CN117505808A - Vertical upper-feeding lower-opening die-casting machine and die-casting method thereof - Google Patents
Vertical upper-feeding lower-opening die-casting machine and die-casting method thereof Download PDFInfo
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- CN117505808A CN117505808A CN202311785094.3A CN202311785094A CN117505808A CN 117505808 A CN117505808 A CN 117505808A CN 202311785094 A CN202311785094 A CN 202311785094A CN 117505808 A CN117505808 A CN 117505808A
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- 238000004512 die casting Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 241
- 239000007924 injection Substances 0.000 claims abstract description 241
- 239000000463 material Substances 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 51
- 239000000243 solution Substances 0.000 claims description 48
- 230000008569 process Effects 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 5
- 230000010365 information processing Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 235000014347 soups Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 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
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
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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
- B22D17/266—Mechanisms or devices for locking or opening dies hydraulically
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a vertical upper-feeding lower-die-opening die-casting machine and a die-casting method thereof. The die casting machine adopts an upper vertical material injection mode, a die opening and closing mechanism is arranged on a bearing table, two sets of hydraulic lifting systems are respectively arranged on a die opening and closing mechanism and a die locking mechanism in the die opening and closing mechanism, and a material containing assembly and a stopper assembly which is linked with a pressing punch of a pressing device assembly are arranged on the pressing mechanism. The die casting method has two die casting modes according to the specific structure of the die casting machine. According to the die casting machine die locking device, the joint degree of the parting surfaces of the fixed die plate and the movable die plate after die assembly is finely adjusted through the four die locking cylinders, and the die locking force of the four die locking cylinders uniformly acts on four corners of the movable die plate when the movable die plate is driven to move upwards by the four die locking cylinders, so that the die locking force and the die locking effect between the fixed die plate and the movable die plate of the die casting machine can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of equipment manufacturing, relates to metal die casting forming and die casting methods, and in particular relates to a full-vertical upper-injection lower-opening die casting machine and an upper-injection vertical die casting method thereof.
Background
The die casting is widely applied to the fields of automobiles, aviation, electronics, machinery and the like, and the manufacturing process of the die casting has the advantages of high efficiency, high precision, short production period and the like, and compared with other processing methods, the die casting can produce more precise metal parts. The die casting is formed by die casting through a die casting machine by a specific process, and the die casting machine is a machine for die casting, which is manufactured by die casting. The die casting machine hydraulically shoots molten metal into a die under the action of pressure to be cooled and molded, and a solid metal casting can be obtained after the die is opened.
Patent publication No. CN112496294A, published in 2021, month 03 and 16, discloses an utility model entitled efficient full vertical die casting machine. The paragraph [0027] describes that the top end of the die casting machine main body is provided with a fixed mould, the middle positions of the two sides of the fixed mould are fixedly connected with fixed blocks, the two sides of the bottom end of the fixed mould are fixedly connected with inserting rods, one side of the inside of each inserting rod is provided with a second inserting hole, and the fixed mould can be fixed at the top end of the die casting machine main body. The top of fixed mould is provided with the movable mould, and the intermediate position of movable mould inside is provided with the shunt, and the second cylinder is installed on the top of movable mould, and the both sides of movable mould are all fixedly connected with connecting block, and the inside top fixedly connected with elastic plate of connecting block, and one side of connecting block outside is provided with the loose axle, and the inside swing joint of loose axle has the cardboard, realizes the mode locking.
The technical problems of the high-efficiency full-vertical die casting machine disclosed in the patent document occur in the specific application process;
1) The die-casting machine has the advantages that the die-casting speed is low, the second air cylinder is arranged at the top end of the movable die, the second air cylinder drives the movable die to move up and down, the up-and-down movement of the movable die and the die-casting movement of the fixed die of the die-casting machine are completed by driving the second air cylinder, the up-and-down movement of the movable die is higher than the die-casting speed of the movable die and the die-casting die in the specific application process of the die-casting machine, and the movable die is difficult to meet the speed requirements of the movable die in different working procedures under the driving of the second air cylinder.
2) The die locking seal is not tight, in the setting of the die casting machine, the second air cylinder not only drives the up-and-down motion of the movable die and the die locking motion of the movable die and the fixed die, the die locking force after the die locking is also provided by the second air cylinder, and the second air cylinder arranged on the movable die cannot evenly distribute the driving force to the four edges of the movable die. When the edge of the movable die is slightly warped and deformed or residues are adhered to the edge of the parting surfaces of the movable die and the fixed die, gaps are formed in the parting surfaces of the movable die and the fixed die, which are connected after the movable die and the fixed die are clamped, so that the phenomenon of loose die locking and sealing of the die casting machine is caused.
3) The die locking force is not strong, the die casting machine carries out die locking operation through the connecting blocks which are fixedly connected with the two sides of the movable die, when the elastic plate in the fixed block is loose and shifted, or the connecting ends of the clamping plate and the elastic plate are worn too much, the die locking pressure between the movable die and the fixed die of the die casting machine after the die closing of the movable die and the fixed die is further reduced, and the movable die and the fixed die are in die casting process to have die expansion phenomenon, so that the yield of casting products is lower.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a vertical type upper injection and lower die-opening die casting machine and a die casting method thereof, wherein the die casting machine adopts an upper vertical injection mode, two sets of hydraulic lifting systems are respectively arranged on an opening and closing die and a locking die in a die opening and closing mechanism, and a material containing assembly and a stopper assembly which is linked with an injection punch of the injector assembly are arranged on the injection mechanism. The die casting method has two die casting modes according to the specific structure of the die casting machine.
The invention relates to a vertical upper-feeding lower-opening die-casting machine which comprises a lower frame body, a bearing table, a die opening and closing mechanism and a die injection mechanism.
Specifically, its the mould mechanism that opens and shuts includes, four perpendicular connection set up the tie-bar in the top of plummer, fixed cover seat board that sets up tie-bar top, and the movable mould bedplate of slip cap on tie-bar cylinder is hung to the slip cap, and four mode locking hydro-cylinders that its piston rod I of setting below the plummer is connected with the movable mould base board bottom, two lift cylinder that its piston rod II of setting below the plummer is connected with movable mould base board both sides, links the frame through the board and connects the ejection device that sets up in the upper end of plummer or connection setting at the movable mould base board lower extreme.
Specifically, the injection mechanism comprises a column connecting frame arranged at the upper end of a fixed die seat plate, an injector assembly and a hydraulic cylinder assembly which are arranged on the column connecting frame, an energy accumulator assembly arranged at the upper end of the column connecting frame or the fixed die seat plate, and a stopper rod assembly which is arranged on a movable die seat plate and moves up and down along with a movable die plate and consists of a jacking cylinder, a stopper rod and a screw connecting rod, wherein a piston rod of the jacking cylinder and the stopper rod move at two points up and down in a punch hole arranged on the movable die seat plate and the movable die plate, the upper end surface of the stopper rod is a movement starting point when the upper end surface of the stopper rod is sealed and aligned with a parting surface of the movable die plate, and the upper end surface of the stopper rod is a movement ending point when the upper end surface of the stopper rod is attached and sealed with the lower end of a sprue bush of the fixed die plate;
specifically, the injection device assembly comprises a feeding barrel which is vertically and penetratingly arranged on a fixed die seat plate, an injection rod which is connected with a hydraulic cylinder assembly, an injection punch which is arranged at the front end of the injection rod, and a funnel-shaped external pouring gate which is arranged at the position, higher than the upper end face of the fixed die seat plate, of the feeding barrel, wherein the injection punch in the injection device assembly is in linkage with a stopper rod of the stopper rod assembly in the injection process of the die casting machine.
Optionally, the ejection device of the full-vertical injection and lower-opening die casting machine comprises two ejection cylinders which are symmetrically arranged and connected with a bearing table through a plate connecting frame, an ejector pin connecting plate which is connected with the top end of a piston rod III of the ejection cylinder, and an ejector pin which penetrates through a movable die plate and a movable die plate, wherein the upper end surface of the ejector pin connecting plate is provided with the ejector pin.
Optionally, the ejection device of the full-vertical injection and lower-opening die casting machine comprises two ejection cylinders which are symmetrically arranged and connected with the movable die base plate through a plate connecting frame, an ejector pin connecting plate which is connected with the top end of a piston rod III of the ejection cylinder, and an ejector pin which penetrates through the movable die base plate and the movable die plate, wherein the ejector device moves up and down along with the movable die base plate.
Furthermore, the injection mechanism of the full-vertical injection and bottom-opening die casting machine also comprises a material containing assembly which is arranged on the fixed die seat plate and connected with the material feeding cylinder and consists of a material containing cylinder, a top-withdrawing cylinder and a material ejection punch. The cylinder wall of the feeding cylinder is provided with an opening, a tenon at the front end of the feeding cylinder is inserted into the injection cavity of the feeding cylinder through the opening, the tenon is in sealing connection with the outer wall of the opening, and the discharge hole of the feeding cylinder is communicated with the injection cavity of the feeding cylinder. The front end face of the tenon of the containing cylinder and the front end face of the ejection punch are arc-shaped, and the arc degree is consistent with the radian of the inner wall of the injection cavity of the feeding cylinder.
Preferably, the full-vertical upper-injection lower-opening die-casting machine provided by the invention has the advantages that the opening of the feeding cylinder and the tenon of the receiving cylinder are in mutually matched ladder-shaped cones, and the discharge hole of the receiving cylinder and the head part of the ejection punch head are in mutually matched ladder-shaped cones.
Preferably, the full-vertical upper-feeding lower-opening die casting machine is characterized in that the material containing cylinder is T-shaped, the front end of the material containing cylinder is provided with an arc-shaped surface which is attached and sealed with the material containing cylinder, the rear end of the material containing cylinder is symmetrically provided with two internal threaded holes, and the material containing cylinder is propped and fixed in a T-shaped groove arranged on the upper end face of the fixed die seat plate through bolts arranged on the internal threaded holes.
Alternatively, the four mold locking cylinders of the full-vertical upper-feeding lower-opening mold pressing casting machine are respectively provided with a hydraulic sensor.
Alternatively, the full-vertical upper-injection lower-opening die casting machine is characterized in that the upper end face of the movable die base plate and four sides of the lower end face of the fixed die base plate are respectively provided with a pressure sensing device and a pressing probe, and the pressing probes are contacted with a piezoresistive substrate of the pressure sensing device after the die casting machine is assembled.
The embodiment of the upper material injection vertical die casting method of the full-vertical upper material injection lower die casting machine comprises the following steps of;
and step one, die assembly, wherein the two lifting cylinders simultaneously drive the movable die base plate to move upwards, and the parting surfaces of the movable die plate arranged on the movable die base plate and the fixed die plate arranged on the fixed die base plate are contacted.
And step two, locking the mold, wherein the top lifting mold base plate of the four mold locking cylinders moves upwards, the mold locking cylinders independently adjust the lifting distance of piston rods of the mold locking cylinders, and when the oil pressure values in the four mold locking cylinders reach preset pressure simultaneously, the oil pressure is locked simultaneously.
And thirdly, jacking the stopper rod, namely jacking the stopper rod from the initial point of movement of the parting surface of the movable template to the lower end movement termination point of the sprue bush of the fixed template, and sealing the injection cavity of the sprue bush.
And step four, pouring the metal solution into the injection cavity of the injection device assembly feeding cylinder from the funnel-shaped external pouring gate of the feeding cylinder.
And step five, quick injection, wherein the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in an injection cavity of the feeding barrel, and after the injection punch extrudes and discharges air in the injection cavity of the feeding barrel, the bottom of the injection punch is fully contacted with the metal solution in the injection cavity, and then the hydraulic cylinder assembly stops working.
And step six, three-speed injection and stopper rod return, wherein after the bottom end of the injection punch fully contacts with the metal solution in the injection cavity of the feeding barrel, the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in the injection cavity of the feeding barrel, the jacking cylinder rapidly drives the stopper rod to rapidly descend from the lower end movement termination point of the fixed template sprue bush to the movement initial point of the movable template parting surface while the injection punch moves downwards, the stopper rod seals the punch hole at the parting surface end of the movable template, and the metal solution in the injection cavity of the feeding barrel is injected into the mold cavity between the movable template and the fixed template.
And seventhly, pressurizing, namely continuously increasing pressure to a pressurizing piston in the hydraulic cylinder assembly by the energy accumulator assembly, and continuously driving the injection punch of the injection rod to continuously increase pressure to the metal solution in the model cavity between the movable die plate and the fixed die plate by the hydraulic cylinder assembly.
And 8, die sinking and ejection, wherein after the metal solution is preliminarily cooled and formed in the die cavities of the movable die plate and the fixed die plate, the hydraulic cylinder assembly drives the injection rod and the injection punch to return to the initial positions in the injection cavity of the feeding cylinder, the two lifting cylinders simultaneously drive the movable die base plate and the movable die plate arranged on the movable die base plate to move downwards, the ejector pin of the ejection device penetrates into the movable die base plate and the movable die plate through the ejector pin hole, the ejector cylinder of the ejection device drives the ejector pin connecting plate and the ejector pin to move upwards, and the ejector pin stretches out of the die cavity of the movable die plate through the ejector pin holes of the movable die base plate and the movable die plate to eject the die casting from the product position of the movable die plate.
The embodiment of the upper material injection vertical die casting method of the full-vertical upper material injection lower die casting machine comprises the following steps of;
and step one, die assembly, wherein the two lifting cylinders simultaneously drive the movable die base plate to move upwards, and the parting surfaces of the movable die plate arranged on the movable die base plate and the fixed die plate arranged on the fixed die base plate are contacted.
And step two, locking the mold, wherein the top lifting mold base plate of the four mold locking cylinders moves upwards, the mold locking cylinders independently adjust the lifting distance of piston rods of the mold locking cylinders, and when the oil pressure values in the four mold locking cylinders reach preset pressure simultaneously, the oil pressure is locked simultaneously.
And thirdly, jacking the stopper rod, namely jacking the stopper rod from the initial point of movement of the parting surface of the movable template to the lower end movement termination point of the sprue bush of the fixed template, and sealing the injection cavity of the sprue bush.
And step four, injecting liquid and containing materials, pouring the metal solution into an injection cavity of the feeding barrel of the injection device assembly through a hopper-shaped external pouring gate of the feeding barrel, driving a jacking punch to move backwards in the containing barrel by a pushing oil cylinder, enabling the metal solution to flow into the containing barrel through the feeding barrel, and stopping working and simultaneously injecting liquid when the metal solution in the feeding barrel and the containing barrel accords with a preset volume.
And step five, quick injection, wherein the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in an injection cavity of the feeding barrel, and after the injection punch extrudes and discharges air in the injection cavity of the feeding barrel, the bottom of the injection punch is fully contacted with the metal solution in the injection cavity, and then the hydraulic cylinder assembly stops working.
Step six, two-speed injection and pressurization are carried out, the ejection cylinder drives the ejection punch to move forwards in the material containing cylinder, the ejection punch ejects the metal solution in the material containing cylinder into the material feeding cylinder, the ejection cylinder drives the front end of the ejection punch to seal the hole of the material containing cylinder and then stop working, and the ejection punch moves forwards and simultaneously the ejection cylinder drives the plug rod to move downwards from the lower end of the pouring sleeve of the fixed template. The energy accumulator component continuously increases pressure in the pushing oil cylinder of the material containing component, and the pushing oil cylinder drives the material pushing punch to seal the opening of the material containing cylinder and then lock the opening.
And step seven, three-speed injection and stopper rod return, wherein the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in the injection cavity of the feeding barrel, the jacking cylinder rapidly drives the stopper rod to rapidly descend from the lower end of the fixed template sprue bush and return to the initial point of the movement of the parting surface of the movable template when the injection punch moves downwards, the stopper rod seals the punch hole at the parting surface end of the movable template, and metal solution in the injection cavity of the feeding barrel is injected into a mold cavity formed between the movable template and the fixed template.
Step eight, pressurizing, wherein the energy accumulator assembly continuously increases pressure to a pressurizing piston in the hydraulic cylinder assembly, and the hydraulic cylinder assembly continuously drives the injection punch of the injection rod to continuously increase pressure to the metal solution in the model cavity between the movable die plate and the fixed die plate.
Step nine, die sinking and ejection, after metal solution is initially cooled and formed in a die cavity of a movable die plate and a die cavity of a fixed die plate, a hydraulic cylinder assembly drives a injection rod and an injection punch to return to an initial position in the injection cavity of a feeding cylinder, two lifting cylinders simultaneously drive a movable die seat plate and the movable die plate arranged on the movable die seat plate to move downwards, a thimble of an ejection device penetrates into the movable die seat plate and the movable die plate through a thimble hole, the ejection cylinder of the ejection device drives the thimble connecting plate and the thimble to move upwards, and the thimble stretches out of the die cavity of the movable die plate through the thimble hole of the movable die seat plate and the thimble hole to eject a die casting from a product position of the movable die plate.
The vertical upper-feeding lower-opening die-casting machine and the die-casting method thereof have the beneficial effects that:
1. the die casting machine adopts an upper vertical material injection mode, two sets of hydraulic lifting systems are respectively arranged on a die opening and closing mechanism and a die locking mechanism, the die opening and closing mechanism moves up and down rapidly through two lifting cylinders, and a fixed die plate and a movable die plate of the die casting machine complete a die opening and closing process through the two lifting cylinders.
2. The die casting machine die locking is finely adjusted to the parting surface laminating degree of the fixed die plate and the movable die plate after die assembly through four die locking cylinders, and the die locking force of the four die locking cylinders is uniformly applied to four corners of the movable die base plate when the movable die base plate is driven to move upwards, so that the die locking force and the die locking effect between the fixed die plate and the movable die plate of the die casting machine can be effectively improved.
3. The four die locking cylinders of the die casting machine are respectively provided with a hydraulic sensor or a pressure sensing device, the four die locking cylinders monitor hydraulic pressure in the cylinders through the hydraulic sensors or the pressure sensing devices, and the hydraulic pressure in the four die locking cylinders is timely adjusted through monitoring data, so that four sides of the parting surfaces of the movable die plate and the fixed die plate are tightly contacted, and further the die locking sealing effect of the die casting machine is improved.
4, the injection mechanism of the die casting machine is provided with a material containing component connected with the injection injector component feeding barrel, when the die casting volume is large or a die casting die with multiple cavities is used, more metal solution can be contained according to the need through the space in the material containing component, and the die casting machine does not need to replace the feeding barrel with a larger diameter to meet the requirement of increasing the volume.
The beneficial effects of the present invention are not limited to this description, but are described in more detail in the detailed description section for better understanding.
Drawings
FIG. 1 is a schematic view showing the overall structure of a vertical injection molding machine with a lower opening
FIG. 2 is a schematic diagram showing the structure of a mold opening and closing mechanism and a mold injection mechanism of a vertical injection molding machine with lower opening and closing
FIG. 3 is a schematic diagram showing the structure of a mold opening and closing mechanism and a mold injection mechanism of a vertical injection molding machine with lower opening and closing
FIG. 4 is an exploded view of a mold opening and closing mechanism and an injection mechanism of a vertical injection and bottom opening mold casting machine according to the present invention
FIG. 5 is a schematic view of a vertical injection and lower opening mold opening and closing mechanism and an injection mechanism of a mold casting machine according to the present invention
FIG. 6 is a schematic view showing a first embodiment of an ejector structure of a vertical injection molding machine
FIG. 7 is a schematic view showing a second embodiment of an ejector structure of a vertical injection molding machine of the present invention
FIG. 8 is a schematic view of a vertical upper-loading lower-opening mold casting machine material-containing assembly structure according to the present invention
FIG. 9 is a schematic diagram showing the structure of a vertical injection molding machine with upper and lower mold opening according to the present invention
FIG. 10 is a schematic diagram showing the structure of a vertical injection molding machine with upper and lower mold opening according to the present invention, showing the structure of the material-receiving member in an exploded manner (II)
FIG. 11 is a schematic view showing a two-dimensional longitudinal section of a material-receiving member of a vertical injection molding machine with a lower opening
FIG. 12 is a schematic diagram showing a two-dimensional diagram of a method of casting a vertical injection molding machine with a lower die
FIG. 13 is a schematic diagram showing a two-dimensional diagram of a method of casting a vertical injection molding machine with a lower opening
FIG. 14 is a schematic diagram showing a two-dimensional view of a vertical injection molding machine with a lower die casting method according to the present invention
FIG. 15 is a schematic diagram showing a two-dimensional view of a vertical injection molding machine with a lower die casting method according to the present invention
FIG. 16 is a schematic diagram showing a two-dimensional casting method of a vertical injection bottom-opening mold casting machine according to the present invention
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
The working principle of the whole and detail structure of the vertical upper-feeding lower-opening die casting machine of the invention is further described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the main structure of the vertical upper-injection lower-opening die-casting machine sequentially comprises a lower frame body 1, a bearing table 2, a die opening and closing mechanism 3 and a die injection mechanism 4 from bottom to top, wherein the bearing table 2, the die opening and closing mechanism 3 and the die injection mechanism 4 are supported and fixed by the lower frame body 1.
As shown in fig. 1, the mold opening and closing mechanism 3 is disposed on the carrying platform 2, and includes a tie bar 31, a fixed mold base plate 32, a movable mold base plate 33, a mold locking cylinder 34, a lifting cylinder 35, a plate connecting frame 36 and an ejector 37.
As shown in fig. 2 and 3, four tie bars 31 are vertically connected and arranged above the carrying table 2, the top ends of the tie bars 31 are fixedly arranged on the fixed die base plate 32, and referring to fig. 5, the fixed die plate 32a is connected and arranged at the lower end of the fixed die base plate 32. The four corners of the movable die plate 33 are slidably engaged with the columns of the four tie bars 31, and as shown in fig. 5, the movable die plate 33a is connected to the upper end of the movable die plate 33. Four mode locking cylinders 34 are arranged below the bearing table 2, a piston rod I34 a of each mode locking cylinder 34 is connected with the bottom surface of the movable die base plate 33, each mode locking cylinder 34 drives the movable die base plate 33 and the movable die plate 33a to slide up and down on the tie bar 31 through the piston rod I34 a, and the movable die plate 33a and the movable die base plate 33 drive the die locking cylinders 34 to complete the mode locking process of the die casting machine. The two lifting cylinders 35 are arranged below the bearing table 2, piston rods II 35a of the lifting cylinders 35 are connected with two sides of the movable die base plate 33, the lifting cylinders 35 drive the movable die base plate 33 and the movable die plate 33a to slide up and down on the tie bar 31 through the piston rods I34 a, and the movable die plate 33a and the movable die base plate 33 drive the die-casting machine to complete the die-opening and die-closing process of the die-casting machine through the two lifting cylinders 35. As shown in fig. 4, the ejector 37 is connected to the upper end of the carrying table 2 via the board connecting frame 36.
As shown in fig. 1 and 4, the injection mechanism 4 includes a post frame 41, an injector assembly 42, a hydraulic cylinder assembly 43, an accumulator assembly 44, and a stopper assembly 45. The post is even put up 41 settings and is in the cover half bedplate 32 upper end, and the injection ware subassembly 42 sets up the middle part that the post even put up 41 support bodies, and pneumatic cylinder subassembly 43 sets up in the post even put up 41 upper ends, and the energy storage ware subassembly 44 sets up in the upper end that the post even put up 41 or cover half bedplate 32, and stopper rod subassembly 45 sets up the lower extreme at the movable mould bedplate 33 in the connection.
More specifically, as shown in fig. 4 and 5, the stopper rod assembly 45 is composed of a jack cylinder 45a, a stopper rod 45b and a screw rod 45 c. The stopper rod assembly 45 is fixedly provided on the movable die plate 33 through screw links 45c at both sides of the jacking cylinder 45a and moves up and down with the movable die plate 33. The stopper 45b is connected with a piston rod of a jacking cylinder 45a, the piston rod of the jacking cylinder 45a and the stopper 45b move in a punch hole 331 arranged on the movable die plate 33 and the movable die plate 33a at two points up and down, when the upper end surface of the stopper 45b is attached and sealed with the lower end of the gate sleeve 32b of the fixed die plate 32a, the movement starting point is used, when the upper end surface of the stopper 45b is sealed and leveled with the parting surface of the movable die plate 33a, the movement ending point is used,
as shown in fig. 5, the injector assembly 42 includes a feed cylinder 42a, an injection rod 42b, and an injection ram 42c. The feed cylinder 42a is vertically and penetratingly provided on the stationary platen 32, and the rear end of the injection rod 42b is connected to a hydraulic cylinder assembly 43 (see fig. 4), and the front end of the injection rod 42b is connected to an injection punch 42c. The feed cylinder 42a is provided with a funnel-shaped outer gate 42a1 at a position higher than the upper end surface of the fixed die plate 32, and the hydraulic cylinder assembly 43 drives the injection punch 42c to move up and down in the feed cylinder 42a and the gate sleeve 32b of the movable die plate 33 a. The injection punch 42c in the injector assembly 42 and the stopper rod 45b of the stopper rod assembly 45 are synchronously linked up and down in the injection process of the die casting machine.
Alternatively, in the vertical injection and bottom opening mold casting machine of the present invention, as shown in fig. 6, the ejector 37 includes an ejector cylinder 37a, an ejector pin connecting plate 37b, and an ejector pin 37c. The two ejection cylinders 37a are symmetrically arranged and connected with the bearing table 2 through the plate connecting frame 36, the ejector pin connecting plate 37b is connected and arranged at the top end of a piston rod III 37a1 of the ejection cylinder 37a, and the ejector pin 37c is arranged on the upper end face of the ejector pin connecting plate 37 b. The movable die plate 33 and the movable die plate 33a are provided with ejector pin holes 33a1 into which ejector pins 37c are inserted and which move up and down, and the ejector cylinders 37a drive the ejector pins 37c to move up and down in the ejector pin holes 33a1 of the movable die plate 33 and the movable die plate 33 a.
Alternatively, as shown in fig. 7, the ejector 37 of the vertical injection molding machine of the present invention includes an ejector cylinder 37a, an ejector pin connecting plate 37b, and an ejector pin 37c. The two ejection cylinders 37a are symmetrically arranged and connected with the movable die base plate 33 through the plate connecting frame 36, and the ejection device 37 moves up and down along with the movable die base plate 33. The ejector pin connecting plate 37b is connected with the top end of a piston rod III 37a1 of the ejector cylinder 37a, and the ejector pin 37c is arranged on the upper end surface of the ejector pin connecting plate 37 b. The movable die plate 33 and the movable die plate 33a are provided with ejector pin holes 33a1 (the ejector pin holes 33a1 on the movable die plate 33 are not shown in the drawing, and reference is made to the ejector pin holes 33a1 of the movable die plate 33), and the ejector cylinders 37a drive the ejector pins 37c to move up and down in the ejector pin holes Aa of the movable die plate 33 and the movable die plate 33 a.
In the above embodiment of the vertical injection and bottom opening die casting machine of the present invention, the injection injector assembly has a limited feeding barrel volume, for example, when the volume of the product to be die-cast is large or a set of multi-acupoint dies are die-cast simultaneously, the feeding barrel with a larger diameter needs to be replaced to meet the requirement of increasing the volume, the injection punch matched with the feeding barrel needs to be replaced at the same time when the diameter of the feeding barrel is changed, and the time required for replacing the feeding barrel and the injection punch can affect the production efficiency more or less.
In order to solve the technical problems of the die casting machine, the injection mechanism of the vertical injection and bottom opening die casting machine further comprises a material containing component.
Specifically, as shown in fig. 8, the material containing assembly 46 is disposed on the fixed mold base plate 32 or disposed in the material containing groove 32c of the fixed mold base plate 32 (as shown in fig. 9 and 10, the material containing assembly 46 is disposed in the material containing groove 32c of the fixed mold base plate 32), and the front end of the material containing assembly 46 is in communication with the feeding barrel 42a of the injector assembly 42. Fig. 9 and 10 and 11 show that the receiving assembly 46 includes a receiving cylinder 46a, an ejector cylinder 46b, and an ejector punch 46c. The barrel wall of the feeding barrel 42a is provided with an opening 42a2, the front end of the receiving barrel 46a is provided with a tenon 46a1, the tenon 46a1 is inserted into the injection cavity 42a3 of the feeding barrel 42a through the opening 42a2 of the feeding barrel 42a so as to realize the communication between the receiving barrel 46a and the feeding barrel 42a, the tenon 46a1 is in sealing connection with the outer wall of the opening 42a2, and the discharge hole 46a2 of the receiving barrel 46a is communicated with the injection cavity 42a3 of the feeding barrel 42 a. Referring to fig. 11, the ejector ram 46c is connected to the ejector cylinder 46b by a piston rod thereof, and the ejector cylinder 46b drives the ejector ram 46c to reciprocate in the receiving cylinder 46 a.
As further shown in fig. 9 and 10, the front end surface of the tenon 46a1 of the receiving cylinder 46a is in an arc shape, and the arc shape is consistent with the arc shape of the inner wall of the injection cavity 42a3 of the feeding cylinder 42 a. The front end surface of the ejection punch 46c is arc-shaped, and the arc degree is consistent with the radian of the inner wall of the injection cavity 42a3 of the feeding barrel 42 a.
In order to enhance the tightness of the receiving cylinder after the discharge port is communicated with the opening of the receiving cylinder, further, as shown in fig. 11, in the full-vertical injection molding machine with open top and bottom according to the present invention, the opening 42a2 of the receiving cylinder 42a and the tenon 46a1 of the receiving cylinder 46a are in mutually matched ladder-shaped, and the discharge port 46a2 of the receiving cylinder 46a and the end part 46c1 of the ejecting punch 46c are in mutually matched ladder-shaped.
As further shown in fig. 9 and 10, in the full-vertical injection molding machine with upper and lower openings according to the present invention, the material accommodating component 46 has a T-shaped material accommodating cylinder 46a, and two sides of the front end of the material accommodating component are provided with arc surfaces 46a3 which are attached to and sealed with the outer wall of the material accommodating cylinder 42 a. Referring to fig. 9, two internal threaded holes 46a4 are symmetrically provided at the rear end of the material accommodating cylinder 46a, and the material accommodating cylinder 46a is fixedly supported in a T-shaped material accommodating groove 32c provided at the upper end surface of the fixed mold base plate 32 by bolts 46a5 provided on the internal threaded holes 46a 4.
In the vertical injection and bottom opening die casting machine, as shown in fig. 2 and 3, two lifting cylinders 35 drive a movable die base plate 33 to move up and down rapidly and a fixed die base plate 32 to complete the die opening and closing process, and four die locking cylinders 34 drive the movable die base plate 33 to move up and down slowly to complete the die locking process between the movable die plate 33a and the fixed die plate 32 a.
In the mold locking process of the vertical injection lower die-casting machine, in order to ensure that the mold locking force of the four mold locking cylinders uniformly acts on four corners of the movable mold base when the movable mold base plate is driven to move upwards, the phenomenon that the die casting machine is not tightly locked due to the fact that gaps are formed on any one of four sides of a parting surface connected with a movable mold plate and a fixed mold plate after the movable mold plate and the fixed mold plate are clamped when micro warping deformation occurs on the edge of the movable mold or residues are adhered to the edges of parting surfaces of the movable mold and the fixed mold plate is avoided.
Optionally, in the vertical injection and bottom opening die casting machine of the present invention, hydraulic sensors (not shown in the drawing) are respectively disposed on the four die locking cylinders, and when the four die locking cylinders drive the movable die base plate to move upwards slowly to perform die locking operation with the fixed die base plate, the hydraulic sensors monitor hydraulic pressure in the four die locking cylinders at any time, and transmit monitored data to an information processing system of the die casting machine at first time, and the information processing system timely adjusts hydraulic pressure in the four die locking cylinders by monitoring the data, so that four sides of a parting surface of the movable die plate and four sides of a parting surface of the fixed die plate are in close contact.
Further as an alternative fig. 3, the full-vertical injection and bottom-opening die casting machine of the invention is provided with a pressure sensing device between the upper end surface of a movable die base plate 33 and the upper end surface of a fixed die base plate 32, wherein the pressure sensing device comprises a pressure plate 3A and a pressing probe 3B. The platen 3A shown in the present embodiment is provided on four sides of the upper end face of the movable die plate 33, respectively, and the press-touch probes 3B are provided on four sides of the lower end face of the fixed die plate 32 in correspondence with the platen 3A.
After the die casting machine is assembled, the press-touch probe 3B is contacted with the piezoresistive substrate 3Aa of the pressure plate 3A, when the substrate is deformed due to the external force of the press-touch probe 3B, the resistance value can be changed, and the bridge can generate corresponding unbalanced output. The four pressure sensing devices respectively transmit the resistance value data to an information processing system of the die casting machine at the first time, and the information processing system timely adjusts the hydraulic pressure in the four die locking cylinders through the resistance values so that the four sides of the parting surfaces of the movable die plate and the fixed die plate are in close contact.
The vertical injection and vertical die casting method of the vertical injection and vertical die casting machine of the present invention will be further described with reference to the accompanying drawings and specific examples.
The invention relates to a feeding and vertical die casting method, which comprises the following steps of;
Step 1-mold closing, referring to FIG. 3 and FIG. 12, two lift cylinders 35 simultaneously drive the movable mold base plate 33 to move upward, and the parting surfaces of the movable mold plate 33a provided on the movable mold base plate 33 and the fixed mold plate 32a provided on the fixed mold base plate 32 are in contact.
Step 2—mold locking, referring to fig. 3 and 12, four mold locking cylinders 34 lift the movable mold base plate 33 to move slowly upwards, the mold locking cylinders 34 independently adjust the lifting distance of the piston rods, and when the parting surfaces of the movable mold plate 33a and the fixed mold plate 32a are fully contacted and sealed and the oil pressure values in the four mold locking cylinders 34 reach the preset pressure simultaneously, the oil pressure is locked simultaneously.
Step 3—stopper lifting, referring to fig. 13, the lifting cylinder 45a lifts the stopper 45b from the initial point of the parting surface movement of the movable mold plate 33a to the end point of the movement of the lower end of the gate sleeve 32b of the fixed mold plate 32a, and seals the injection cavity 42a3 of the gate sleeve 32 b.
Step 4-liquid injection, referring to FIG. 12, the soup feeder pours the molten metal from the funnel-shaped outer gate 42a1 of the feed cylinder 42a into the injection cavity 42a3 of the feed cylinder 42a of the injector assembly 42.
Step 5—a rapid injection, referring to fig. 12 of fig. 4, the hydraulic cylinder assembly 43 drives the injection rod 42b and the injection punch 42c to move downward in the injection cavity 42a3 of the feed cylinder 42a, and after the injection punch 42c extrudes and discharges the air in the injection cavity 42a3 of the feed cylinder 42a, the hydraulic cylinder assembly 43 stops working after the bottom of the injection punch 42c is fully contacted with the metal solution in the injection cavity 42a 3.
Step 6—three-speed injection and stopper return, referring to fig. 13, after the bottom end of the injection punch 42c is fully contacted with the molten metal in the injection cavity 42a3 of the feed cylinder 42a, the hydraulic cylinder assembly 43 (referring to fig. 4) drives the injection rod 42b and the injection punch 42c to move downward in the injection cavity 42a3 of the feed cylinder 42a, and the lifting cylinder 45a rapidly decompresses and drives the stopper 45b to rapidly descend from the lower end movement termination point of the gate sleeve 32b of the fixed mold plate 32a to the parting surface movement initiation point of the movable mold plate 33a while the injection punch 42c moves downward. The stopper 45b seals the punch hole 331 at the parting surface end of the movable platen 33a, and the metal solution in the injection cavity 42a3 of the feed cylinder 42a is injected into the mold cavity formed between the movable platen 33a and the fixed platen 32 a.
Step 7—boost, referring to fig. 4 and 13, the accumulator assembly 44 continuously increases the pressure to the boost piston in the hydraulic cylinder assembly 43, and the hydraulic cylinder assembly 43 continuously drives the injection punch 42c of the injection rod 42b to continuously increase the pressure to the metal solution in the mold cavity between the movable mold plate 33a and the fixed mold plate 32 a.
The pressurizing process is used for promoting the die castings in the die cavities of the movable die plate 33a and the fixed die plate 32a to solidify under the action of pressure, and the liquid or semi-solid metal solution in the die cavities can reduce shrinkage cavities and bubbles in the die castings under the action of pressure, so that the quality of the surfaces of finished products of the die castings is improved.
Step 8, die opening and ejection, referring to fig. 7 and 14, after the die casting is initially cooled and formed in the die cavities of the movable platen 33a and the fixed platen 32a, the hydraulic cylinder assembly 43 (refer to fig. 4) drives the injection rod 42b and the injection punch 42c to return to the initial positions in the injection cavity 42a3 of the feed cylinder 42 a. The two lifting cylinders 35 simultaneously drive the movable die plate 33 and the movable die plate 33a arranged on the movable die plate 33 to move downwards, the ejector pins 37c of the ejector device 37 penetrate into the movable die plate 33 and the movable die plate 33a through the ejector pin holes 33a1, the movable die plate 33 and the movable die plate 33a stop when moving to initial positions of the movable die plate 33 and the movable die plate 33a, and the die casting machine completes die opening operation. The ejector cylinder 37a of the ejector 37 drives the ejector pin connecting plate 37b and the ejector pin 37c to move upwards, and the ejector pin 37c extends out of the die cavity of the movable die plate 33a through the ejector pin holes 33a1 of the movable die plate 33 and the movable die plate 33a to eject the die casting from the product position of the movable die plate 33 a.
The invention relates to a feeding and vertical die casting method, which comprises the following steps of;
step 1-mold closing, referring to FIG. 3 and FIG. 12, two lift cylinders 35 simultaneously drive the movable mold base plate 33 to move upward, and the parting surfaces of the movable mold plate 33a provided on the movable mold base plate 33 and the fixed mold plate 32a provided on the fixed mold base plate 32 are in contact.
Step 2—mold locking, referring to fig. 3 and 12, four mold locking cylinders 34 lift the movable mold base plate 33 to move slowly upwards, the mold locking cylinders 34 independently adjust the lifting distance of the piston rods, and when the parting surfaces of the movable mold plate 33a and the fixed mold plate 32a are fully contacted and sealed and the oil pressure values in the four mold locking cylinders 34 reach the preset pressure simultaneously, the oil pressure is locked simultaneously.
Step 3—stopper lifting, referring to fig. 13, the lifting cylinder 45a lifts the stopper 45b from the initial point of the parting surface movement of the movable mold plate 33a to the end point of the movement of the lower end of the gate sleeve 32b of the fixed mold plate 32a, and seals the injection cavity 42a3 of the gate sleeve 32 b.
Step 4—injecting and holding, referring to fig. 12 and 15, the soup feeder injects the metal solution into the injection cavity 42a3 of the injection molding assembly 42 from the funnel-shaped external gate 42a1 of the injection molding assembly 42 into the injection molding cavity 42a3 of the injection molding assembly 42a, the ejection cylinder 46b of the holding assembly 46 drives the ejection punch 46c to move backward in the holding cylinder 46a, and when the volume of the space formed in the holding cylinder 46a reaches a preset threshold value, the ejection cylinder 46b stops driving the ejection punch 46 c. The metal solution flows into the containing cylinder 46a through the feeding cylinder 42a, and the injection is stopped when the metal solution in the feeding cylinder 42a and the containing cylinder 46a conforms to a preset volume.
Step 5—a rapid injection, referring to fig. 12, the hydraulic cylinder assembly 43 (referring to fig. 4) drives the injection rod 42b and the injection punch 42c to move downward in the injection cavity 42a3 of the feed cylinder 42a, and after the injection punch 42c extrudes and discharges the air in the injection cavity 42a3 of the feed cylinder 42a, the hydraulic cylinder assembly 43 stops working after the bottom of the injection punch 42c is fully contacted with the metal solution in the injection cavity 42a 3.
Step 6—two-speed injection and pressurization, referring to fig. 16, the ejector cylinder 46b of the receiving component 46 drives the ejector punch 46c to move forward in the receiving cylinder 46a, the ejector punch 46c ejects the metal solution in the receiving cylinder 46a into the feeding cylinder 42a, and the ejector cylinder 46b drives the front end of the ejector punch 46c to seal the opening 42a2 of the receiving cylinder 46a and stop working. Referring to fig. 13, the lift cylinder 45a drives the stopper 45b to move downward from the lower end of the sprue bush 32b of the fixed die plate 32a while the ejector punch 46c moves forward. Referring to fig. 4, the accumulator assembly 44 continues to increase pressure in the ram cylinder 46b of the containment assembly 46, the ram cylinder 46b driving the ram punch 46c to seal and lock the containment cylinder 46a opening 42a 2.
Step 7—three-speed injection, stopper return, referring to fig. 13, after the bottom end of the injection punch 42c is fully contacted with the metal solution in the injection cavity 42a3 of the feed cylinder 42a, the hydraulic cylinder assembly 43 (referring to fig. 4) drives the injection rod 42b and the injection punch 42c to move downward in the injection cavity 42a3 of the feed cylinder 42a, and the lifting cylinder 45a rapidly decompresses and drives the stopper 45b to rapidly descend from the lower end movement termination point of the gate sleeve 32b of the fixed mold plate 32a to the parting surface movement initiation point of the movable mold plate 33a while the injection punch 42c moves downward. The stopper 45b seals the punch hole 331 at the parting surface end of the movable platen 33a, and the metal solution in the injection cavity 42a3 of the feed cylinder 42a is injected into the mold cavity formed between the movable platen 33a and the fixed platen 32 a.
Step 8—boost, referring to fig. 4 and 13, the accumulator assembly 44 continuously increases the pressure to the boost piston in the hydraulic cylinder assembly 43, and the hydraulic cylinder assembly 43 continuously drives the injection punch 42c of the injection rod 42b to continuously increase the pressure to the metal solution in the mold cavity between the movable mold plate 33a and the fixed mold plate 32 a.
Step 9—mold opening and ejection, referring to fig. 7 and 14, after the die cast is initially cooled and molded in the mold cavities of the movable platen 33a and the fixed platen 32a, the hydraulic cylinder assembly 43 (referring to fig. 4) drives the injection rod 42b and the injection punch 42c to return to the initial positions in the injection cavity 42a3 of the feed cylinder 42 a. The two lift cylinders 35 simultaneously drive the movable die plate 33 and the movable die plate 33a provided on the movable die plate 33 to move downward, and stop the die casting machine to complete the die opening operation when the fixed die plate 32a and the movable die plate 33a move to their initial positions. The ejector cylinder 37a of the ejector 37 drives the ejector pin connecting plate 37b and the ejector pin 37c to move upwards, and the ejector pin 37c extends out of the die cavity of the movable die plate 33a through the ejector pin holes 33a1 of the movable die plate 33 and the movable die plate 33a to eject the die casting from the product position of the movable die plate 33 a.
In the two embodiments of the present invention, a vertical injection molding method is provided;
the first-speed injection is low-speed injection, the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in the injection cavity of the feeding cylinder at a speed of 10-20 cm/s, and the low-speed injection is used for preventing the metal solution from splashing out of the funnel-shaped outer gate, and meanwhile, air in the injection cavity of the feeding cylinder has sufficient time to escape, and the metal solution is accumulated on the front edge of the inner gate of the fixed template.
The second-speed injection is medium-speed injection, and the ejection cylinder drives the ejection punch to move forwards in the material containing cylinder at a speed of 20-30 cm/s so that the metal solution in the material containing cylinder rapidly enters the material feeding cylinder through a discharge hole of the material containing cylinder.
The three-speed injection is high-speed injection, the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in the injection cavity of the feeding cylinder at the speed of 40-55 cm/s, so that the metal solution can rapidly fill the mold cavities of the movable mold plate and the fixed mold plate through the inner gate.
The pressurizing procedure is used for promoting the die castings in the cavities of the movable die plate and the fixed die plate to solidify under the action of pressure, and the liquid or semi-solid metal solution in the die cavities can reduce shrinkage cavities and bubbles in the die castings under the action of pressure, so that the quality of the surfaces of finished products of the die castings is improved.
The foregoing is a detailed description of a vertical injection molding machine with lower opening and die casting method according to embodiments of the present invention, and it will be apparent to those skilled in the art that modifications may be made in the specific embodiments and application ranges according to the concepts of the embodiments of the present invention. The above description should not be construed as limiting the invention, but any changes made according to the design concept of the invention are within the scope of the invention.
Claims (10)
1. A vertical upper-feeding lower-opening mould pressing casting machine comprises a lower frame body, a bearing table, a mould opening and closing mechanism and a mould pressing mechanism, and is characterized in that,
the mold opening and closing mechanism comprises a mold opening and closing mechanism,
four tie bars vertically connected with the upper part of the bearing table, a fixed die seat plate fixedly arranged at the top end of the tie bars, a movable die seat plate sleeved on the tie bar column in a sliding way, four die locking cylinders arranged below the bearing table and with piston rods I connected with the bottom surface of the movable die seat plate, two lifting cylinders arranged below the bearing table and with piston rods II connected with two sides of the movable die seat plate,
the ejection device is arranged at the upper end of the bearing table or at the lower end of the movable die base plate through the plate connecting frame;
the injection mechanism comprises a pressing mechanism body and a pressing mechanism body, wherein the pressing mechanism body comprises a pressing mechanism body,
the plunger rod assembly is arranged on the movable die seat plate and moves up and down along with the movable die plate and consists of a jacking cylinder, a plunger rod and a screw rod, a piston rod of the jacking cylinder and the plunger rod move up and down in a punch hole arranged on the movable die seat plate and the movable die plate, the upper end face of the plunger rod is a movement starting point when the parting surface of the plunger rod is sealed and aligned with the parting surface of the movable die plate, and the upper end face of the plunger rod is a movement ending point when the upper end face of the plunger rod is bonded and sealed with the lower end of the pouring sleeve of the fixed die plate;
The injector assembly may comprise a plurality of injectors,
the injection plunger head arranged at the front end of the injection rod and the position of the injection plunger head higher than the upper end face of the fixed die seat plate are provided with funnel-shaped external pouring gates, and the injection plunger head in the injection assembly is linked with a stopper rod of the stopper rod assembly in the injection process of the die casting machine.
2. The full-vertical injection and bottom-opening die casting machine according to claim 1, wherein the ejection device comprises two ejection cylinders which are symmetrically arranged and connected with the bearing table through a plate connecting frame, an ejector pin connecting plate which is connected with the top end of a piston rod III of the ejection cylinder, and an ejector pin which penetrates through the movable die plate and the movable die plate, wherein the upper end face of the ejector pin connecting plate is provided with the ejector pin.
3. The full-vertical injection and lower die casting machine according to claim 1, wherein the ejection device comprises two ejection cylinders which are symmetrically arranged and connected with the movable die base plate through a plate connecting frame, an ejector pin connecting plate which is connected with the top end of a piston rod III of the ejection cylinder, and an ejector pin which penetrates through the movable die base plate and the movable die plate and moves up and down along with the movable die base plate.
4. The full-vertical injection and bottom-opening die casting machine according to claim 1, wherein the injection mechanism further comprises a material containing assembly which is arranged on the fixed die seat plate and connected with the material inlet cylinder and consists of a material containing cylinder, a top withdrawing cylinder and a material ejecting punch;
the cylinder wall of the feeding cylinder is provided with an opening, a tenon at the front end of the receiving cylinder is inserted into the injection cavity of the feeding cylinder through the opening, the tenon is in sealing connection with the outer wall of the opening, and a discharge hole of the receiving cylinder is communicated with the injection cavity of the feeding cylinder;
the front end face of the tenon of the containing cylinder and the front end face of the ejection punch are arc-shaped, and the arc degree is consistent with the radian of the inner wall of the injection cavity of the feeding cylinder.
5. The full-vertical injection and bottom-opening die casting machine according to claim 4, wherein the feed cylinder opening and the feed cylinder receiving tenons are in mutually matched ladder-shaped cones,
the discharge hole of the material containing cylinder and the head part of the ejection punch head are in a ladder-shaped shape which are matched with each other.
6. The full-vertical upper-injection lower-opening die casting machine according to claim 4 or 5, wherein the material containing cylinder is T-shaped, the front end of the material containing cylinder is provided with an arc-shaped surface which is jointed and sealed with the material containing cylinder, and the rear end of the material containing cylinder is symmetrically provided with two internal threaded holes;
The material containing cylinder is propped and fixed in a T-shaped groove arranged on the upper end face of the fixed die seat plate through a bolt arranged on the internal threaded hole.
7. The full-vertical injection and bottom-opening die casting machine according to claim 1, wherein hydraulic sensors are respectively arranged on the four die locking cylinders.
8. The full-vertical injection and bottom-opening die casting machine according to claim 1, wherein the upper end face of the movable die base plate and four sides of the lower end face of the fixed die base plate are respectively provided with a pressure sensing device and a pressing probe, and the pressing probe is contacted with a piezoresistive substrate of the pressure sensing device after the die casting machine is assembled.
9. A die casting method is characterized by comprising the following steps,
s1, die assembly is carried out, two lifting cylinders simultaneously drive a movable die base plate to move upwards, and a parting surface of a movable die plate arranged on the movable die base plate is contacted with a parting surface of a fixed die plate arranged on the fixed die base plate;
s2, locking the mold, wherein the top lifting mold base plates of the four mold locking cylinders move upwards, the mold locking cylinders independently adjust the lifting distance of piston rods of the mold locking cylinders, and when oil pressure values in the four mold locking cylinders reach preset pressure simultaneously, the oil pressure is locked simultaneously;
s3, jacking the stopper rod, namely jacking the stopper rod from a motion initial point of a parting surface of the movable template to a lower end motion termination point of a sprue bush of the fixed template, and sealing a sprue bush injection cavity;
S4, pouring the metal solution into the injection cavity of the feeding barrel of the injector assembly through the funnel-shaped external pouring gate of the feeding barrel;
s5, injecting at a first speed, driving an injection rod and an injection punch to move downwards in an injection cavity of the feeding barrel by the hydraulic cylinder assembly, extruding and discharging air in the injection cavity of the feeding barrel by the injection punch, and stopping working by the hydraulic cylinder assembly after the bottom of the injection punch is fully contacted with the metal solution in the injection cavity; s6, three-speed injection and stopper rod return, wherein after the bottom end of an injection punch fully contacts with the metal solution in an injection cavity of a feeding cylinder, a hydraulic cylinder assembly drives an injection rod and the injection punch to move downwards in the injection cavity of the feeding cylinder, a jacking cylinder rapidly drives the stopper rod to rapidly descend from a lower end movement termination point of a fixed template sprue bush to a movable template parting surface movement initial point while the injection punch moves downwards, the stopper rod seals a punch hole at the parting surface end of the movable template, and the metal solution in the injection cavity of the feeding cylinder is injected into a model cavity between the movable template and the fixed template;
s7, pressurizing, wherein the energy accumulator assembly continuously increases pressure to a pressurizing piston in the hydraulic cylinder assembly, and the hydraulic cylinder assembly continuously drives an injection punch of the injection rod to continuously increase pressure to the metal solution in a model cavity between the movable die plate and the fixed die plate;
S8, die sinking and ejection are carried out, after metal solution is initially cooled and formed in the die cavities of the movable die plate and the fixed die plate, the hydraulic cylinder assembly drives the injection rod and the injection punch to return to the initial position in the injection cavity of the feeding cylinder, the two lifting cylinders simultaneously drive the movable die base plate and the movable die plate arranged on the movable die base plate to move downwards, the ejector pin of the ejection device penetrates into the movable die base plate and the movable die plate through the ejector pin hole, the ejector cylinder of the ejection device drives the ejector pin connecting plate and the ejector pin to move upwards, and the ejector pin stretches out of the die cavity of the movable die plate through the ejector pin holes of the movable die base plate and the movable die plate to eject the die casting from the product position of the movable die plate.
10. A die casting method is characterized by comprising the following steps,
s1, die assembly is carried out, two lifting cylinders simultaneously drive a movable die base plate to move upwards, and a parting surface of a movable die plate arranged on the movable die base plate is contacted with a parting surface of a fixed die plate arranged on the fixed die base plate;
s2, locking the mold, wherein the top lifting mold base plates of the four mold locking cylinders move upwards, the mold locking cylinders independently adjust the lifting distance of piston rods of the mold locking cylinders, and when oil pressure values in the four mold locking cylinders reach preset pressure simultaneously, the oil pressure is locked simultaneously;
s3, jacking the stopper rod, namely jacking the stopper rod from a motion initial point of a parting surface of the movable template to a lower end motion termination point of a sprue bush of the fixed template, and sealing a sprue bush injection cavity;
S4, injecting liquid and containing materials, pouring the metal solution into an injection cavity of a feeding barrel of the injection device assembly through a hopper-shaped external pouring gate of the feeding barrel, driving a jacking punch to move backwards in the containing barrel by a jacking cylinder, enabling the metal solution to flow into the containing barrel through the feeding barrel, and stopping working and simultaneously injecting liquid when the metal solution in the feeding barrel and the containing barrel accords with a preset volume;
s5, injecting at a first speed, driving an injection rod and an injection punch to move downwards in an injection cavity of the feeding barrel by the hydraulic cylinder assembly, extruding and discharging air in the injection cavity of the feeding barrel by the injection punch, and stopping working by the hydraulic cylinder assembly after the bottom of the injection punch is fully contacted with the metal solution in the injection cavity;
s6, performing two-speed injection and pressurization, wherein a pushing cylinder drives a pushing punch to move forwards in the material containing cylinder, the pushing punch pushes metal solution in the material containing cylinder into the material feeding cylinder, the pushing cylinder drives the front end of the pushing punch to seal the hole of the material containing cylinder and then stop working, the pushing punch moves forwards, and meanwhile, the pushing cylinder drives a stopper rod to move downwards from the lower end of a fixed template sprue bush, the pressure of an energy accumulator component is continuously increased in the pushing cylinder of the material containing component, and the pushing cylinder drives the pushing punch to seal the hole of the material containing cylinder and then lock the hole;
S7, three-speed injection and stopper rod return, wherein the hydraulic cylinder assembly drives the injection rod and the injection punch to move downwards in an injection cavity of the feeding barrel, the lifting cylinder rapidly drives the stopper rod to rapidly descend from the lower end of the fixed template sprue bush and return to an initial point of the movement of the parting surface of the movable template when the injection punch moves downwards, the stopper rod seals a punch hole at the parting surface end of the movable template, and metal solution in the injection cavity of the feeding barrel is injected into a model cavity formed between the movable template and the fixed template;
s8, pressurizing, wherein the energy accumulator assembly continuously increases pressure to a pressurizing piston in the hydraulic cylinder assembly, and the hydraulic cylinder assembly continuously drives an injection punch of the injection rod to continuously increase pressure to the metal solution in a model cavity between the movable die plate and the fixed die plate;
s9, mold opening and ejection, after metal solution is initially cooled and molded in the mold cavities of the movable mold plate and the fixed mold plate, a hydraulic cylinder assembly drives a injection rod and an injection punch to return to the initial positions in the injection cavity of the feeding cylinder, two lifting cylinders simultaneously drive the movable mold base plate and the movable mold plate arranged on the movable mold base plate to move downwards, a thimble of an ejection device penetrates into the movable mold base plate and the movable mold plate through a thimble hole, the ejection cylinder of the ejection device drives the thimble connecting plate and the thimble to move upwards, and the thimble stretches out of the mold cavity of the movable mold plate through the thimble hole of the movable mold base plate and the thimble to eject a die casting from a product position of the movable mold plate.
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| CN2023113762676 | 2023-10-23 | ||
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025179613A1 (en) * | 2024-02-27 | 2025-09-04 | 浙江万丰科技开发股份有限公司 | Four-corner-driven high-torque mold-opening mechanism and casting machine |
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2023
- 2023-12-25 CN CN202311785094.3A patent/CN117505808A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025179613A1 (en) * | 2024-02-27 | 2025-09-04 | 浙江万丰科技开发股份有限公司 | Four-corner-driven high-torque mold-opening mechanism and casting machine |
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