CN217912799U - Die casting die without burr generation of burrs during die casting of porous workpiece - Google Patents

Abstract

The utility model discloses a die casting die that porous work piece does not have flash burr when die-casting, including preceding mold core and with the back mold core of preceding mold core compound die setting, lateral forming part has been installed to the lateral wall between preceding mold core and the back mold core, form the die cavity that is used for with porous work piece die-casting shaping between preceding mold core, back mold core and the lateral forming part, back mold core top is equipped with a plurality of and is used for the shaping mold insert of porous work piece's poroid structure die-casting, a plurality of embedding holes that correspond with shaping mold insert quantity are seted up to preceding mold core bottom, when the die cavity carries out die-casting shaping with porous work piece, shaping mold insert runs through in the die cavity, just shaping mold insert top inlays and establishes on embedding hole; the utility model discloses can not produce the burr of draped over one's shoulders cutting edge of a knife or a sword to porous work piece's poroid structure department, saved numerous and diverse and consuming time and power's follow-up technology processing step, the surface quality of porous work piece is good after once die-casting, has improved production efficiency and product percent of pass greatly.

Description

Die casting die without burr generation of burrs during die casting of porous workpiece

Technical Field

The utility model relates to a die casting die's technical field, in particular to do not have the die casting die that drapes over one's shoulders cutting edge of a knife or a sword burr and produce during porous work piece die-casting.

Background

The porous workpiece is generally made by die-casting with an existing die-casting mold. The rear die core of the die-casting die is provided with a plurality of forming ejector rods for die-casting the porous structure of the porous workpiece, the front die core and the rear die core are assembled in the die-casting process of the porous workpiece, and the forming ejector rods of the rear die core are in contact with the forming surface of the front die core. However, when the front mold core and the rear mold core are assembled, a certain assembly error exists, which causes a certain gap to exist between the molding ejector rod and the molding surface of the front mold core, and at the moment, the gap is communicated with the mold cavity. Finally, after the porous workpiece is subjected to die-casting molding by the die-casting mold, burrs are generated at the porous structure of the porous workpiece.

However, in order to improve the surface quality of the porous workpiece, the porous workpiece needs to be subjected to subsequent processing, and burrs of the porous structure need to be removed. However, the subsequent process treatment needs manual removal, the removal difficulty is high, the workload is extremely high, the working efficiency is low, and the product percent of pass is difficult to ensure.

Therefore, a die-casting die which can not generate burrs at the porous structure of the porous workpiece is urgently needed in the market.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a die casting die that porous workpiece did not have the cutting edge of a knife or a sword burr and produced when die casting die for solve prior art produces the problem of cutting edge of a knife or a sword burr in porous workpiece's porous structure department when carrying out the die casting to porous workpiece.

In order to realize the above purpose, the utility model provides a do not have die casting die that drapes over one's shoulders cutting edge of a knife or a sword burr and produce during porous work piece die-casting, including preceding mold core and with the back mold core of preceding mold core compound die setting, side direction shaping part has been installed to lateral wall between preceding mold core and the back mold core, form between preceding mold core, back mold core and the side direction shaping part and be used for the fashioned die cavity of porous work piece die-casting, back mold core top is equipped with a plurality of and is used for the shaping mold insert with porous work piece's pore structure die-casting, a plurality of and the corresponding embedding hole of shaping mold insert quantity have been seted up to preceding mold core bottom, work as when the die cavity carries out die-casting with porous work piece, the shaping mold insert runs through in the die cavity, just the shaping mold insert top is inlayed and is established on the embedding hole.

Preferably, the depth range of the embedding hole is 0.5-2 mm; the setting depth range of the embedding hole is 0.5-2 mm, so that the effect of no flash burrs generated during the die casting of the porous workpiece can be met, and the manufacturing cost can be saved.

Preferably, the range of the die drawing angle of the formed insert is 2-5 degrees; the range of the drawing angle is 2-5 degrees, so that the molded insert can be conveniently drawn out from the embedding hole, and the manufacturing cost can be saved.

Preferably, the top of the rear mold core is provided with a plurality of slag ladle grooves, and the mold cavity is communicated with the slag ladle grooves; the slag ladle grooves are beneficial to collecting low-temperature molten liquid or impurity-containing molten liquid which enters the die cavity in advance, improving the distribution of a temperature field in the die cavity, reducing the phenomena of casting flow marks, cold shut and insufficient pouring of the porous workpiece and finally improving the quality of the finished product of the porous workpiece.

Preferably, one end of the front mold core is provided with a sprue bush, and the mold cavity is communicated with the sprue bush; the sprue bushing is used to provide high temperature molten liquid to the mold cavity.

Preferably, the number of the lateral forming parts is four, and the four lateral forming parts are respectively a first lateral forming part, a second lateral forming part, a third lateral forming part and a fourth lateral forming part; the first lateral forming part, the second lateral forming part, the third lateral forming part and the fourth lateral forming part are used for die-casting the side wall of the porous workpiece together.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model is provided with a forming insert of a rear mold core and an embedding hole of a front mold core, after the front mold core and the rear mold core are assembled, the forming insert is embedded in the embedding hole, no fit clearance exists between the forming insert and the embedding hole, and the forming insert and the front mold core are assembled into a whole; when the die cavity carries out die-casting molding on the porous workpiece, the die cavity can mold a porous structure with good surface quality on the molding insert, and no burr is generated at the porous structure when the porous workpiece is die-cast.

2. The utility model provides a pair of die casting die that porous work piece die-casting time did not have and draped over one's shoulders cutting edge of a knife or a sword burr and produce when this die casting die is to porous work piece die-casting, can not produce to porous work piece's poroid structure department and draped over one's shoulders cutting edge of a knife or a sword burr, saved numerous and diverse and consuming time subsequent technology processing step of power, the surface quality of porous work piece is good after once die-casting, has improved production efficiency and product percent of pass greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an exploded structure of a die casting mold without burr generation during die casting of a porous workpiece according to the present invention;

FIG. 2 is a schematic structural view of the front mold core, the rear mold core, the lateral forming member and the sprue bush provided by the present invention;

fig. 3 is an exploded schematic view of the first, second, third and fourth lateral forming members provided in the present invention;

fig. 4 is a schematic structural view of the front mold core and the rear mold core after the mold is opened;

fig. 5 is a schematic front view of the bottom of the front mold core provided by the present invention;

fig. 6 is a schematic structural view of a prior art heat sink.

The figure comprises the following components:

1. a front mold core; 2. a rear mold core; 3. a lateral forming member; 31. a first lateral forming member; 310. a first lateral slider; 311. a first stud; 312. a first insert; 32. a second lateral forming member; 320. a second lateral slider; 321. a second stud; 33. a third lateral forming member; 330. a third lateral slider; 331. a third embedded column; 34. a fourth lateral molding member; 340. a fourth lateral slider; 341. a fourth stud; 4. forming the insert; 5. an insertion hole; 6. a slag ladle groove; 7. a sprue bush; 8. a front mold frame; 9. a rear mould frame; 91. a supporting seat; 92. mounting a plate; 99. a heat sink; 100. and (4) radiating holes.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present embodiment, and it is obvious that the described embodiment is an embodiment of the present invention, not all embodiments. Based on this embodiment in the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1 to 6, an embodiment of the present invention provides a die casting mold without burr generation during die casting of a porous workpiece, including a front mold frame 8, a rear mold frame 9, a front mold core 1, a rear mold core 2, and a lateral forming member 3. The rear mould frame 9 is arranged below the front mould frame 8 and is arranged opposite to the front mould frame 8, the front mould core 1 is embedded at the bottom of the front mould frame 8, the rear mould core 2 is embedded at the top of the rear mould frame 9, the front mould core 1 and the rear mould core 2 are arranged in a mould closing manner, the lateral forming part 3 is arranged on the side wall between the front mould core 1 and the rear mould core 2, a mould cavity for carrying out die-casting forming on the porous workpiece is formed among the front mould core 1, the rear mould core 2 and the lateral forming part 3, a plurality of forming inserts 4 for carrying out die-casting forming on the porous workpiece are arranged at the top of the mould core, the forming inserts 4 for carrying out die-casting forming on the porous workpiece are arranged at the bottom of the front mould core 1, a plurality of embedding holes 5 corresponding to the number of the forming inserts 4 are arranged at the bottom of the mould cavity, when the porous workpiece is subjected to die-casting forming by the mould cavity, the forming inserts 4 penetrate through the mould cavity, the top of the forming inserts 4 is embedded holes 5, at the time, no fit clearance exists between the forming inserts 4 and the forming inserts 5, the forming inserts 4 and the forming inserts 1 are assembled into a whole, and no burrs are generated at the hole-shaped structure with good surface quality.

The depth range of the insertion hole 5 is 0.5 to 2mm, wherein the depth range of the insertion hole 5 is designed to be 0.5 to 2 mm: if the embedding hole 5 is less than 0.5mm, the embedding hole 5 is too shallow and easily causes high-temperature molten liquid in the die cavity to enter the embedding hole 5 to cause flash burrs to be generated, if the embedding hole 5 is higher than 2mm, the precision of the forming insert 4 needs to be improved, the manufacturing difficulty and the cost of the forming insert 4 can be increased, therefore, the setting depth range of the embedding hole 5 is 0.5-2 mm, the effect of no flash burrs generated during die casting of a porous workpiece can be met, and the manufacturing cost can be saved.

The draft angle range of the molded insert 4 is 2-5 °, wherein the draft angle range of the molded insert 4 is 2-5 ° and the design purpose is as follows: if the draft angle of the molded insert 4 is less than 2 °, the molded insert 4 is not easily drawn out from the insert hole 5, and if the draft angle of the molded insert 4 is greater than 5 °, the assembling accuracy between the molded insert 4 and the insert hole 5 needs to be improved, which increases the manufacturing difficulty and cost of the molded insert 4 and the insert hole 5, so that the draft angle range of the molded insert 4 is 2 to 5 °, which is not only convenient for demolding the molded insert 4, but also saves the manufacturing cost.

A plurality of slag ladle grooves 6 are formed in the top of the rear mold core 2, the mold cavity is communicated with the slag ladle grooves 6, and the slag ladle grooves 6 are favorable for collecting low-temperature molten liquid or impurity-containing molten liquid which enters the mold cavity in advance, improving the distribution of a temperature field in the mold cavity and reducing the phenomena of casting flow marks, cold shut and insufficient pouring of porous workpieces. One end of the front mold core 1 is provided with a sprue bush 7, the mold cavity is communicated with the sprue bush 7, and the sprue bush 7 is used for providing high-temperature molten liquid for the mold cavity.

The number of the lateral forming members 3 is four, and the four lateral forming members 3 are a first lateral forming member 31, a second lateral forming member 32, a third lateral forming member 33 and a fourth lateral forming member 34, respectively. The first lateral forming member 31 is installed on the front side wall between the front mold core 1 and the rear mold core 2, the second lateral forming member 32 is installed on the rear side wall between the front mold core 1 and the rear mold core 2, the third lateral forming member 33 is installed on the left side wall between the front mold core 1 and the rear mold core 2, and the fourth lateral forming member 34 is installed on the right side wall between the front mold core 1 and the rear mold core 2. The first lateral forming member 31 includes a first lateral sliding block 310, a plurality of first inserts 312 mounted on the first lateral sliding block 310, and a plurality of first studs 311 mounted on the first lateral sliding block 310, the second lateral forming member 32 includes a second lateral sliding block 320 and a plurality of second studs 321 mounted on the second lateral sliding block 320, the third lateral forming member 33 includes a third lateral sliding block 330 and a plurality of third studs 331 mounted on the third lateral sliding block 330, and the fourth lateral forming member 34 includes a fourth lateral sliding block 340 and a plurality of fourth studs 341 mounted on the fourth lateral sliding block 340. The first lateral forming member 31, the second lateral forming member 32, the third lateral forming member 33 and the fourth lateral forming member 34 are used together for die-casting the sidewalls of the porous workpiece. Specifically, when the die cavity performs die-casting on the porous workpiece, the first lateral slide 310 of the first lateral forming part 31 is pushed to the front side wall between the front die core 1 and the rear die core 2, at this time, the first insert 312 is used for die-casting the appearance shape of the front side wall of the porous workpiece, and the first insert column 311 is used for forming Kong Yazhu of the front side wall of the porous workpiece; the second lateral slider 320 of the second lateral forming member 32 is pushed to the rear sidewall between the front core 1 and the rear core 2, and the second insert posts 321 are used for die-casting the holes of the rear sidewall of the porous workpiece; the third lateral slider 330 of the third lateral forming member 33 is pushed to the left sidewall between the front core 1 and the rear core 2, and the third studs 331 are used for die-casting the holes of the left sidewall of the porous workpiece; the fourth lateral slider 340 of the fourth lateral forming member 34 is pushed to the right sidewall between the front mold core 1 and the rear mold core 2, and the fourth insert column 341 is used for die-casting the hole of the right sidewall of the porous workpiece.

The bottom of the rear mould frame 9 is provided with a supporting seat 91, and the supporting seat 91 is connected with a mounting plate 92 for mounting a mould thimble in a sliding way.

Referring to fig. 6, the porous workpiece die-cast according to the present embodiment is a heat sink 99 for being mounted on a computer server, and the porous structure is a heat dissipation hole 100, and in recent years, the market has higher requirements for the surface quality of the heat sink 99, and therefore, the market has higher requirements for the surface quality of the heat dissipation hole 100. The utility model discloses a die casting die that porous workpiece did not have during die-casting and draped over one's shoulders cutting edge of a knife or a sword burr and produce, this die casting die can not throw over one's knife or a sword burr to 100 structure departments productions of louvre of fin 99 when die-casting, has saved numerous and diverse and consuming time subsequent process treatment step of power, and the surface quality of fin 99 is good after once die-casting, has improved the productivity effect greatly.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a die casting die that porous work piece die-casting time does not have flash burr and produces, includes preceding mold core (1) and with back mold core (2) that preceding mold core (1) compound die set up, side direction shaping part (3) have been installed to the lateral wall between preceding mold core (1) and back mold core (2), form between preceding mold core (1), back mold core (2) and side direction shaping part (3) and be used for the fashioned die cavity of porous work piece die-casting, its characterized in that, back mold core (2) top is equipped with a plurality of and is used for the fashioned shaping mold insert (4) of the pore structure die-casting of porous work piece, a plurality of and the corresponding embedding hole (5) of shaping mold insert (4) quantity are seted up to preceding mold core (1) bottom, work as when the die cavity carries out die-casting shaping with porous work piece, shaping mold insert (4) run through in the die cavity, just shaping mold insert (4) top is inlayed and is established on embedding hole (5).

2. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 1, wherein the depth range of the embedding hole (5) is 0.5-2 mm.

3. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 1, wherein the draft angle of the forming insert (4) is in the range of 2-5 °.

4. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 1, wherein the top of the rear die core (2) is provided with a plurality of slag ladle grooves (6), and the die cavity is communicated with the slag ladle grooves (6).

5. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 1, wherein a sprue bush (7) is arranged at one end of the front die core (1), and the die cavity is communicated with the sprue bush (7).

6. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 1, wherein the number of the lateral forming members (3) is four, and the four lateral forming members (3) are a first lateral forming member (31), a second lateral forming member (32), a third lateral forming member (33) and a fourth lateral forming member (34), respectively.

7. The die-casting die for die-casting the porous workpiece without burr generation as claimed in claim 6, wherein the first lateral forming member (31) is arranged on the front side wall between the front die core (1) and the rear die core (2), the second lateral forming member (32) is arranged on the rear side wall between the front die core (1) and the rear die core (2), the third lateral forming member (33) is arranged on the left side wall between the front die core (1) and the rear die core (2), and the fourth lateral forming member (34) is arranged on the right side wall between the front die core (1) and the rear die core (2).

8. The die-casting mold without burr generation during die-casting of the porous workpiece as claimed in claim 6, wherein the first lateral forming member (31) comprises a first lateral slider (310), a plurality of first inserts (312) mounted on the first lateral slider (310), and a plurality of first studs (311) mounted on the first lateral slider (310), the second lateral forming member (32) comprises a second lateral slider (320) and a plurality of second studs (321) mounted on the second lateral slider (320), the third lateral forming member (33) comprises a third lateral slider (330) and a plurality of third studs (331) mounted on the third lateral slider (330), and the fourth lateral forming member (34) comprises a fourth lateral slider (340) and a plurality of fourth studs (341) mounted on the fourth lateral slider (340).

9. The die-casting die without burrs of the flash during die-casting of the porous workpiece as claimed in claim 1, further comprising a front die frame (8) and a rear die frame (9) installed below the front die frame (8) and opposite to the front die frame (8), wherein the front die core (1) is embedded at the bottom of the front die frame (8), and the rear die core (2) is embedded at the top of the rear die frame (9).

10. The die-casting die without burrs generated during die-casting of the porous workpiece as claimed in claim 9, wherein a supporting seat (91) is installed at the bottom of the rear die frame (9), and the supporting seat (91) is slidably connected with a mounting plate (92) for mounting a thimble of the die.

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