 caused by local cooling can be almost ignored. Therefore, when the forming is completed and the motor end cover 7 is integrally retracted after the die is opened, the influence on the corresponding shaft hole 72 and the boss 73 is small. Therefore, the die for preventing the inner hole wall of the motor end cover casting from being die-cast and contracted can prevent the inner hole wall of the motor end cover from being die-cast and contracted.
In this embodiment, the shaft hole plunger 52 includes a plunger 521 and a plug 522, the first cooling water cavity 520 is disposed on the plunger 521, an upper end of the plunger 521 is open, and the plug 522 is in threaded connection with an inner wall of the open end of the plunger 521. The plug 522 is used for sealing the first cooling water cavity 520 in the inserting rod body 521, can adapt to disassembly and assembly, and is reasonable in structure.
The second cooling water cavity 510 is annular, and the second cooling water cavity 510 surrounds the outer side of the boss forming cavity 512. The uniformity and sufficiency of cooling can be ensured.
In addition, boss cover 51 still includes annular lid 513, annular lid 513 sets up in second cooling water chamber 510 upper end, be equipped with the fixed orifices 5131 of a set of circumference setting on annular lid 513, correspond fixed orifices 5131, be equipped with a set of connecting hole 514 on the boss cover 51. The annular cover 513 and the boss sleeve 51 can be fixed by penetrating the fixing hole 5131 and the connecting hole 514 through the connecting piece, and the 5 can be connected with the external push rod through the fixing hole 5131.
In this embodiment, the connection hole 514 is formed at the upper end of the wall shell of the boss 51 corresponding to the inner side of the second cooling water chamber 510. The whole compactness is good.
In this embodiment, an extension flange 5132 is disposed on an outer edge of an end surface of the annular cover 513, which is away from the second cooling water chamber 510, and corresponds to the extension flange 5132, a stepped ring surface 515, which is adapted to the shape of the fixing hole 5131, is disposed on the boss sleeve 51, and a first sealing ring 81 is disposed between the fixing hole 5131 and the stepped ring surface 515. And, one end near the second cooling water cavity 510 on the outer side of the annular cover 513 is sleeved with a second sealing ring 82, and the annular cover 513 is provided with a mounting ring groove 5133 corresponding to the second sealing ring 82. Two sealing rings are arranged, so that the sealing performance of the second cooling water cavity 510 can be ensured.
In this embodiment, the water pipeline 6 includes a water inlet pipe 61 and a water outlet pipe 62 which are symmetrically arranged, the water inlet pipe 61 and the water outlet pipe 62 are L-shaped as a whole, and include a cross pipe 601 and a longitudinally extending pipe 602 which are connected with each other, the cross pipe 601 penetrates from the side wall of the boss sleeve 51, and extends transversely until entering the first cooling water cavity 520; the longitudinally extending pipe 602 is arranged at one end of the transverse pipe 601 far away from the first cooling water cavity 520, the longitudinally extending pipe 602 is perpendicular to the transverse pipe 601, and one side of the longitudinally extending pipe 602 far away from the transverse pipe 601 extends out of the end face of the upper template 1; corresponding to the position of the second cooling water chamber 510, a through hole 6011 is provided on the side wall of the traverse pipe 601. Therefore, the whole circulating water channel is exquisite in design, compact in structure and good in cooling effect, and the cooling effect is improved to the maximum extent. In this embodiment, a pair of water passing grooves 5221 with downward openings are formed in the plug 522, and one ends of the pair of transverse pipes 601 far away from the longitudinally extending pipe 602 penetrate into the side wall of the plug 522 and enter the water passing grooves 5221.
In this embodiment, the upper mold plate 1 is provided with a moving groove 11 corresponding to a portion of the water passage pipe 6 extending outside the inside of the arbor hole-forming insert 5, and when the mold is opened and the arbor hole-forming insert 5 moves in the direction of the lower mold plate 2 with the molded article, the water passage pipe 6 can move in the moving groove 11 with the arbor hole-forming insert 5. In addition, a pair of chute inserts 12 are arranged in the moving groove 11, and the chute inserts 12 are arranged outside the longitudinally extending pipe 602 to ensure the stability of the water outlet pipe 62 during moving up and down.
In addition, a group of circumferentially arranged mounting hole forming rods 21 are further arranged on the lower template 2, and the group of mounting hole forming rods 21 penetrate through the cavity 3 until extending into the upper template 1; a group of thimble holes 22 are further arranged on the lower template 2 in a penetrating mode, and the thimble holes 22 extend into the lower end face of the cavity 3.
The use method of the die for preventing the shrinkage cavity of the die-casting inner hole wall of the motor end cover casting in the embodiment comprises the following steps:
s1, die assembly is carried out, the upper template 1 and the lower template 2 are respectively installed on a sheathing plate (not shown) of the die, a sprue bush is installed at the position corresponding to the sprue bush installation cavity 4, the upper template 1 and the lower template 2 are mutually attached, the upper end and the lower end of the shaft hole forming plug-in piece 5 are respectively flush with the end surfaces of the upper template 1 and the lower template 2, and a push rod (not shown) is externally connected to the upper end of the shaft hole forming plug-in piece 5;
s2, molding, namely injecting a metal casting material from the sprue bush, and flowing the metal casting material into the cavity 3 until the cavity 3 is filled;
s3, cooling shrinkage-proof holes, wherein cooling water is introduced into the first cooling water cavity 520 and the second cooling water cavity 510 from the water inlet pipe 61 respectively and then discharged from the water outlet pipe 62 to perform local cooling on the shaft hole and the boss of the motor cover;
s4, separating for the first time, wherein a push rod (not shown) externally connected with the shaft hole forming plug-in piece 5 pushes the shaft hole forming plug-in piece 5 to move downwards towards one side of the lower template 2, and at the moment, the formed piece and the lower template 2 integrally move downwards to complete the separation of the formed piece and the upper template 1;
s5, secondary separation, namely jacking the whole of the formed piece and the shaft hole forming insert 5 through a thimble arranged on the thimble hole 22 to complete the separation of the formed piece and the lower template 2;
and S6, discharging, wherein the shaft hole forming plug-in piece 5 moves upwards through a pushing rod (not shown) to reset, the group of mounting hole forming rods 21 move downwards until penetrating through the mounting holes of the formed pieces, and the formed pieces are taken out to finish discharging.
The foregoing describes the technical principles of the present invention in conjunction with specific embodiments, which are intended to illustrate the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a prevent mould of motor end cover foundry goods inner bore wall die-casting shrinkage cavity, includes cope match-plate pattern (1) and lower bolster (2), be equipped with die cavity (3) between cope match-plate pattern (1) and lower bolster (2), be equipped with runner cover installation cavity (4) on cope match-plate pattern (1) and lower bolster (2), runner cover installation cavity (4) are linked together its characterized in that through the runner with die cavity (3): the upper die plate (1) is provided with a shaft hole forming plug-in piece (5), the shaft hole forming plug-in piece (5) comprises a boss sleeve (51) and a shaft hole plug-in rod (52), a mounting hole (511) which is matched with the shaft hole plug-in rod (52) in shape is formed in the boss sleeve (51), and the shaft hole plug-in rod (52) is fixed in the mounting hole (511); when the die is assembled, the shaft hole inserted bar (52) penetrates through the die cavity (3), the outer wall of the shaft hole inserted bar (52) corresponds to the inner wall of a shaft hole of the motor end cover, a boss forming cavity (512) is arranged on one side, close to the lower die plate (2), of the boss sleeve (51), a first cooling water cavity (520) is arranged inside the shaft hole inserted bar (52), and a second cooling water cavity (510) is arranged inside the boss sleeve (51); the cooling water cooling device is characterized by further comprising a water pipeline (6), wherein the water pipeline (6) is arranged on the shaft hole forming insert (5), and the water pipeline (6) is communicated with the first cooling water cavity (520) and the second cooling water cavity (510).
2. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 1, wherein: the shaft hole inserted bar (52) comprises an inserted bar body (521) and a plug (522), the first cooling water cavity (520) is arranged on the inserted bar body (521), the upper end of the inserted bar body (521) is opened, and the plug (522) is in threaded connection with the inner wall of the opening end of the inserted bar body (521).
3. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 2, wherein: the second cooling water cavity (510) is annular in whole, and the second cooling water cavity (510) surrounds the outer side of the boss forming cavity (512).
4. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 3, wherein: boss cover (51) still include annular lid (513), annular lid (513) set up in second cooling water cavity (510) upper end, be equipped with fixed orifices (5131) that a set of circumference set up on annular lid (513), correspond fixed orifices (5131), be equipped with a set of connecting hole (514) on boss cover (51).
5. The die for preventing the shrinkage cavity of the inner hole wall of the motor end cover casting according to claim 4, wherein: the connecting hole (514) is arranged at the upper end of the wall shell, corresponding to the inner side of the second cooling water cavity (510), of the boss sleeve (51).
6. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 5, wherein: the outer fringe that second cooling water chamber (510) an terminal surface was kept away from in annular lid (513) is equipped with and extends flange (5132), corresponds and extends flange (5132), be equipped with step anchor ring (515) that suit with fixed orifices (5131) shape on boss cover (51), be equipped with first sealing ring (81) between fixed orifices (5131) and the step anchor ring (515).
7. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 6, wherein: nearly second cooling water chamber (510) one end on annular lid (513) lateral surface is equipped with second sealing ring (82) in the cover, corresponds second sealing ring (82) be equipped with installation annular (5133) on annular lid (513).
8. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 7, wherein: the water pipeline (6) comprises a water inlet pipe (61) and a water outlet pipe (62) which are symmetrically arranged, the water inlet pipe (61) and the water outlet pipe (62) are integrally L-shaped and comprise a cross pipe (601) and a longitudinal extension pipe (602) which are connected with each other, and the cross pipe (601) penetrates from the side wall of the boss sleeve (51) and transversely extends until entering the first cooling water cavity (520); the longitudinal extension pipe (602) is arranged at one end, far away from the first cooling water cavity (520), of the transverse pipe (601), the longitudinal extension pipe (602) is perpendicular to the transverse pipe (601), and one side, far away from the transverse pipe (601), of the longitudinal extension pipe (602) extends out of the end face of the upper template (1); and a through hole (6011) is formed in the side wall of the transverse pipe (601) corresponding to the position of the second cooling water cavity (510).
9. The die for preventing the shrinkage cavity of the die-casting of the inner hole wall of the motor end cover casting according to claim 8, wherein: corresponding to the part of the water pipeline (6) extending out of the outer side of the shaft hole forming plug-in (5), a moving groove (11) is formed in the upper die plate (1), and when the die is opened, the shaft hole forming plug-in (5) moves towards the direction of the lower die plate (2) along with the formed part, and the water pipeline (6) can move in the moving groove (11) along with the shaft hole forming plug-in (5).
10. The use method of the die for preventing the shrinkage cavity of the inner hole wall of the motor end cover casting is characterized in that: the lower template (2) is also provided with a group of circumferentially arranged mounting hole forming rods (21), and the group of mounting hole forming rods (21) penetrate through the cavity (3) until extending into the upper template (1); a group of thimble holes (22) are formed in the lower template (2) in a penetrating mode, and the thimble holes (22) extend into the lower end face of the cavity (3); the using method comprises the following steps:
s1, die assembly is carried out, the upper template (1) and the lower template (2) are respectively installed on a sheathing board of a die, a sprue bush is installed at a position corresponding to a sprue bush installation cavity (4), the upper template (1) and the lower template (2) are mutually attached, the upper end and the lower end of the shaft hole forming plug-in piece (5) are respectively flush with the end surfaces of the upper template (1) and the lower template (2), and a push rod is externally connected to the upper end of the shaft hole forming plug-in piece (5);
s2, molding, namely injecting a metal casting material from the sprue bush, and flowing the metal casting material into the cavity (3) until the inside of the cavity (3) is filled;
s3, shrinkage cavity prevention cooling, wherein cooling water is introduced into the first cooling water cavity (520) and the second cooling water cavity (510) from the water inlet pipe (61) respectively and then is discharged from the water outlet pipe (62) to perform local cooling on the shaft hole and the boss of the motor cover;
s4, primary separation, wherein a push rod externally connected with the shaft hole forming plug-in piece (5) pushes the shaft hole forming plug-in piece (5) to move downwards towards one side of the lower template (2), and at the moment, the formed piece and the lower template (2) integrally move downwards to complete the separation of the formed piece and the upper template (1);
s5, secondary separation, namely, jacking the whole of the formed piece and the shaft hole forming insert (5) through a thimble arranged on a thimble hole (22) to complete the separation of the formed piece and the lower template (2);
s6 and discharging, wherein the shaft hole forming plug-in (5) moves upwards through the push rod to reset, the group of mounting hole forming rods (21) move downwards until penetrating out of the mounting holes of the formed parts, the formed parts are taken out, and discharging is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210624335.5A CN114951591B (en) | 2022-06-02 | 2022-06-02 | Die for preventing inner hole wall of motor end cover casting from compression casting shrinkage cavity and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210624335.5A CN114951591B (en) | 2022-06-02 | 2022-06-02 | Die for preventing inner hole wall of motor end cover casting from compression casting shrinkage cavity and use method |
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| CN114951591A true CN114951591A (en) | 2022-08-30 |
| CN114951591B CN114951591B (en) | 2023-11-24 |
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| CN202210624335.5A Active CN114951591B (en) | 2022-06-02 | 2022-06-02 | Die for preventing inner hole wall of motor end cover casting from compression casting shrinkage cavity and use method |
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| CN215315605U (en) * | 2021-02-21 | 2021-12-28 | 绵阳市军豪科技开发有限公司 | Die casting die capable of safely exhausting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999047294A1 (en) * | 1998-03-18 | 1999-09-23 | Daewoo Electronics Co., Ltd. | Die casting apparatus for a rotor and method thereof |
| US20030228389A1 (en) * | 2002-04-17 | 2003-12-11 | Akira Itoh | Molding device |
| JP2004255430A (en) * | 2003-02-26 | 2004-09-16 | Aisin Seiki Co Ltd | Method and apparatus for casting piston for internal combustion engine |
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| CN215315605U (en) * | 2021-02-21 | 2021-12-28 | 绵阳市军豪科技开发有限公司 | Die casting die capable of safely exhausting |
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| Publication number | Publication date |
|---|---|
| CN114951591B (en) | 2023-11-24 |
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