Casing die-casting die

Abstract

The utility model relates to the technical field of die-casting dies, and discloses a casing die-casting die which comprises an upper die and a lower die, the upper die and the lower die are provided with die grooves capable of forming a die-casting cavity, one side of the lower die is provided with a feeding pipe, and the feeding pipe is communicated with the die grooves in the lower die through a plurality of feeding terminals. A plurality of exhaust holes are formed in the end, away from the feeding terminal, of the lower die, the upper die is located in the center of one side of the upper fixing plate, and the lower die is located in the center of one side of the lower fixing plate; an ejection part is arranged on the lower fixing plate and comprises a plurality of first ejection rods and a plurality of second ejection rods, the first ejection rods are located in the circumferential direction of the mold groove of the lower mold, the second ejection rods are distributed corresponding to the feeding terminals and the exhaust holes, and the first ejection rods and the second ejection rods extend outwards in the direction perpendicular to the plane where the lower fixing plate is located; the first ejector rod and the second ejector rod can move in the extending direction of the first ejector rod and the second ejector rod. The utility model has the beneficial effect of less residual material residue.

Description

TECHNICAL FIELD

[0001] The utility model relates to die casting mould technology field, concretely relates to a casing die casting mould. BACKGROUND

[0002] With the continuous development of industrial production, metal parts are widely used in industrial production due to their high strength, easy forming and other characteristics, such as engine casing and other parts usually use the way of die casting to press the metal melt into a complex shape of metal mold, a kind of precision casting method, the prior art is generally using die casting machine to cooperate with die casting mould to carry out casting operation, the opening and closing of the mould and the injection of the metal melt are completed by the die casting machine, the metal melt is cooled and formed in the mould to form the preset shape, thereby completing the manufacture of parts.

[0003] For example, the patent document with publication number CN104785751A discloses a die casting mould, which belongs to the field of mould equipment and comprises a core pulling mechanism, the core pulling mechanism comprises a sliding block, and the cooperation gap between the sliding block and the core of the die casting mould is 0.40mm-0.61mm. The die casting mould of the technical scheme is not prone to metal liquid spatter during die casting and is not prone to mould seizure when the mould is opened, the quality of the die casting part is good, the service life of the mould is long, and maintenance time and maintenance cost are saved.

[0004] Although the above technical scheme can provide the service life of the die casting mould, during the die casting process of the die casting mould on the parts, the die casting parts are usually closely attached in the mould, and when the shape of the mould is complex and has more complex lines, the connection between the parts and the mould will become more closely, so that the demoulding difficulty of the parts is large after die casting is completed, and when the mould has a complex shape, the parts are prone to residual in the mould during demoulding, and when the residual in the mould cannot be cleaned in time, the residual accumulates in the mould, affecting the normal operation of the next die casting process. UTILITY MODEL CONTENTS

[0005] The utility model intends to provide a casing die casting mould to solve the technical problems of large demoulding difficulty of parts and easy residual of parts in the mould during demoulding in the prior art.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a casing die casting mould, including upper mould and lower mould, the upper mould with the lower mould is equipped with the die casting cavity that can form mould groove, one side of the lower mould is equipped with feed pipe, the feed pipe passes through a plurality of feed terminals with the mould groove on the lower mould intercommunication, the lower mould is equipped with a plurality of exhaust holes away from the feed terminal one end, still include upper fixed plate and lower fixed plate, the upper mould is located the center of one side of the upper fixed plate, the lower mould is located the center of one side of the lower fixed plate, the lower fixed plate is equipped with the material department, the material department includes a plurality of first material department and a plurality of second material department, a plurality of first material department is located the mould groove's circumference of the lower mould, a plurality of second material department with the feed terminal with the exhaust hole corresponding distribution, the first material department with the second material department extends outward along the direction of being perpendicular to the plane of the lower fixed plate, the first material department with the second material department can along the direction of being extended of itself moves.

[0007] The principle and advantages of the present scheme are as follows: when die casting the casing, the upper mold and the lower mold are spliced together under the driving of the upper fixed plate and the lower fixed plate, forming a die casting cavity between the upper mold and the lower mold. Pouring the raw material melt into the die casting cavity, after the raw material melt cools and solidifies in the die casting cavity, the upper mold and the lower mold are separated under the driving of the upper fixed plate and the lower fixed plate, and the casing and residual material in the mold are ejected through the first ejection rod and the second ejection rod in the ejection part, completing the demolding of the die casting casing and the cleaning of the residual material in the mold.

[0008] In the present scheme, when die casting the casing, the first ejection rod in the ejection part can eject the casing formed by die casting in the mold, facilitating the stripping of the casing after die casting. At the same time, the second ejection rod is provided in the lower mold to perform ejection operation on the position where residual material is likely to exist in the lower mold, so that the residual material in the lower mold can be ejected under the action of the second ejection rod when the casing formed by die casting is taken out, facilitating the cleaning of the residual material in the lower mold, avoiding the accumulation of residual material in the lower mold, causing the lower mold to be blocked, affecting the die casting effect of the casing, ensuring the cleanliness of the mold after die casting, and reducing the cleaning difficulty of the mold.

[0009] Preferably, as an improvement, a plurality of connecting columns are provided between the upper fixed plate and the lower fixed plate, and the connecting columns are uniformly distributed along the circumference of the lower fixed plate on the opposite faces of the upper fixed plate and the lower fixed plate. When the upper mold and the lower mold are connected or separated, they can be guided under the action of the connecting columns, ensuring the accuracy of the connection between the upper mold and the lower mold.

[0010] Preferably, as an improvement, the lower fixed plate is provided with a material pushing plate away from one side of the lower mold, the plane of the material pushing plate is parallel to the plane of the lower fixed plate, the material pushing plate can move towards or away from the lower fixed plate, and the material pushing plate is used to push the first material pushing rod and the second material pushing rod to move. The pushing operation of the first material pushing rod and the second material pushing rod is completed by the material pushing plate, which ensures the consistency of the pressure applied by each material pushing rod during the pushing operation, and avoids uneven stress on the machine shell during the pushing process, which causes damage to the machine shell.

[0011] Preferably, as an improvement, the first material pushing rod and the second material pushing rod are provided with elastic members at one end of the material pushing plate. By arranging elastic members between the first material pushing rod, the second material pushing rod and the material pushing plate, the material pushing plate can absorb energy under the buffering action of the elastic members when pushing the first material pushing rod and the second material pushing rod to move, avoiding the rigid connection between the first material pushing rod, the second material pushing rod and the material pushing plate during the pushing process, which causes the pressure on the machine shell to change too much in the moment of pushing and moving, causing the machine shell to be easily damaged.

[0012] Preferably, as an improvement, the lower fixed plate is provided with two connecting plates away from one side of the lower mold, the two connecting plates are located on both sides of the material pushing plate, the connecting plate is provided with a limiting protrusion on the side close to the material pushing plate, and the limiting protrusion is located at one end of the connecting plate away from the lower fixed plate. By arranging the limiting protrusion on the connecting plate, the travel of the material pushing plate on one side of the lower fixed plate can be limited, ensuring the accuracy of the position of the material pushing plate during the pushing operation.

[0013] Preferably, as an improvement, the gap between the limiting protrusions on the two connecting plates is smaller than the width of the material pushing plate.

[0014] Preferably, as an improvement, the lower fixed plate is provided with a limiting rod on the side close to the material pushing plate, the limiting rod extends outward in a direction perpendicular to the plane of the lower fixed plate, and the material pushing plate is in sliding connection with the limiting rod. By arranging the limiting rod in sliding connection with the material pushing plate, the stability of the material pushing plate during movement is ensured, avoiding the deviation of the material pushing plate during the pushing process, which affects the normal operation of the pushing.

[0015] Preferably, as an improvement, the material pushing part further comprises a plurality of third material pushing rods, the plurality of third material pushing rods are uniformly distributed along the circumference of the lower fixed plate, and the third material pushing rods are spaced apart from the lower mold. By arranging the third material pushing rod to push the upper fixed plate, the upper fixed plate can be supported by the third material pushing rod during demolding, avoiding the movement of the upper fixed plate towards the lower mold during demolding, which causes damage to the die-cast machine shell. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the shell die casting die in the embodiment of the utility model.

[0017] Figure 2 It is the structure schematic diagram of the upper die in the embodiment of the utility model.

[0018] Figure 3 It is the structure schematic diagram of the lower die in the embodiment of the utility model.

[0019] Figure 4 It is the side view of the shell die casting die in the embodiment of the utility model. Specific implementation

[0020] The following is further explained in detail by specific implementation:

[0021] The reference signs in the drawings of the specification include: upper die 1, upper fixed plate 101, upper fixed groove 102, lower die 2, lower fixed plate 201, connecting plate 202, lower fixed groove 203, limiting protrusion 204, limiting rod 205, connecting column 3, feeding pipe 4, feeding terminal 401, exhaust groove 5, material ejecting part 6, first material ejecting rod 601, second material ejecting rod 602, material ejecting plate 603, third material ejecting rod 604.

[0022] As shown in the accompanying Figure 1 and the accompanying Figure 2 , a shell die casting die, comprising upper die 1 and lower die 2, wherein upper die 1 and lower die 2 are distributed towards each other, and die grooves are respectively arranged at the corresponding positions of upper die 1 and lower die 2, the die grooves on upper die 1 and lower die 2 can be folded to form a die casting cavity, and the die casting cavity is used for die casting forming of parts.

[0023] One end of upper die 1 away from lower die 2 is provided with upper fixed plate 101, and upper die 1 is located at the center of one side of upper fixed plate 101, and upper fixed plate 101 and upper die 1 are fixedly connected by integral molding or welding, and upper fixed plate 101 is used for fixing the position of upper die 1. Upper fixed grooves 102 are arranged on both sides of upper fixed plate 101, and upper fixed grooves 102 are parallelly distributed on both sides of upper fixed plate 101, and upper fixed grooves 102 penetrate through both sides of upper fixed plate 101 along the width direction perpendicular to upper fixed plate 101, and upper fixed grooves 102 are used for clamping connection with external equipment, wherein the external equipment can be a die casting production equipment such as a production device or a production line, and the specific structure of the external equipment is prior art, which will not be described here.

[0024] A lower fixed plate 201 is arranged at the end of the lower die 2 away from the upper die 1, the lower die 2 is located at the center of one side of the lower fixed plate 201, and the lower die 2 is fixedly connected with the lower fixed plate 201 by welding or one-piece forming. A connecting plate 202 is arranged at the side of the lower fixed plate 201 away from the lower die 2, and the connecting plate 202 and the lower fixed plate 201 are fixedly connected by bolts. A lower fixed groove 203 is formed in the side surface of the connecting plate 202, and the lower fixed groove 203 penetrates through both sides of the connecting plate 202 along the vertical direction of the height of the connecting plate 202. The connecting plate 202 is provided with two plates, and the two connecting plates 202 are distributed in parallel at both sides of the bottom of the lower fixed groove 203, and the lower fixed groove 203 is arranged on the opposite sides of the connecting plate 202. The connecting plate 202 is used for clamping connection with external equipment through the lower fixed groove 203.

[0025] A plurality of connecting columns 3 are arranged between the upper fixed plate 101 and the lower fixed plate 201, and the plurality of connecting columns 3 are uniformly distributed along the circumferential direction of the lower fixed plate 201 on the opposite surfaces of the upper fixed plate 101 and the lower fixed plate 201, and the connecting columns 3 are distributed at intervals between the upper fixed plate 101 and the upper die 1. One end of the connecting column 3 is clamped and connected with the upper fixed plate 101, and the other end extends outwardly away from the upper fixed plate 101. A connecting hole is formed at the corresponding position of the lower fixed plate 201 and each connecting column 3, and the connecting column 3 can be arranged in the connecting hole. The upper fixed plate 101 and the lower fixed plate 201 are connected through the connecting column 3 and the connecting hole. When the upper die 1 and the lower die 2 are connected or separated, they can be guided under the action of the connecting column 3, thereby ensuring the accuracy of the connection between the upper die 1 and the lower die 2.

[0026] A feeding pipe 4 is communicated with one side of the lower die 2, one end of the feeding pipe 4 is communicated with the die casting cavity through a plurality of feeding terminals 401, the plurality of feeding terminals 401 are uniformly distributed on one side of the lower die 2, and the other end of the feeding pipe 4 extends outwardly along the direction perpendicular to the plane of the lower die 2. A feeding port is formed at the corresponding position of the upper fixed plate 101 and the feeding pipe 4, and the feeding pipe 4 penetrates through the upper fixed plate 101 through the feeding port.

[0027] A plurality of exhaust grooves 5 are arranged at the lower die 2 away from the feeding terminals 401, and the exhaust grooves 5 extend from the center of the lower die 2 to the edge of the lower die 2 on the side of the lower die 2 facing the upper die 1. The exhaust grooves 5 are used for exhausting air in the die casting cavity.

[0028] As shown in the accompanying Figure 3 As shown in the accompanying Figure 4As shown, the lower fixed plate 201 is provided with a material ejection portion 6, which includes a plurality of first material ejection rods 601 and a plurality of second material ejection rods 602. The plurality of first material ejection rods 601 and the plurality of second material ejection rods 602 are distributed on the lower fixed plate 201 at intervals. Specifically, the plurality of first material ejection rods 601 are uniformly distributed along the circumference of the lower mold 2. Specifically, in this embodiment, the lower mold 2 is a convex mold, and the first material ejection rods 601 are located on the side of the lower mold 2 that protrudes. The plurality of second material ejection rods 602 are distributed corresponding to the plurality of exhaust grooves 5 and the plurality of feed terminals 401, that is, each exhaust groove 5 and feed terminal 401 is provided with a corresponding second material ejection rod 602. The first material ejection rods 601 and the second material ejection rods 602 extend on the lower fixed plate 201 in a direction away from the lower mold 2 perpendicular to the plane in which the lower mold 2 is located. Specifically, at the corresponding positions of the lower mold 2, the lower fixed plate 201, the first material ejection rods 601, and the second material ejection rods 602, openings are provided, the first material ejection rods 601 or the second material ejection rods 602 are arranged in the openings, and the first material ejection rods 601 and the second material ejection rods 602 can move in the direction of their extension. By arranging the first material ejection rods 601 on the side of the lower mold 2, the first material ejection rods 601 can eject the circumference of the shell after die casting, facilitating the separation of the shell from the lower mold 2 and improving the convenience of separating the shell from the lower mold 2 after die casting. By arranging the second material ejection rods 602 at the feed port and the exhaust port, the areas where the feed port and the exhaust port are prone to accumulate residual materials during the die casting process can be stripped of waste materials by the second material ejection rods 602, reducing the accumulation of residual materials in the lower mold 2.

[0029] A material ejection plate 603 is arranged on the side of the lower fixed plate 201 away from the lower mold 2. The plane of the material ejection plate 603 is parallel to the plane of the lower fixed plate 201. The material ejection plate 603 is distributed at intervals with the lower fixed plate 201. The material ejection plate 603 can move towards or away from the lower fixed plate 201. The ends of the first material ejection rods 601 and the second material ejection rods 602 away from the lower mold 2 are connected to the material ejection plate 603. The material ejection plate 603 is used to push the first material ejection rods 601 and the second material ejection rods 602 to move. Specifically, the material ejection plate 603 can be driven by a power device such as a pneumatic cylinder or an oil cylinder on the die casting equipment to move the material ejection plate 603. The specific content of the movement of the material ejection plate 603 is a prior art, which will not be described here. The first material ejection rods 601 and the second material ejection rods 602 are pushed by the material ejection plate 603 to complete the ejection operation, ensuring the consistency of the pressure applied by each material ejection rod during ejection, and avoiding uneven stress on the shell during ejection, which may cause damage to the shell.

[0030] The first and second material pushing rods 601 and 602 are provided with elastic members at one end of the material pushing plate 603, that is, one end of the first and second material pushing rods 601 and 602 is connected with the material pushing plate 603 through the elastic members, and the elastic members are used for buffering the power between the material pushing plate 603 and the first and second material pushing rods 601 and 602. In this embodiment, the elastic members are selected as compression springs, and in other embodiments, other elastic members can also be selected. By arranging the elastic members between the first and second material pushing rods 601 and 602 and the material pushing plate 603, the material pushing plate 603 can absorb energy under the buffering action of the elastic members when pushing the first and second material pushing rods 601 and 602 to move, avoiding the rigid connection between the first and second material pushing rods 601 and 602 and the material pushing plate during the material pushing process, which causes the pressure change on the shell to be too large in the instant of material pushing movement, and causes the shell to be easily damaged.

[0031] The limiting protrusions 204 are integrally formed on the connecting plates 202, are located on the side of the connecting plates 202 close to the material pushing plate 603 away from the lower fixed plate 201, and extend outward away from the connecting plates 202 in a direction parallel to the plane where the material pushing plate 603 is located. In this embodiment, the side of the two connecting plates 202 close to the material pushing plate 603 is provided with the limiting protrusions 204, and the gap between the limiting protrusions 204 of the two connecting plates 202 is smaller than the width of the material pushing plate 603. By arranging the limiting protrusions 204 on the connecting plates 202, the movement stroke of the material pushing plate 603 on the side of the lower fixed plate 201 can be limited, so as to ensure the accuracy of the position of the material pushing plate 603 during the material pushing movement.

[0032] The limiting rods 205 are arranged on the side of the lower fixed plate 201 close to the material pushing plate 603, are located at both ends of the lower fixed plate 201 away from the connecting plates 202, one end of the limiting rod 205 is connected with the lower fixed plate 201 through welding or bolt fixing, and the other end extends outward along a direction perpendicular to the plane where the lower fixed plate 201 is located. The limiting grooves are arranged at the corresponding positions of the material pushing plate 603 and the limiting rod 205, the extending direction of the limiting grooves is consistent with the extending direction of the limiting rod 205, and the limiting rod 205 penetrates through the two sides of the material pushing plate. The two sides of the material pushing plate 603 are slidably connected to the limiting rod 205 through the limiting grooves, and the limiting rod 205 is used for limiting the movement of the material pushing plate 603. By arranging the limiting rod 205 and the material pushing plate 603 in a sliding connection, the stability of the material pushing plate 603 during movement is improved, and the deviation of the material pushing plate 603 during the material pushing process is avoided, so as to affect the normal material pushing.

[0033] The top feeding part 6 further comprises a plurality of third top feeding rods 604, which are uniformly distributed along the circumference of the lower fixed plate 201 and are spaced apart between the lower mold 2. The extension direction of the central axis of the third top feeding rod 604 is consistent with the extension direction of the central axis of the first top feeding rod 601 and the second top feeding rod 602. One end of the third top feeding rod 604 penetrates through the lower fixed plate 201, and the other end of the third top feeding rod 604 is fixedly connected with the top feeding plate 603 through bolts. The third top feeding rod 604 is used to push the upper fixed plate 101 to move away from the lower fixed plate 201. By arranging the third top feeding rod 604 to top feed the upper fixed plate 101, the upper fixed plate 101 can be supported by the third top feeding rod 604 during demolding, so as to avoid the movement of the upper fixed plate 101 to the lower mold 2 during demolding, thereby preventing the damage of the die-cast shell.

[0034] The specific implementation process is as follows:

[0035] When the shell is die-cast, the upper mold 1 and the lower mold 2 are spliced together under the driving of the upper fixed plate 101 and the lower fixed plate 201, so that a die-casting cavity is formed between the upper mold 1 and the lower mold 2. The raw material melt is poured into the die-casting cavity through the pouring pipe. After the raw material melt is cooled and solidified in the die-casting cavity, the upper mold 1 and the lower mold 2 are separated under the driving of the upper fixed plate 101 and the lower fixed plate 201, and the shell and the residual material in the mold are pushed out through the top feeding rod in the top feeding part 6, thereby completing the demolding of the die-cast shell and the cleaning of the residual material in the mold.

[0036] Compared with the prior art, in the present application, when the shell is die-cast, the first top feeding rod 601 in the top feeding part 6 can push out the die-cast shell in the mold, which facilitates the stripping of the die-cast shell. At the same time, the second top feeding rod 602 is arranged in the lower mold 2 to perform top feeding operation on the position where residual material is prone to exist in the lower mold 2, so that the residual material in the lower mold 2 can be pushed out under the action of the second top feeding rod 602 when the die-cast shell is taken out, which facilitates the cleaning of the residual material in the lower mold 2, avoids the accumulation of residual material in the lower mold 2, prevents the lower mold 2 from being blocked, and affects the die-casting effect of the shell, and ensures the cleanliness of the die-cast mold, thereby reducing the cleaning difficulty of the mold.

[0037] It should be noted that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of the claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A die-casting mold for a cabinet, comprising an upper mold and a lower mold, the upper mold and the lower mold being provided with a mold groove capable of forming a die-casting cavity, one side of the lower mold being provided with a feeding pipe, the feeding pipe being communicated with the mold groove on the lower mold through a plurality of feeding terminals, and the end of the lower mold away from the feeding terminals being provided with a plurality of exhaust holes, characterized in that: Further comprising an upper fixed plate and a lower fixed plate, the upper die is located at the center of one side of the upper fixed plate, and the lower die is located at the center of one side of the lower fixed plate; The upper fixed plate is provided with a material pushing part, the material pushing part comprises a plurality of first material pushing rods and a plurality of second material pushing rods, a plurality of first material pushing rods are located in the circumferential direction of the mold groove of the lower die, a plurality of second material pushing rods are distributed corresponding to the feeding terminal and the exhaust hole, the first material pushing rod and the second material pushing rod extend outward along the direction perpendicular to the plane of the lower fixed plate, and the first material pushing rod and the second material pushing rod can move along the extension direction thereof.

2. A housing die-cast mold according to claim 1, characterized in that: A plurality of connecting columns are arranged between the upper fixed plate and the lower fixed plate, and the plurality of connecting columns are uniformly distributed along the circumferential direction of the lower fixed plate on the opposite surfaces of the upper fixed plate and the lower fixed plate.

3. A housing die-cast mold according to claim 1, characterized in that: The side of the lower fixed plate away from the lower die is provided with a material pushing plate, the plane of the material pushing plate is parallel to the plane of the lower fixed plate, the material pushing plate can move along the direction close to or away from the lower fixed plate, and the material pushing plate is used for pushing the first material pushing rod and the second material pushing rod to move.

4. A housing die-cast mould according to claim 3, characterised in that: The first material pushing rod and the second material pushing rod are provided with elastic members at one end of the material pushing plate.

5. A housing die-cast mould according to claim 3, characterised in that: The side of the lower fixed plate away from the lower die is provided with two connecting plates, and the two connecting plates are located on both sides of the material pushing plate, the side of the connecting plate close to the material pushing plate is provided with a limiting protrusion, and the limiting protrusion is located at one end of the connecting plate away from the lower fixed plate.

6. A housing die-cast mould according to claim 5, characterised in that: The gap between the limiting protrusions on the two connecting plates is smaller than the width of the material pushing plate.

7. A housing die-cast mould according to claim 5, characterised in that: The side of the lower fixed plate close to the material pushing plate is provided with a limiting rod, the limiting rod extends outward along the direction perpendicular to the plane of the lower fixed plate, and the material pushing plate and the limiting rod are in sliding connection.

8. A housing die-cast mold according to claim 1, characterized in that: The material pushing part further comprises a plurality of third material pushing rods, the plurality of third material pushing rods are uniformly distributed along the circumferential direction of the lower fixed plate, and the third material pushing rods are spaced apart from the lower die.

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