CN115647328A

CN115647328A - Die casting die for preventing die casting from deforming

Info

Publication number: CN115647328A
Application number: CN202211588075.7A
Authority: CN
Inventors: 郑明宏; 何茂坤
Original assignee: Jinan Hongzheng Science & Technology Co ltd
Current assignee: Jinan Hongzheng Science & Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-01-31

Abstract

The invention relates to the field of die-casting molds. The invention discloses a die-casting die for preventing die-casting deformation, which aims to solve the problem that after die-casting is finished, a die-casting piece is required to be ejected out of a die cavity by ejector rods in the die, and because the surface of the die-casting piece is in an irregular shape, when the die-casting piece is in contact with a plurality of ejector rods, the ejector rods are in different contact with all positions of the die-casting piece to generate different forces, so that the surface of the die-casting piece is deformed due to the fact that the ejector rods abut against the surface of the die-casting piece to generate bulges when the ejector rods eject the die-casting piece. According to the invention, after the die casting is completed by the anti-deformation device, the die casting in the lower die cavity is abutted to the upper die cavity by the anti-deformation device, and the lower die can be driven to move in the opposite direction of the upper die when the anti-deformation device ejects the die casting in the lower die cavity, so that the other surface of the die casting is attached to the cavity of the upper die when the die casting is ejected by the ejector rod, thereby preventing deformation.

Description

Die casting die for preventing die casting from deforming

Technical Field

The invention relates to the field of die casting molds, in particular to a die casting mold for preventing die casting deformation.

Background

The die-casting die is a method for casting liquid die forging, a process completed on a special die-casting die forging machine. The basic technological process includes low speed or high speed casting of metal liquid, filling the metal liquid into the cavity of the mold with movable cavity surface, and pressurized forging with the metal liquid cooling process to eliminate shrinkage cavity and shrinkage porosity and to make the inner structure of the blank reach the forged crushed crystal grains. The comprehensive mechanical property of the blank is obviously improved. The motorcycle engine shell is formed by aluminum alloy die-casting, the material is lighter, and ADC12 and similar component brands are selected from multiple material brands. The material has high silicon and copper contents and low iron content. The alloy has good liquid fluidity and good cutting performance, and is beneficial to meeting the requirement of rapid forming of a die casting process.

The prior patent (publication number: CN 213997743) discloses an anti-deformation die for box type die castings, which comprises a lower die, a lower die core, a sliding block, a limiting rod, a top plate, an ejector rod, an elastic mechanism, a sliding block seat and a driving mechanism, wherein the lower die core is arranged on the lower die, the sliding block is arranged on the lower die in a sliding manner, the driving mechanism is arranged on one side of the lower die through a support and is connected with the sliding block through the sliding block seat, the ejector rod is horizontally and vertically arranged on the top plate, an installation cavity is arranged in the sliding block seat, the top plate is arranged in the installation cavity in a sliding manner, the ejector rod penetrates through the sliding block, and the limiting rod is respectively arranged on two sides of the top plate; during spacing, the limiting rod is pushed against the lower die core, and the elastic mechanism is arranged at the bottoms of the top plate and the mounting cavity and provides driving force for the push rod to move towards the lower die core. The mold opening device has the advantages that the structure is simple in the prior art, the adjustable ejector rod is arranged in the sliding block, so that the ejector rod supports the side wall of a product to prevent the product from deforming in the initial mold opening stage, and the product percent of pass is improved. The elastic mechanism is matched with the spring through the guide rod, so that the spring can stably output driving force.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: the ejector rod in the die is required to eject the die casting from the die cavity after the die casting is completed, the surface of the die casting is irregular, and the contact of the ejector rod and the ejector rod can lead to different forces generated by the contact of the ejector rod and each position of the die casting when the die casting is contacted by the ejector rod, so that the surface of the die casting can be deformed due to the fact that the ejector rod collides with the surface of the die casting to cause the phenomenon that the die casting is raised when the ejector rod ejects the die casting.

Disclosure of Invention

The invention aims to provide a die-casting die for preventing die-casting parts from deforming so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a die casting die of prevention die casting deformation, includes processing mesa, last mould, bed die, unloading tongs, molten metal ware of moulding plastics and shape device of preapring for an unfavorable turn of events, the processing mesa is the level and places in subaerial, go up mould and bed die all set up at the top of processing mesa and with the top sliding fit of processing mesa, upward be equipped with a plurality of slide bars on mould and the bed die, the unloading tongs sets up the top at last mould, the molten metal ware of moulding plastics sets up on the outer wall of last mould, and is equipped with the molten metal flow path in going up the mould, shape device of preapring for an unfavorable turn of events set up on the bed die and with bed die sliding fit, shape device of preapring for an unfavorable turn of events includes driving piece, driving medium and a plurality of ejector pin, the fixed top that sets up at the processing mesa, the driving medium sets up on the driving piece and with driving piece normal running fit, and a plurality of ejector pin is fixed set up on the driving piece and with bed die sliding fit.

Preferably, the driving member comprises a supporting seat, an electric driving cylinder, a driving plate, a pushing plate and two limiting rods, the supporting seat is arranged at the top of the processing table surface, the electric driving cylinder is arranged at the top of the supporting seat, a stroke sliding block of the electric driving cylinder is in sliding fit with the supporting seat, the driving plate is arranged on the stroke sliding block of the electric driving cylinder, two the one end symmetry of gag lever post is fixed set up on the drive plate and with bed die sliding fit, the cavity has been seted up on the bed die, the other end that the slurcam is fixed to be set up on two gag lever posts just is located the cavity, be equipped with the die casting die cavity that is used for die-casting motorcycle engine cover on cope match-die utensil and the bed die, it is a plurality of ejector pin non-uniform distribution is on the slurcam and corresponding with the bed die casting die cavity.

Preferably, the driving medium includes bracing piece, reverse rotation piece, first link, second link and mount, the fixed bottom that sets up at the supporting seat of bracing piece, reverse rotation piece is the rhombus setting, reverse rotation piece's central point set up on the bracing piece and with bracing piece normal running fit, the one end setting of first link just with drive plate normal running fit on the drive plate, the other end of first link and reverse rotation piece's rhombus one end normal running fit, the mount is fixed to be set up on the lateral wall of bed die, the one end setting of second link just with mount normal running fit on the mount, the other end of second link and reverse rotation piece's rhombus other end normal running fit.

Preferably, the plurality of ejector rods are all sleeved with buffer springs, two ends of each buffer spring are respectively connected with the push plate and the inner wall of the cavity of the lower die, and when the push plate drives the plurality of ejector rods to eject die castings in die casting cavities of the lower die, the buffer springs prevent the push plate from driving the ejector rods to move out at an excessively high speed so as to damage and deform the surfaces of the die castings.

Preferably, the processing table top is further provided with a moving device and a water-based release agent spraying device, the moving device is arranged at the top of the processing table top and connected with the upper die, the moving device drives the upper die to move towards the lower die on the processing table top, so that the upper die and the lower die are closed to die-cast a die-casting piece, and the water-based release agent spraying device is fixedly arranged on the side wall of the processing table top and located between the upper die and the lower die.

Preferably, the moving device comprises a pushing electric cylinder, a moving plate and four fixing rods, the pushing electric cylinder is arranged at the top of the processing table board, the moving plate is arranged on a stroke sliding block of the pushing electric cylinder and is in sliding fit with the top of the processing table board, one ends of the four fixing rods are symmetrically fixed on the moving plate in pairs, and the other ends of the four fixing rods are connected with the upper die.

Preferably, the water-based release agent spraying device comprises a fixed support, a transmission rod, a transmission gear and a water-based release agent sprayer, the fixed support is fixedly arranged on the side wall of the processing table, the transmission rod is arranged on the fixed support and is in running fit with the fixed support, the transmission gear is fixedly arranged on the transmission rod, the water-based release agent sprayer is sleeved on the transmission rod and is positioned between the upper mold and the lower mold, and a transmission rack meshed with the transmission gear is arranged on the outer wall of the upper mold.

Preferably, all be equipped with the anticollision sealing strip on the contact closed surface of upper die and bed die, the anticollision sealing strip through setting up makes upper die and bed die laminate the effect better when carrying out the die-casting closure to the die casting to avoid appearing the die-casting effect that the gap influences the die casting between upper die and the bed die.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, after the upper die and the lower die are pressed together to complete the die casting work on the motorcycle engine cover, the upper die keeps the original position, the driving electric cylinder drives the driving plate to move, the driving plate drives the pushing plate to move in the cavity of the lower die through the two limiting rods, so that the pushing plate can drive the plurality of ejector rods to push a die casting in the die casting cavity of the lower die to the die casting cavity of the upper die, the driving part drives the ejector rods to push the die casting, the die casting cavity in the upper die provides supporting force for the other end face of the die casting, the die casting cavity of the upper die is the same as the die casting in shape, and the situation that the die casting is deformed due to uneven stress when the die casting is contacted with the plurality of ejector rods is avoided when the die casting is pushed outwards by the ejector rods, and the buffer springs sleeved on the plurality of ejector rods can play a role of buffering movement of the ejector rods, so that the deformation completion work of the die casting due to overlarge force when the ejector rods push the die casting is further prevented.

According to the die casting taking device, when the driving piece drives the driving plate to enable the pushing plate to enable the die casting to be abutted against a die casting cavity in the upper die from a die casting cavity in the lower die through the ejector rod, the driving plate moves to drive the first connecting frame to move, the first connecting frame moves to pull the reverse rotating block to rotate on the supporting rod, the reverse rotating block rotates to pull the second connecting frame to move in the direction opposite to that of the first connecting frame, the second connecting frame drives the fixing frame to move to the position opposite to the driving plate, the driving plate enables the ejector rod to enable the die casting to abut against the die casting cavity in the upper die through the arrangement, the fixing frame can drive the lower die to move in the direction away from the upper die, the upper die is separated from the lower die, when the upper die is separated from the lower die, the die casting can be clamped and discharged through the discharging gripper at the top of the upper die, the die casting taking work is achieved, and the die casting is taken without deformation when the ejector rod is ejected out.

According to the invention, when the upper die is driven by the moving device to move towards the lower die, the transmission rack on the outer wall of the upper die drives the transmission gear to rotate, the transmission gear drives the transmission rod to rotate to drive the water-based release agent sprayer to swing, the water-based release agent sprayer swings towards the die casting cavity of the lower die after spraying the die casting cavity of the upper die and sprays the die casting cavity, so that a layer of isolation film is effectively formed among the upper die, the lower die and the molten metal before die casting of the die casting, and the die casting cavity is prevented from being directly washed by the molten metal, and through the arrangement, the upper die can be effectively sprayed in the moving process towards the lower die, so that an operator does not need to manually spray the die casting, the labor force of the operator is reduced, and the influence on the die casting caused by the evaporation of the water-based release agent due to the fact that the upper die and the lower die are not closed in a short time after the operator performs manual spraying is avoided.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a first partial perspective view of the present invention;

FIG. 3 is a partial perspective sectional view of the second embodiment of the present invention;

FIG. 4 is a first partial perspective view of the present invention;

FIG. 5 is a third partial perspective view of the present invention;

FIG. 6 is a fourth partial perspective view of the present invention;

FIG. 7 is a second partial perspective view of the present invention;

fig. 8 is a schematic view of a partial three-dimensional structure according to the present invention.

In the figure: 1. processing a table top; 2. an upper die; 3. a lower die; 31. a cavity; 32. die casting die cavity; 33. a slide bar; 34. an anti-collision sealing strip; 4. a blanking gripper; 5. a molten metal injector; 6. an anti-deformation device; 7. a drive member; 71. a supporting seat; 72. driving an electric cylinder; 73. a drive plate; 74. a push plate; 75. a limiting rod; 8. a transmission member; 81. a support bar; 82. a reverse turning block; 83. a first connecting frame; 84. a second link frame; 85. a fixed mount; 9. a top rod; 91. a buffer spring; 10. a mobile device; 101. pushing the electric cylinder; 102. moving the plate; 103. fixing the rod; 104. a drive rack; 11. a water-based release agent spraying device; 111. fixing a bracket; 112. a transmission rod; 113. a transmission gear; 114. a water-based release agent sprayer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution: the utility model provides a die casting die that prevention die casting warp, includes processing mesa 1, last mould 2, bed die 3, unloading tongs 4, molten metal ware 5 and anti-deformation device 6 of moulding plastics, processing mesa 1 is the level and places subaerial, go up mould 2 and bed die 3 all set up at processing mesa 1's top and with processing mesa 1's top sliding fit, upward be equipped with a plurality of slide bars 33 on mould 2 and the bed die 3, unloading tongs 4 sets up at the top of last mould 2, molten metal ware 5 sets up on the outer wall of last mould 2, and is equipped with the molten metal flow path in last mould 2, anti-deformation device 6 sets up on bed die 3 and with 3 sliding fit of bed die, anti-deformation device 6 includes driving piece 7, driving piece 8 and a plurality of ejector pin 9, driving piece 7 is fixed to be set up at processing mesa 1's top, driving piece 8 sets up on driving piece 7 and with driving piece 7 normal running fit, and a plurality of ejector pin 9 is fixed to be set up on driving piece 7 and with 3 sliding fit of bed die.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the driving member 7 includes a supporting seat 71, an electric driving cylinder 72, a driving plate 73, a pushing plate 74, and two limiting rods 75, the supporting seat 71 is disposed at the top of the processing table 1, the electric driving cylinder 72 is disposed at the top of the supporting seat 71, a stroke slider of the electric driving cylinder 72 is in sliding fit with the supporting seat 71, the driving plate 73 is disposed on the stroke slider of the electric driving cylinder 72, one ends of the two limiting rods 75 are symmetrically and fixedly disposed on the driving plate 73 and in sliding fit with the lower mold 3, the lower mold 3 is provided with a cavity 31, the pushing plate 74 is fixedly disposed at the other ends of the two limiting rods 75 and located in the cavity 31, the upper mold 2 and the lower mold 3 are provided with a die casting cavity 32 for die casting a motorcycle engine cover, and the plurality of push rods 9 are unevenly distributed on the pushing plate 74 and correspond to the die casting cavity 32 of the lower mold 3; after the upper die 2 and the lower die 3 are pressed together to complete die casting of a motorcycle engine cover, the upper die 2 keeps the original position, the driving electric cylinder 72 is driven to drive the driving plate 73 to move, the driving plate 73 drives the pushing plate 74 to move in the cavity 31 of the lower die 3 through the two limiting rods 75, so that the pushing plate 74 can drive the plurality of ejector rods 9 to push die castings in the die casting cavity 32 of the lower die 3 to the die casting cavity 32 of the upper die 2, the driving piece 7 drives the ejector rods 9 to push the die castings, the die casting cavity 32 in the upper die 2 provides supporting force for the other end face of the die castings, the die casting cavity 32 of the upper die 2 and the die castings are the same in shape, and the situation that the die castings are deformed due to uneven stress when the die castings are in contact with the plurality of ejector rods 9 is avoided when the die castings are pushed outwards through the arrangement, and the buffer springs 91 sleeved on the plurality of ejector rods 9 can play a role of buffering movement of the ejector rods 9 to further prevent the die castings from being excessively large force when the ejector rods 9 push the die castings to further to cause deformation of the die castings.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the transmission member 8 includes a support rod 81, a reverse rotation block 82, a first connection frame 83, a second connection frame 84, and a fixing frame 85, the support rod 81 is fixedly disposed at the bottom of the support seat 71, the reverse rotation block 82 is disposed in a diamond shape, a central point of the reverse rotation block 82 is disposed on the support rod 81 and is rotatably fitted with the support rod 81, one end of the first connection frame 83 is disposed on the drive plate 73 and is rotatably fitted with the drive plate 73, the other end of the first connection frame 83 is rotatably fitted with one diamond end of the reverse rotation block 82, the fixing frame 85 is fixedly disposed on an outer sidewall of the lower mold 3, one end of the second connection frame 84 is disposed on the fixing frame 85 and is rotatably fitted with the fixing frame 85, and the other end of the second connection frame 84 is rotatably fitted with the other diamond end of the reverse rotation block 82; the plurality of the ejector rods 9 are all sleeved with buffer springs 91, two ends of the plurality of the buffer springs 91 are respectively connected with the pushing plate 74 and the inner wall of the cavity 31 of the lower die 3, and when the pushing plate 74 drives the plurality of the ejector rods 9 to eject die castings in the die casting cavity 32 of the lower die 3, the buffer springs 91 prevent the pushing plate 74 from driving the ejector rods 9 to move out too fast to damage and deform the surfaces of the die castings;

when the driving member 7 drives the driving plate 73 to enable the pushing plate 74 to enable the die casting to abut against the die casting cavity 32 in the lower die 3 and the die casting cavity 32 in the upper die 2 through the ejector rods 9, the driving plate 73 moves to drive the first connecting frame 83 to move, the first connecting frame 83 moves to pull the reverse rotating block 82 to rotate on the supporting rod 81, the reverse rotating block 82 rotates to pull the second connecting frame 84 to move in the direction opposite to the first connecting frame 83, and then the second connecting frame 84 drives the fixing frame 85 to move in the direction opposite to the driving plate 73, through the arrangement, when the ejector rods 9 enable the die casting to abut against the die casting cavity 32 in the upper die 2 through the driving plate 73, the fixing frame 85 can drive the lower die 3 to move in the direction away from the upper die 2, so that the upper die 2 is separated from the lower die 3, and after the upper die 2 is separated from the lower die 3, the die casting can be subjected to blanking operation through the blanking gripper 4 at the top of the upper die 2, so that the die casting can be taken out, and the situation that the ejector rods 9 cannot deform when the ejector rods 9 take the die casting can be taken out can be achieved.

In this embodiment, as shown in fig. 1, 6, 7 and 8, the processing table 1 is further provided with a moving device 10 and a water-based mold release agent spraying device 11, the moving device 10 is disposed on the top of the processing table 1 and connected to the upper mold 2, the moving device 10 drives the upper mold 2 to move towards the lower mold 3 on the processing table 1, so that the upper mold 2 and the lower mold 3 are closed to perform die casting on a die casting piece, and the water-based mold release agent spraying device 11 is fixedly disposed on the sidewall of the processing table 1 and located between the upper mold 2 and the lower mold 3.

In this embodiment, as shown in fig. 1, 6, 7 and 8, the moving device 10 includes a pushing electric cylinder 101, a moving plate 102 and four fixing rods 103, the pushing electric cylinder 101 is disposed at the top of the processing table 1, the moving plate 102 is disposed on a stroke slider of the pushing electric cylinder 101 and is in sliding fit with the top of the processing table 1, one ends of the four fixing rods 103 are symmetrically fixed on the moving plate 102, and the other ends of the four fixing rods 103 are connected to the upper mold 2; when casting the engine outer frame of motorcycle, promote electric cylinder 101 and drive movable plate 102 and remove on processing mesa 1, and then make four dead levers 103 drive upper die 2 and draw close to mould 3 down on processing mesa 1, make upper die 2 and bed die 3 closed, later through metal liquid injection molding ware 5 with the metal liquid injection molding go up to carry out the die-casting operation to the motorcycle engine outer frame among the die casting die cavity 32 between mould 2 and the bed die 3, and can make upper die 2 and bed die 3 closed sealed effect better and then make the die-casting effect of die casting better through the crashproof sealing strip 34 that sets up when upper die 2 and bed die 3 contact closure.

In this embodiment, as shown in fig. 1, 6, 7 and 8, the water-based mold release agent spraying device 11 includes a fixing bracket 111, a transmission rod 112, a transmission gear 113 and a water-based mold release agent sprayer 114, the fixing bracket 111 is fixedly disposed on a side wall of the processing table 1, the transmission rod 112 is disposed on the fixing bracket 111 and is in rotating fit with the fixing bracket 111, the transmission gear 113 is fixedly disposed on the transmission rod 112, the water-based mold release agent sprayer 114 is sleeved on the transmission rod 112 and is located between the upper mold 2 and the lower mold 3, and a transmission rack 104 engaged with the transmission gear 113 is disposed on an outer wall of the upper mold 2; when the upper die 2 moves towards the lower die 3 under the driving of the moving device 10, the transmission rack 104 on the outer wall of the upper die 2 drives the transmission gear 113 to rotate, at the moment, the transmission gear 113 drives the transmission rod 112 to rotate so as to drive the water-based release agent sprayer 114 to swing, the water-based release agent sprayer 114 swings towards the die casting cavity 32 of the lower die 3 after spraying the die casting cavity 32 of the upper die 2, and sprays the die casting cavity 32 so as to effectively form a layer of isolation film between the upper die 2, the lower die 3 and the molten metal before die casting, so that the die casting cavity 32 is prevented from being directly washed by molten metal, and by the arrangement, the upper die 2 can be effectively sprayed in the moving process towards the lower die 3, so that an operator does not need to manually spray the die casting, the labor force of the operator is reduced, and the influence on the die casting caused by the evaporation of the water-based release agent due to the fact that the upper die 2 and the lower die 3 are not closed after the operator manually sprays is avoided.

In this embodiment, as shown in fig. 1 and fig. 2, all be equipped with the anticollision sealing strip 34 on the contact closed surface of last mould 2 and bed die 3, it is better to laminate the effect when the anticollision sealing strip 34 that makes last mould 2 and bed die 3 carry out the die-casting closure through setting up to avoid appearing the die-casting effect that the gap influences the die-casting between last mould 2 and the bed die 3.

The use method and the advantages of the invention are as follows: the use method of the die-casting die for preventing die-casting part deformation comprises the following working processes:

as shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8: when the engine outer frame of the motorcycle is cast, the electric cylinder 101 is pushed to drive the movable plate 102 to move on the processing table board 1, so that the four fixed rods 103 drive the upper die 2 to approach to the lower die 3 on the processing table board 1, the upper die 2 and the lower die 3 are closed, then the molten metal is injected into a die casting cavity 32 between the upper die 2 and the lower die 3 through the molten metal injector 5 to perform die casting operation on the engine outer frame of the motorcycle, and when the upper die 2 and the lower die 3 are in contact closure, the upper die 2 and the lower die 3 can be closed and sealed better through the arranged anti-collision sealing strip 34, so that the die casting effect of a die casting is better;

when the upper die 2 moves towards the lower die 3 under the driving of the moving device 10, the transmission rack 104 on the outer wall of the upper die 2 drives the transmission gear 113 to rotate, at the moment, the transmission gear 113 drives the transmission rod 112 to rotate so as to drive the water-based release agent sprayer 114 to swing, the water-based release agent sprayer 114 swings towards the die casting cavity 32 of the lower die 3 after spraying the die casting cavity 32 of the upper die 2, and sprays the die casting cavity 32 so as to effectively form a layer of isolation film among the upper die 2, the lower die 3 and the molten metal before die casting, so that the die casting cavity 32 is prevented from being directly washed by the molten metal, and by the arrangement, the upper die 2 can be effectively sprayed in the moving process towards the lower die 3, so that an operator does not need to manually spray the die casting, the labor force of the operator is reduced, and the influence on the die casting caused by the evaporation of the water-based release agent due to the fact that the upper die 2 and the lower die 3 are not closed after the operator manually sprays is avoided;

after the upper die 2 and the lower die 3 are pressed together to complete die casting of a motorcycle engine cover, the upper die 2 keeps the original position, the driving electric cylinder 72 is driven to drive the driving plate 73 to move, the driving plate 73 drives the pushing plate 74 to move in the cavity 31 of the lower die 3 through the two limiting rods 75, so that the pushing plate 74 can drive the plurality of ejector rods 9 to push a die casting in the die casting cavity 32 of the lower die 3 to the die casting cavity 32 of the upper die 2, the driving piece 7 drives the ejector rods 9 to push the die casting, the die casting cavity 32 in the upper die 2 provides supporting force for the other end face of the die casting, the die casting cavity 32 of the upper die 2 and the die casting are the same in shape, and the situation that the die casting is deformed due to uneven stress when the die casting is contacted with the plurality of ejector rods 9 is avoided when the die casting is pushed outwards by the ejector rods 9 through the arrangement, and the buffer springs 91 sleeved on the plurality of ejector rods 9 can play a role of buffering movement of the ejector rods 9 to further prevent the die casting from being deformed due to overlarge force when the ejector rods 9 push the die casting;

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a die casting die of prevention die casting deformation, includes processing mesa (1), goes up mould (2), bed die (3), unloading tongs (4), molten metal ware of moulding plastics (5) and anti-deformation device (6), processing mesa (1) is the level and places in subaerial, go up mould (2) and bed die (3) and all set up at the top of processing mesa (1) and with the top sliding fit of processing mesa (1), it is equipped with a plurality of slide bars (33) on mould (2) and bed die (3) to go up, unloading tongs (4) set up the top at last mould (2), molten metal ware of moulding plastics (5) set up on the outer wall of last mould (2), and be equipped with the molten metal flow path in going up mould (2), anti-deformation device (6) set up on bed die (3) and with bed die (3) sliding fit, its characterized in that: anti-deformation device (6) are including driving piece (7), driving medium (8) and a plurality of ejector pin (9), driving piece (7) are fixed to be set up at the top of processing mesa (1), driving medium (8) set up on driving piece (7) and with driving piece (7) normal running fit, and are a plurality of ejector pin (9) are fixed to be set up on driving piece (7) and with bed die (3) sliding fit.

2. A die casting mold for preventing deformation of a die casting according to claim 1, wherein: the driving piece (7) comprises a supporting seat (71), an electric driving cylinder (72), a driving plate (73), a pushing plate (74) and two limiting rods (75), the supporting seat (71) is arranged at the top of the machining table top (1), the electric driving cylinder (72) is arranged at the top of the supporting seat (71), a stroke sliding block of the electric driving cylinder (72) is in sliding fit with the supporting seat (71), the driving plate (73) is arranged on the stroke sliding block of the electric driving cylinder (72), one ends of the two limiting rods (75) are symmetrically and fixedly arranged on the driving plate (73) and are in sliding fit with the lower die (3), a cavity (31) is formed in the lower die (3), the pushing plate (74) is fixedly arranged at the other ends of the two limiting rods (75) and is located in the cavity (31), a die casting die cavity (32) for die-casting motorcycle engine covers is formed in the upper die (2) and the lower die (3), and a plurality of ejector rods (9) are unevenly distributed on the pushing plate (74) and correspond to the die casting die cavity (32) of the lower die-casting die (3).

3. A die casting mold for preventing deformation of a die casting according to claim 2, wherein: the transmission part (8) comprises a supporting rod (81), a reverse rotating block (82), a first connecting frame (83), a second connecting frame (84) and a fixing frame (85), the supporting rod (81) is fixedly arranged at the bottom of the supporting seat (71), the reverse rotating block (82) is arranged in a diamond shape, the central point of the reverse rotating block (82) is arranged on the supporting rod (81) and is in running fit with the supporting rod (81), one end of the first connecting frame (83) is arranged on the driving plate (73) and is in running fit with the driving plate (73), the other end of the first connecting frame (83) is in running fit with one end of the diamond shape of the reverse rotating block (82), the fixing frame (85) is fixedly arranged on the outer side wall of the lower die (3), one end of the second connecting frame (84) is arranged on the fixing frame (85) and is in running fit with the fixing frame (85), and the other end of the second connecting frame (84) is in running fit with the other end of the reverse rotating block (82).

4. A die casting mold for preventing deformation of a die casting according to claim 2, wherein: the buffer springs (91) are sleeved on the push rods (9), two ends of the buffer springs (91) are respectively connected with the push plate (74) and the inner wall of the cavity (31) of the lower die (3), and when the push plate (74) drives the push rods (9) to eject a die casting in the die casting cavity (32) of the lower die (3), the buffer springs (91) prevent the push plate (74) from driving the push rods (9) to move out too fast to damage and deform the surface of the die casting.

5. A die casting mold for preventing deformation of a die casting according to claim 1, wherein: the die casting machine is characterized in that a moving device (10) and a water-based release agent spraying device (11) are further arranged on the processing table board (1), the moving device (10) is arranged at the top of the processing table board (1) and connected with the upper die (2), the moving device (10) drives the upper die (2) to move towards the lower die (3) on the processing table board (1), so that the upper die (2) and the lower die (3) are closed to die-cast a die casting piece, and the water-based release agent spraying device (11) is fixedly arranged on the side wall of the processing table board (1) and located between the upper die (2) and the lower die (3).

6. A die casting mold for preventing deformation of a die casting according to claim 5, wherein: the moving device (10) comprises a pushing electric cylinder (101), a moving plate (102) and four fixing rods (103), wherein the pushing electric cylinder (101) is arranged at the top of the machining table top (1), the moving plate (102) is arranged on a stroke sliding block of the pushing electric cylinder (101) and is in sliding fit with the top of the machining table top (1), four fixing rods (103) are fixedly arranged on the moving plate (102) in a pairwise symmetrical mode, and the other ends of the four fixing rods (103) are connected with the upper die (2).

7. A die casting mold for preventing deformation of a die casting according to claim 6, wherein: the water-based release agent spraying device (11) comprises a fixing support (111), a transmission rod (112), a transmission gear (113) and a water-based release agent sprayer (114), wherein the fixing support (111) is fixedly arranged on the side wall of the processing table top (1), the transmission rod (112) is arranged on the fixing support (111) and is in running fit with the fixing support (111), the transmission gear (113) is fixedly arranged on the transmission rod (112), the water-based release agent sprayer (114) is sleeved on the transmission rod (112) and is positioned between an upper mold (2) and a lower mold (3), and a transmission rack (104) meshed with the transmission gear (113) is arranged on the outer wall of the upper mold (2).

8. A die casting mold for preventing deformation of a die casting according to claim 1, wherein: go up all to be equipped with on the contact closed surface of mould (2) and bed die (3) anticollision sealing strip (34), laminating effect when making mould (2) and bed die (3) die-casting closed is better through anticollision sealing strip (34) that set up to appear the gap between mould (2) and the bed die (3) and influence the die-casting effect of die-casting.