CN212976669U

CN212976669U - A die-casting mold

Info

Publication number: CN212976669U
Application number: CN202021418284.3U
Authority: CN
Inventors: 钱文龙; 张登峰; 周灵忠; 肖雪林; 叶勤良; 王建军
Original assignee: Shanghai Precise Industrial Co ltd
Current assignee: Shanghai Precise Industrial Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-16
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to the technical field of molds. In order to reduce the difficulty of production and processing of the frame and improve the qualified rate of finished products, the utility model proposes a die-casting die for die-casting and producing the frame, wherein, in the fixed die, the fixed die core is provided with a cavity and is installed in the middle of the fixed die plate. In the fixed die slot; in the movable die, the movable die core is provided with a core and a slag ladle slot and is installed in the movable die slot on the movable die plate. The end; the die foot is located at the bottom of the movable template and is fixedly connected with the movable template at both ends of the movable template; in the exhaust mechanism, the fixed exhaust plate is installed and fixed on the fixed template, the movable exhaust plate is installed and fixed on the movable template, and the movable exhaust plate is installed and fixed on the movable template. The fixed exhaust slot on the exhaust plate is connected with the slag bag slot. When the mold is closed, the fixed exhaust plate and the movable exhaust plate are buckled, and the fixed exhaust slot on the fixed exhaust plate is connected with the dynamic exhaust slot to form an exhaust plate. air channel. Using the die-casting die of the utility model can reduce deformation, reduce processing difficulty, and improve the qualified rate of finished products.

Description

Die-casting die

Technical Field

The utility model relates to the technical field of mold, especially, relate to a die-casting is with mould.

Background

The frame 1 shown in fig. 1 and 2 is applied to an electronic instrument. When the frame is prepared by adopting the existing mould, the structural stability of the frame is poor, and the problem of shrinkage deformation is easy to occur. When the frame 1 is formed by die casting, the flatness of each plane of the die-cast frame 1 is below 0.1, even the flatness requirement of each plane is below 0.05, and the processing requirements on the surface roughness and the appearance are very strict, so that the production and processing difficulty of the frame 1 is high, and the yield of finished products is low.

SUMMERY OF THE UTILITY MODEL

In order to reduce the production and processing difficulty of the frame and improve the qualification rate of finished products, the utility model provides a die-casting die for die-casting production of the frame, which comprises a fixed die, a movable die, a die foot and an exhaust mechanism, wherein the fixed die comprises a fixed die plate and a fixed die core, the middle part of the fixed die plate is provided with a fixed die groove for installing the fixed die core, and the fixed die core is provided with a cavity facing the fixed surface of the movable die;

the movable die comprises a movable die plate and a movable die core, a movable die groove for mounting the movable die core is formed in the middle of the movable die plate, a die core and a plurality of slag ladle grooves are formed in the movable die core, the movable die surface faces the fixed die, the die core corresponds to the die cavity in position, and the slag ladle grooves are close to the end portion of the die core;

the mould feet are positioned at the bottom of the movable mould plate and are fixedly connected with the movable mould plate at the two ends of the movable mould plate;

the exhaust mechanism comprises a fixed exhaust plate and a movable exhaust plate, the fixed exhaust plate is fixedly installed on the fixed template, the movable exhaust plate is fixedly installed on the movable template, a movable exhaust groove on the movable exhaust plate is communicated with a slag ladle groove on the movable mold core, and during mold closing, the fixed exhaust plate is buckled with the movable exhaust plate, and the fixed exhaust groove on the fixed exhaust plate is butted with the movable exhaust groove to form an exhaust channel.

When using, the utility model discloses the mould for die-casting passes through the die leg installation to be fixed on the wallboard of die-casting machine to improve the movable mould rigidity, the die-casting that arouses by the machine shock wave during the reduction production is warp in the twinkling of an eye with the mould, and then reduces the deformation that the frame that the die-casting formed warp and appears because of the die-casting with the mould. Additionally, the utility model discloses be provided with a plurality of cinder ladle grooves in the mould for die-casting and with the exhaust mechanism of cinder ladle groove intercommunication, like this, both can make the air of metal liquid for die-casting in with the die cavity discharge completely, can make the die cavity is filled fully to metal liquid for die-casting again to can effectively improve each planar flatness and the roughness of the frame that the die-casting formed, and then can reduce the production and processing degree of difficulty of frame, improve the finished product qualification rate of frame.

Preferably, a guide chute communicated with the fixed mold chute is arranged at the side edge of the fixed mold plate, a movable chute communicated with the movable mold chute is arranged at the side edge of the movable mold plate, and the guide chute and the movable chute are butted to form a chute for installing a core pulling mechanism during mold closing; the core pulling mechanism comprises a sliding block, an inclined guide post, a side mold core and a limiting block, the sliding block is positioned in the movable sliding chute and can slide in the movable sliding chute, and a sliding hole inclined towards the movable mold core is formed in the sliding block; the inclined guide post is installed on the movable template, and the free end of the inclined guide post penetrates through the sliding hole and is inserted into the inclined guide hole in the fixed template; the side core is positioned between the slide block and the core, the core surface of the side core is inserted into the cavity and is close to the core, and the connecting surface of the side core is connected with the slide block; the limiting block is positioned at the notch of the movable sliding groove and fixed on the side surface of the movable template. Therefore, when the die is opened, the inclined guide post is used for limiting the movement direction of the slide block, the movable sliding chute is used for limiting the movement track of the slide block, so that the slide block moves away from the movable die core in the movable sliding chute, the die core is further extracted out to complete the die opening, and the slide block is prevented from sliding out of the movable sliding chute by the limiting block in the die opening process, so that the die-casting production efficiency is improved; when the die is closed, the inclined guide post applies pretightening force to the slide block, so that the side mold core seals the cavity, and the slide block is prevented from being blocked due to the fact that molten metal for die casting enters the movable sliding groove through the cavity.

Preferably, a guide member is arranged in the movable sliding chute, the guide member is fixed on a side wall of the movable sliding chute, and a guide groove or a guide rail is arranged on a side wall of the guide member facing the middle part of the movable sliding chute. Like this, usable guide leads to the movement track of slider, avoids the slider to cause wearing and tearing to the lateral wall that moves the spout when moving the spout and slide, can effectively improve the movable mould board and to life, and then can effectively improve the utility model discloses die-casting is with the life of mould.

Preferably, a sliding protrusion is arranged at the top of the sliding block, the sliding protrusion is located in the guide sliding groove when the mold is closed, and a guide inclined plane of the sliding protrusion, which deviates from the movable mold core, is parallel to the central axis of the sliding hole. In a die closing state, the sliding protrusion at the top of the sliding block can be abutted against the inclined side wall of the guide sliding chute, and even if the sliding protrusion at the top of the sliding block is locked by the inclined side wall of the guide sliding chute, the side mold core and the sliding block are prevented from being misplaced due to the impact of metal liquid for die casting, so that the die casting effect and the die casting production efficiency are prevented from being influenced. In addition, in the die opening or die closing process, the sliding protrusion on the top of the sliding block can be prevented from being clamped by the inclined side wall of the guide sliding groove, the die opening or die closing efficiency is influenced, and the die casting production efficiency is improved. Furthermore, an inclined plane cushion block is arranged between the guide inclined plane of the sliding protrusion and the inclined side wall of the guide sliding chute, and the inclined plane cushion block is attached and fixed on the inclined side wall of the guide sliding chute. Therefore, the guide inclined plane of the sliding protrusion can be prevented from wearing the inclined side wall of the guide sliding groove in the die opening or die closing process, and the service life of the fixed die plate is prevented from being influenced.

Preferably, a guide through hole is formed in the limiting block, a guide rod is mounted on the sliding block, the free end of the guide rod penetrates out of the guide through hole, and a clamping head is arranged at the free end of the guide rod. Therefore, in the sliding process of the sliding block, the sliding direction of the sliding block in the movable sliding chute can be guided and controlled by the guide rod, and the sliding block is prevented from shaking or even misplacing in the sliding process; the sliding distance of the sliding block in the movable sliding groove can be limited by the clamping head, and the phenomenon that the sliding distance of the sliding block is too far to influence die opening or die closing is avoided.

Preferably, the side cores are inserted and fixed in connecting grooves on the sliding block. Therefore, when the die is opened, the slide block is far away from the movable die core, so that the side surface die core can be driven to be far away from the movable die core, and the side surface die core is separated from a frame formed by die casting; when the mold is closed, the slide block can push the side core to be close to the movable mold core when being close to the movable mold core, and then the side core is sealed to block the cavity. Furthermore, the side core is connected with the sliding block through a connecting bolt, so that the connection is simple and convenient.

Preferably, the fixed mold core and the movable mold core are both provided with cooling channels, and the cooling channels penetrate through the corresponding positions of the mold cavity and the mold core. Like this, at the die-casting in-process, the coolant liquid flows at cooling channel, can carry out abundant cooling to the die casting frame, and cooling rate is fast, and the cooling effect is good, and then can shorten the die sinking time greatly, effectively improves die-casting production efficiency.

Drawings

FIG. 1 is a schematic structural view of the A surface of a frame to be formed by die casting;

FIG. 2 is a schematic view of the structure of the B-side of the frame shown in FIG. 1;

fig. 3 is a schematic structural view of the die for die casting of the present invention;

FIG. 4 is a schematic sectional view A-A of FIG. 3;

FIG. 5 is a schematic sectional view of the structure of B-B in FIG. 3;

fig. 6 is the utility model discloses die-casting is with mould structure schematic diagram when demolising cover half, fixed exhaust plate and three guide pillar and guide pin bushing.

Detailed Description

The die for die casting according to the present invention will be described in detail with reference to fig. 3 to 6.

As shown in fig. 3-6, the die for die casting of the present invention comprises a fixed die, a movable die, a die foot and an exhaust mechanism, wherein the fixed die comprises a fixed die plate 11 and a fixed die core 12, a fixed die groove for installing the fixed die core 12 is arranged in the middle of the fixed die plate 11, and a cavity is arranged on a fixed surface of the fixed die core 12 facing the movable die; the movable mould comprises a movable mould plate 21 and a movable mould core 22, a movable mould groove for installing the movable mould core 22 is arranged in the middle of the movable mould plate 21, a mould core and a plurality of slag ladle grooves 221 are arranged on a movable connecting surface of the movable mould core 22 facing the fixed mould, the position of the mould core corresponds to that of the mould cavity, and the slag ladle grooves 221 are close to the end part of the mould core. When the mold is closed, the core on the movable mold core 22 extends into the corresponding cavity to form a mold cavity for die-casting the frame 3. Preferably, the movable mold core 12 is provided with two mold cores, and two ends and an inclined plane end of each mold core are respectively provided with a slag ladle groove 221, so that in the die casting process, when the molten metal for die casting is poured into the mold cavity through the pouring gate 222 on the movable mold core 22, the air in the pouring gate 222 and the mold cavity can be discharged into the slag ladle groove 221, thereby avoiding the defects of poor local filling and influence on the filling effect caused by the air entrainment of the gap existing in the pouring gate 22 and the mold cavity, and even influencing the flatness and surface roughness of each plane of the frame formed by die casting, and further improving the die casting effect and the qualification rate of the frame formed by die casting. Preferably, a cooling channel 121 is arranged in the fixed mold core 12, and the cooling channel 121 penetrates through the corresponding position of the mold cavity; the movable mold core 22 is provided with a cooling channel 222, and the cooling channel 222 penetrates through the corresponding position of the core. Like this, at the die-casting in-process, the coolant liquid flows at cooling channel, can carry out abundant cooling to die casting frame 3, and cooling rate is fast, and the cooling effect is good, and then can shorten the die sinking time greatly, effectively improves die-casting production efficiency. Preferably, a guide chute communicated with the fixed mold chute is arranged at the side edge of the fixed mold plate 11, a movable chute 23 communicated with the movable mold chute is arranged at the side edge of the movable mold plate 21, and when the mold is closed, the guide chute and the movable chute 23 are butted to form a chute for installing a core pulling mechanism; the core-pulling mechanism comprises a slide block 41, an inclined guide post 42, a side mold core 43 and a limit block 44, the slide block 41 is positioned in the movable sliding chute 23 and can slide in the movable sliding chute 23, and a slide hole (not shown in the figure) inclined towards the movable mold core 12 is arranged on the slide block 41; the inclined guide post 42 is installed on the movable die plate 11, and the free end of the inclined guide post 42 passes through the slide hole and is inserted into an inclined guide hole (not shown in the figure) on the fixed die plate 21; the side core 43 is positioned between the slide block 41 and the core, the core surface of the side core 43 is inserted into the cavity and is close to the core, and the connecting surface of the side core 43 is connected with the slide block 41; the limiting block 44 is positioned at the notch of the movable sliding chute 23 and fixed on the side surface of the movable template 21. Therefore, when the die is opened, the inclined guide post 42 is used for limiting the movement direction of the slide block 41, the movable chute 23 is used for limiting the movement track of the slide block 41, so that the slide block 41 moves away from the movable die core 22 in the movable chute 23, the die core is drawn out, the die opening is completed, the stop block 44 is used for preventing the slide block 41 from sliding out of the movable chute 23 in the die opening process, and the die-casting production efficiency is improved; when the die is closed, the inclined guide post 42 applies pretightening force to the slide block 41, so that the side mold core 43 seals the cavity, and the slide block 41 is prevented from being blocked due to the fact that molten metal for die casting enters the movable sliding groove 23 through the cavity. Preferably, a guide 45 is disposed in the movable sliding chute 23, the guide 45 is fixed on a side wall of the movable sliding chute 23, and a guide groove 451 is disposed on a side wall of the guide 45 facing the middle portion of the movable sliding chute 23. Like this, the guide way card on usable guide 45 slider 41 leads to slider 41's movement track, avoids slider 41 to cause wearing and tearing to the lateral wall that moves spout 23 when moving spout 23 and sliding, can effectively improve movable mould board 21 and to life, and then can effectively improve the utility model discloses die-casting is with the life of mould. Of course, a guide rail engaged with the slider 41 may be provided on a side wall of the guide 45 facing the middle portion of the movable chute 23 to guide the movement track of the slider 41. Preferably, the top of the slide block 41 is provided with a slide protrusion 411, the slide protrusion 411 is located in the guide sliding groove when the mold is closed, and a guide inclined plane of the slide protrusion 411 facing away from the movable mold core 22 is parallel to the central axis of the sliding hole. In a mold closing state, the sliding protrusion 411 at the top of the sliding block 41 can abut against the inclined side wall of the guide chute, so that even if the sliding protrusion 411 at the top of the sliding block 41 is locked by the inclined side wall of the guide chute, the side core 43 and the sliding block 41 are prevented from being displaced due to the impact of molten metal for pressure casting, and the pressure casting effect and the pressure casting production efficiency are prevented from being influenced. In addition, in the process of opening or closing the die, the sliding protrusion 411 at the top of the sliding block 41 can be prevented from being clamped by the inclined side wall of the guide sliding chute, so that the efficiency of opening or closing the die is influenced, and the production efficiency of die casting is improved. Preferably, a slope cushion block 46 is arranged between the guide slope of the sliding protrusion 411 and the slope side wall of the guide chute, and the slope cushion block 46 is attached and fixed on the slope side wall of the guide chute. Therefore, the guide inclined plane of the sliding protrusion can be prevented from wearing the inclined side wall of the guide sliding chute in the die opening or die closing process, and the service life of the fixed die plate 11 is prevented from being influenced. Preferably, the stopper 44 is provided with a guide through hole 441, the slider 41 is provided with a guide rod (not shown in the figure), a free end of the guide rod penetrates out of the guide through hole 441, and a chuck is arranged on the free end of the guide rod. Therefore, in the sliding process of the sliding block 41, the sliding direction of the sliding block 41 in the movable sliding chute 23 can be guided and controlled by the guide rod, so that the sliding block 41 is prevented from shaking or even misplacing in the sliding process; the sliding distance of the slide block 41 in the movable chute 23 can be limited by the chuck, so that the slide block 41 is prevented from being too far away to influence the die opening or die closing. Preferably, the side cores 43 are inserted into connecting slots fixed on the slider 41. Thus, when the mold is opened, the slide block 41 is far away from the movable mold core 22 to drive the side mold core 43 to be far away from the movable mold core 22, so that the side mold core 43 is separated from the die-cast frame 3; when the mold is closed, the slide block 41 is close to the movable mold core 22, and can push the side mold core 43 to be close to the movable mold core 22, so that the side mold core 43 blocks the cavity. Preferably, the side core 43 is connected with the sliding block 41 through a connecting bolt, and the connection is simple and convenient. Preferably, the fixed die plate 11 and the movable die plate 21 are provided with guide post holes for installing the guide posts 61, and guide sleeves 62 capable of being sleeved on the guide posts 61 are inserted into the guide post holes. Like this, at die sinking and compound die in-process, guide pillar 61 and guide pin bushing 62 play the guide effect, guarantee the movable mould and the correct position of cover half when installation and compound die, when preparing guide pillar 61 and guide pin bushing 62, need select for use the material that possesses enough rigidity and wearability to prolong the life of guide pillar 61 and guide pin bushing 62, and need be provided with reasonable fit clearance between guide pillar 61 and the guide pin bushing 62.

The mold feet 5 are positioned at the bottom of the movable mold plate 21 departing from the fixed mold plate 11 and are fixedly connected with the movable mold plate 21 at two ends of the movable mold plate 21. Thus, in utilizing the utility model discloses when die-casting forms frame 3 with mould die-casting, accessible die leg 5 will the utility model discloses die-casting is fixed on the wallboard of die-casting machine with the die-casting die-mounting, both can utilize the wallboard of die-casting machine to drive the movable mould motion, realizes die sinking and compound die operation, can utilize the die leg to support again the utility model discloses movable mould in the die-casting is with the mould improves the rigidity of movable mould to the deformation in the twinkling of an eye of the die-casting mould that arouses by the machine shock wave during reduction production, and then the deformation that the frame that reduces the die-casting and form appears because of die-casting.

The exhaust mechanism comprises a fixed exhaust plate 71 and a movable exhaust plate 72, the fixed exhaust plate 71 is installed on the fixed mold plate 11, the movable exhaust plate 72 is installed on the movable mold plate 21, a movable exhaust groove 721 on the movable exhaust plate 72 is communicated with a ladle groove 221 on the movable mold core 22, the fixed exhaust plate 71 is buckled with the movable exhaust plate 72 during mold closing, and the fixed exhaust groove (not shown) on the fixed exhaust plate 71 is butted with the movable exhaust groove 721 to form an exhaust channel. Therefore, the air in the cavity can be completely discharged by the molten metal for die-casting, and the cavity can be fully filled by the molten metal for die-casting, so that the flatness and the surface roughness of each plane of the frame formed by die-casting can be effectively improved, the production and processing difficulty of the frame can be reduced, and the finished product qualification rate of the frame can be improved. Preferably, move exhaust groove 721 and two at least cinder ladle grooves 221 intercommunication, like this, reducible exhaust mechanism's quantity is simplified the utility model discloses the structure of mould for die-casting reduces the utility model discloses the manufacturing cost of mould for die-casting.

The utility model discloses mould for die-casting still includes spreader 8, and this spreader 8 is installed on the cover half, and this spreader is pressed when the compound die and is put on movable mould core 22 and through watering 222 and die cavity intercommunication on the movable mould core 22. Under the compound die state, accessible spreader 8 to the utility model discloses pour into the metal liquid for die-casting in the mould for die-casting, and the metal liquid for die-casting that pours into on the movable mould core 22 flows into the die cavity through watering 222, and the die-casting forms die casting frame 3. Thus, the sprue cross-sectional area can be adjusted by the spreader cone 8, the molten metal flow direction for die casting is changed, and the molten metal consumption is reduced. In order to make the die-casting metal liquid flow into the die cavity fast, the runner 222 adopts a large-diameter runner, and the area of the slag ladle opening of the runner 222 close to the core is enlarged, so that the die cavity is filled with the die-casting metal liquid fast, the phenomenon that a gap is formed in the runner and air is coiled is avoided, and the problem of poor local filling is avoided. In addition, the edge of cinder ladle groove 221 sets up to two-sided radius angle to prevent the sticking condition, improve production efficiency, prolong the utility model discloses the life of mould for die-casting.

Claims

1. A die-casting die is characterized by comprising a fixed die, a movable die, die feet and an exhaust mechanism, wherein the fixed die comprises a fixed die plate and a fixed die core, a fixed die groove for mounting the fixed die core is formed in the middle of the fixed die plate, and a die cavity is formed in the fixed die core facing a fixed connecting surface of the movable die;

2. The die for die casting according to claim 1, wherein a guide chute communicated with the fixed die chute is arranged on the side edge of the fixed die plate, a movable chute communicated with the movable die chute is arranged on the side edge of the movable die plate, and when die assembly is carried out, the guide chute and the movable chute are butted to form a chute for installing a core pulling mechanism; the core pulling mechanism comprises a sliding block, an inclined guide post, a side mold core and a limiting block, the sliding block is positioned in the movable sliding chute and can slide in the movable sliding chute, and a sliding hole inclined towards the movable mold core is formed in the sliding block; the inclined guide post is installed on the movable template, and the free end of the inclined guide post penetrates through the sliding hole and is inserted into the inclined guide hole in the fixed template; the side core is positioned between the slide block and the core, the core surface of the side core is inserted into the cavity and is close to the core, and the connecting surface of the side core is connected with the slide block; the limiting block is positioned at the notch of the movable sliding groove and fixed on the side surface of the movable template.

3. The die-casting die according to claim 2, wherein a guide member is provided in the movable chute, the guide member is fixed to a side wall of the movable chute, and a guide groove or a guide rail is provided on a side wall of the guide member toward a middle portion of the movable chute.

4. The die for die casting according to claim 2 or 3, wherein a sliding protrusion is provided on a top portion of the slide block, the sliding protrusion is located in the guide sliding groove when the die is closed, and a guide inclined surface of the sliding protrusion facing away from the movable die core is parallel to a central axis of the sliding hole.

5. The die-casting die according to claim 4, wherein a slope cushion block is arranged between the guide slope of the sliding protrusion and the side wall of the guide chute, and the slope cushion block is attached and fixed on the side wall of the guide chute.

6. The die-casting die according to claim 2 or 3, wherein the stopper is provided with a guide through hole, the slider is provided with a guide rod, a free end of the guide rod penetrates through the guide through hole, and a chuck is provided at the free end of the guide rod.

7. The die-casting die according to claim 2 or 3, wherein the side core is inserted and fixed in a coupling groove on the slide block.

8. The die for die casting according to claim 7, wherein the side core is connected to the slide by a connecting bolt.

9. The die for die casting according to any one of claims 1 to 3, wherein a cooling passage is provided in each of the stationary core and the movable core.