CN116618603B - Aluminum alloy die-casting conveying, positioning and clamping integrated device - Google Patents
Aluminum alloy die-casting conveying, positioning and clamping integrated device Download PDFInfo
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- CN116618603B CN116618603B CN202310868906.4A CN202310868906A CN116618603B CN 116618603 B CN116618603 B CN 116618603B CN 202310868906 A CN202310868906 A CN 202310868906A CN 116618603 B CN116618603 B CN 116618603B
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- 238000004512 die casting Methods 0.000 title claims abstract description 109
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 41
- 239000010720 hydraulic oil Substances 0.000 claims description 20
- 230000007306 turnover Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000005058 metal casting Methods 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2023—Nozzles or shot sleeves
-
- 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
- B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
-
- 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
-
- 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
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention relates to the technical field of metal casting, in particular to an aluminum alloy die-casting material conveying, positioning and clamping integrated device which comprises a frame, a die-casting mechanism and a material conveying mechanism; the material conveying mechanism comprises a storage bin, an upper punch, a lower punch and a transmission assembly, a die-casting spray head is arranged on the frame and comprises a hollow column and a twisted ring which are rotationally connected, the end faces of the hollow column and the twisted ring, which are close to the storage bin, are curved surfaces with concave middle and convex two sides in the horizontal direction, and in an initial state, the end faces of the hollow column and the twisted ring, which are close to the storage bin, are combined into a smooth curved surface which is integrated with the inner wall surface of the storage bin; the lower punch head makes the aluminum alloy that remains of the terminal surface department of hank ring produce ascending burr when upwards moving from die-casting shower nozzle, and makes hank ring rotate 180 through drive assembly when upwards moving, and then makes the burr extrude in the hank ring by protruding position on the hollow post terminal surface, can reduce the damage to the device, extrudees the burr in the hank ring again, is favorable to the foundry goods drawing of patterns of die-casting shower nozzle department.
Description
Technical Field
The invention relates to the technical field of metal casting, in particular to an aluminum alloy die-casting conveying, positioning and clamping integrated device.
Background
After the injection of the metal solution into the cavity is completed, the traditional aluminum alloy vertical die casting machine keeps pressure to solidify the aluminum alloy solution in the cavity, and due to the working principle of the vertical die casting machine, when the aluminum alloy solution is cooled, a part of the aluminum alloy solution remains in the die casting machine pressing chamber, excessive waste is sheared through a return punch and a nozzle to push out of the pressing chamber (adhesion possibly occurs with the solidified aluminum alloy solution), burrs are reserved on a casting, the die is easy to scratch during withdrawal, demolding can be influenced after a long time, and the burrs also influence the demolding of the casting.
Disclosure of Invention
The invention provides an aluminum alloy die-casting material conveying, positioning and clamping integrated device, which aims to solve the problem that a die is damaged by residual burrs at a nozzle of the existing die-casting device.
The invention relates to an aluminum alloy die-casting material conveying, positioning and clamping integrated device which adopts the following technical scheme:
an aluminum alloy die-casting material conveying and positioning clamping integrated device comprises a frame, a die-casting mechanism and a material conveying mechanism; the die-casting mechanism is arranged on the frame and is used for performing hydraulic die-casting molding on the aluminum alloy; the conveying mechanism is used for conveying aluminum alloy liquid into the die-casting mechanism, the conveying mechanism comprises a storage bin, an upper punch, a lower punch, a driving assembly and a transmission assembly, the storage bin is fixedly arranged on the frame, a die-casting spray head is arranged on the frame and comprises a hollow column and a twisted ring, the hollow column is fixed on the frame, an inner ring of the hollow column is communicated with the storage bin and the die-casting mechanism, and the end face of the hollow column, which is close to the storage bin, is a first end face; the winch is rotatably arranged on the first end face of the hollow column around the axis of the hollow column, and the end face of the winch ring, which is close to the storage bin, is a second end face; the first end face and the second end face are both curved surfaces with concave middle and convex two sides in the horizontal direction, and in an initial state, the first end face and the second end face are combined into a smooth curved surface which is integrated with the inner wall surface of the storage bin; the upper punch and the lower punch are both arranged in the storage bin in a vertically sliding manner, and squeeze aluminum alloy liquid in the storage bin to enter the die-casting mechanism through the die-casting spray head when the upper punch and the lower punch are mutually close; the driving assembly is used for driving the upper punch to move downwards and the lower punch to move upwards; when the lower punch moves upwards from the die-casting nozzle, the residual aluminum alloy at the second end face of the twisted ring generates upward burrs, and when the lower punch moves upwards continuously beyond the die-casting nozzle, the twisted ring rotates 180 degrees through the transmission assembly, so that the burrs are extruded into the twisted ring by the protruding position on the first end face.
Further, the transmission assembly comprises a transmission cylinder and a piston block, the transmission cylinder is arranged below the storage bin, and the piston block can be installed on the transmission cylinder in an up-down sliding manner and is fixedly connected with the lower punch; the inner wall of the transmission cylinder is provided with an avoidance groove, a push block and an elastic piece are arranged in the avoidance groove, and the push block extends out of the avoidance groove under the action of the elastic piece; the inner ring of the hollow column is provided with an arc-shaped oil groove, the twisted ring is in sliding seal with one side of the oil groove, which is close to the axis of the hollow column, and the outer ring of the twisted ring is provided with a push plate in sliding seal with the side wall of the oil groove; the avoidance groove is filled with hydraulic oil, the oil groove is communicated with the avoidance groove through a pipeline, the piston block extrudes the pushing block to enter the avoidance groove when moving upwards along with the lower punch, the pushing block extrudes the hydraulic oil in the avoidance groove to enter the oil groove, and the hydraulic oil entering the oil groove pushes the push plate to enable the twisting ring to rotate relative to the hollow column; when the piston block moves downwards along with the lower punch to be separated from contact with the push block, the push block resets under the action of the elastic piece and withdraws hydraulic oil in the oil groove back to the avoidance groove, so that the push plate drives the twisting ring to rotate and reset under the suction action of the hydraulic oil.
Further, the inner wall surfaces of the hollow column and the twisted ring are conical surfaces, one end of the conical surface, which is close to the first end surface, is a small end, and one end, which is far away from the first end surface, is a large end; the conical angle of the conical surface of the inner ring of the hollow column is smaller than that of the conical surface of the inner ring of the twisted ring.
Further, the lower punch comprises a first punch rod and a first punch, the first punch is fixed above the first punch rod, the first punch is in sliding sealing fit with the inner wall surface of the storage bin, and the size of the first punch is larger than the diameter of the first punch rod; the outer circumferential surface of the first punch is provided with a conical block, the upper end of the conical block is large, the lower end of the conical block is small, and the conical block is positioned on one side of the first punch, which is close to the die casting nozzle, and is used for further guiding the twisting ring to rotate and reset when the die casting nozzle moves downwards.
Further, the upper end surface of the first punch is an inclined surface so as to guide the residual aluminum alloy pushed out from the storage bin to be discharged after the first punch extends out of the storage bin.
Further, the die casting mechanism comprises a movable die assembly, a fixed die and a plurality of clamping assemblies, the movable die assembly comprises a driving piece, a mounting plate and a movable die, the mounting plate is slidably mounted on the frame and moves under the driving of the driving piece, and the movable die is mounted on the mounting plate through at least one clamping assembly; the fixed die is arranged on the frame through at least one clamping component, the fixed die is attached to the movable die to define a cavity, and the die casting nozzle is communicated with the cavity.
Further, the clamping assembly comprises a lower clamping plate, an upper clamping plate, a rotating shaft and a screw rod, wherein the lower clamping plate is fixedly arranged on the mounting plate or the rack, and the middle part of the upper clamping plate is rotationally connected with the lower clamping plate through the rotating shaft; the parts of the upper clamping plate, which are positioned on two sides of the rotating shaft, are respectively a clamping part and a locking part, the clamping part is used for being abutted against the moving die or the fixed die, the screw rod penetrates through the locking part and is in threaded fit with the locking part, and the screw rod is prevented from rotating around the rotating shaft when being abutted against the lower clamping plate, so that the clamping part is separated from the moving die or the fixed die.
Further, the die casting mechanism further comprises a spraying assembly, the spraying assembly comprises a turnover box and a spray head arranged on the turnover box, the turnover box can be installed on the frame in a vertical sliding mode and is externally connected with water or a release agent, and the spraying assembly is used for spraying the release agent to the movable die and/or the fixed die through the spray head.
Further, the shower nozzles have a plurality of, are located the both sides of turnover case respectively, and are located the shower nozzle specification of turnover case and differ to adapt to different spraying conditions.
The beneficial effects of the invention are as follows: according to the aluminum alloy die-casting material conveying and positioning clamping integrated device, the end face of the die-casting spray head is set to be the curved surface, the burrs are bent by utilizing the self shapes of the first end face and the second end face when the twisted ring rotates relative to the hollow column, the burrs can be prevented from scratching the hollow column or parts of the die-casting mechanism when the die-casting mechanism is demoulded, damage to the device can be reduced, the burrs are extruded into the twisted ring, and die-casting of the die-casting spray head is facilitated.
Further, through setting up the toper piece, can promote the hank ring and reset when the hank ring can not reset completely, avoid it to the next upward movement of lower punch to produce the interference.
Drawings
For a clearer description of embodiments of the invention or of the solutions of the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, from which, without inventive faculty, other drawings can be obtained for a person skilled in the art;
FIG. 1 is a schematic diagram of the overall structure of an embodiment of an aluminum alloy die-casting and conveying and positioning and clamping integrated device;
FIG. 2 is a schematic diagram of a frame and a die-casting mechanism in an embodiment of an aluminum alloy die-casting feeding, positioning and clamping integrated device;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a schematic view of a horizontal cross section of a die casting nozzle in an embodiment of an aluminum alloy die casting delivery, positioning and clamping integrated device of the present invention;
FIG. 5 is a schematic diagram of a die casting mechanism in an embodiment of an aluminum alloy die casting and feeding, positioning and clamping integrated device according to the present invention;
FIG. 6 is a schematic cross-sectional view of a die casting mechanism in an embodiment of an aluminum alloy die casting and feeding, positioning and clamping integrated device of the present invention;
FIG. 7 is an enlarged schematic view of FIG. 6 at B;
FIG. 8 is a schematic cross-sectional view of a die casting nozzle perpendicular to the axial direction of the die casting nozzle in an embodiment of an aluminum alloy die casting and feeding, positioning and clamping integrated device of the present invention;
FIG. 9 is a schematic diagram of the structure of the lower punch and piston block in an embodiment of an aluminum alloy die-casting feeding, positioning and clamping integrated device of the present invention;
FIG. 10 is a schematic view of a clamping assembly in an embodiment of an aluminum alloy die-casting feeding, positioning and clamping integrated device according to the present invention;
in the figure: 100. a frame; 110. a guide frame; 120. a lifting frame; 200. a die casting mechanism; 210. a movable mold assembly; 211. a driving member; 212. a mounting plate; 213. a movable mold; 220. a fixed mold; 230. a clamping assembly; 231. a lower clamping plate; 232. an upper clamping plate; 233. a rotating shaft; 234. a screw; 240. a spray assembly; 241. a turnover box; 242. a spray head; 300. a material conveying mechanism; 310. a storage bin; 311. a mounting frame; 320. an upper punch; 321. a second plunger; 322. a second punch; 330. a lower punch; 331. a first ram; 332. a first punch; 333. a conical block; 350. a transmission assembly; 351. a transmission cylinder; 352. a piston block; 353. an avoidance groove; 354. a pushing block; 355. an elastic member; 400. die casting nozzle; 410. a hollow column; 411. an oil groove; 412. an oil inlet; 413. an air outlet; 420. a twisting ring; 421. a push plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of an aluminum alloy die-casting feeding, positioning and clamping integrated device of the invention, as shown in fig. 1 to 10, comprises a frame 100, a die-casting mechanism 200 and a feeding mechanism 300.
The die casting mechanism 200 is disposed on the frame 100 and is used for hydraulic casting of aluminum alloy.
The feeding mechanism 300 is used for feeding aluminum alloy liquid into the die casting mechanism 200, and the feeding mechanism 300 includes a storage bin 310, an upper punch 320, a lower punch 330, a driving assembly, and a transmission assembly 350.
The storage bin 310 is fixedly installed to the frame 100 for temporarily storing the aluminum alloy liquid. The die-casting spray head 400 is arranged on the frame 100, the die-casting spray head 400 comprises a hollow column 410 and a twisted ring 420, the hollow column 410 is fixed on the frame 100, the inner ring of the hollow column 410 is communicated with the storage bin 310 and the die-casting mechanism 200, and the end surface of the hollow column 410, which is close to the storage bin 310, is a first end surface; the twisted ring 420 is rotatably mounted on a first end surface of the hollow column 410 around the axis of the hollow column 410, and the end surface of the twisted ring 420 close to the storage bin 310 is a second end surface; specifically, an annular groove is formed in an inner ring of the hollow column 410 near the first end surface, and an annular protrusion matched with the annular groove is formed on the outer circumference of the twisted ring 420, so that the twisted ring 420 is in rotating fit with the hollow column 410. The first end face and the second end face are both curved surfaces with concave middle and convex two sides in the horizontal direction, and in the initial state, the first end face and the second end face are combined into a smooth curved surface integrated with the inner wall surface of the storage bin 310.
The upper punch 320 and the lower punch 330 are both slidably installed in the storage bin 310 up and down, and squeeze the aluminum alloy liquid in the storage bin 310 to enter the die casting mechanism 200 through the die casting nozzle 400 when approaching each other; specifically, a liquid injection port (not shown in the figure) is formed between the upper punch 320 and the lower punch 330 on the side wall of the storage bin 310, and the aluminum alloy liquid is injected into the storage bin 310 through the liquid injection port and then the liquid injection port is closed. The driving assembly is used for driving the upper punch 320 to move downwards and the lower punch 330 to move upwards; the lower punch 330 causes the remaining aluminum alloy at the second end face of the grommet 420 to generate an upward burr as it moves upward from the die casting head 400, and the lower punch 330 rotates the grommet 420 180 ° through the transmission assembly 350 as it continues to move upward beyond the die casting head 400, thereby causing the burr to be pressed into the grommet 420 by the raised location on the first end face.
Through setting the terminal surface of die-casting shower nozzle 400 to the curved surface, utilize the hank ring 420 to bend the burr for the self shape of first terminal surface and second terminal surface when hollow post 410 rotates, the burr scratch hollow post 410 or the spare part of die-casting mechanism 200 when can avoiding die-casting mechanism 200 drawing of patterns can reduce the damage to the device, extrudees the burr again in hank ring 420, is favorable to the foundry goods drawing of patterns of die-casting shower nozzle 400 department.
In this embodiment, the transmission assembly 350 includes a transmission cylinder 351 and a piston block 352, the transmission cylinder 351 is disposed below the storage bin 310, and the piston block 352 is slidably mounted on the transmission cylinder 351 up and down and fixedly connected with the lower punch 330; the inner wall of the transmission cylinder 351 is provided with an avoidance groove 353, a push block 354 and an elastic member 355 are arranged in the avoidance groove 353, and the push block 354 extends out of the avoidance groove 353 under the action of the elastic member 355; specifically, the elastic member 355 is a spring. The inner ring of the hollow column 410 is provided with an arc-shaped oil groove 411, the twisted ring 420 is in sliding seal with one side of the oil groove 411, which is close to the axis of the hollow column 410, and the outer ring of the twisted ring 420 is provided with a push plate 421 in sliding seal with the side wall of the oil groove 411; specifically, one side of the oil groove 411 near the axis of the hollow column 410 is communicated with the ring groove, and the annular protrusion of the outer circumference of the twisted ring 420 penetrates through the side wall of the oil groove 411 near the axis of the hollow column 410 and is in sliding seal with the side wall of the oil groove 411; wherein the angle of the oil groove 411 in the circumferential direction of the hollow column 410 is slightly greater than 180 ° so that the packing ring 420 is just rotated 180 ° when the push plate 421 can move from one end of the oil groove 411 to the other. The avoiding groove 353 is filled with hydraulic oil, the oil groove 411 is communicated with the avoiding groove 353 through a pipeline, when the piston block 352 moves upwards along with the lower punch 330, the pushing block 354 is extruded to enter the avoiding groove 353, the pushing block 354 extrudes the hydraulic oil in the avoiding groove 353 to enter the oil groove 411, and the hydraulic oil entering the oil groove 411 pushes the push plate 421 to enable the packing ring 420 to rotate relative to the hollow column 410; specifically, two ends of the oil groove 411 in the circumferential direction of the hollow column 410 are a first end and a second end, respectively, and the second end is the bottommost end of the oil groove 411, and the first end is located above the second end; an oil inlet 412 is formed in the side wall of the first end of the oil groove 411, and an air outlet 413 is formed in the side wall of the second end, so that air in the oil groove 411 can be discharged when the push plate 421 moves; the push plate 421 is located at the first end of the oil groove 411 in the initial state, and hydraulic oil in the avoidance groove 353 enters the oil groove 411 through the oil inlet 412 and pushes the push plate 421 to move to the second end of the oil groove 411. When the piston block 352 moves downwards along with the lower punch 330 to be out of contact with the push block 354, the push block 354 resets under the action of the elastic piece 355 and withdraws hydraulic oil in the oil groove 411 back to the avoiding groove 353, so that the push plate 421 drives the wringer ring 420 to rotate and reset under the suction action of the hydraulic oil. In some other embodiments, a spring may be further installed in the oil groove 411 to urge the push plate 421 to rotate the twisted ring 420 for resetting when the piston block 352 is out of contact with the push block 354. Specifically, the lower side surface of the push block 354 is an inclined surface, the push block 354 is pushed into the avoidance groove 353 along the inclined surface when the piston block 352 moves upwards, the piston block 352 has a certain thickness, the avoidance groove 353 is always plugged when the push block 354 continues to move upwards after being pushed into the avoidance groove 353, the push block 354 is prevented from extending, and the push block 354 is prevented from extending beyond the push block 354 to prevent the piston block 352 from moving downwards to reset.
In this embodiment, the inner wall surfaces of the hollow column 410 and the twisted ring 420 are both conical surfaces, and one end of the conical surface close to the first end surface is a small end, and one end far away from the first end surface is a large end, so that the die casting mechanism 200 is convenient for demolding the aluminum alloy piece after die casting is completed; and the conical angle of the conical surface of the inner ring of the hollow column 410 is smaller than that of the conical surface of the inner ring of the twisted ring 420, so that the aluminum alloy at the die casting nozzle 400 is cut off when the lower punch 330 moves upwards.
In the present embodiment, the lower punch 330 includes a first punch 331 and a first punch 332, the first punch 332 is fixed above the first punch 331, the first punch 332 is in sliding sealing fit with the inner wall surface of the storage bin 310, and the size of the first punch 332 is larger than the diameter of the first punch 331. The upper punch 320 comprises a second punch rod 321 and a second punch 322, the second punch 322 is fixed at the lower end of the second punch rod 321, and the second punch 322 is in sliding sealing fit with the inner wall surface of the storage bin 310 after entering the storage bin 310; specifically, the upper end of the storage bin 310 is provided with a mounting frame 311, and the second ram 321 is slidably mounted on the mounting frame 311 up and down. The first punch 332 is externally provided with a conical block 333, and the conical block 333 is large at the upper end and small at the lower end, and is positioned on one side of the first punch 332 close to the die casting nozzle 400, and is used for further guiding the twisted ring 420 to rotate and reset when moving downwards from the die casting nozzle 400. Wherein, the outer circumferential surface of the conical block 333 is an arc surface, the upper part of the arc surface is attached to the inner wall surface of the storage bin 310, and the arc surface is obliquely arranged from top to bottom in the direction close to the first punch 332, i.e. a certain gap exists between the lower end of the conical block 333 and the inner wall surface of the storage bin 310; when the conical block 333 moves downwards, if the twisted ring 420 is not reset to be coplanar with the first end surface, the small end of the conical block 333 is first positioned in the middle of the second end surface of the twisted ring 420, and when the conical block 333 continues to move downwards, the upper end of the conical block 333 pushes the protruding positions on two sides of the twisted ring 420 to enable the protruding positions to rotate and reset further. By providing the tapered block 333, the capstan 420 can be urged to reset when the capstan 420 fails to reset completely, avoiding interference with the next upward movement of the lower punch 330.
In this embodiment, the driving assembly includes two hydraulic cylinders (not shown in the figure), and the two hydraulic cylinders respectively drive the second punch 321 and the piston block 352 to move up and down, and the piston block 352 drives the lower punch 330 to move up and down synchronously. In some other embodiments, the hydraulic cylinder may be replaced with a linear motor or other power element capable of driving the second ram 321 and the piston block 352 to move linearly.
In the present embodiment, the upper end surface of the first punch 332 is inclined to guide the discharge of the residual aluminum alloy pushed out from the storage bin 310 after extending out of the storage bin 310. In order to collect the residual aluminum alloy discharged from the storage bin 310, a guide plate connected with the inclined surface of the upper end of the first punch 332 may be disposed at the upper end of the storage bin 310 to guide the residual aluminum alloy carried by the first punch 332 to leave the storage bin 310.
In this embodiment, the die casting mechanism 200 includes a movable die assembly 210, a fixed die 220 and a plurality of clamping assemblies 230, the movable die assembly 210 includes a driving member 211, a mounting plate 212 and a movable die 213, the mounting plate 212 is slidably mounted on the frame 100 and moves under the driving of the driving member 211, specifically, a guide frame 110 is disposed on the frame 100, the mounting plate 212 is slidably mounted on the guide frame 110, the driving member 211 is a hydraulic cylinder, and the hydraulic cylinder pushes the mounting plate 212 to move along the guide frame 110. The movable mold 213 is mounted to the mounting plate 212 by at least one clamping assembly 230; the fixed mold 220 is mounted on the frame 100 through at least one clamping assembly 230, and the fixed mold 220 is attached to the movable mold 213 to define a cavity, and the die casting nozzle 400 is communicated with the cavity, so as to prevent aluminum alloy liquid from flowing back from the die casting nozzle 400, and the die casting nozzle 400 is located above the cavity. The movable mold 213 and the fixed mold 220 are both installed through the clamping assembly 230, so that replacement and maintenance are facilitated.
In this embodiment, the clamping assembly 230 includes a lower clamping plate 231, an upper clamping plate 232, a rotating shaft 233 and a screw 234, wherein the lower clamping plate 231 is fixedly mounted on the mounting plate 212 or the frame 100, and the middle part of the upper clamping plate 232 is rotatably connected with the lower clamping plate 231 through the rotating shaft 233; the upper clamping plate 232 is provided with a clamping part and a locking part at two sides of the rotating shaft 233, the clamping part is used for being abutted against the movable mold 213 or the fixed mold 220, the screw 234 penetrates through the locking part and is in threaded fit with the locking part, and the screw 234 is prevented from rotating around the rotating shaft 233 when being abutted against the lower clamping plate 231, so that the clamping part is separated from the movable mold 213 or the fixed mold 220. When the movable mold 213 or the fixed mold 220 is installed, the rotating screw 234 enables the screw 234 to be separated from the lower clamp plate 231, so that the upper clamp plate 232 is allowed to rotate around the rotating shaft 233, a clamping part can be opened at a larger angle with the lower clamp plate 231, and the movable mold 213 or the fixed mold 220 is convenient to install; after the movable mold 213 or the fixed mold 220 is mounted, the rotating screw 234 abuts against the lower clamp plate 231, and the clamping portion is restricted from rotating about the rotating shaft 233 and further expanding with the lower clamp plate 231, so that the movable mold 213 or the fixed mold 220 is clamped. To facilitate rotation of the screw 234, a handle is mounted to the end of the screw 234 remote from the lower jaw 231.
In this embodiment, the die casting mechanism 200 further includes a spray assembly 240, where the spray assembly 240 includes a turnover box 241 and a spray head 242 disposed on the turnover box 241, and the turnover box 241 is slidably mounted on the frame 100 up and down and externally connected with a release agent, and is used to spray the release agent to the movable mold 213 and/or the fixed mold 220 through the spray head 242, so as to facilitate the demolding of the die-cast aluminum alloy part. Specifically, the frame 100 is further provided with a lifting frame 120, the turnover box 241 is slidably installed up and down to the lifting frame 120, and the lifting and lowering of the turnover box 241 can be controlled by a linear motor in the prior art.
In this embodiment, a plurality of spray nozzles 242 are respectively located at two sides of the turnover box 241, and the spray nozzles 242 located in the turnover box 241 have different specifications so as to adapt to different spraying conditions; specifically, the length and the spraying range of the spray heads 242 with different specifications are different, so that the spray heads 242 with different specifications can be selectively turned on to work.
When the aluminum alloy die-casting material conveying and positioning clamping integrated device is used, the clamping assembly 230 is used for installing the movable die 213 and the fixed die 220, a certain distance is reserved between the movable die 213 and the fixed die 220, the turnover box 241 moves downwards between the movable die 213 and the fixed die 220, and a release agent is sprayed on the surfaces of the movable die 213 and the fixed die 220. And then, the driving piece 211 is started, so that the mounting plate 212 drives the movable mold 213 to be attached to the fixed mold 220 to define a cavity. In the initial state, the piston block 352 is positioned below the push block 354; the first punch 332 and the second punch 322 are both located in the storage bin 310, the first punch 332 is located above the die casting nozzle 400, aluminum alloy liquid is injected into the area between the first punch 332 and the second punch 322 in the storage bin 310 from the liquid injection port, and after the storage bin is full, liquid injection is stopped and the liquid injection port is closed. When the driving assembly is started, the upper punch 320 and the lower punch 330 synchronously move downwards until the lower punch 330 moves below the die casting nozzle 400, the lower punch 330 does not move any more, the driving assembly enables the upper punch 320 to continue to move downwards to extrude aluminum alloy liquid into a cavity through the die casting nozzle 400, the lowest position of the lower punch 320 moving downwards is higher than the die casting nozzle 400, the upper punch 320 is kept stationary to maintain pressure on the cavity after extrusion is finished, and after cooling is carried out for a certain time, the upper punch 320 is driven to move upwards to be separated from the storage bin 310. Then, the lower punch 330 is driven to move upwards, and the lower punch 330 is attached to the first end face and the second end face when moving upwards from the die casting nozzle 400, so that the residual aluminum alloy at the second end face of the twisted ring 420 generates upward burrs; the lower punch 330 continues to move upwards and drives the piston block 352 to move upwards, so that the piston block 352 moves to push the push block 354 into the avoidance groove 353, the push block 354 extrudes hydraulic oil in the avoidance groove 353 to enter the oil groove 411, the hydraulic oil entering the oil groove 411 pushes the push plate 421 to enable the twisted ring 420 to rotate 180 degrees relative to the hollow column 410, and burrs are extruded into the twisted ring 420 by the protruding position on the first end face. The lower punch 330 moves upward out of the storage bin 310, and pushes out the aluminum alloy remaining in the storage bin 310 during the upward movement. Then, the lower punch 330 moves downward to return to the initial position above the die-casting nozzle 400, and in the downward movement process, the piston block 352 is driven to move downward to be separated from the push block 354, so that the push block 354 is allowed to reset under the action of the elastic piece 355 and the hydraulic oil in the oil groove 411 is pumped back to the avoidance groove 353, and the push plate 421 drives the packing ring 420 to rotate and reset under the pumping action of the hydraulic oil.
The next time the lower punch 330 moves downward past the die casting head 400, the conical blocks 333 on the lower punch 330 push the raised positions on both sides of the packing ring 420 to rotate further back.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. An aluminum alloy die-casting material conveying, positioning and clamping integrated device is characterized in that: comprises a frame, a die-casting mechanism and a material conveying mechanism;
the die-casting mechanism is arranged on the frame and is used for performing hydraulic die-casting molding on the aluminum alloy;
the material conveying mechanism is used for conveying the aluminum alloy liquid into the die casting mechanism and comprises a storage bin, an upper punch, a lower punch, a driving component and a transmission component,
the storage bin is fixedly arranged on the frame, a die-casting spray head is arranged on the frame and comprises a hollow column and a twisted ring, the hollow column is fixed on the frame, the inner ring of the hollow column is communicated with the storage bin and the die-casting mechanism, and the end face of the hollow column, which is close to the storage bin, is a first end face; the winch is rotatably arranged on the first end face of the hollow column around the axis of the hollow column, and the end face of the winch ring, which is close to the storage bin, is a second end face; the first end face and the second end face are both curved surfaces with concave middle and convex two sides in the horizontal direction, and in an initial state, the first end face and the second end face are combined into a smooth curved surface which is integrated with the inner wall surface of the storage bin;
the upper punch and the lower punch are both arranged in the storage bin in a vertically sliding manner, and squeeze aluminum alloy liquid in the storage bin to enter the die-casting mechanism through the die-casting spray head when the upper punch and the lower punch are mutually close; the driving assembly is used for driving the upper punch to move downwards and the lower punch to move upwards; when the lower punch moves upwards from the die-casting nozzle, the residual aluminum alloy at the second end face of the twisted ring generates upward burrs, and when the lower punch moves upwards continuously beyond the die-casting nozzle, the twisted ring rotates 180 degrees through the transmission assembly, so that the burrs are extruded into the twisted ring by the protruding position on the first end face.
2. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 1, wherein: the transmission assembly comprises a transmission cylinder and a piston block, the transmission cylinder is arranged below the storage bin, and the piston block can be installed on the transmission cylinder in an up-down sliding manner and is fixedly connected with the lower punch; the inner wall of the transmission cylinder is provided with an avoidance groove, a push block and an elastic piece are arranged in the avoidance groove, and the push block extends out of the avoidance groove under the action of the elastic piece; the inner ring of the hollow column is provided with an arc-shaped oil groove, the twisted ring is in sliding seal with one side of the oil groove, which is close to the axis of the hollow column, and the outer ring of the twisted ring is provided with a push plate in sliding seal with the side wall of the oil groove; the avoidance groove is filled with hydraulic oil, the oil groove is communicated with the avoidance groove through a pipeline, the piston block extrudes the pushing block to enter the avoidance groove when moving upwards along with the lower punch, the pushing block extrudes the hydraulic oil in the avoidance groove to enter the oil groove, and the hydraulic oil entering the oil groove pushes the push plate to enable the twisting ring to rotate relative to the hollow column; when the piston block moves downwards along with the lower punch to be separated from contact with the push block, the push block resets under the action of the elastic piece and withdraws hydraulic oil in the oil groove back to the avoidance groove, so that the push plate drives the twisting ring to rotate and reset under the suction action of the hydraulic oil.
3. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 1, wherein: the inner wall surfaces of the hollow column and the twisted ring are conical surfaces, one end of the conical surface, which is close to the first end surface, is a small end, and one end of the conical surface, which is far away from the first end surface, is a large end; the conical angle of the conical surface of the inner ring of the hollow column is smaller than that of the conical surface of the inner ring of the twisted ring.
4. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 1, wherein: the lower punch comprises a first punch rod and a first punch, the first punch is fixed above the first punch rod, the first punch is in sliding sealing fit with the inner wall surface of the storage bin, and the size of the first punch is larger than the diameter of the first punch rod; the outer circumferential surface of the first punch is provided with a conical block, the upper end of the conical block is large, the lower end of the conical block is small, and the conical block is positioned on one side of the first punch, which is close to the die casting nozzle, and is used for further guiding the twisting ring to rotate and reset when the die casting nozzle moves downwards.
5. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 4, wherein: the upper end face of the first punch is an inclined plane so as to guide the residual aluminum alloy pushed out from the storage bin to be discharged after the first punch extends out of the storage bin.
6. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 1, wherein: the die casting mechanism comprises a movable die assembly, a fixed die and a plurality of clamping assemblies, wherein the movable die assembly comprises a driving piece, a mounting plate and a movable die, the mounting plate is slidably mounted on the frame and moves under the driving of the driving piece, and the movable die is mounted on the mounting plate through at least one clamping assembly; the fixed die is arranged on the frame through at least one clamping component, the fixed die is attached to the movable die to define a cavity, and the die casting nozzle is communicated with the cavity.
7. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 6, wherein: the clamping assembly comprises a lower clamping plate, an upper clamping plate, a rotating shaft and a screw rod, wherein the lower clamping plate is fixedly arranged on the mounting plate or the rack, and the middle part of the upper clamping plate is rotationally connected with the lower clamping plate through the rotating shaft; the parts of the upper clamping plate, which are positioned on two sides of the rotating shaft, are respectively a clamping part and a locking part, the clamping part is used for being abutted against the moving die or the fixed die, the screw rod penetrates through the locking part and is in threaded fit with the locking part, and the screw rod is prevented from rotating around the rotating shaft when being abutted against the lower clamping plate, so that the clamping part is separated from the moving die or the fixed die.
8. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 6, wherein: the die casting mechanism further comprises a spraying assembly, the spraying assembly comprises a turnover box and a spray head arranged on the turnover box, the turnover box can be installed on the frame in a vertical sliding mode and is externally connected with water or a release agent, and the spraying assembly is used for spraying the release agent to the movable die and/or the fixed die through the spray head.
9. The aluminum alloy die-casting feeding, positioning and clamping integrated device according to claim 8, wherein: the shower nozzle has a plurality ofly, is located the both sides of turnover case respectively, and is located the shower nozzle specification difference of turnover case to adapt to different spraying conditions.
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