CN104275465A - Double-seal plunger for material injection device of die casting machine and material injection device - Google Patents
Double-seal plunger for material injection device of die casting machine and material injection device Download PDFInfo
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- CN104275465A CN104275465A CN201410471874.5A CN201410471874A CN104275465A CN 104275465 A CN104275465 A CN 104275465A CN 201410471874 A CN201410471874 A CN 201410471874A CN 104275465 A CN104275465 A CN 104275465A
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- plunger
- stopper head
- injection device
- material injection
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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
- B22D17/203—Injection pistons
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Abstract
The invention relates to a double-seal plunger for a material injection device of a die casting machine and the material injection device. The double-seal plunger comprises a plunger rod and a plunger head, wherein the side wall of the plunger head is provided with a first sealing part, the first sealing part is in sliding seal with the inner wall of a material cylinder, the plunger head is provided with a hollow cavity, the hollow cavity is provided with an opening which is communicated with a pressure chamber in front of the plunger head, the first sealing part is positioned on a sheet area with certain deformation capability between the hollow cavity and the outer wall surface of the plunger head, one end, away from the plunger head, of the plunger rod is provided with a second sealing part, and the second sealing part is in sliding seal with the inner wall of the material cylinder. The double-seal plunger has the advantages that the sealing effect is good; the double-seal plunger is applied to high-pressure die casting equipment; for the material injection device using the double-seal plunger, the die casting cycle is shortened, the production efficiency is improved, the temperature of molten metal liquid during die casting is lowered, the softening and cracking of a die are avoided, and the service life of the die is prolonged.
Description
Technical field
The present invention relates to a kind of double containment plunger on material injection device of die casting machine and material injection device, belong to die-casting technique field.
Background technology
Die casting is that a kind of fused solution of alloy is injected barrel, is then mapped in die cavity by the plunger be arranged in barrel by a certain amount of alloy molten hydraulic pressure, and cooling aftershaping forms foundry goods.
Barrel in tradition die casting equipment can only to be annotated a certain amount of molten metal bath according to the size of foundry goods, and after shooting material, plunger return to initial position, and again adds quantitative molten metal bath and carries out die casting next time in barrel.As Chinese patent literature CN201231307Y discloses a kind of vacuum material injection device, described vacuum material injection device comprises drive part, injection part, head plate and barrel, barrel is provided with the plug hole be communicated with working chamber, head plate is provided with through hole, barrel is arranged in the through hole of a plate, injection parts are driven by drive part, the end penetrating pressure part is provided with tup (plunger head), this tup and material tube inner wall are slidably matched, and under the promotion of drive unit by the molten metal bath injection in barrel in die cavity.This material injection device all needs interpolation molten metal bath when each injection foundry goods, this just extends the die casting cycle of foundry goods, reduces production efficiency, in addition, because the molten metal bath of high temperature enters after in barrel from working chamber, run into colder material tube inner wall and its temperature of tup can reduce, even injection can be affected, therefore, need molten metal bath to be heated to higher temperature (general aluminium alloy needs to be heated to more than 650 degree) in working chamber, and barrel and tup generally all adopt H13 steel to make, annealing temperature interval is entered when H13 steel is more than 650 degree, if now the molten metal bath of higher temperature is injected in mould, the hardness of mould then can be made to reduce, mould deliquescing will be made after Reusability even to crack, have a strong impact on the mold use life-span.
Summary of the invention
For this reason, the barrel that technical problem to be solved by this invention is to overcome existing die casting equipment can only inject at every turn single-piece foundry goods molten metal bath, the die casting cycle is long, production efficiency is low and the mould deliquescing easily making H13 steel make even cracks, and then have a strong impact on the technological deficiency in its service life, thus provide a kind of double containment plunger on material injection device of die casting machine and material injection device.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of double containment plunger on material injection device of die casting machine, it comprises plunger rod and stopper head, the sidewall of described stopper head is provided with the first sealing with material tube inner wall slipper seal, described stopper head has cavity, described cavity has the opening be communicated with the balancing gate pit in stopper head front, and what described first sealing was formed between described cavity and described stopper head outside wall surface has in the thin slice district of certain deformability; One end away from described stopper head of described plunger rod is provided with the second sealing, described second sealing and described material tube inner wall slipper seal.
Described first sealing is the seal convexity of at least one annular be molded on described stopper head lateral wall.
The both sides of described seal convexity are respectively arranged with annular groove, and described annular groove and described seal convexity circumference be arranged in parallel.
Described seal convexity is provided with twice, and spaced apart by one described annular groove between seal convexity described in twice.
The outline of described seal convexity is arc-shaped structure; The longitudinal cross-section semicircular in shape of described annular groove.
The described opening part of described cavity is provided with the stopping means for limiting described cavity excessive expansion or excess shrinkage.
Described stopping means comprises the dividing plate on the end face being fixed on described stopper head, and the push rod be arranged in described cavity, one end of described push rod is fixed on the bottom of described cavity, the other end of described push rod is conflicted on described dividing plate, between described dividing plate and described end face, and described dividing plate or there is between described push rod and the opening of described stopper head the gap being communicated with described balancing gate pit and described cavity.
The area of described dividing plate is substantially equal with the area of the end face of described stopper head, and described dividing plate is bolted on the described end face of described stopper head by some.
Described push rod extends the end face of described stopper head from the opening part of described cavity, and the center, side coordinated with described push rod of described dividing plate is provided with groove, and described push rod inserts in described groove.
The one end side coordinated with described cavity of described push rod offers screw thread, and axle center place, described cavity bottom offers screw, and described push rod coordinates the bottom screwing in described cavity also fixing by screw thread with screw.
The other end of described plunger rod is provided with the second stopper head, and the second sealing is arranged on described second stopper head, and described second stopper head and described stopper head are relative to the central point of the length direction of described plunger rod.
A kind of material injection device, it plunger comprising barrel and move reciprocatingly in the inner chamber of described barrel, described plunger is connected with drive unit, and described plunger is the plunger described in above-mentioned any one.
Technique scheme of the present invention has the following advantages compared to existing technology:
1. the two ends of the double containment plunger on material injection device of die casting machine of the present invention are respectively equipped with the first sealing and the second sealing, and the first sealing in described stopper head thin slice district shrink with cavity and and produce gap between material tube inner wall, balancing gate pit is entered from pressure-less chamber for molten metal bath, or expand with cavity and strengthen the sealing property with material tube inner wall, and the larger sealing property of the pressure that shoots material is better; Adopt the material injection device of double containment plunger of the present invention can inject the molten metal of melting from the pressure-less chamber of the formation between the first sealing, the second sealing, plunger rod and material tube inner wall in trend balancing gate pit, greatly reduce the die casting cycle, improve production efficiency; In addition, adopt the material injection device of double containment plunger of the present invention, its barrel and plunger are equal with the temperature of molten metal bath all the time, therefore can reduce the temperature of the molten metal in die casting progressive die chamber, and then prevent mould deliquescing, cracking, the mold use life-span can be extended.
2. the double containment plunger on material injection device of die casting machine of the present invention, its first sealing is the seal convexity of at least one annular be molded on stopper head lateral wall, sealing projection can not only reduce the frictional force of plunger in barrel in reciprocatory movement, reduce wear, can also sealing property be improved simultaneously.
3. the double containment plunger on material injection device of die casting machine of the present invention, its seal convexity both sides are provided with annular groove, and described annular groove and seal convexity circumference be arranged in parallel, sealing groove, while raising thin slice district deformability, can also guarantee the sealing property between seal convexity and material tube inner wall.
4. the double containment plunger on material injection device of die casting machine of the present invention, the opening part of its cavity is provided with the stopping means for limiting cavity excessive expansion or excess shrinkage, by arranging this stopping means, can not only ensure that stopper head has good working order, can also prevent because the pressure that shoots material is excessive and make plunger stuck simultaneously.
5. the double containment plunger on material injection device of die casting machine of the present invention, the two ends of its plunger rod are respectively equipped with stopper head and the second stopper head, and make the second stopper head and stopper head relative to the central point of the length direction of plunger rod, also namely described stopper head is consistent with the structure of described second stopper head, and this setup is convenient to assembling, is safeguarded.
6. material injection device of the present invention comprises barrel and double containment plunger, traditional cold chamber die casting equipment can apply material injection device of the present invention without the need to spending more cost or making compared with macrostructure change, and material injection device of the present invention can shorten the die casting cycle, enhance productivity, the temperature of the molten metal that shoots material can be reduced, for the molten metal bath of metallic aluminium, the molten metal bath of comparable traditional die casting equipment reduces about 50 degree, therefore can effectively prevent mould deliquescing, cracking, greatly extend the mold use life-span.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of double containment plunger of the present invention;
Fig. 2 is the sectional view of double containment plunger of the present invention;
Fig. 3 is the structural representation of the stopper head of double containment plunger of the present invention;
Fig. 4 is plunger in material injection device of the present invention structural representation when being positioned at initial position;
Fig. 5 be the plunger of material injection device of the present invention be positioned at maximum shoot material position time structural representation.
In figure, Reference numeral is expressed as:
10-barrel; 100-balancing gate pit; 101-pressure-less chamber; 105-discharging opening; 20-plunger rod; 21-stopper head; 21 '-the second stopper head; 22,22 '-cavity; 23,23 '-thin slice district; 24-seal convexity; 24 '-the second sealing; 240,240 '-annular groove; 25,25 '-push rod; 26,26 '-end face; 27,27 '-dividing plate; 28,28 '-gap.
Detailed description of the invention
Embodiment one
See Fig. 1-3, a kind of double containment plunger on material injection device of die casting machine, it comprises plunger rod 20 and stopper head 21, the sidewall of described stopper head 21 is provided with the first sealing with the slipper seal of barrel 10 inwall, described stopper head 21 has cavity 22, described cavity 22 has the opening be communicated with the balancing gate pit 100 in stopper head 21 front, what described first sealing was formed between described cavity 22 and described stopper head 21 outside wall surface has in the thin slice district 23 of certain deformability, known see Fig. 2, described cavity 22 is along the axially basic one-tenth " cydariform " of described plunger, the largest diameter of intermediate position, therefore described stopper head 21 is the thinnest at the wall thickness in the axial centre position of described cavity 22, be thin slice district 23 herein, one end away from described stopper head 21 of described plunger rod 20 is provided with the second sealing 24 ', described second sealing 24 ' and described material tube inner wall slipper seal.
By the two ends at described plunger, the first sealing and the second sealing 24 ' are set respectively, after described plunger is assembled to the inner chamber of described barrel 10, described first sealing, described second sealing 24 ', the pressure-less chamber 101 for depositing molten metal bath is formed between the inwall of described plunger rod 20 and described barrel 10, simultaneously, one is offered for injecting the running channel of molten metal bath in described pressure-less chamber in the position corresponding with described pressure-less chamber 101 of barrel 10, described running channel is communicated to Metal Melting room, or adopt scoop filling, to ensure the molten metal being full of melting in described pressure-less chamber all the time, first the molten metal of melting will be all full of in described balancing gate pit 100 and described pressure-less chamber 101 when first time uses, then promote described plunger be pushed into the maximum position that shoots material complete first time shoot material, now due to the molten metal cooling forming in mould and mould pouring basin, the described mouth 105 that shoots material is closed, when described plunger moves backward, the space of described balancing gate pit 100 increases gradually, and form relative vacuum, cavity 22 now in described stopper head 21 can shrink to axle center place, and then make to produce a gap between described first sealing 24 and described material tube inner wall, under the effect of pressure reduction, molten metal bath in pressure-less chamber 101 can flow in described balancing gate pit 100 along described gap, simultaneously, in the described pressure-less chamber 101 that the molten metal bath of described Metal Melting indoor then can supplement endlessly, when described plunger moves to initial position backward, all molten metal bath is full of in described balancing gate pit 100 and described pressure-less chamber 101, after this continuous casting operation can be carried out.
Because the opening of cavity 22 is communicated with balancing gate pit 100, when piston carries out shooting material action, the molten metal bath of squeeze pressure indoor 100, and the motlten metal hydraulic coupling in described balancing gate pit 100 is raised, the pressure of the molten metal bath simultaneously in cavity 22 also synchronously raises, now described cavity 22 can expand a certain amount of, and injection pressure is higher, the swell increment of cavity 22 is larger, because stopper head 21 is provided with thin slice district 23, the expansion of described cavity 22 is the most obvious in the outside in thin slice district 23, and the arranged outside in thin slice district 23 has the seal convexity 24 of annular, therefore, tightly can conflict on the inwall of barrel 10 along with the expansion of described cavity 22 in the seal convexity 24 of described annular, to strengthen the sealing property between seal convexity 24 and material tube inner wall 10.And due to the contact area between seal convexity 24 and barrel 10 inwall less, rub less, therefore with the increase of injection pressure, the motion of plunger in barrel 10 can't be affected.
As can be seen from above-mentioned, the two ends of described plunger are arranged respectively the first sealing and the second sealing, and make described first sealing be arranged in the thin slice district 23 of described stopper head 21, greatly can shorten casting cycle on the one hand, because when described plunger shoot material complete get back to initial position time, the molten metal of melting has all been filled with in described balancing gate pit 100 and described pressure-less chamber 101, namely for shooting material next time is got ready while it gets back to initial position, therefore shorten die casting time, its production efficiency improves greatly, on the other hand, owing to defining pressure-less chamber 101 between plunger and the inwall of barrel 10, and pressure-less chamber 101 is all full of the molten metal of melting in whole material shooting process, therefore the inwall of barrel 10 has identical temperature with the molten metal of plunger body and melting, do not have obvious temperature from the molten metal bath of the indoor inflow of described Metal Melting to reduce, therefore when casting aluminum product, the temperature of molten metal solutions (aluminium) in barrel 10 is convenient to control at about 600 degree, also namely molten metal bath (aluminium) temperature injected in die cavity is 600 degree substantially, mould deliquescing because of annealing that this temperature can not make employing H13 steel make, cracking, and then substantially prolongs die life.
In the present embodiment, described first sealing is the seal convexity 24 of the twice annular be molded on described stopper head 21 lateral wall.Because between described seal convexity 24 and the inwall of described barrel 10, contact area is less, therefore the frictional force of plunger when moving back and forth is less, and wearing and tearing are comparatively light, and good sealing effect, seal convexity 24 described in twice is set and then can strengthens sealing property further.
In the present embodiment, the both sides of described seal convexity 24 are respectively arranged with annular groove 240, and spaced apart by one described annular groove 240 between seal convexity 24 described in twice, and described annular groove 240 be arranged in parallel with described seal convexity 24 circumference.Described annular groove 240 forms continuous print wavelike structure with described seal convexity 24 on the surface of described stopper head 21, and (axis along described plunger is partly cutd open, can obviously see wavy structure, see Fig. 2), and thickness is the thinnest part in described thin slice district 23 between described annular groove 240 and the inwall of described cavity 22, by arranging described annular groove 240, the deformability in thin slice district 23 can be strengthened further, and then make the elastic packing better effects if of described first sealing.
In the present embodiment, the outline of described seal convexity 24 is arc-shaped structure, is linear contact lay substantially during the contact internal walls of this structure and described barrel 10, and the force of sliding friction between the inwall that greatly can reduce described plunger and described barrel 10, reduces wearing and tearing; And the longitudinal cross-section semicircular in shape of described annular groove 240, be then conducive to described thin slice district 23 and be out of shape.
In the present embodiment, the described opening part of described cavity 22 is provided with the stopping means for limiting the excessive expansion of described cavity 22 or excess shrinkage.Described stopping means comprises the dividing plate 27 on the end face 26 being fixed on described stopper head 21, and the push rod 25 be arranged in described cavity 22, one end of described push rod 25 is fixed on the bottom of described cavity 22, the other end of described push rod 25 is conflicted on described dividing plate 27, has the gap 28 being communicated with described balancing gate pit 100 and described cavity 22 between described dividing plate 27 with described end face 26.By arranging described stopping means; described stopper head 23 excessive expansion when injection pressure can be prevented excessive; even by stuck for described plunger; or described stopper head 23 excess shrinkage when preventing the vacuum in described balancing gate pit 100 excessive; exceed the normal elastic returning scope in described thin slice district 23; therefore, described stopping means can damage by the available protecting stopper head 21 with deformability, and then increases the service life.
In the present embodiment, the area of described dividing plate 27 is substantially equal with the area of the end face 26 of described stopper head 21, and described dividing plate 27 is bolted on the described end face 26 of described stopper head 21 by some so that assembling, maintenance.
In the present embodiment, described push rod 25 extends the end face 26 of described stopper head 21 from the opening part of described cavity 22, the center, side coordinated with described push rod 25 of described dividing plate 27 is provided with groove, described push rod 25 inserts in described groove, and described groove is convenient to described push rod 25 and described dividing plate 27 relative positioning.
In the present embodiment, the one end side coordinated with described cavity 22 of described push rod 25 offers screw thread, axle center place, described cavity 22 bottom offers screw, described push rod 25 coordinates the bottom screwing in described cavity 22 also fixing by screw thread with screw, adopts threaded screw bore to coordinate the assembling being convenient to described push rod 25.
Dividing plate 27 described in the present embodiment and leave certain gap 28 between described end face 26, between described push rod 25 and the opening of described stopper head 21, described gap 28 is communicated with described balancing gate pit 100 and described cavity 22, and described molten metal can flow between described balancing gate pit 100 and described cavity 22; Certainly, by the size in the described gap 28 of adjustment, molten metal can also be made when flowing through described gap 28 to have certain damping action, and then also can prevent the excessive expansion of described cavity 22 or contraction.
Embodiment two
Described second sealing 24 ' in above-described embodiment one is only used to prevent the molten metal bath in pressure-less chamber 101 from flowing out outside described barrel 10 from the afterbody of described plunger, and therefore described second sealing 24 ' is common plunger seal mode.Be installed in described barrel 10 for the ease of double containment plunger of the present invention, and guarantee that described plunger has comparatively stable operation fortune state in barrel 10, on the basis of above-described embodiment one, in the present embodiment, the other end of described plunger rod 20 is provided with the second stopper head 21 ', described second sealing 24 ' is arranged on described second stopper head 21 ', described second stopper head 21 ' and the central point of described stopper head 21 relative to the length direction of described plunger rod 20, also namely described second stopper head 21 ' is consistent with the structure of described stopper head 21, when this setup is conducive to ensureing that described plunger runs in described barrel 10, the sealing at its two ends is substantially equal with material tube inner wall frictional force, can comparatively steadily surely move back and forth along axis direction, and then guarantee accurate die casting, and where necessary, described stopper head 21 can also be exchanged installation site with described second stopper head 21 '.
See Fig. 1-2, the concrete structure of described second stopper head 21 ' is: it comprises cavity 22 ', thin slice district 23 ' is formed between the lateral wall of described cavity 22 ' and described stopper head, described thin slice district 23 ' is provided with two seals projection, separated by one annular groove 240 ' between seal convexity described in two, described two seals projection is described second sealing 24 ', the push rod 25 ' be threaded also is provided with in described cavity 22 ', described push rod 25 ' is against in the central slot of dividing plate 27 ', gap 28 ' is formed between the end face 26 ' of described dividing plate 27 ' and the second stopper head 21 '.
Embodiment three
See Fig. 4-5, a kind of material injection device, it plunger comprising barrel 10 and move reciprocatingly in the inner chamber of described barrel 10, described plunger is connected with drive unit, and described plunger is arbitrary described plunger in above-described embodiment one or embodiment two.
See Fig. 4, now described plunger is positioned at initial position, the molten metal of melting is all full of in described balancing gate pit 100 and described pressure-less chamber 101, described and the pressure of molten metal bath now in described balancing gate pit 100 and described pressure-less chamber 101 is substantially equal, during die casting, driving mechanism drives described plunger to left movement, the pressure of the metallic solution simultaneously in described stopper head 21 left pressure chamber 100 raises, and the molten metal bath in described balancing gate pit 100 enters in cavity 22 from gap 28, described cavity 22 radially outwards expands (direction of arrow see in Fig. 5 cavity 22) under the effect of the molten metal bath of high pressure, make the inwall close contact of the first sealing on stopper head and barrel 10, and the pressure that shoots material is larger, sealing effectiveness between the inwall of the first sealing and barrel 10 is better.
See Fig. 5, now described plunger motion is to the maximum position that shoots material, shoot material release, now fill the molten metal of melting in mould, when described plunger moves right, due to the metal blocking that mouth 105 place that shoots material is cooled, the space of balancing gate pit 100 becomes large, form relative vacuum, now cavity 22 can radially shrink to axle center place, and then make, between the first sealing 24 and material tube inner wall 10, there is a gap, molten metal bath in pressure-less chamber 101 adds in described balancing gate pit 100 along described gap under the effect of the pressure, when described plunger motion is to the initial position (position shown in Fig. 4, now due to the elastic force effect in thin slice district 23, described seal convexity 24 is outwards only by the wall of described barrel 10, the inwall of described barrel 10 applies to described seal convexity 24 reaction force that is pointed to axle center simultaneously, the direction of arrow see in Fig. 4 cavity 22) time, the molten metal of melting is all full of in described balancing gate pit 100 and described pressure-less chamber 101, in barrel, molten metal bath is added again to initial position without the need to plunger motion will be waited as traditional material injection device, therefore the fluid injection time can be saved, greatly shorten the die casting cycle, enhance productivity.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (12)
1. the double containment plunger on material injection device of die casting machine, it is characterized in that: comprise plunger rod (20) and stopper head (21), the sidewall of described stopper head (21) is provided with the first sealing with barrel (10) inwall slipper seal, described stopper head (21) has cavity (22), described cavity (22) has the opening be communicated with the balancing gate pit (100) in stopper head (21) front, described first sealing be positioned at formed between described cavity (22) and described stopper head (21) outside wall surface have in the thin slice district (23) of certain deformability, one end away from described stopper head (21) of described plunger rod (20) is provided with the second sealing (24 '), described second sealing (24 ') and described material tube inner wall slipper seal.
2. a kind of double containment plunger on material injection device of die casting machine according to claim 1, is characterized in that: described first sealing is the seal convexity (24) of at least one annular be molded on described stopper head (21) lateral wall.
3. a kind of double containment plunger on material injection device of die casting machine according to claim 2, it is characterized in that: the both sides of described seal convexity (24) are respectively arranged with annular groove (240), described annular groove (240) and described seal convexity (24) circumference be arranged in parallel.
4. a kind of double containment plunger on material injection device of die casting machine according to Claims 2 or 3, it is characterized in that: described seal convexity (24) is provided with twice, and by described annular groove (240) is spaced apart together between seal convexity described in twice (24).
5., according to the arbitrary described a kind of double containment plunger on material injection device of die casting machine of claim 2-4, it is characterized in that: the outline of described seal convexity (24) is arc-shaped structure; The longitudinal cross-section semicircular in shape of described annular groove (240).
6., according to the arbitrary described a kind of double containment plunger on material injection device of die casting machine of claim 1-5, it is characterized in that: the described opening part of described cavity (22) is provided with the stopping means for limiting (22) excessive expansion of described cavity or excess shrinkage.
7. a kind of double containment plunger on material injection device of die casting machine according to claim 6, it is characterized in that: described stopping means comprise be fixed on described stopper head (21) end face (26) on dividing plate (27), and the push rod (25) be arranged in described cavity (22), one end of described push rod (25) is fixed on the bottom of described cavity (22), the other end of described push rod (25) is conflicted on described dividing plate (27), between described dividing plate (27) and described end face (26), and described dividing plate (27) or have between described push rod (25) and the opening of described stopper head (21) is communicated with the gap (28) of described balancing gate pit (100) and described cavity (22).
8. a kind of double containment plunger on material injection device of die casting machine according to claim 7, it is characterized in that: the area of described dividing plate (27) is substantially equal with the area of the end face (26) of described stopper head (21), and described dividing plate (27) is bolted on the described end face (26) of described stopper head (21) by some.
9. a kind of double containment plunger on material injection device of die casting machine according to claim 7 or 8, it is characterized in that: described push rod (25) extends the end face (26) of described stopper head (21) from the opening part of described cavity (22), the center, side coordinated with described push rod (25) of described dividing plate (27) is provided with groove, and described push rod (25) inserts in described groove.
10. according to the arbitrary described a kind of double containment plunger on material injection device of die casting machine of claim 7-9, it is characterized in that: the one end side coordinated with described cavity (22) of described push rod (25) offers screw thread, described cavity (22) axle center, bottom place offers screw, and described push rod (25) coordinates the bottom screwing in described cavity (22) also fixing by screw thread with screw.
11. according to the arbitrary described a kind of double containment plunger on material injection device of die casting machine of claim 1-10, it is characterized in that: the other end of described plunger rod (20) is provided with the second stopper head (21 '), described second sealing (24 ') is arranged on described second stopper head (21 '), described second stopper head (21 ') and the central point of described stopper head (21) relative to the length direction of described plunger rod (20).
12. 1 kinds of material injection devices, it plunger comprising barrel (10) and move reciprocatingly in the inner chamber of described barrel (10), described plunger is connected with drive unit, it is characterized in that: described plunger is the arbitrary described plunger of the claims 1-11.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111971135A (en) * | 2018-05-22 | 2020-11-20 | 宇部兴产机械株式会社 | Injection device for die casting machine, structure of vacuum piping for die casting machine, and casting method |
| CN111989176A (en) * | 2018-07-03 | 2020-11-24 | 宇部兴产机械株式会社 | Injection device of die casting machine and casting method |
| CN114653920A (en) * | 2022-05-24 | 2022-06-24 | 常崟汽车配件南通有限公司 | Gooseneck device for hot casting and multi-slide die casting machine thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111971135A (en) * | 2018-05-22 | 2020-11-20 | 宇部兴产机械株式会社 | Injection device for die casting machine, structure of vacuum piping for die casting machine, and casting method |
| CN111989176A (en) * | 2018-07-03 | 2020-11-24 | 宇部兴产机械株式会社 | Injection device of die casting machine and casting method |
| CN114653920A (en) * | 2022-05-24 | 2022-06-24 | 常崟汽车配件南通有限公司 | Gooseneck device for hot casting and multi-slide die casting machine thereof |
| CN114653920B (en) * | 2022-05-24 | 2022-07-29 | 常崟汽车配件南通有限公司 | Gooseneck device for hot casting and multi-slide die casting machine thereof |
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| CN104275465B (en) | 2016-09-28 |
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Effective date of registration: 20230518 Address after: 215151 The First Complementary Industrial Park of No. 666 Jianlin Road Export Processing Zone, Suzhou High-tech Zone, Jiangsu Province Patentee after: Suzhou Shengmeite Die Casting Technology Co.,Ltd. Address before: 215151 The First Complementary Industrial Park of No. 666 Jianlin Road Export Processing Zone, Suzhou High-tech Zone, Jiangsu Province Patentee before: SUZHOU DIECASTING Co.,Ltd. |
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