CN115815565A - Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode - Google Patents
Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode Download PDFInfo
- Publication number
- CN115815565A CN115815565A CN202310011099.4A CN202310011099A CN115815565A CN 115815565 A CN115815565 A CN 115815565A CN 202310011099 A CN202310011099 A CN 202310011099A CN 115815565 A CN115815565 A CN 115815565A
- Authority
- CN
- China
- Prior art keywords
- die
- core
- sliding block
- sliding pin
- pulling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004512 die casting Methods 0.000 title claims abstract description 65
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 49
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000000670 limiting effect Effects 0.000 claims abstract description 64
- 230000009471 action Effects 0.000 claims abstract description 15
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000013011 mating Effects 0.000 description 4
- 238000013475 authorization Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a secondary core pulling mechanism of an aluminum die-casting die in an autonomous pre-core pulling mode, wherein a core pulling assembly comprises a locking seat, an auxiliary sliding pin, a spring and a main sliding block driven by a lateral oil cylinder; the main sliding block is provided with a sliding way which penetrates through the front and the back, and the auxiliary sliding pin is arranged in the sliding way; the locking seat is arranged on the fixed die assembly, and the main sliding block is arranged on the movable die assembly; the slideway is provided with a first limiting wall, and the auxiliary sliding pin is provided with a second limiting wall; the spring is sleeved outside the auxiliary sliding pin, the rear end of the spring is abutted against the second limiting wall, and the front end of the spring is abutted against the second limiting wall; when the die is closed, the locking seat is close to the rear side of the main sliding block so as to push the auxiliary sliding pin to advance and extend into the die-casting cavity, the spring is compressed by the first limiting wall and the second limiting wall, and the locking seat limits the auxiliary sliding pin to retreat; when the mold is opened, the locking seat is far away from the rear side of the main sliding block and independently relieves the limitation on the auxiliary sliding pin, the auxiliary sliding pin retreats under the action of a spring to complete the primary pre-core-pulling, and then the main sliding block retreats along a straight line under the drive of the lateral oil cylinder to complete the secondary core-pulling movement.
Description
Technical Field
The invention relates to an aluminum die-casting die, in particular to an aluminum die-casting die with a cavity formed by a movable die, a fixed die and a sliding block, and particularly relates to a secondary core-pulling mechanism of the aluminum die-casting die in an autonomous pre-core-pulling mode of the aluminum die-casting die.
Background
Aluminum die casting molds generally include a movable mold assembly including a movable mold core and a stationary mold assembly including a stationary mold core. When the movable mold assembly and the fixed mold assembly are assembled, the movable mold core and the fixed mold core form a molding space.
An aluminum die casting 100 as shown in fig. 1 includes a hole-like structure formed with a slider that protrudes into a molding space. Namely, the movable mold core, the fixed mold core and the slide block are enclosed together to form a molding cavity. How to realize the core pulling of the sliding block is always the content of the potential research of the technicians in the field.
An aluminum alloy die-casting die with an authorization notice number of CN107570681B comprises an upper die, a lower die and a top plate, wherein a transverse core-pulling sliding block is arranged on the lower die, an outer molding surface of a die core of the lower die is composed of a first molding surface and a second molding surface, a shrinkage cavity is formed in the position of the second molding surface of the die core, a compression rod associated with a driving oil cylinder is arranged in the shrinkage cavity, the driving oil cylinder can enable the compression rod to axially move to the shrinkage cavity from the molding position, a spray hole is formed in the position, corresponding to the transverse core-pulling sliding block, of the lower die, and a plunger type spraying device is arranged in the spray hole. The invention can effectively improve the problems of shrinkage depression and shrinkage hole, can realize automatic spraying of the die-casting release agent, and is beneficial to demolding of the transverse core-pulling sliding block.
The pressure casting die for the aluminum pressure casting part with the middle hole has an authorization notice number CN113976854B, and comprises a movable die assembly, a fixed die assembly and an inner core assembly; the inner core assembly comprises an inner drawing piece positioned in the center and an inner sliding block assembly surrounding the periphery of the inner drawing piece, and the inner sliding block assembly comprises at least two groups of first inner sliding blocks and second inner sliding blocks which are laterally matched and can move in the radial direction; the included angle between the inner wall of the first inner slide block and the axis of the inner drawing piece is larger than the included angle between the inner wall of the second inner slide block and the axis of the inner drawing piece; the side walls of the first inner slide block and the second inner slide block are matched through a radial inclined plane structure. Therefore, the inner core assembly is unfolded and reduced by utilizing the inclined plane matching, and the demoulding is facilitated.
The scheme is directed at the one-time core pulling technology of the sliding block, but the one-time core pulling technology is not suitable due to the specificity of the local structure of some aluminum die castings.
Specifically, as shown in fig. 1, an aluminum die casting 100 includes a main body 101 and an attachment 102 on a side of the main body, both of the main body and the attachment have a hole structure, and the main body and the attachment are connected by a thin connecting wall, and the area is weak in structural strength. If the slider is used for pulling the core at one time, the hole walls of the hole structures at the two positions have larger wrapping force on the slider, so that the part is easy to break, the product percent of pass is influenced, and serious economic loss is caused.
Disclosure of Invention
Based on the problems in the prior art, the invention provides a secondary core-pulling mechanism of an aluminum die-casting die in an autonomous pre-core-pulling mode. Through setting up the structure of loosing core in advance, independently accomplish elasticity when cover half subassembly and movable mould subassembly die sinking and loose core in advance for the local that is located the weak part region of intensity is loosed core earlier, then looses core through the cylinder drive whole again. Therefore, the reliability and the stability of the integral core pulling are improved, the product is prevented from being pulled and broken, and a driving mechanism is not additionally arranged.
The technical scheme adopted by the invention for solving the technical problems is as follows: the secondary core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode comprises a movable die assembly, a fixed die assembly and a core-pulling assembly, wherein the movable die assembly, the fixed die assembly and the core-pulling assembly are matched to form a die-casting cavity of the die-casting;
the core pulling assembly comprises a locking seat, an auxiliary sliding pin, a spring and a main sliding block driven by a lateral oil cylinder;
the main sliding block is provided with a sliding way which penetrates through the main sliding block from front to back, and the auxiliary sliding pin is arranged in the sliding way;
the locking seat is arranged on the fixed die assembly, and the main sliding block is arranged on the movable die assembly;
the slideway is provided with a first limiting wall, and the auxiliary sliding pin is provided with a second limiting wall;
the spring is sleeved outside the auxiliary sliding pin, the rear end of the spring is abutted against the second limiting wall, and the front end of the spring is abutted against the first limiting wall;
when the die is closed, the locking seat is close to the rear side of the main sliding block so as to push the auxiliary sliding pin to advance and extend into a die-casting cavity, the spring is compressed by the first limiting wall and the second limiting wall, and the locking seat limits the auxiliary sliding pin to retreat;
when the mold is opened, the locking seat is far away from the rear side of the main sliding block and independently relieves the limitation on the auxiliary sliding pin, the auxiliary sliding pin retreats under the action of a spring to complete primary pre-core-pulling, and then the main sliding block retreats linearly under the drive of the lateral oil cylinder to complete secondary core-pulling movement.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the rear wall of the auxiliary sliding pin sequentially comprises a first inclined plane and a second inclined plane from one side close to the fixed die assembly;
the slope of the first inclined plane is K1, the slope of the second inclined plane is K2, and K1 is smaller than K2;
the front wall of the locking seat is a third inclined surface matched with the second inclined surface.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: when the die is closed, the locking seat abuts against the rear wall of the main sliding block; when the mold is opened, the locking seat is far away from the rear wall of the main sliding block.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the rear wall of the main sliding block comprises a matching surface matched with the locking seat, and the matching surface is a fourth inclined surface with the slope of K2;
when the die is closed, the first inclined surface enters the slideway, and the second inclined surface is flush with the fourth inclined surface;
during die sinking, the second inclined plane stretches out outside the slide, the edge that first inclined plane is close to the cover half subassembly is no longer than the fourth inclined plane.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the auxiliary sliding pin comprises a primary annular limiting bulge, and the slideway is correspondingly provided with a primary annular groove matched with the primary annular limiting bulge;
the spring is located the spacing protruding front side of one-level annular and is located one-level annular groove, the spacing bellied antetheca of one-level annular forms the spacing wall of second, the antetheca of one-level annular groove forms first spacing wall.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the auxiliary sliding pin also comprises a secondary annular limiting bulge in a step shape with the primary annular limiting bulge, and the secondary annular limiting bulge is positioned on the rear side of the primary annular limiting bulge;
the diameter of the first-stage annular limiting bulge is larger than that of the second-stage annular limiting bulge, and a second-stage annular groove matched with the second-stage annular limiting bulge is formed in the rear side of the first-stage annular groove of the slide way;
the front wall and the rear wall of the secondary annular groove respectively limit the front wall and the rear wall of the secondary annular limiting protrusion, so that the limiting movement of the secondary sliding pin in the sliding way is limited.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the rear wall of the auxiliary sliding pin also comprises an acting surface matched with a connector at the output end of the lateral oil cylinder;
the matching surface is positioned at one side close to the fixed die assembly, and the acting surface is positioned at one side close to the movable die assembly;
the matching surface is positioned on the front side of the action surface, and the matching surface and the action surface are distributed in a staggered manner so that the rear wall of the auxiliary sliding pin is in a step shape.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the front end of the auxiliary sliding pin extends into a core print of the die cavity of the die casting to form a conical shape with the diameter gradually reduced from front to back.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the main sliding block comprises a base at the rear side and a sliding block body at the front side, the base is connected with the movable mould assembly, the front section of the sliding block body is a profiling body extending into the die cavity, and the rear section of the sliding block body is provided with a flash channel.
The preferred technical scheme adopted by the invention for solving the technical problems is as follows: and a guide sleeve is arranged between the second-stage annular limiting bulge and the second-stage annular groove.
Compared with the prior art, the invention has the advantages that through the matching of the locking seat and the auxiliary sliding pin and the arrangement of the spring, the elastic pre-core-pulling which is automatically completed when the fixed die assembly and the movable die assembly are opened is realized, the acting force on the aluminum die casting during the secondary core-pulling is reduced, the core-pulling is easier to realize, the phenomenon of clamping a sliding block is difficult to occur, the core-pulling process is more stable and reliable, the weak part can be prevented from being torn off, and the quality of a product is ensured. And because the pre-core-pulling and die-opening of the auxiliary sliding pin are carried out synchronously and a driving mechanism is not required to be additionally arranged, the energy consumption is not increased, the time of a die-casting period is not increased, and the actual production is facilitated.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an aluminum die casting according to the background art and the embodiment of the invention;
FIG. 2 is a schematic view of an aluminum die casting in a movable mold core according to the background art and embodiments of the present invention;
FIG. 3 is a first exploded view of an aluminum die casting mold in accordance with a preferred embodiment of the present invention;
FIG. 4 is a second exploded view of the aluminum die casting mold in accordance with a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram I of a secondary core-pulling mechanism of an aluminum die-casting die in an autonomous pre-core-pulling mode;
FIG. 6 is a schematic diagram II of a secondary core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode;
FIG. 7 is a schematic diagram I of a part of a secondary core-pulling mechanism of an aluminum die-casting die in an autonomous pre-core-pulling mode;
FIG. 8 is a second schematic diagram of a part of a secondary core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode;
FIG. 9 is an exploded view of a portion of a secondary core-pulling mechanism of an aluminum die-casting mold in an autonomous pre-core-pulling mode;
FIG. 10 is an exploded view of a portion of a secondary core-pulling mechanism of an aluminum die-casting mold in an autonomous pre-core-pulling mode;
FIG. 11 is a partial cross-sectional view of a secondary core-pulling mechanism of an aluminum die-casting mold in an autonomous pre-core-pulling mode;
fig. 12 is a schematic view of the engagement positions of the locking seat, the slider and the slide pin.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed", "connected", and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides an aluminum die-casting die, and particularly provides a secondary core-pulling mechanism of the aluminum die-casting die in an autonomous pre-core-pulling mode on the die. It is mainly directed to an aluminum die cast part 100 of the type shown in fig. 1-2, but is also applicable to other die cast cavity structures that require intervention in the main slider 10. The main slider 10 and the auxiliary sliding pin 20 jointly form a complete slider, wherein the auxiliary sliding pin 20 independently completes the elastic pre-core-pulling and the separation from the aluminum die casting 100 while the fixed die assembly 300 and the movable die assembly 200 are opened, and then the main slider 10 performs secondary core-pulling and the separation from the aluminum die casting 100 through a traditional core-pulling mode.
Specifically, as shown in fig. 3 to 4, the secondary core pulling mechanism of the aluminum die-casting mold in the autonomous pre-core pulling mode comprises a movable mold assembly 200, a fixed mold assembly 300 and a core pulling assembly 400, wherein the movable mold assembly 200, the fixed mold assembly 300 and the core pulling assembly 400 are matched to form a die-casting cavity of a die-casting part.
As shown in fig. 5 to 11, the core pulling assembly 400 includes a locking seat 30, an auxiliary sliding pin 20, a spring 40 and a main slider 10 driven by a lateral oil cylinder 50, the main slider 10 is provided with a slide S penetrating front and back, and the auxiliary sliding pin 20 is arranged in the slide S; the locking seat 30 is arranged on the fixed die assembly 300, and the main slide block 10 is arranged on the movable die assembly 200; the slide way S is provided with a first limit wall z1, and the auxiliary sliding pin 20 is provided with a second limit wall z2; the spring 40 is sleeved outside the auxiliary sliding pin 20, and the rear end of the spring abuts against the second limiting wall z2 and the front end of the spring abuts against the second limiting wall z 2.
When the mold is closed, the locking seat 30 is close to the rear side of the main slide block 10 to push the auxiliary slide pin 20 to advance and extend into the die cavity, the spring 40 is compressed by the first limiting wall z1 and the second limiting wall z2, and the locking seat 30 limits the auxiliary slide pin 20 to retreat. When the mold is opened, the locking seat 30 is far away from the rear side of the main sliding block 10, the limitation on the auxiliary sliding pin 20 is automatically released, the auxiliary sliding pin 20 retreats under the action of the spring 40 to complete the primary pre-core-pulling, and then the main sliding block 10 retreats linearly under the drive of the lateral oil cylinder to complete the secondary core-pulling movement.
It can be seen that the core pulling power of the secondary slide pin 20 comes from the deformation of the spring 40, so that the secondary core pulling does not increase the energy consumption of the whole mold. And the driving of the deformation of the spring 40 causes the core pulling force to be small, so that the surface of the formed aluminum die casting 100 is not easy to be damaged due to the overlarge core pulling force. These are some of the advantages of using the spring 40 to drive the pre-core.
More importantly, in this embodiment, as shown in fig. 4, the locking socket 30 is provided on the fixed mold assembly 300, the main slide 10 is provided on the movable mold assembly 200, and the spring 40 and the sub slide pin 20 are provided inside the main slide 10. Therefore, when the mold is opened, the main slider 10 and the lock seat 30 are automatically separated along with the opening of the mold, so that the lock seat 30 contacts the restriction of the backward movement of the sub slide pin 20, and the sub slide pin 20 can be automatically retreated under the driving of the spring 40. It can be seen that the core pulling of the secondary slide pin 20 is an elastic pre-core pulling which is automatically completed when the fixed die assembly 300 and the movable die assembly 200 are opened. Therefore, the pre-core pulling process does not increase the time length of the die casting period.
Because the setting of loosing core in advance for follow-up second grade when loosing core, the area of contact of slider and fashioned aluminium die casting 100 diminishes, and this acting force of slider and aluminium die casting 100 when having just reduced the second grade and loosing core consequently realizes loosing core more easily, is difficult to appear the phenomenon that the slider blocked, and the process of loosing core is more reliable and more stable, and the qualification rate of product is higher, and the efficiency of loosing core is better.
The secondary core-pulling mechanism of the aluminum die-casting mold in the autonomous pre-core-pulling mode provided by the embodiment is particularly suitable for the aluminum die-casting part 100 shown in fig. 1-2. The aluminum die casting 100 comprises a main body 101 and two accessories 102 respectively positioned at two sides of the main body 101, wherein the main body 101 and the accessories 102 are connected through a thin connecting wall 103, and the structural strength of the area is weak. Wherein the body 101 is provided with a first hole configuration p1, the first appendage 102a is provided with a second hole configuration p2 and the second appendage 102b is provided with a third hole configuration p3. The first accessory 102a is formed on a fixed mold core of the fixed mold assembly 300, and the second accessory 102b is formed on a movable mold core of the movable mold assembly 200, which are respectively positioned at two sides of a parting surface of the fixed mold core and the movable mold core. When the fixed mold assembly 300 and the movable mold assembly 200 are opened, the second appendage 102b remains at the movable mold core and the first appendage 102a loses support. Therefore, when the core pulling is performed again and the slider member in the three hole structure is removed at the same time, the first connecting wall 103a between the main body 101 and the first appendage 102a is very easily broken.
With the technical solution of the present embodiment, the secondary slide pin 20 is used to mold the second hole structure p2 corresponding to the first attachment 102 a. The hole configuration of the main body 101 and the second appendage 102b is formed by the main slider 10. When the mold is opened, the secondary slide pin 20 automatically pre-pulls the core, so that the constraint on the first accessory 102a is removed, and when the main slider 10 pulls the core, no action force is exerted on the first connecting wall 103a between the main body 101 and the first accessory 102a, so that the first connecting wall 103a is prevented from being torn off, and the quality of the product is ensured. Of course, the second attachment 102b may also be provided with a pre-pulling structure.
In the present embodiment, the locking seat 30 is used to limit the backward movement of the secondary slide pin 20, so that the secondary slide pin 20 can be locked during the molding process, and the secondary slide pin 20 is prevented from moving backward. Meanwhile, when the secondary slide pin 20 is in a retracted state, the locking base 30 can push the secondary slide pin 20 forward through a mold closing process. This is accomplished by the engagement of the front wall of the lock seat 30 and the rear wall of the secondary slide pin 20. Preferably, the lock seat 30 is formed from a wear resistant material and hardened.
As shown in fig. 10 to 12, specifically, the rear wall of the sub slide pin 20 includes a first inclined surface m1 and a second inclined surface m2 in order from the side close to the stationary mold assembly 300; the slope of the first inclined plane m1 is K1, the slope of the second inclined plane m2 is K2, and K1 is smaller than K2; the front wall of the locking seat 30 is a third slope m3 matching the second slope m 2. The second slope m2 and the third slope m3 have the same inclination direction and inclination angle, and can be butted by sliding in the inclination direction relatively.
It should be noted that even if the rear wall of the secondary slide pin 20 is provided with only the second slope m2, the engagement of the lock seat 30 with the secondary slide pin 20 can be accomplished by the engagement of the second slope m2 with the third slope m3. The first slope m1 with a smaller slope is provided to form a guide surface, which is more favorable for the fit between the secondary slide pin 20 and the lock seat 30, and avoids the difficulty in inserting the fit lock seat 30 behind the secondary slide pin 20 due to insufficient precision. Of course, the locking seat is also provided with a notch m5 adjacent to the third inclined surface m3 at the side close to the movable mold assembly.
Of course, the arrangement of the first inclined surface m1 also provides the possibility that the locking seat 30 can be tightly attached to the rear wall of the main slider 10. In this embodiment, the rear wall of the main slider 10 includes a mating surface m4 that mates with the locking seat 30, and the mating surface m4 is a fourth slope m4 with a slope K2; when the die is closed, the first inclined plane m1 enters the slide S, and the second inclined plane m2 is flush with the fourth inclined plane m4; when the die is opened, the second inclined plane m2 extends out of the slide way S, and the edge of the first inclined plane m1 close to the fixed die assembly 300 does not exceed the fourth inclined plane m4. When the mold is closed, the locking seat 30 abuts against the rear wall of the main slide block 10; when the mold is opened, the locking seat 30 is far away from the rear wall of the main slider 10. The locking seat 30 and the rear wall of the main slide 10 are deadened so that the state between the parts in the clamped state is more stable.
Preferably, in this embodiment, the movable stroke of the secondary slide pin 20 is 2mm, that is, the distance difference between the two edges of the first inclined surface m1 in the length direction of the secondary slide pin 20 is 2mm.
As shown in fig. 7, 9 and 11, the rear wall of the secondary slide pin 20 further includes an action surface n matching with the connecting head u of the output end of the lateral cylinder; the matching surface m4 is positioned at one side close to the fixed die assembly 300, and the acting surface n is positioned at one side close to the movable die assembly 200; the mating surface m4 is located on the front side of the action surface, and the mating surface m4 and the action surface are distributed in a staggered manner so that the rear wall of the secondary slide pin 20 is stepped. So that the driving of the main slider 10 by the lateral cylinder and the action of the locking seat 30 on the secondary slide pin 20 are not interfered with each other. And the action point of the lateral oil cylinder is closer to one side of the movable mold core, so that the stability of the core pulling process is better facilitated.
Preferably, as shown in fig. 10-11, the secondary slide pin 20 includes a primary annular limiting protrusion 1, and the slide S is correspondingly provided with a primary annular groove 2 matching with the primary annular limiting protrusion 1; the spring 40 is located the spacing protruding 1 front side of one-level annular and is located one-level annular groove 2, and the spacing protruding 1 antetheca of one-level annular forms second spacing wall z2, and the antetheca of one-level annular groove 2 forms first spacing wall z1.
Furthermore, the auxiliary sliding pin 20 further comprises a secondary annular limiting protrusion 3 which is step-shaped with the primary annular limiting protrusion 1, and the secondary annular limiting protrusion 3 is positioned at the rear side of the primary annular limiting protrusion 1; the diameter of the first-stage annular limiting bulge 1 is larger than that of the second-stage annular limiting bulge 3, and a second-stage annular groove 4 matched with the second-stage annular limiting bulge 3 is formed in the rear side of the first-stage annular groove 2 of the slide S; the front wall and the rear wall of the secondary annular groove 4 respectively limit the front wall and the rear wall of the secondary annular limiting protrusion 3 so as to limit the amplitude limiting activity of the secondary slide pin 20 in the slide S.
When the die is opened, the auxiliary sliding pin 20 moves backwards under the action of the spring 40 until the rear wall of the secondary annular limiting protrusion 3 contacts the rear inner wall of the secondary annular groove 4, so that rear limiting is formed, the auxiliary sliding pin 20 is limited from further moving backwards, the auxiliary sliding pin 20 can be accurately matched with the locking seat 30 to move forwards in the die closing process, and meanwhile, the auxiliary sliding pin 20 is prevented from being separated from the slide S. When the die is closed, the auxiliary sliding pin 20 is pushed forwards by the locking seat 30 until the front wall of the secondary annular limiting protrusion 3 contacts the front inner wall of the secondary annular groove 4, so that a front limit is formed, the auxiliary sliding pin 20 is limited from further moving forwards, and only the core print 5 at the front end of the auxiliary sliding pin 20 is ensured to extend into a die-casting cavity.
As shown in fig. 10 to 11, in order to ensure the smoothness of the sliding of the secondary slide pin 20, a guide sleeve T is arranged between the secondary annular limiting protrusion 3 and the secondary annular groove 4. In order to facilitate demoulding and core pulling, the front end of the auxiliary sliding pin 20 extends into the core print 5 of the die cavity of the die casting to form a conical shape with the diameter gradually reduced from front to back.
As shown in fig. 8-11, the main slider 10 includes a base 11 at the rear side and a slider body 12 at the front side, the base 11 is connected with the movable mold assembly 200, the front section of the slider body 12 is a profile f extending into the die cavity, and the rear section of the slider body 12 is provided with an overflow channel y. Of course, for a specific product as shown in fig. 1, a pin g moving with the slider body 12 corresponding to the third hole structure p3 may be further inserted into the slider body 12.
As shown in fig. 5 to 7, the main slide 10 and the side cylinder 50 are provided on the movable die plate of the movable die assembly 200 through the slide holder 60. The slider bracket 60 is also provided with lateral beads 70 to provide lateral support and fore and aft guidance against the sides of the base. A filler strip 80 is provided between the base 11 of the main slider 10 and the slider bracket 60 to support the main slider 10 and to avoid influence on the sliding of the main slider 10.
The two-stage core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode provided by the invention is described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the above embodiments is only used for helping to understand the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. Independently loose core mechanism of loosing core two-stage of aluminium die casting die under mode in advance, including movable mould subassembly, cover half subassembly and the subassembly of loosing core, the movable mould subassembly the cover half subassembly and the subassembly cooperation of loosing core constitutes the die casting die cavity of die casting, its characterized in that:
the core pulling assembly comprises a locking seat, an auxiliary sliding pin, a spring and a main sliding block driven by a lateral oil cylinder;
the main sliding block is provided with a sliding way which penetrates through the main sliding block from front to back, and the auxiliary sliding pin is arranged in the sliding way;
the locking seat is arranged on the fixed die assembly, and the main sliding block is arranged on the movable die assembly;
the slideway is provided with a first limiting wall, and the auxiliary sliding pin is provided with a second limiting wall;
the spring is sleeved outside the auxiliary sliding pin, the rear end of the spring is abutted against the second limiting wall, and the front end of the spring is abutted against the first limiting wall;
when the die is closed, the locking seat is close to the rear side of the main sliding block so as to push the auxiliary sliding pin to advance and extend into a die-casting cavity, the spring is compressed by the first limiting wall and the second limiting wall, and the locking seat limits the auxiliary sliding pin to retreat;
when the mold is opened, the locking seat is far away from the rear side of the main sliding block and independently relieves the limitation on the auxiliary sliding pin, the auxiliary sliding pin retreats under the action of a spring to complete primary pre-core-pulling, and then the main sliding block retreats linearly under the drive of the lateral oil cylinder to complete secondary core-pulling movement.
2. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 1, characterized in that:
the rear wall of the auxiliary sliding pin sequentially comprises a first inclined plane and a second inclined plane from one side close to the fixed die assembly;
the slope of the first inclined plane is K1, the slope of the second inclined plane is K2, and K1 is smaller than K2;
the front wall of the locking seat is a third inclined surface matched with the second inclined surface.
3. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 1, characterized in that:
when the die is closed, the locking seat abuts against the rear wall of the main sliding block; when the mold is opened, the locking seat is far away from the rear wall of the main sliding block.
4. The aluminum die-casting die secondary core-pulling mechanism under the autonomous pre-core-pulling mode according to claim 2, characterized in that:
the rear wall of the main sliding block comprises a matching surface matched with the locking seat, and the matching surface is a fourth inclined surface with the slope of K2;
when the die is closed, the first inclined surface enters the slideway, and the second inclined surface is flush with the fourth inclined surface;
during die sinking, the second inclined plane stretches out outside the slide, the edge that first inclined plane is close to the cover half subassembly is no longer than the fourth inclined plane.
5. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 1, characterized in that:
the auxiliary sliding pin comprises a primary annular limiting bulge, and the slideway is correspondingly provided with a primary annular groove matched with the primary annular limiting bulge;
the spring is located the spacing protruding front side of one-level annular and is located one-level annular groove, the spacing bellied antetheca of one-level annular forms the spacing wall of second, the antetheca of one-level annular groove forms first spacing wall.
6. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 5, characterized in that:
the auxiliary sliding pin also comprises a secondary annular limiting bulge in a step shape with the primary annular limiting bulge, and the secondary annular limiting bulge is positioned on the rear side of the primary annular limiting bulge;
the diameter of the first-stage annular limiting bulge is larger than that of the second-stage annular limiting bulge, and a second-stage annular groove matched with the second-stage annular limiting bulge is formed in the rear side of the first-stage annular groove of the slide way;
the front wall and the rear wall of the secondary annular groove respectively limit the front wall and the rear wall of the secondary annular limiting protrusion, so that the limiting movement of the secondary sliding pin in the slideway is limited.
7. The secondary core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode according to claim 4, characterized in that:
the rear wall of the auxiliary sliding pin also comprises an acting surface matched with a connector at the output end of the lateral oil cylinder;
the matching surface is positioned at one side close to the fixed die assembly, and the acting surface is positioned at one side close to the movable die assembly;
the matching surface is positioned on the front side of the action surface, and the matching surface and the action surface are distributed in a staggered manner so that the rear wall of the auxiliary sliding pin is in a step shape.
8. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 1, characterized in that:
the front end of the auxiliary sliding pin extends into a core print of the die cavity of the die casting to form a conical shape with the diameter gradually reduced from front to back.
9. The aluminum die casting mold secondary core pulling mechanism under the autonomous pre-core pulling mode according to claim 1, characterized in that:
the main sliding block comprises a base at the rear side and a sliding block body at the front side, the base is connected with the movable die assembly, the front section of the sliding block body is a profiling body extending into the die-casting cavity, and the rear section of the sliding block body is provided with an overflow channel.
10. The secondary core-pulling mechanism of the aluminum die-casting die in the autonomous pre-core-pulling mode according to claim 6, characterized in that:
and a guide sleeve is arranged between the second-stage annular limiting bulge and the second-stage annular groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011099.4A CN115815565A (en) | 2023-01-05 | 2023-01-05 | Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode |
| CN202321287858.1U CN220717739U (en) | 2023-01-05 | 2023-05-25 | Secondary core-pulling mechanism of aluminum die casting die in autonomous pre-core-pulling mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011099.4A CN115815565A (en) | 2023-01-05 | 2023-01-05 | Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115815565A true CN115815565A (en) | 2023-03-21 |
Family
ID=85520129
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310011099.4A Pending CN115815565A (en) | 2023-01-05 | 2023-01-05 | Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode |
| CN202321287858.1U Active CN220717739U (en) | 2023-01-05 | 2023-05-25 | Secondary core-pulling mechanism of aluminum die casting die in autonomous pre-core-pulling mode |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321287858.1U Active CN220717739U (en) | 2023-01-05 | 2023-05-25 | Secondary core-pulling mechanism of aluminum die casting die in autonomous pre-core-pulling mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN115815565A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0890610A (en) * | 1994-09-29 | 1996-04-09 | Mitsubishi Materials Corp | Mold device for molding case member |
| CN207288841U (en) * | 2017-08-17 | 2018-05-01 | 广东鸿泰科技股份有限公司 | A kind of pre- drawing mechanism of die casting core pulling |
| CN110238365A (en) * | 2019-07-26 | 2019-09-17 | 爱柯迪股份有限公司 | The core-pulling mechanism and compression mod of through-hole die casting and the application method of compression mod |
| CN113145826A (en) * | 2021-05-06 | 2021-07-23 | 宁波臻至机械制造有限公司 | Core-pulling system and core-pulling method of die-casting die |
| CN217370394U (en) * | 2021-12-24 | 2022-09-06 | 苏州市艺达精工有限公司 | Die casting die's slider secondary structure of loosing core |
-
2023
- 2023-01-05 CN CN202310011099.4A patent/CN115815565A/en active Pending
- 2023-05-25 CN CN202321287858.1U patent/CN220717739U/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0890610A (en) * | 1994-09-29 | 1996-04-09 | Mitsubishi Materials Corp | Mold device for molding case member |
| CN207288841U (en) * | 2017-08-17 | 2018-05-01 | 广东鸿泰科技股份有限公司 | A kind of pre- drawing mechanism of die casting core pulling |
| CN110238365A (en) * | 2019-07-26 | 2019-09-17 | 爱柯迪股份有限公司 | The core-pulling mechanism and compression mod of through-hole die casting and the application method of compression mod |
| CN113145826A (en) * | 2021-05-06 | 2021-07-23 | 宁波臻至机械制造有限公司 | Core-pulling system and core-pulling method of die-casting die |
| CN217370394U (en) * | 2021-12-24 | 2022-09-06 | 苏州市艺达精工有限公司 | Die casting die's slider secondary structure of loosing core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN220717739U (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209350817U (en) | Core pulling ramp-roof structure and injection mold | |
| CN111645276B (en) | Secondary core-pulling anti-sticking structure for oil cylinder slider product | |
| CN113103524A (en) | Inside oblique top of injection mold takes off back-off mechanism | |
| CN115815565A (en) | Secondary core-pulling mechanism of aluminum die-casting die in autonomous pre-core-pulling mode | |
| CN116001213B (en) | Mould | |
| CN216465953U (en) | Secondary core-pulling mechanism for inverted plastic part | |
| CN217993315U (en) | Two-way ejecting injection mold of backrest | |
| CN216804273U (en) | Injection mold with rear mold core first-pulling and secondary-pulling mechanism | |
| CN210047016U (en) | Tertiary line position demolding structure of injection mold | |
| CN212329608U (en) | Polisher head shell die casting die | |
| CN212094281U (en) | Sliding block core-pulling mechanism in die-casting die | |
| CN218192481U (en) | Die-casting part forming die | |
| CN111571944B (en) | Die structure for product exchange at pipe orifice | |
| CN219903170U (en) | Structure for extending ejection stroke of oil cylinder row position | |
| CN213224246U (en) | Mould wedging mechanism | |
| JP2000102953A (en) | Die for injection molding | |
| CN114393789B (en) | Injection mold with back mold core first-drawing secondary core-pulling mechanism and demolding method | |
| CN211165127U (en) | Lateral auxiliary sliding block demoulding mechanism for side wall of automobile bumper | |
| CN221112700U (en) | Triple mold locking mechanism of injection mold of automobile glove compartment | |
| CN220052746U (en) | Delayed ejection mechanism of inclined ejection | |
| CN215791380U (en) | Electric motor car storage battery injection mold | |
| CN216782484U (en) | Deep groove forming mechanism for side surface of plastic part | |
| CN209937567U (en) | Internal drawing and locking mold reinforcing mechanism for double-color face mask of headlamp | |
| CN218015716U (en) | Oil cylinder core-pulling device for front die of die-casting die | |
| CN214395189U (en) | Mechanical front mold ejection mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230321 |