CN113618041A - Die for die-casting automobile gearbox shell - Google Patents
Die for die-casting automobile gearbox shell Download PDFInfo
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- CN113618041A CN113618041A CN202110800188.8A CN202110800188A CN113618041A CN 113618041 A CN113618041 A CN 113618041A CN 202110800188 A CN202110800188 A CN 202110800188A CN 113618041 A CN113618041 A CN 113618041A
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- 238000004512 die casting Methods 0.000 title claims abstract description 39
- 230000009975 flexible effect Effects 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 description 8
- 238000005086 pumping Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
- B22D17/145—Venting means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/26—Mechanisms or devices for locking or opening dies
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Abstract
The invention discloses a die for die-casting a shell of an automobile gearbox, wherein an exhaust structure is arranged on the die, when the gas in a cavity and an exhaust cavity needs to be exhausted, a vacuum air pump is pumped, negative pressure is formed in the cavity and the exhaust cavity due to the action of the vacuum air pump, so that the gas at the corner in the cavity is also exhausted, no curling gas is formed, the effect of completely exhausting the gas in the cavity is achieved, bubbles are prevented from being formed on a die-casting workpiece, and the quality of the workpiece is improved; the cylinder body of the telescopic assembly of the mold core pulling structure is directly fixedly connected with the mold, and the piston rod of the telescopic assembly is arranged at one end, far away from the mold, of the cylinder body, so that the telescopic movable space of the piston rod is arranged on the outer side of the whole mold, the whole mold is in a mold closing state, compared with the existing mold, the movable space is reduced, the size of the mold is smaller, and the mold is convenient to carry.
Description
Technical Field
The invention relates to the field of dies, in particular to a die for die-casting a shell of an automobile gearbox.
Background
The surface structure of the automobile gearbox shell is complex, a plurality of core pulling structures are required to be adopted for core pulling treatment, the surface of the shell is uneven, the inner wall surface of a cavity of a die for die-casting the automobile gearbox shell is uneven, more corners exist, and therefore when die-casting is conducted, air entrainment is easy to occur at the corners to cause more air holes in products, and the quality of the formed products is poor.
And, motor transmission casing is bulky, and consequently the mould volume that is used for die-casting shaping is also great, has more structure of loosing core moreover, and current structure of loosing core is usually including fixing the connecting seat at the mould surface, fixing the pneumatic cylinder on the connecting seat, the body of loosing core of connecting at the tailpiece of the piston rod of pneumatic cylinder, and the body of loosing core and mould sliding connection, wherein, need form certain activity space that is used for the piston rod to stretch out and draw back between the cylinder body of pneumatic cylinder and the mould, and this space is usually formed by the connecting seat inside that is the U style of calligraphy. Therefore, in the current core pulling structure with the large core pulling distance, the movable space is arranged between the cylinder body of the hydraulic cylinder and the mold after the core pulling structure is installed on the mold, and the large movable space is needed, so that the whole mold occupies a large space, and the whole mold is inconvenient to carry.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a die for die-casting an automobile transmission shell, and aims to solve the problems that the existing die is easy to generate air entrainment when a workpiece with a complex structure is produced and is large in volume when the workpiece is transported.
In order to achieve the purpose, the invention adopts the following technical scheme:
a die for die-casting a shell of an automobile gearbox comprises a movable die and a fixed die, wherein a cavity is arranged between the movable die and the fixed die, one side of the cavity is connected with a pouring runner, the pouring runner is arranged on the fixed die, one side of the cavity, far away from the pouring runner, is communicated with an exhaust cavity, and the exhaust cavity is connected with an exhaust structure;
still including the structure of loosing core, the structure of loosing core include with the flexible subassembly of the lateral surface fixed connection of movable mould, flexible subassembly includes cylinder body and piston rod, cylinder body one end is fixed on the movable mould, the inside sliding connection of one end and the cylinder body of piston rod, the other end of piston rod stretches out the one end that the movable mould was kept away from to the cylinder body, the one end that the cylinder body was being kept away from to the piston rod is connected with the connecting rod, connecting rod one end is connected with flexible end of flexible subassembly, and the other end just is connected with the connecting plate towards the movable mould, is connected with the slider on the connecting plate, is equipped with the spout on the movable mould, spout and movable mould side and die cavity intercommunication, slider and spout sliding connection, and the slider is connected with the core body of loosing core at a terminal surface of keeping away from the connecting plate.
The die for die-casting the automobile gearbox shell is characterized in that one end, far away from the movable die, of the piston rod and the connecting plate are both connected with travel switches, and one end, far away from the movable die, of the cylinder body is fixed with a bump capable of triggering a travel switch signal.
The die for die-casting the automobile gearbox shell is characterized in that two telescopic assemblies are arranged, and two ends of the connecting plate are respectively in sliding connection with the two telescopic assemblies.
In the die for die-casting the automobile gearbox shell, the exhaust structure comprises a valve rod through hole which is arranged on the movable die or the fixed die and is communicated with the exhaust cavity, a valve rod is connected in the valve rod through hole in a sliding manner, one end, far away from the exhaust cavity, of the valve rod is connected with a valve body for driving the valve rod to move, and the valve body is fixed on the outer side of the movable die; the valve rod through hole is close to exhaust chamber one end and is equipped with exhaust passage, and exhaust passage one end and valve rod through hole intercommunication, the other end connect gradually filter and evacuation air pump through the pipeline, and the valve body can drive the valve rod and block up the valve rod through hole between exhaust passage and the exhaust chamber.
In the die for die-casting the automobile gearbox shell, a conical groove is formed in the end part, close to one end of the exhaust cavity, of the valve rod through hole, and a convex ring with the outer surface matched with the inner wall surface of the conical groove is arranged on the valve rod; the diameter of the valve rod through hole between the exhaust channel and the exhaust cavity is larger than that of the valve rod.
In the die for die-casting the automobile gearbox shell, the diameter of the valve rod through hole between the exhaust channel and the exhaust cavity is equal to the diameter of one end, close to the exhaust cavity, of the valve rod.
In the die for die-casting the automobile gearbox shell, the valve body is a telescopic cylinder.
The die for die-casting the automobile gearbox shell is characterized in that a guide strip is fixedly connected to the side surface of the fixed die through a screw, one end of the guide strip is fixedly arranged on the fixed die, a guide groove is formed in the side surface of the movable die, first wear-resistant blocks are fixedly connected to the two side surfaces of the guide groove through screws, and the guide strip is slidably connected with the first wear-resistant blocks.
The die for die-casting the automobile gearbox shell is characterized in that a sunken platform is fixedly arranged on one end face of the movable die facing the fixed die, a second wear-resistant block is fixed on the side wall of the sunken platform through screws, a raised platform corresponding to the sunken platform is arranged on one side of the fixed die facing the movable die, and a third wear-resistant block capable of being abutted against the second wear-resistant block is fixed on the side wall of the raised platform through screws.
Has the advantages that: through set up exhaust structure on the mould, exhaust structure includes the valve rod through-hole with the exhaust chamber intercommunication of mould, sliding connection has the valve rod in the valve rod through-hole, the valve rod is being kept away from exhaust chamber one end and is being connected with the valve body, the valve rod through-hole is close to exhaust chamber one end and is equipped with exhaust passage, exhaust passage one end and valve rod through-hole intercommunication, the other end has connected gradually filter and evacuation air pump through the pipeline, when needing the gas in discharge chamber and the exhaust chamber, the evacuation air pump, because the effect of evacuation air pump can make the die cavity and the intracavity of exhausting form the negative pressure, consequently, the gas that has corner in the die cavity also can be discharged, can not form the roll up gas, reach the thorough clean effect of discharging of the gas in the die cavity, there is the bubble on the work piece of avoiding die-casting shaping, improve the quality of work piece.
The cylinder body of the telescopic assembly of the mold core pulling structure is directly fixedly connected with the mold, and the piston rod of the telescopic assembly is arranged at one end, far away from the mold, of the cylinder body, so that the telescopic movable space of the piston rod is arranged on the outer side of the whole mold, the whole mold is in a mold closing state, compared with the existing mold, the movable space is reduced, the size of the mold is smaller, and the mold is convenient to carry.
Through setting up the wear-resisting piece of gib block and first wear-resisting piece of two sets of differences of wear-resisting piece of second and the wear-resisting piece of third, improve the precision of movable mould and cover half when the compound die to gib block, first wear-resisting piece, the wear-resisting piece of second and the wear-resisting piece of third pass through the fix with screw in the movable mould or the cover half outside that correspond, when having wearing and tearing, convenient the change.
Drawings
Fig. 1 is a schematic view of the structure of a mold.
FIG. 2 is a schematic structural diagram of a stationary mold.
FIG. 3 is a schematic structural diagram of the movable mold.
Fig. 4 is a partial enlarged view of fig. 3 at a.
Fig. 5 is a front view of the mold.
Fig. 6 is a partial enlarged view of fig. 5 at B.
Fig. 7 is a partial enlarged view of fig. 6 at C.
Description of the main element symbols: 1-fixed die, 1.1-convex platform, 1.2-third wear-resistant block, 1.3-guide strip, 1.4-die cavity, 2-movable die, 2.1-concave platform, 2.2-first wear-resistant block, 2.3-guide groove, 2.4-second wear-resistant block, 3-loose core structure, 3.1-slide block, 3.2-telescopic component, 3.11-cylinder body, 3.12-piston rod, 3.3-connecting rod, 3.4-connecting plate, 3.5-loose core body, 3.6-travel switch, 3.7-lug, 3.8-connecting block, 4-exhaust structure, 4.3-exhaust cavity, 4.2-valve rod, 4.1-valve body, 4.4-exhaust channel, 4.5-filter, 4.6-vacuum air pump, 4.8-conical groove and 4.7-convex ring.
Detailed Description
The invention provides a die for die-casting a shell of an automobile gearbox, and in order to make the purpose, the technical scheme and the effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
Referring to fig. 1, 3, 5 and 6, in fig. 3, only one core pulling structure capable of reducing the carrying volume according to the present application is shown, and in practical application, other core pulling structures may be replaced by core pulling structures capable of reducing the carrying volume.
The utility model provides a mould for die-casting motor transmission casing, includes movable mould 2 and cover half 1, be equipped with die cavity 1.4 between movable mould 2 and the cover half 1, die cavity 1.4 one side is connected with the pouring runner, and the pouring runner is established on cover half 1, and die cavity 1.4 has exhaust chamber 4.3 in the one side intercommunication of keeping away from the pouring runner, is connected with exhaust structure 4 on the exhaust chamber 4.3. Specifically, a solution for pouring the work piece enters into die cavity 1.4 from the pouring runner, and the gas of placing in die cavity 1.4 originally is then driven to the chamber 4.3 that exhausts by the solution in for can die-casting out qualified work piece in the die cavity 1.4, this application is equipped with exhaust structure 4 on the chamber 4.3 that exhausts, makes the gas discharge in the die cavity 1.4 more smooth and easy, thorough, avoids die-casting fashioned work piece to have the bubble.
Referring to fig. 3 and 4, the mold for die-casting the automobile transmission case further includes a core-pulling structure 3, the core pulling structure 3 comprises a telescopic component 3.2 fixedly connected with the outer side surface of the movable die 2, the telescopic component 3.2 comprises a cylinder body 3.11 and a piston rod 3.12, one end of the cylinder body 3.11 is fixed on the movable mold 2, one end of the piston rod 3.12 is connected with the inside of the cylinder body 3.11 in a sliding way, the other end of the piston rod 3.12 extends out of one end of the cylinder body 3.11 far away from the movable mold 2, the one end of piston rod 3.12 keeping away from cylinder body 3.11 is connected with connecting rod 3.3, connecting rod 3.3 one end is connected with flexible end of flexible subassembly 3.2, and the other end just is connected with connecting plate 3.4 towards movable mould 2, is connected with slider 3.1 on the connecting plate 3.4, is equipped with the spout on the movable mould 2, spout and 2 sides of movable mould and die cavity 1.4 intercommunication, slider 3.1 and spout sliding connection, and slider 3.1 is connected with and takes out core body 3.5 at the terminal surface of keeping away from connecting plate 3.4.
In the foregoing, cylinder body 3.11 of telescopic component 3.2 is direct and mould fixed connection, keep away from one end tip fixed connection connecting rod 3.3 of cylinder body 3.11 at telescopic component 3.2's piston rod 3.12, the outside of cylinder body 3.11 is arranged in to connecting rod 3.3, connecting rod 3.3 keeps away from one end fixed connection connecting plate 3.4 of being connected with piston rod 3.12, and slider 3.1 is connected on the side that connecting plate 3.4 is close to the mould, loose core body 3.5 is fixed on slider 3.1, therefore, when telescopic component 3.2 drive piston rod 3.12 is flexible, drive connecting plate 3.4 and remove, and then realize that loose core body 3.5 removes on the mould, realize the function of loosing core.
Wherein, because cylinder body 3.11 of flexible subassembly 3.2 is direct and mould fixed connection, the piston rod 3.12 of flexible subassembly 3.2 is established in the one end that the mould was kept away from to cylinder body 3.11, consequently, is used for the flexible activity space of piston rod 3.12 to arrange the outside of whole mould in for when whole mould was in the compound die state, compare with current mould, had lacked the activity space, make the volume of mould littleer, convenient transport. When the mold is normally used, enough moving space is left outside the mold.
In the above, in order to facilitate the connection between the connecting rod 3.3 and the piston rod 3.12, the connecting block 3.8 is fixedly connected to the end face of the piston rod 3.12 far away from one end of the cylinder body 3.11, one end of the connecting rod 3.3 is fixed on the connecting block 3.8, and a certain distance is kept between the connecting rod 3.3 and the cylinder body 3.11 through the arrangement of the connecting block 3.8, so that the connecting rod 3.3 cannot collide with the cylinder body 3.11 when the piston rod 3.12 of the telescopic assembly 3.2 is telescopic.
Specifically, the switching of the working state of the telescopic assembly 3.2 needs to be controlled by a corresponding signal, so that the telescopic assembly can be automatically controlled, and the working state is more accurate. The end, far away from the die, of the piston rod 3.12 and the connecting plate 3.4 are both connected with a travel switch 3.6, a protruding block 3.7 which can trigger a signal of the travel switch 3.6 is fixed at the end, far away from the die, of the cylinder body 3.11, the telescopic assembly 3.2 drives the core body 3.5 to be drawn away from the die-cast workpiece, namely when the piston rod 3.12 moves from a contraction state to an extension state, the travel switch 3.6 on the connecting plate 3.4 is in contact with the protruding block 3.7, the travel switch 3.6 is triggered and sends out a signal that the core body 3.5 is completely drawn out of the workpiece, and at the moment, the telescopic assembly 3.2 is controlled to stop moving according to the signal; after the die assembly of the die is completed, the telescopic component 3.2 drives the piston rod 3.12 to move from the extending state to the contracting state, namely, the core pulling body 3.5 resets, when the travel switch 3.6 at one end of the piston rod 3.12, which is far away from the die, is in contact with the bump 3.7, a signal of the travel switch 3.6 is triggered, the telescopic component 3.2 is controlled to stop moving according to the signal, and the core pulling body 3.5 resets.
In a preferred embodiment, to improve the stability of the drawer body 3.5 during movement, the connecting plate 3.4 is slidably connected to the cylinder 3.11 of the telescopic assembly 3.2, so that the outer surface of the cylinder 3.11 of the telescopic assembly 3.2 forms a guiding structure for the connecting plate 3.4, thereby improving the stability of the connecting plate 3.4 during movement and further improving the stability of the drawer body 3.5 during movement.
In a preferred embodiment, the number of the telescopic assemblies 3.2 is two, two ends of the connecting plate 3.4 are respectively connected with the two telescopic assemblies 3.2 in a sliding manner, the sliding block 3.1 is connected to the middle of the connecting plate 3.4, and the stability of the connecting plate 3.4 during moving can be improved through the arrangement of the two telescopic assemblies 3.2.
Preferably, the telescopic member 3.2 is a pneumatic or hydraulic cylinder.
Referring to fig. 5, 6 and 7, the exhaust structure 4 comprises a valve rod through hole communicated with an exhaust cavity 4.3 of the mold, a valve rod 4.2 is connected in the valve rod through hole in a sliding manner, one end of the valve rod 4.2, which is far away from the exhaust cavity 4.3, is connected with a valve body 4.1 for driving the valve rod 4.2 to move, and the valve body 4.1 is fixed on the outer side of the mold; the valve rod through hole is close to exhaust chamber 4.3 one end and is equipped with exhaust passage 4.4, and exhaust passage 4.4 one end and valve rod through hole intercommunication, and the other end connects gradually filter 4.5 and evacuation air pump 4.6 through the pipeline, and valve body 4.1 can drive valve rod 4.2 and block up the valve rod through hole between exhaust passage 4.4 and the exhaust chamber 4.3.
In the above, the valve rod through hole, the valve body 4.1 and the valve rod 4.2 form a control valve structure on the exhaust passage 4.4, the valve body 4.1 can drive the valve rod 4.2 to move in the valve rod through hole, so that the valve rod 4.2 can block one end of the valve rod through hole close to the exhaust cavity 4.3, or the exhaust cavity 4.3 is communicated with the exhaust passage 4.4, when the gas in the cavity 1.4 and the exhaust cavity 4.3 needs to be exhausted, the valve body 4.1 drives the valve rod 4.2 to be in the position where the exhaust passage 4.4 is communicated with the exhaust cavity 4.3, and then the vacuum-pumping pump 4.6 is started, so that the gas in the cavity 1.4 and the exhaust cavity 4.3 is exhausted after passing through the exhaust passage 4.4.4 and the filter 4.5, wherein a material for filtering and adsorbing harmful substances in the gas is arranged inside the filter 4.5, and is used for filtering the exhausted gas, so that the exhausted gas reaches the qualified emission standard. After the gas in the cavity 1.4 and the exhaust cavity 4.3 is exhausted, the valve body 4.1 drives the valve rod 4.2 to block a valve rod through hole between the exhaust channel 4.4 and the exhaust cavity 4.3, and the vacuum-pumping air pump 4.6 stops working, so that the cavity 1.4 and the exhaust cavity 4.3 are kept sealed, the gas is prevented from reversely entering the cavity 1.4 and the exhaust cavity 4.3, and the solution for die-casting a workpiece is also prevented from entering the exhaust channel 4.4 and the valve rod through hole.
In the above, through the arrangement of the exhaust passage 4.4, the filter 4.5, the vacuum pump 4.6 and the control valve structure mainly composed of the valve rod through hole, the valve body 4.1 and the valve rod 4.2, during die casting, the solution for die casting of the workpiece starts to enter the cavity 1.4 from the casting flow passage, at this time, the vacuum pump 4.6 is started, and the valve body 4.1 drives the valve rod 4.2 to be located at a position where the exhaust passage 4.4 is communicated with the exhaust cavity 4.3, so that the gas in the cavity 1.4 and the exhaust cavity 4.3 is sucked out under the action of the vacuum pump 4.6, when the solution for die casting of the workpiece fills the cavity 1.4 and partially enters the exhaust cavity 4.3, the vacuum pump 4.6 is closed, and the valve rod 4.2 is driven by the valve body 4.1 to block the valve rod through hole between the exhaust passage 4.4 and the exhaust cavity 4.3, thereby completing the casting operation. Wherein, because the effect of evacuation air pump 4.6 can make cavity 1.4 and exhaust chamber 4.3 in form the negative pressure, consequently there is the gas of corner also can be discharged in the cavity 1.4, can not form the book gas, reaches the effect of thoroughly discharging the gas in the cavity 1.4 clean, avoids having the bubble on the fashioned work piece of die-casting.
Referring to fig. 1, 2 and 3, in a preferred embodiment, the valve rod through hole is provided with a conical groove 4.8 at the end part close to one end of the exhaust cavity 4.3, and the valve rod 4.2 is provided with a convex ring 4.7 of which the outer surface is matched with the inner wall surface of the conical groove 4.8; the diameter of the valve rod through hole between the exhaust channel 4.4 and the exhaust cavity 4.3 is larger than the diameter of the valve rod 4.2, and the diameter of the valve rod through hole between the exhaust channel 4.4 and the valve body 4.1 is equal to the diameter of the valve rod 4.2. Specifically, through the setting of conical groove 4.8 and bulge loop 4.7, when valve body 4.1 promoted bulge loop 4.7 on the valve rod 4.2 and arranged in exhaust chamber 4.3, gaseous can be from between conical groove 4.8 and the bulge loop 4.7 through and enter exhaust passage 4.4 in, because the diameter of the valve rod through-hole between exhaust passage 4.4 and valve body 4.1 equals the diameter of valve rod 4.2, therefore gaseous can not get into in the valve rod through-hole between exhaust passage 4.4 and valve body 4.1. When the outer wall of the valve body 4.1 driving convex ring 4.7 clings to the inner wall of the conical groove 4.8, the exhaust cavity 4.3 is not communicated with the exhaust channel 4.4 any more, so that the control of the exhaust channel 4.4 by a control valve structure mainly comprising a valve rod through hole, the valve body 4.1 and the valve rod 4.2 is realized.
In another preferred embodiment, the diameter of the valve rod through hole between the exhaust channel 4.4 and the exhaust cavity 4.3 is equal to the diameter of the valve rod 4.2 at the end close to the exhaust cavity 4.3. In this implementation, when the valve body 4.1 drives the valve rod 4.2 to draw out the position of the valve rod through hole between the exhaust passage 4.4 and the exhaust cavity 4.3, the exhaust passage 4.4 is communicated with the exhaust cavity 4.3, and when the valve body 4.1 drives the valve rod 4.2 to be inserted into the position of the valve rod through hole between the exhaust passage 4.4 and the exhaust cavity 4.3, because the valve rod 4.2 blocks the valve rod through hole, namely the exhaust cavity 4.3 is not communicated with the exhaust passage 4.4 any more, the control of the exhaust passage 4.4 by the control valve structure mainly composed of the valve rod through hole, the valve body 4.1 and the valve rod 4.2 is realized.
In the above, the valve body 4.1 is preferably a telescopic cylinder.
The side surface of the fixed die 1 is fixedly connected with a guide strip 1.3 through a screw, one end of the guide strip 1.3 is fixedly arranged on the fixed die 1, the side surface of the movable die 2 is provided with a guide groove 2.3, the two side surfaces of the guide groove 2.3 are fixedly connected with a first wear-resistant block 2.2 through screws, and the guide strip 1.3 is slidably connected with the first wear-resistant block 2.2.
Specifically, because the mould is big in size and heavy, when the mould is closed, the quality of the die-cast product can be guaranteed only by guaranteeing high closing precision. Wherein, the direction when current mould adopts guide post and uide bushing to realize the mould compound die because guide post and uide bushing all inlay the dress on the mould, when wearing and tearing appear in guide post and uide bushing, guide post and uide bushing change inconveniently. In this application, gib block 1.3 passes through the fix with screw in the side of cover half 1, and first wear-resisting piece 2.2 passes through the fix with screw in the side of movable mould 2, plays the guide effect to cover half 1 and movable mould 2 when the compound die between gib block 1.3 and first wear-resisting piece 2.2, improves the precision of cover half 1 and movable mould 2 when the compound die simultaneously. When the guide strip 1.3 and the first wear-resistant block 2.2 are worn, the corresponding screws can be disassembled and assembled to replace the guide strip, so that the wear-resistant guide strip is convenient and simple.
In a preferred embodiment, a concave platform 2.1 is fixedly arranged on one end surface of the movable die 2 facing the fixed die 1, a second wear-resistant block 2.4 is fixed on a side wall of the concave platform 2.1 through a screw, a convex platform 1.1 corresponding to the concave platform 2.1 is arranged on one side of the fixed die 1 facing the movable die 2, and a third wear-resistant block 1.2 capable of abutting against the second wear-resistant block 2.4 is fixed on a side wall of the convex platform 1.1 through a screw.
The second wear-resisting piece 2.4, the third wear-resisting piece 1.2 set up respectively on sunken platform 2.1 and protruding platform 1.1 matched with lateral wall, and when movable mould 2 and cover half 1 were in the compound die state, the mutual butt of second wear-resisting piece 2.4 and third wear-resisting piece 1.2 played limiting displacement, improved the precision of mould compound die. The more than two second wear-resistant blocks 2.4 are respectively fixed on the side walls of the concave platform 2.1 in different directions, and the more than two third wear-resistant blocks 1.2 are respectively fixed on the side walls of the convex platform 1.1 in different directions, so that after the second wear-resistant blocks 2.4 and the third wear-resistant blocks 1.2 are mutually abutted, the limiting in multiple directions between the movable die 2 and the fixed die 1 is realized.
In the above, by arranging the guide strip 1.3 and two groups of different wear-resistant blocks of the first wear-resistant block 2.2, the second wear-resistant block 2.4 and the third wear-resistant block 1.2, the guide strip 1.3 is matched with the first wear-resistant block 2.2 to provide a guide function for the die assembly of the movable die 2 and the fixed die 1, so that certain precision is ensured when the movable die 2 and the fixed die 1 are assembled, then in the process of die assembly, the second wear-resistant block 2.4 is attached to the third wear-resistant block 1.2, the contact surface of the second wear-resistant block 2.4 and the third wear-resistant block 1.2 is used as a further guide reference, and the die assembly precision of the movable die 2 and the fixed die 1 is further improved by combining the matching of the guide strip 1.3 and the first wear-resistant block 2.2, in the die assembly process of the whole movable die 2 and the fixed die 1, two groups of different wear-resistant blocks realize twice positioning and guiding, so that the die assembly precision of the movable die 2 and the fixed die 1 is improved to the maximum extent, the reliability of equipment is greatly enhanced, and the quality of die products is ensured.
In the invention, the exhaust structure 4 is arranged on the mould, the exhaust structure 4 comprises a valve rod through hole communicated with an exhaust cavity 4.3 of the mould, a valve rod 4.2 is connected in the valve rod through hole in a sliding way, one end of the valve rod 4.2 far away from the exhaust cavity 4.3 is connected with a valve body 4.1, one end of the valve rod through hole close to the exhaust cavity 4.3 is provided with an exhaust channel 4.4, one end of the exhaust channel 4.4 is communicated with the valve rod through hole, the other end is sequentially connected with a filter 4.5 and a vacuum-pumping air pump 4.6 through a pipeline, when the air in the cavity 1.4 and the exhaust cavity 4.3 needs to be exhausted, the vacuum-pumping air pump 4.6, negative pressure is formed in the cavity 1.4 and the exhaust cavity 4.3 due to the action of the vacuum air pump 4.6, therefore, gas at the corner in the cavity 1.4 can be discharged, air entrainment can not be formed, the effect of thoroughly discharging the gas in the cavity 1.4 is achieved, bubbles are prevented from existing on a die-casting workpiece, and the quality of the workpiece is improved.
The cylinder body 3.11 of the telescopic component 3.2 of the mold core pulling structure 3 is directly fixedly connected with the mold, the piston rod 3.12 of the telescopic component 3.2 is arranged at one end of the cylinder body 3.11 far away from the mold, and therefore the movable space for the piston rod 3.12 to stretch is arranged at the outer side of the whole mold, so that when the whole mold is in a mold closing state, compared with the existing mold, the movable space is reduced, the volume of the mold is smaller, and the mold is convenient to carry.
Through setting up the wear-resisting piece of gib block 1.3 and first wear-resisting piece 2.2, the wear-resisting piece 2.4 of second and the wear-resisting piece 1.2 two sets of differences of third, improve the precision of movable mould 2 and cover half 1 when the compound die to gib block 1.3, first wear-resisting piece 2.2, the wear-resisting piece 2.4 of second and the wear-resisting piece 1.2 of third pass through the fix with screw in the movable mould 2 or the cover half 1 outside that correspond, when having wearing and tearing, convenient the change.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (9)
1. A die for die-casting a shell of an automobile gearbox comprises a movable die and a fixed die, wherein a cavity is arranged between the movable die and the fixed die, one side of the cavity is connected with a pouring runner, the pouring runner is arranged on the fixed die, and one side of the cavity, far away from the pouring runner, is communicated with an exhaust cavity;
still including the structure of loosing core, the structure of loosing core include with the flexible subassembly of the lateral surface fixed connection of movable mould, flexible subassembly includes cylinder body and piston rod, cylinder body one end is fixed on the movable mould, the inside sliding connection of one end and the cylinder body of piston rod, the other end of piston rod stretches out the one end that the movable mould was kept away from to the cylinder body, the one end that the cylinder body was being kept away from to the piston rod is connected with the connecting rod, connecting rod one end is connected with flexible end of flexible subassembly, and the other end just is connected with the connecting plate towards the movable mould, is connected with the slider on the connecting plate, is equipped with the spout on the movable mould, spout and movable mould side and die cavity intercommunication, slider and spout sliding connection, and the slider is connected with the core body of loosing core at a terminal surface of keeping away from the connecting plate.
2. The die for die-casting the automobile gearbox shell according to claim 1, wherein a travel switch is connected to one end of the piston rod, which is far away from the movable die, and the connecting plate, and a lug capable of triggering a travel switch signal is fixed to one end of the cylinder body, which is far away from the movable die.
3. The die for die-casting the automobile gearbox shell according to claim 2, wherein the number of the telescopic assemblies is two, and two ends of the connecting plate are respectively connected with the two telescopic assemblies in a sliding mode.
4. The die for die-casting the automobile gearbox shell according to claim 1, wherein the exhaust structure comprises a valve rod through hole which is arranged on the movable die or the fixed die and is communicated with the exhaust cavity, a valve rod is connected in the valve rod through hole in a sliding mode, one end, far away from the exhaust cavity, of the valve rod is connected with a valve body used for driving the valve rod to move, and the valve body is fixed on the outer side of the movable die; the valve rod through hole is close to exhaust chamber one end and is equipped with exhaust passage, and exhaust passage one end and valve rod through hole intercommunication, the other end connect gradually filter and evacuation air pump through the pipeline, and the valve body can drive the valve rod and block up the valve rod through hole between exhaust passage and the exhaust chamber.
5. The die for die-casting the automobile gearbox shell according to claim 4, wherein a conical groove is formed in the end part, close to one end of the exhaust cavity, of the valve rod through hole, and a convex ring with the outer surface matched with the inner wall surface of the conical groove is arranged on the valve rod; the diameter of the valve rod through hole between the exhaust channel and the exhaust cavity is larger than that of the valve rod.
6. The die casting automobile transmission case according to claim 4, wherein the diameter of the valve stem through hole between the exhaust passage and the exhaust cavity is equal to the diameter of the valve stem at the end close to the exhaust cavity.
7. The die for die casting a transmission case for an automobile according to any one of claims 4 to 6, wherein the valve body is a telescopic cylinder.
8. The die for die-casting the automobile gearbox shell according to claim 1, wherein a guide strip is fixedly connected to the side surface of the fixed die through a screw, one end of the guide strip is fixedly arranged on the fixed die, a guide groove is formed in the side surface of the movable die, first wear-resisting blocks are fixedly connected to the side surface of the guide groove through screws, and the guide strip is slidably connected with the first wear-resisting blocks.
9. The die for die-casting the automobile gearbox shell according to claim 8, wherein a concave platform is fixedly arranged on one end surface of the movable die facing the fixed die, a second wear-resisting block is fixed on the side wall of the concave platform through a screw, a convex platform corresponding to the concave platform is arranged on one side of the fixed die facing the movable die, and a third wear-resisting block capable of being abutted against the second wear-resisting block is fixed on the side wall of the convex platform through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800188.8A CN113618041A (en) | 2021-07-15 | 2021-07-15 | Die for die-casting automobile gearbox shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800188.8A CN113618041A (en) | 2021-07-15 | 2021-07-15 | Die for die-casting automobile gearbox shell |
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| Publication Number | Publication Date |
|---|---|
| CN113618041A true CN113618041A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110800188.8A Pending CN113618041A (en) | 2021-07-15 | 2021-07-15 | Die for die-casting automobile gearbox shell |
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| CN1409036A (en) * | 2001-09-21 | 2003-04-09 | 方达雷克斯公司 | Air exhaust valve assemby for casting |
| CN201316794Y (en) * | 2008-10-17 | 2009-09-30 | 广州市型腔模具制造有限公司 | Core-pulling mechanism for die |
| JP2012152779A (en) * | 2011-01-25 | 2012-08-16 | Ryobi Ltd | Die for die casting and die casting method |
| CN107900307A (en) * | 2017-12-05 | 2018-04-13 | 浙江华朔科技股份有限公司 | A kind of mould with dual pulled core structure |
| CN209832325U (en) * | 2019-04-16 | 2019-12-24 | 台州职业技术学院 | A mold guide positioning mechanism |
| CN212329601U (en) * | 2019-12-24 | 2021-01-12 | 广东文灿模具有限公司 | Automobile throttle valve die casting die |
| CN216027991U (en) * | 2021-07-15 | 2022-03-15 | 广东文灿模具有限公司 | Die for die-casting automobile gearbox shell |
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2021
- 2021-07-15 CN CN202110800188.8A patent/CN113618041A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409036A (en) * | 2001-09-21 | 2003-04-09 | 方达雷克斯公司 | Air exhaust valve assemby for casting |
| CN201316794Y (en) * | 2008-10-17 | 2009-09-30 | 广州市型腔模具制造有限公司 | Core-pulling mechanism for die |
| JP2012152779A (en) * | 2011-01-25 | 2012-08-16 | Ryobi Ltd | Die for die casting and die casting method |
| CN107900307A (en) * | 2017-12-05 | 2018-04-13 | 浙江华朔科技股份有限公司 | A kind of mould with dual pulled core structure |
| CN209832325U (en) * | 2019-04-16 | 2019-12-24 | 台州职业技术学院 | A mold guide positioning mechanism |
| CN212329601U (en) * | 2019-12-24 | 2021-01-12 | 广东文灿模具有限公司 | Automobile throttle valve die casting die |
| CN216027991U (en) * | 2021-07-15 | 2022-03-15 | 广东文灿模具有限公司 | Die for die-casting automobile gearbox shell |
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Address after: 528241 No. 28 Heshun Avenue, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant after: Guangdong Wencan Mould and Tooling Co.,Ltd. Address before: 528241 No. 28 Heshun Avenue, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant before: GUANGDONG WENCAN MOLD CO.,LTD. |
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