A die-casting mold for preventing deformation of die-cast parts

Abstract

The present invention relates to the field of die-casting molds. The present invention discloses a die-casting mold for preventing die-casting parts from being deformed. The problem to be solved by the present invention is that after the die-casting part is completed, the die-casting part needs to be ejected from the mold cavity by a push rod in the mold. Since the surface of the die-casting part is irregular in shape, when the die-casting part contacts a plurality of push rods, the forces generated by the push rods contacting the various positions of the die-casting part are different, thereby causing the surface of the die-casting part to be convex due to the push rods contacting the surface of the die-casting part when the push rods eject the die-casting part, causing the die-casting part to be deformed. The present invention has an anti-deformation device. After the die-casting part is completed, the anti-deformation device pushes the die-casting part in the cavity of the lower mold to the cavity of the upper mold. When the anti-deformation device ejects the die-casting part in the cavity of the lower mold, it can also drive the lower mold to move in the opposite direction of the upper mold, thereby causing the other side of the die-casting part to fit with the cavity of the upper mold when it is ejected by the push rod, thereby preventing deformation.

Description

Technical Field

[0001] The invention relates to the field of die-casting dies, in particular to a die-casting die for preventing die-casting parts from being deformed. Background Art

[0002] Die casting is a method of casting liquid die forging, a process completed on a dedicated die casting forging machine. Its basic process is: the molten metal is first cast and filled into the mold cavity at a low or high speed. The mold has a movable cavity surface. It is pressurized and forged as the molten metal cools, which not only eliminates the shrinkage defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state. The comprehensive mechanical properties of the blank are significantly improved. The motorcycle engine housing is die-casted with aluminum alloy, which is light in material. The material grade is mostly ADC12 and similar composition grades. The silicon and copper content of this material is high and the iron content is low. The alloy has good liquid fluidity and good cutting performance, which is conducive to meeting the requirements of rapid prototyping in the die casting process.

[0003] An existing patent (publication number: CN213997743) discloses a die for preventing deformation of box-type die castings. The die comprises a lower die, a lower die core, a slider, a limit rod, a top plate, an ejector pin, an elastic mechanism, a slider seat, and a drive mechanism. The lower die core is mounted on the lower die, and the slider slides on the lower die. The drive mechanism is mounted on one side of the lower die via a bracket and connected to the slider via the slider seat. The ejector pin is mounted horizontally and vertically on the top plate. The slider seat defines a mounting cavity within which the top plate slides. The ejector pin passes through the slider, and the limit rods are located on either side of the top plate. When the pin is positioned, the limit rods press against the lower die core. The elastic mechanism, located between the top plate and the bottom of the mounting cavity, provides the ejector pin with the driving force to move toward the lower die core. This prior art has a simple structure. The adjustable ejector pin within the slider ensures that during the initial mold opening, the ejector pin is supported against the side wall of the product to prevent deformation, thereby improving product quality. The elastic mechanism, coupled with a guide rod and a spring, ensures a stable output of the driving force.

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: after the die-casting is completed, the die-casting needs to be ejected from the mold cavity by the ejector pin in the mold. Because the surface of the die-casting is irregular in shape, when the die-casting contacts several ejector pins, the forces generated by the several ejector pins contacting different positions of the die-casting will be different, resulting in the surface of the die-casting appearing to be bulged due to the ejector pins contacting the surface of the die-casting when the ejector pin ejects the die-casting, causing the die-casting to be deformed. Summary of the Invention

[0005] The object of the present invention is to provide a die-casting mold for preventing deformation of die-casting parts, so as to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned object, the present invention provides the following technical solutions: a die-casting mold for preventing deformation of die-casting parts, comprising a processing table, an upper mold, a lower mold, a blanking gripper, a molten metal injector and an anti-deformation device, wherein the processing table is horizontally placed on the ground, the upper mold and the lower mold are both arranged on the top of the processing table and slide with the top of the processing table, the upper mold and the lower mold are provided with a plurality of sliding rods, the blanking gripper is arranged on the top of the upper mold, the molten metal injector is arranged on the outer wall of the upper mold, and a molten metal flow path is provided in the upper mold, the anti-deformation device is arranged on the lower mold and slides with the lower mold, the anti-deformation device comprises a driving member, a transmission member and a plurality of ejector rods, the driving member is fixedly arranged on the top of the processing table, the transmission member is arranged on the driving member and rotates with the driving member, and the plurality of ejector rods are fixedly arranged on the driving member and slide with the lower mold.

[0006] Preferably, the driving part includes a support seat, a driving electric cylinder, a driving plate, a push plate and two limit rods. The support seat is arranged on the top of the processing table, the driving electric cylinder is arranged on the top of the support seat and the stroke slider of the driving electric cylinder slides with the support seat, the driving plate is arranged on the stroke slider of the driving electric cylinder, one end of the two limit rods is symmetrically fixed on the driving plate and slides with the lower mold, a cavity is opened on the lower mold, the push plate is fixed on the other end of the two limit rods and is located in the cavity, the upper mold and the lower mold are provided with a die-casting cavity for die-casting motorcycle engine cover, and several of the push rods are unevenly distributed on the push plate and correspond to the die-casting cavity of the lower mold.

[0007] Preferably, the transmission member includes a support rod, a reverse rotation block, a first connecting frame, a second connecting frame and a fixed frame, the support rod is fixedly arranged at the bottom of the support seat, the reverse rotation block is arranged in a diamond shape, the center point of the reverse rotation block is arranged on the support rod and rotatably cooperates with the support rod, one end of the first connecting frame is arranged on the driving plate and rotatably cooperates with the driving plate, the other end of the first connecting frame rotatably cooperates with one diamond-shaped end of the reverse rotation block, the fixed frame is fixedly arranged on the outer side wall of the lower mold, one end of the second connecting frame is arranged on the fixed frame and rotatably cooperates with the fixed frame, and the other end of the second connecting frame rotatably cooperates with the other diamond-shaped end of the reverse rotation block.

[0008] Preferably, several of the ejector rods are sleeved with buffer springs, and the two ends of the buffer springs are respectively connected to the push plate and the inner wall of the cavity of the lower mold. When the push plate drives the several ejector rods to eject the die-casting in the die-casting cavity of the lower mold, the buffer springs prevent the push plate from driving the ejector rods to move out too quickly, causing damage and deformation to the surface of the die-casting.

[0009] Preferably, the processing table is also provided with a moving device and a water-based release agent spraying device. The moving device is arranged on the top of the processing table and is connected to the upper mold. The moving device drives the upper mold to move toward the lower mold on the processing table, so that the upper mold and the lower mold are closed to die-cast the die-casting part. The water-based release agent spraying device is fixedly arranged on the side wall of the processing table and is located between the upper mold and the lower mold.

[0010] Preferably, the moving device includes a pushing electric cylinder, a moving plate and four fixed rods. The pushing electric cylinder is arranged on the top of the processing table. The moving plate is arranged on the stroke slider of the pushing electric cylinder and slides with the top of the processing table. One ends of the four fixed rods are symmetrically fixed on the moving plate in pairs, and the other ends of the four fixed rods are connected to the upper mold.

[0011] Preferably, the water-based release agent spraying device includes a fixed bracket, a transmission rod, a transmission gear and a water-based release agent sprayer, the fixed bracket is fixedly set on the side wall of the processing table, the transmission rod is set on the fixed bracket and rotatably cooperates with the fixed bracket, the transmission gear is fixedly set on the transmission rod, the water-based release agent sprayer is sleeved on the transmission rod and is located between the upper mold and the lower mold, and a transmission rack meshing with the transmission gear is provided on the outer wall of the upper mold.

[0012] Preferably, anti-collision sealing strips are provided on the contact closing surfaces of the upper mold and the lower mold. The anti-collision sealing strips can make the upper mold and the lower mold fit better when they are closed for die-casting, thereby avoiding the formation of gaps between the upper mold and the lower mold that affect the die-casting effect of the die-casting part.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, after the upper mold and the lower mold are pressed together to complete the die-casting work of the motorcycle engine cover, the upper mold remains in its original position, and 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 mold through two limit rods, so that the pushing plate can drive several ejector rods to push the die-casting in the die-casting cavity of the lower mold toward the die-casting cavity of the upper mold, so that when the driving part drives the ejector rod to push the die-casting, the die-casting cavity in the upper mold provides support force for the other end face of the die-casting, and the shape of the die-casting cavity of the upper mold is the same as that of the die-casting. Through this arrangement, when the ejector rod pushes the die-casting outward, the situation in which the die-casting is deformed due to uneven force when it contacts the several ejector rods is avoided, and the buffer springs sleeved on the several ejector rods can play the role of buffering the movement of the ejector rod, further preventing the deformation of the die-casting due to excessive force when the ejector rod pushes the die-casting to complete the work.

[0015] When the cam is in the closed position, the first connecting frame is moved, and the first connecting frame is pulled by the support rod to rotate on the support rod, and the reverse rotating block rotates and pulls the second connecting frame to move in the opposite direction of the first connecting frame, thereby causing the second connecting frame to drive the fixed frame to move to the opposite place of the driving plate. Through this arrangement, the driving plate causes the push rod to contact the die-casting cavity in the upper mold, and the fixed frame will drive the lower mold to move in the direction away from the upper mold, thereby separating the upper mold from the lower mold. After the upper mold is separated from the lower mold, the blanking gripper on the top of the upper mold can clamp and discharge the die-casting, thereby realizing the die-casting material removal work. In this way, the die-casting is removed without causing deformation when the push rod ejects the die-casting.

[0016] In the present invention, when the upper mold moves toward the lower mold driven by the moving device, the transmission rack on the outer wall of the upper mold will drive the transmission gear to rotate. At this time, the transmission gear will drive the transmission rod to rotate and then drive the water-based release agent sprayer to swing. The water-based release agent sprayer sprays the die-casting cavity of the upper mold and then swings toward the die-casting cavity of the lower mold to spray it, so as to effectively form an isolation film between the upper mold, the lower mold and the metal liquid before die-casting, so that the die-casting cavity is protected from direct erosion of the molten metal liquid. In addition, this arrangement can effectively enable the upper mold to spray during the movement of the lower mold, thereby eliminating the need for the operator to manually spray the die-casting, reducing the labor of the operator, and avoiding the evaporation of the water-based release agent that affects the die-casting due to the upper and lower molds not being closed for a short time after the operator manually sprays. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 This is a partial three-dimensional structure cutaway view of the present invention. Figure 1 ;

[0019] Figure 3 This is a partial three-dimensional structure cutaway view of the present invention. Figure 2 ;

[0020] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0021] Figure 5 This is a partial three-dimensional structure cutaway view of the present invention. Figure 3 ;

[0022] Figure 6 This is a partial three-dimensional structure cutaway view of the present invention. Figure 4 ;

[0023] Figure 7 This is a partial three-dimensional structure cutaway view of the present invention. Figure 2 ;

[0024] Figure 8 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 3 .

[0025] In the figure: 1. Processing table; 2. Upper mold; 3. Lower mold; 31. Cavity; 32. Die casting cavity; 33. Sliding rod; 34. Anti-collision sealing strip; 4. Unloading gripper; 5. Liquid metal injector; 6. Anti-deformation device; 7. Driving member; 71. Support seat; 72. Driving electric cylinder; 73. Driving plate; 74. Pushing plate; 75. Limiting rod; 8. Transmission member; 81. Support rod; 82. Reverse rotation block; 83. First connecting frame; 84. Second connecting frame; 85. Fixed frame; 9. Push rod; 91. Buffer spring; 10. Moving device; 101. Pushing electric cylinder; 102. Moving plate; 103. Fixed rod; 104. Transmission rack; 11. Water-based release agent spraying device; 111. Fixed bracket; 112. Transmission rod; 113. Transmission gear; 114. Water-based release agent sprayer. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figures 1 to 8 As shown, the present invention provides a technical solution: a die-casting mold for preventing deformation of die-cast parts, comprising a processing table 1, an upper mold 2, a lower mold 3, a blanking gripper 4, a molten metal injector 5 and an anti-deformation device 6, wherein the processing table 1 is placed horizontally on the ground, the upper mold 2 and the lower mold 3 are both arranged on the top of the processing table 1 and slide with the top of the processing table 1, a plurality of sliding rods 33 are provided on the upper mold 2 and the lower mold 3, the blanking gripper 4 is arranged on the top of the upper mold 2, the molten metal injector 5 is arranged on the outer wall of the upper mold 2, and a molten metal flow path is provided in the upper mold 2, the anti-deformation device 6 is arranged on the lower mold 3 and slides with the lower mold 3, the anti-deformation device 6 includes a driving member 7, a transmission member 8 and a plurality of ejector rods 9, the driving member 7 is fixedly arranged on the top of the processing table 1, the transmission member 8 is arranged on the driving member 7 and rotates with the driving member 7, and the plurality of ejector rods 9 are fixedly arranged on the driving member 7 and slide with the lower mold 3.

[0028] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 ,and Figure 5 As shown, the driving member 7 includes a support seat 71, a driving electric cylinder 72, a driving plate 73, a pushing plate 74 and two limiting rods 75. The support seat 71 is arranged on the top of the processing table 1, the driving electric cylinder 72 is arranged on the top of the support seat 71 and the stroke slider of the driving electric cylinder 72 is slidably matched with the support seat 71, the driving plate 73 is arranged on the stroke slider of the driving electric cylinder 72, one end of the two limiting rods 75 is symmetrically fixed on the driving plate 73 and slidably matched with the lower mold 3, the lower mold 3 is provided with a cavity 31, the pushing plate 74 is fixedly provided on the other end of the two limiting rods 75 and is 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 several of the push rods 9 are unevenly distributed on the pushing plate 74 and correspond to the die-casting cavity 32 of the lower mold 3; when the upper mold 2 and the lower mold 3 are pressed together to complete the motorcycle engine After the die-casting of the machine cover, the upper mold 2 remains in its original position, and the driving electric cylinder 72 drives the driving plate 73 to move. The driving plate 73 drives the pushing plate 74 to move in the cavity 31 of the lower mold 3 through the two limit rods 75, so that the pushing plate 74 can drive several ejector rods 9 to push the die-casting in the die-casting cavity 32 of the lower mold 3 toward the die-casting cavity 32 of the upper mold 2. When the driving member 7 drives the ejector rod 9 to push the die-casting, the die-casting cavity 32 in the upper mold 2 provides support force for the other end face of the die-casting and the die-casting cavity 32 of the upper mold 2 has the same shape as the die-casting. Through this arrangement, when the ejector rod 9 ejects the die-casting outward, the die-casting is prevented from being deformed due to uneven force when contacting the ejector rods 9, and the buffer springs 91 mounted on the ejector rods 9 can play the role of buffering the movement of the ejector rod 9, further preventing the ejector rod 9 from pushing the die-casting with excessive force, thereby completing the work.

[0029] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 ,and Figure 5As shown, the transmission member 8 includes a support rod 81, a reverse rotation block 82, a first connecting frame 83, a second connecting frame 84 and a fixed frame 85. The support rod 81 is fixedly arranged at the bottom of the support seat 71, and the reverse rotation block 82 is arranged in a diamond shape. The center point of the reverse rotation block 82 is arranged on the support rod 81 and rotates with the support rod 81. One end of the first connecting frame 83 is arranged on the driving plate 73 and rotates with the driving plate 73. The other end of the first connecting frame 83 rotates with one end of the diamond shape of the reverse rotation block 82. The fixed frame 85 is fixedly arranged on the lower mold 3 On the outer wall, one end of the second connecting frame 84 is arranged on the fixing frame 85 and rotates with the fixing frame 85, and the other end of the second connecting frame 84 rotates with the other end of the diamond of the reverse rotation block 82; a plurality of the ejector rods 9 are sleeved with a buffer spring 91, and the two ends of the plurality of the buffer springs 91 are respectively connected to the push plate 74 and the inner wall of the cavity 31 of the lower mold 3. When the push plate 74 drives the plurality of ejector rods 9 to eject the die-casting in the die-casting cavity 32 of the lower mold 3, the buffer springs 91 prevent the push plate 74 from driving the ejector rods 9 to move out too quickly, thereby causing damage and deformation to the surface of the die-casting;

[0030] When the driving member 7 drives the driving plate 73 to make the pushing plate 74 push the die casting from the die casting cavity 32 in the lower mold 3 to the die casting cavity 32 in the upper mold 2 through the ejector 9, the driving plate 73 moves to drive the first connecting frame 83 to move, and the first connecting frame 83 moves to pull the reverse rotating block 82 to rotate on the support rod 81, and the reverse rotating block 82 rotates to pull the second connecting frame 84 to move in the opposite direction of the first connecting frame 83, thereby causing the second connecting frame 84 to drive the fixing frame 85 to move to the opposite side of the driving plate 73. When the driving plate 73 makes the ejector rod 9 push the die-casting part against the die-casting part cavity 32 in the upper mold 2, the fixing frame 85 drives the lower mold 3 to move away from the upper mold 2, thereby separating the upper mold 2 from the lower mold 3. After the upper mold 2 is separated from the lower mold 3, the die-casting part can be clamped and unloaded by the unloading gripper 4 on the top of the upper mold 2, thereby realizing the material removal of the die-casting part. In this way, the die-casting part will not be deformed when the ejector rod 9 ejects the die-casting part.

[0031] In this embodiment, Figure 1 、 Figure 6 、 Figure 7 and Figure 8As shown, the processing table 1 is also provided with a moving device 10 and a water-based release agent spraying device 11. The moving device 10 is arranged on the top of the processing table 1 and is connected to the upper mold 2. The moving device 10 drives the upper mold 2 to move toward the lower mold 3 on the processing table 1, so that the upper mold 2 and the lower mold 3 are closed to die-cast the die-casting part. The water-based release agent spraying device 11 is fixedly arranged on the side wall of the processing table 1 and is located between the upper mold 2 and the lower mold 3.

[0032] In this embodiment, Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, the moving device 10 includes a pushing electric cylinder 101, a moving plate 102 and four fixed rods 103. The pushing electric cylinder 101 is set on the top of the processing table 1, and the moving plate 102 is set on the stroke slider of the pushing electric cylinder 101 and slides with the top of the processing table 1. One end of the four fixed rods 103 is symmetrically fixed on the moving plate 102 in pairs, and the other end of the four fixed rods 103 is connected to the upper mold 2. When the motorcycle engine frame is cast, the pushing electric cylinder 101 drives The movable plate 102 moves on the processing table 1, and then the four fixed rods 103 drive the upper mold 2 to move closer to the lower mold 3 on the processing table 1, so that the upper mold 2 and the lower mold 3 are closed, and then the molten metal is injected into the die-casting cavity 32 between the upper mold 2 and the lower mold 3 through the molten metal injector 5 to perform a die-casting operation on the motorcycle engine frame. When the upper mold 2 and the lower mold 3 are in contact and closed, the anti-collision sealing strip 34 provided can make the upper mold 2 and the lower mold 3 closed and sealed better, thereby achieving a better die-casting effect of the die-casting part.

[0033] In this embodiment, Figure 1 、 Figure 6 、 Figure 7 and Figure 8As shown, the water-based release agent spraying device 11 includes a fixed bracket 111, a transmission rod 112, a transmission gear 113 and a water-based release agent sprayer 114, the fixed bracket 111 is fixedly arranged on the side wall of the processing table 1, the transmission rod 112 is arranged on the fixed bracket 111 and rotates with the fixed bracket 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 located between the upper mold 2 and the lower mold 3, and a transmission rack 104 meshing with the transmission gear 113 is provided on the outer wall of the upper mold 2; and when the upper mold 2 moves to the lower mold 3 under the drive of the moving device 10, the transmission rack 104 on the outer wall of the upper mold 2 will drive the transmission gear 113 to rotate, and at this time the transmission The gear 113 will drive the transmission rod 112 to rotate and then drive the water-based release agent sprayer 114 to swing. The water-based release agent sprayer 114 sprays the die-casting cavity 32 of the upper mold 2 and then swings toward the die-casting cavity 32 of the lower mold 3 to spray it, so that the die-casting can effectively form an isolation film between the upper mold 2, the lower mold 3 and the metal liquid before die-casting, so that the die-casting cavity 32 is protected from direct erosion of the molten metal liquid. This setting can effectively enable the upper mold 2 to spray during the movement toward the lower mold 3, thereby eliminating the need for the operator to manually spray the die-casting, reducing the operator's labor, and avoiding the evaporation of the water-based release agent that affects the die-casting due to the upper mold 2 and the lower mold 3 not being closed for a short time after the operator manually sprays.

[0034] In this embodiment, Figure 1 and Figure 2 As shown, the contact closing surfaces of the upper mold 2 and the lower mold 3 are both provided with anti-collision sealing strips 34. The anti-collision sealing strips 34 are provided to make the upper mold 2 and the lower mold 3 fit better when closing for die-casting, thereby avoiding the formation of gaps between the upper mold 2 and the lower mold 3 that affect the die-casting effect of the die-casting.

[0035] The use method and advantages of the present invention: The use method of the die-casting mold for preventing deformation of die-casting parts has the following working process:

[0036] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8As shown, when casting the motorcycle engine frame, the electric cylinder 101 drives the movable plate 102 to move on the processing table 1, and then the four fixing rods 103 drive the upper mold 2 to move closer to the lower mold 3 on the processing table 1, so that the upper mold 2 and the lower mold 3 are closed. Then, the molten metal is injected into the die casting cavity 32 between the upper mold 2 and the lower mold 3 by the molten metal injector 5 to perform the die casting operation on the motorcycle engine frame. When the upper mold 2 and the lower mold 3 are in contact and closed, the anti-collision sealing strip 34 provided can ensure a better sealing effect between the upper mold 2 and the lower mold 3, thereby improving the die casting effect of the die casting.

[0037] When the upper mold 2 moves toward the lower mold 3 driven by the moving device 10, the transmission rack 104 on the outer wall of the upper mold 2 drives the transmission gear 113 to rotate. At this time, the transmission gear 113 drives the transmission rod 112 to rotate and then drives the water-based release agent sprayer 114 to swing. The water-based release agent sprayer 114 sprays the die-casting cavity 32 of the upper mold 2 and then swings toward the die-casting cavity 32 of the lower mold 3 to spray it, thereby effectively forming an isolation film between the upper mold 2, the lower mold 3 and the metal liquid before die-casting, so that the die-casting cavity 32 is protected from direct erosion of the molten metal liquid. In addition, this arrangement can effectively enable the upper mold 2 to spray during the movement of the lower mold 3, thereby eliminating the need for the operator to manually spray the die-casting, reducing the operator's labor, and avoiding the evaporation of the water-based release agent that affects the die-casting due to the upper mold 2 and the lower mold 3 not being closed for a short time after the operator manually sprays.

[0038] After the upper mold 2 and the lower mold 3 are pressed together to complete the die-casting of the motorcycle engine cover, the upper mold 2 remains in its original position and the driving cylinder 72 drives the driving plate 73 to move. The driving plate 73 drives the pushing plate 74 to move in the cavity 31 of the lower mold 3 through two limit rods 75, so that the pushing plate 74 can drive several push rods 9 to push the die-casting in the die-casting cavity 32 of the lower mold 3 to the die-casting cavity 32 of the upper mold 2, so that the driving member 7 drives the push rods 9 to push the die-casting. The die casting cavity 32 in the mold 2 provides support for the other end face of the die casting, and the die casting cavity 32 of the upper mold 2 has the same shape as the die casting. Thus, through this arrangement, when the ejector 9 ejects the die casting outward, the die casting is prevented from being deformed due to uneven force when contacting the ejector 9. In addition, the buffer springs 91 sleeved on the ejector 9 can buffer the movement of the ejector 9, further preventing the deformation of the die casting due to excessive force when the ejector 9 pushes the die casting.

[0039] When the driving member 7 drives the driving plate 73 to make the pushing plate 74 push the die casting from the die casting cavity 32 in the lower mold 3 to the die casting cavity 32 in the upper mold 2 through the ejector 9, the driving plate 73 moves to drive the first connecting frame 83 to move, and the first connecting frame 83 moves to pull the reverse rotating block 82 to rotate on the support rod 81, and the reverse rotating block 82 rotates to pull the second connecting frame 84 to move in the opposite direction of the first connecting frame 83, thereby causing the second connecting frame 84 to drive the fixing frame 85 to move to the opposite side of the driving plate 73. When the driving plate 73 makes the ejector rod 9 push the die-casting part against the die-casting part cavity 32 in the upper mold 2, the fixing frame 85 drives the lower mold 3 to move away from the upper mold 2, thereby separating the upper mold 2 from the lower mold 3. After the upper mold 2 is separated from the lower mold 3, the die-casting part can be clamped and unloaded by the unloading gripper 4 on the top of the upper mold 2, thereby realizing the material removal of the die-casting part. In this way, the die-casting part will not be deformed when the ejector rod 9 ejects the die-casting part.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold for preventing deformation of die-cast parts, comprising a processing table (1), an upper mold (2), a lower mold (3), a material discharge gripper (4), a molten metal injector (5) and an anti-deformation device (6), wherein the processing table (1) is placed horizontally on the ground, the upper mold (2) and the lower mold (3) are both arranged on the top of the processing table (1) and slide with the top of the processing table (1), a plurality of sliding rods (33) are provided on the upper mold (2) and the lower mold (3), the material discharge gripper (4) is arranged on the top of the upper mold (2), the molten metal injector (5) is arranged on the outer wall of the upper mold (2), and a molten metal flow path is provided in the upper mold (2), the anti-deformation device (6) is arranged on the lower mold (3) and slides with the lower mold (3), and is characterized in that: The anti-deformation device (6) includes a driving member (7), a transmission member (8) and a plurality of push rods (9), wherein the driving member (7) is fixedly arranged on the top of the processing table (1), the transmission member (8) is arranged on the driving member (7) and is rotatably matched with the driving member (7), and the plurality of push rods (9) are fixedly arranged on the driving member (7) and are slidably matched with the lower mold (3); the driving member (7) includes a support seat (71), a driving electric cylinder (72), a driving plate (73), a pushing plate (74) and two limiting rods (75), wherein the support seat (71) is arranged on the top of the processing table (1), the driving electric cylinder (72) is arranged on the top of the support seat (71) and the driving electric cylinder (72) is arranged on the top of the support seat (71). The stroke slider is slidably matched with the support seat (71), the driving plate (73) is arranged on the stroke slider of the driving electric cylinder (72), one end of the two limit rods (75) is symmetrically fixed on the driving plate (73) and slidably matched with the lower mold (3), the lower mold (3) is provided with a cavity (31), the pushing plate (74) is fixedly arranged on the other end of the two limit rods (75) and is 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, a plurality of the push rods (9) are unevenly distributed on the pushing plate (74) and correspond to the die-casting cavity (32) of the lower mold (3); the transmission The moving part (8) includes a support rod (81), a reverse rotation block (82), a first connecting frame (83), a second connecting frame (84) and a fixed frame (85), wherein the support rod (81) is fixedly arranged at the bottom of the support seat (71), the reverse rotation block (82) is arranged in a rhombus shape, the center point of the reverse rotation block (82) is arranged on the support rod (81) and is rotationally matched with the support rod (81), one end of the first connecting frame (83) is arranged on the driving plate (73) and is rotationally matched with the driving plate (73), the other end of the first connecting frame (83) is rotationally matched with one end of the rhombus of the reverse rotation block (82), and the fixed frame (85) is fixedly arranged on the outer side of the lower mold (3) On the wall, one end of the second connecting frame (84) is set on the fixed frame (85) and rotates with the fixed frame (85), and the other end of the second connecting frame (84) rotates with the other end of the diamond of the reverse rotating block (82); a plurality of the ejector rods (9) are sleeved with a buffer spring (91), and the two ends of the plurality of the buffer springs (91) are respectively connected to the push plate (74) and the inner wall of the cavity (31) of the lower mold (3). When the push plate (74) drives the plurality of ejector rods (9) to eject the die-casting in the die-casting cavity (32) of the lower mold (3), the buffer spring (91) prevents the push plate (74) from driving the ejector rods (9) to move out too quickly, thereby causing damage and deformation to the surface of the die-casting.

2. A die-casting mold for preventing deformation of die-cast parts according to claim 1, characterized in that: The processing table (1) is further provided with a moving device (10) and a water-based release agent spraying device (11). The moving device (10) is arranged on the top of the processing table (1) and is connected to the upper mold (2). The moving device (10) drives the upper mold (2) to move toward 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 the die-casting part. The water-based release agent spraying device (11) is fixedly arranged on the side wall of the processing table (1) and is located between the upper mold (2) and the lower mold (3).

3. The die-casting mold for preventing deformation of die-cast parts according to claim 2, characterized in that: The moving device (10) comprises a pushing electric cylinder (101), a moving plate (102) and four fixed rods (103), wherein the pushing electric cylinder (101) is arranged on the top of the processing table (1), the moving plate (102) is arranged on the travel slider of the pushing electric cylinder (101) and is slidably matched with the top of the processing table (1), one end of the four fixed rods (103) are symmetrically fixed on the moving plate (102), and the other ends of the four fixed rods (103) are connected to the upper mold (2).

4. The die-casting mold for preventing deformation of die-cast parts according to claim 3, characterized in that: The water-based release agent spraying device (11) comprises a fixed bracket (111), a transmission rod (112), a transmission gear (113) and a water-based release agent sprayer (114), wherein the fixed bracket (111) is fixedly arranged on the side wall of the processing table (1), the transmission rod (112) is arranged on the fixed bracket (111) and rotatably cooperates with the fixed bracket (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 located between the upper mold (2) and the lower mold (3), and a transmission rack (104) meshing with the transmission gear (113) is provided on the outer wall of the upper mold (2).

5. The die-casting mold for preventing deformation of die-cast parts according to claim 1, characterized in that: The contact and closing surfaces of the upper mold (2) and the lower mold (3) are both provided with anti-collision sealing strips (34). The anti-collision sealing strips (34) provide a better fit when the upper mold (2) and the lower mold (3) are closed for die-casting the die-casting part, thereby preventing a gap from forming between the upper mold (2) and the lower mold (3) to affect the die-casting effect of the die-casting part.

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