CN104259423B - Injection device for die-casting machine - Google Patents

Injection device for die-casting machine Download PDF

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Publication number
CN104259423B
CN104259423B CN201410471399.1A CN201410471399A CN104259423B CN 104259423 B CN104259423 B CN 104259423B CN 201410471399 A CN201410471399 A CN 201410471399A CN 104259423 B CN104259423 B CN 104259423B
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China
Prior art keywords
barrel
injection device
casting machine
die casting
material injection
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CN201410471399.1A
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Chinese (zh)
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CN104259423A (en
Inventor
捷卡姆.查马特
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SDT-Smart Diecasting Technology (Suzhou) Co., Ltd.
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SUZHOU CHENGSHI CASTING Co Ltd
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Priority to CN201410471399.1A priority Critical patent/CN104259423B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves

Abstract

The invention discloses an injection device for a die-casting machine. The injection device comprises an injection component, a mold component and a driving mechanism, wherein the injection component is used for injecting molten metal, the mold component is used for forming a casting, and the driving mechanism is used for providing injection power. The injection component comprises a charging barrel and a plunger slidably arranged in the charging barrel, the tail end of the plunger is connected with the driving mechanism, the plunger comprises a plunger rod and a plunger head, the side wall of the plunger head is provided with a first sealing portion in sliding fit with the inner wall of the charging barrel, the plunger head is provided with a hollow cavity, the hollow cavity is provided with an opening communicated with a pressure chamber in the front of the plunger head, and the first sealing portion is positioned on a slice area with a certain deformation capacity formed between the hollow cavity and the outer wall of the plunger head. The die-casting machine has a fine sealing function in the injection process, the larger the injection pressure is, the closer the seal is, casting quality can be greatly improved, production efficiency is improved, and production cost is reduced.

Description

A kind of for the material injection device on die casting machine
Technical field
The present invention relates to a kind of for the material injection device on die casting machine, belong to die-casting technique field.
Background technology
Die-casting technique be by the molten metal of molten state under high-voltage high-speed Fast Filling mold cavity, and make foundry goods in high pressure Lower coagulation forming, is current production efficiency highest casting technique.Foundry goods is carried out shoot material during die cast, need head First alloy material is heated into motlten metal liquation, then again molten metal is directed in the barrel of material injection device, finally leads to Cross plunger molten metal is pushed to from barrel in mould carry out carrying molded.Due in barrel injection be molten state gold Belong to liquation, temperature is very high, and in material shooting process must with certain pressure that shoots material, this require plunger and material tube inner wall it Between there is good sealing effectiveness.
As Chinese patent document cn201618837u discloses a kind of non-crystaline amorphous metal vacuum material injection device and includes this vacuum The die casting machine of material injection device, its material injection device mainly includes barrel, and move reciprocatingly in described barrel penetrate splenium part (plunger), is additionally provided with seal shooting material between part and barrel, and this seal is fixed on to be penetrated on splenium part, this seal master To be cushion rubber hydrostatic seal or magnetic seal.Due to being face seal between the seal in this patent document and material tube inner wall, penetrate Splenium part weares and teares larger when moving reciprocatingly in barrel；In addition, and due to barrel and penetrating splenium part and be both needed to work at high temperature Make, and high temperature can further result in that its bulk material softens, this further exacerbates wear extent during relative motion, cause Make seal short life, sealing is unreliable；When particularly shooting material at elevated pressures, molten metal bath and easily from seal with Gap location between material tube inner wall spills, and this not only can make injection pressure not reach default injection pressure, or even can be because leakage Excessively, cause the feed liquid in mould not enough.
Content of the invention
For this reason, the technical problem to be solved is to overcome existing die casting machine sealing surface wear serious, penetrate It is unreliable to seal in material engineering, and particularly in die casting with pressure, motlten metal liquor is easily let out at plunger with the sealing of barrel Leakage, leads to the drawbacks of shoot material insufficient pressure or easily produce casting flaw, and then provides a kind of cold house with self-sealing function Die casting machine, this cold-chamber die casting machine ensure that tight seal between plunger and material tube inner wall in material shooting process, and with shooting material The increase of pressure, sealing intensity increases therewith, therefore has better seal effect.
For solving above-mentioned technical problem, the present invention employs the following technical solutions:
A kind of for the material injection device on die casting machine, it includes the assembly that shoots material for injection molten metal bath, for casting The die assembly of part molding and the drive mechanism for providing injection power, the described assembly that shoots material includes barrel and is slidably arranged in Plunger in the inner chamber of described barrel, the tail end of described plunger is connected with described drive mechanism, described plunger include plunger rod and Stopper head, the side wall of described stopper head is provided with the first sealing with described material tube inner wall slipper seal, and described stopper head has Middle cavity, described middle cavity has the opening connecting with the pressure chamber in front of stopper head, and described first sealing position is in described In the thin slice area with certain deformability being formed between cavity and described stopper head outside wall surface.
One end away from described stopper head of described plunger rod is provided with the second sealing, described second sealing and described material The inwall slipper seal of cylinder.
Described first sealing is at least annular together seal convexity being molded on described stopper head lateral wall.
The both sides of described seal convexity are respectively arranged with annular groove, and described annular groove is flat with described seal convexity circumference Row setting.
Described seal convexity is provided with twice, and passes through described annular groove interval together described in twice between seal convexity Open.
The outline of described seal convexity is arc-shaped structure；The longitudinal cross-section semicircular in shape of described annular groove.
Be provided with the described opening of described middle cavity for limit described middle cavity excessively expand or excess shrinkage spacing Device.
Described stopping means include the dividing plate being fixed on the end face of described stopper head, and are arranged at described hollow intracavity Push rod, one end of described push rod is fixed on the bottom of described middle cavity, and the other end of described push rod is conflicted on described dividing plate, Between described dividing plate and described end face, and have between described dividing plate and described push rod and the opening of described stopper head and connect institute State the gap of pressure chamber and described middle cavity.
The area of described dividing plate is of substantially equal with the area of the end face of described stopper head, and described dividing plate passes through some bolts It is fixed on the described end face of described stopper head.
Described push rod extends the end face of described stopper head at the opening of described middle cavity, described dividing plate with described top The side center setting of bar cooperation is fluted, and described push rod inserts in described groove.
Screw thread is offered, at the end axle center of described hollow bottom of chamber on the one end side coordinating with described middle cavity of described push rod Offer screw, described push rod passes through screw thread and screws in the bottom of described middle cavity with screw cooperation and fix.
The other end of described plunger rod is provided with the second stopper head, and described second sealing is arranged on described second stopper head On, the central point of described second stopper head and the length direction with respect to described plunger rod for the described stopper head.
Described barrel includes flat part, and is arranged on the gooseneck portion of described flat part discharging one end, described gooseneck portion Inner chamber is tilted obliquely and is connected with die cavity, and the inner chamber upper wall of described flat part passes through setting with the inner chamber upper wall in described gooseneck portion Rake transition in described flat part end connects, and the minimum point of described rake is less than the discharging opening in described gooseneck portion Low spot.
Die cavity between the discharging opening of described first sealing, the inwall of described barrel and described barrel is formed for storing The described pressure chamber of molten metal bath to be shot material, the inwall of described first sealing, described second sealing and described barrel it Between die cavity formed for the indoor pressure-less chamber supplementing molten metal bath of described pressure.
Arrange between described pressure chamber and described pressure-less chamber flow to from described pressure-less chamber for molten metal bath described The indoor one-way flow device of pressure, described one-way flow device is suitable to closing in described plunger material shooting process, and described Open during plunger return.
Described thin slice area forms described one-way flow device.
The side wall of described barrel is provided with the molten metal passage for injecting molten metal bath for described barrel, described metal It is indoor to Metal Melting that liquid passage passes through pipeline communication；Described molten metal passage is suitable to when described plunger is located at initial position even Lead to described pressure chamber, and be suitable to connect described pressure-less chamber when described plunger carries out shooting material action.
Described molten metal passage includes the vertical passageway being radially arranged along described barrel and the axial direction along described barrel sets The interconnection put, the basis that described interconnection is arranged on described barrel is internal, and one end of described interconnection is vertical with described Channel connection, the other end of described interconnection extends on the end face of close described drive mechanism side of described barrel, and It is connected with described seal for pipe joints.
Described interconnection extends to the outside of described barrel from the inner chamber of described barrel, and being located at of described interconnection Plunger seal is passed through in one end outside described barrel.
The outside of described barrel is provided with the heating system for the molten metal bath in described barrel is maintained at the temperature that shoots material System.
Described heating system includes the fluid passage being arranged on described barrel, and described fluid passage spiral surrounding is in described On the inner chamber of barrel；It is arranged at the pump between the inlet of described fluid passage and liquid outlet；And in described fluid passage Fluid heating heater；Described fluid after heating forms closed circuit by described pump in described fluid passage, Hot fluid radiating in described fluid passage is heated with the molten metal to described barrel inner chamber.
Described fluid passage is around the cavity arrangements of described flat part and gooseneck portion, and described fluid passage is straight with described Spacing between portion's inner chamber is roughly equal with the spacing of described gooseneck portion inner chamber with described fluid passage.
It is provided with the storage tank for storing fluid between the described liquid outlet of described fluid passage and described pump.
Described heater is cartridge heater, and described cartridge heater is set in the outside of described barrel.
Described fluid passage is molded over the body interior of described barrel.
Described inlet and described liquid outlet take shape on described barrel, and described inlet and described liquid outlet set respectively Put one end away from the described mouth that shoots material in described barrel, pass through the first guiding between described inlet and described fluid passage logical Road connects, described first guide channel by described barrel away from the described mouth that shoots material one end extend close to described in shoot material mouth one In the described fluid passage at end；Described discharging opening is connected with described fluid passage by the second guide channel.
Outside wall surface along described barrel offers spiral helicine groove, and spiral helicine described groove is along described barrel Axially extending, the outside of described barrel is arranged with sleeve, and described sleeve is coordinated with the outer wall face seal of described barrel, described groove The gap and inwall of described sleeve between forms described fluid passage.
Described sleeve is described cartridge heater.
Described inlet and described liquid outlet take shape on described cartridge heater, and described inlet and described liquid outlet It is arranged at the side away from the described mouth that shoots material, pass through the first guide channel between described inlet and described fluid passage even Logical, described first guide channel by described barrel away from the described mouth that shoots material one end extend close to described in shoot material mouthful one end In described fluid passage；Described discharging opening is connected with described fluid passage by the second guide channel.
The outside of institute's heater is arranged with heat insulating sleeve.
Described flat part, described gooseneck portion and described heater are integral type structure.
The outside of described heater is provided with the heat insulating sleeve for insulation.
The technique scheme of the present invention has the advantage that compared to existing technology
1. the present invention for the material injection device on die casting machine, plunger includes plunger rod and stopper head, the side wall of stopper head Be provided with the first sealing with material tube inner wall slipper seal, stopper head has middle cavity, and middle cavity have with stopper head in front of Pressure chamber connection opening, what the first sealing position was formed between middle cavity and stopper head outside wall surface has certain deformation energy In the thin slice area of power.When carrying out die casting, the hollow intracavity on stopper head can be full of high-pressure smelting molten metal, this high-pressure smelting gold Belong to liquid and one radial forces is applied to thin slice area so that thin slice area appropriateness expands, first can be strengthened after the expanded radially of thin slice area close Sealing intensity between envelope portion and material tube inner wall, and then prevent the molten metal bath to be shot material of high pressure from the first sealing and barrel The contact position of inwall leaks and reduces pressure or the amount reducing the molten metal that shoots material of shooting material, and then effectively reduces casting flaw.
2. the present invention for the material injection device on die casting machine, one end away from stopper head of plunger rod is provided with the second sealing Portion, and the inwall slipper seal of the second sealing and barrel.By arranging the second sealing, plunger not only can be further ensured that Sealing property, prevent the molten metal bath in charging basket from leaking from the tail end (away from one end of discharging opening) of charging basket；Simultaneously as The both ends of plunger are all contacted with the inner wall sealing of charging basket, and then ensure that plunger has more stable work in running Make state, effectively prevent plunger and cause the first sealing concentrated wear tight because of stress off-center axis in running The technological deficiency of weight.
3. the present invention for the material injection device on die casting machine, its first sealing is to be molded on stopper head lateral wall At least annular together seal convexity, this seal convexity can not only reduce friction in reciprocatory movement in barrel for the plunger Power, reduces abrasion, can also improve sealing property simultaneously.
4. the present invention for the material injection device on die casting machine, its seal convexity both sides is provided with annular groove, and institute State annular groove to be arranged in parallel with seal convexity circumference, this sealed groove improve thin slice area deformability while additionally it is possible to Guarantee the sealing property between seal convexity and material tube inner wall.
5. the present invention for the material injection device on die casting machine, be wherein provided with the opening of cavity for limit in cavity Excessive expansion or the stopping means of excess shrinkage, by arranging this stopping means, can not only ensure that stopper head has good Working condition, can also prevent because the pressure that shoots material is excessive makes plunger stuck simultaneously.
6. the present invention for the material injection device on die casting machine, its plunger rod be respectively arranged at two ends with stopper head and the second post Chock plug, and make the central point that the second stopper head and stopper head are with respect to the length direction of plunger rod, namely described stopper head Consistent with the structure of described second stopper head, this setup is easy to assembling, is safeguarded.
7. the present invention is used for the material injection device on die casting machine, and the flat part inner chamber upper wall of charging basket is led to gooseneck portion inner chamber upper wall Cross the rake transition connection being arranged on flat part end, and make the minimum point of rake less than the discharging opening in described gooseneck portion Minimum point, has suitable difference in height, Jin Erbian between the minimum point of rake and the minimum point of gooseneck portion discharging opening by making In controlling molten metal bath to be full of whole pressure chamber, the liquid level of molten metal bath is only needed to be not less than the minimum point of rake Highly, whole pressure interior is just full of molten metal bath, and by the liquid surface height controlling of molten metal bath less than gooseneck portion The height of the minimum point of discharging opening, molten metal bath would not be from pressure interior spilling；Because pressure interior is filled with melting gold Belong to liquid, only the top in gooseneck portion is detained a small amount of air, and during injection, these a small amount of air are easy to be discharged, and then avoid Entrained air bubbles impact casting quality in foundry goods.
8. the material feeding mode for the material injection device on die casting machine of the present invention be arrange in the flat part of barrel unidirectional (this pressure chamber is mainly used in depositing molten metal to be injected the pressure chamber of circulation, in material shooting process, when plunger promotes forward, presses The indoor volume of power diminishes, and the pressure of molten metal will raise) (this pressure chamber is connected with working chamber, at molten metal with pressure-less chamber In atmospheric pressure state), the pressure-less chamber of barrel is connected, pressure with Metal Melting room (for melting the crucible of metal or other device) Arrange between room and pressure-less chamber and flow to the indoor one-way flow device of pressure for molten metal bath from pressure-less chamber；Due to pressure Power interior is filled with molten metal bath, can shorten the movement travel of plunger, and then save power and energy, shortens injection week Phase；And pass through to connect pressure-less chamber with Metal Melting room, the indoor molten metal bath of pressure enters in pressure-less chamber, permissible Greatly reduce injection time, improve casting efficiency；And it is molten due to being full of always in casting process in pressure chamber and pressure-less chamber Melt molten metal, barrel is consistent all the time with the temperature of molten metal bath with plunger, thus need not melting indoor by molten metal plus Heat enters temperature reduction after feeding cylinder to a higher temperature to make up this molten metal bath, only need to be heated to molten metal slightly higher Temperature when shooting material, the molten metal liquid temperature entering than tradition in feeding cylinder reduces by 50 degree about, and molten in barrel Melt the easy control of temperature of molten metal, so effectively prevent barrel material and plunger material to be in high-temperature phase-change interval and reduce Service life, can also save the substantial amounts of energy cost for melting metal material simultaneously.It can be seen that the material injection device of the present invention Although structure is simple, but solves many technical barriers of present cold chamber die-casting machine, there is revolutionary technological break-through.
9. the present invention for the material injection device on die casting machine, by arranging molten metal passage on barrel body, and make Molten metal passage is passed through pipeline and is connected with Metal Melting room (for melting the crucible of metal or other device), by controlling metal The liquid level of the indoor molten metal bath of melting, you can the amount of the indoor molten metal bath of effective control feed pressure, realizes Inject appropriate molten metal bath from trend pressure chamber after each plunger return, and then be easy to control injection rate, shorten note The material time, improve die casting efficiency.
10. the vertical passageway for the material injection device on die casting machine of the present invention extends to barrel from the inner chamber of barrel Side, one end outside barrel of interconnection is sealed by sealing-plug, and this setup is easy to after die casting finishes will In barrel inner chamber and molten metal passage, the molten metal bath of residual is discharged in time, it is to avoid molten metal bath leads in inner chamber and molten metal Condense in road and result in blockage or affect plunger action.
The outside in the flat part for the material injection device on die casting machine of 11. present invention and gooseneck portion is provided with heating dress Put, this heater to the suitably heating of the molten metal bath in barrel so as to be always held at the temperature that shoots material, and then can improve casting Part quality, improve production efficiency.
12. present invention pass through to arrange spiral fluid passage on barrel for the material injection device on die casting machine, and Fluid in fluid passage is circulated by formation loop using pump, this fluid is heated to barrel after heating devices heat, And then enable the molten metal solution in injection barrel to be maintained at more suitable injection temperature, good to guarantee that foundry goods has Good casting effect；In addition, the heater of the present invention is not directly barrel to be heated, but by heating between fluid Connect and barrel heated, this setup it can be avoided that the harmful effect to heater performance for the metallic solution of high temperature, And then the service life of prolongation heater, regulating system temperature that simultaneously can also be more precise and tiny is it is ensured that metallic solution has Good injection temperature.
The fluid passage that 13. present invention are used for the material injection device on die casting machine is helical form, from barrel away from the mouth that shoots material One end extend near shooting material at mouth, fluid passage apart from the inwall in gooseneck portion and between the inwall of barrel away from From basically identical, this setup can make the molten metal solution in barrel have more injection temperature in a balanced way, with When additionally it is possible to molten metal be effectively ensured when through gooseneck portion, its temperature that shoots material still is able to maintain that in optimum.
The heater of 14. present invention is cartridge heater, and this cartridge heater is set in the outside of barrel, this Design can make that whole material injection device is compacter, and integration degree is higher, and heats are preferably, can make the dress that shoots material The volume put is less.
When the fluid passage for the material injection device on die casting machine of 15. present invention is molded over the body interior of barrel, no Only can ensure that barrel has enough intensity, fluid passage can also be made close proximity to the inwall of described barrel, Jin Erti simultaneously The high efficiency of heating surface, energy saving；And described fluid passage is arranged on the outside of barrel, namely first on the outer surface of barrel Open up spiral helicine groove, then again in the sheathed sleeve sealing engagement therewith in the outside of barrel, this groove and sleeve lining it Between gap formation fluid passage, the fluid passage of this planform had both been easy to processing and manufacturing, and can also have been reduced simultaneously and be manufactured into This.
16. present invention be used for die casting machine on the heater of material injection device outside be provided with for insulation heat insulating sleeve, This heat insulating sleeve one side can prevent the material tube inner wall of high temperature and heater from occurring heat exchange to reduce temperature with outside air Degree, can also effectively prevent operator from because of the outer wall of unexpected touching heater, scald accident occurring simultaneously, and then improve equipment Security performance.
Brief description
In order that present disclosure is more likely to be clearly understood, specific embodiment below according to the present invention simultaneously combines Accompanying drawing, the present invention is further detailed explanation, wherein:
Fig. 1 is that the plunger for the material injection device on die casting machine of the present invention is located at structural representation during initial position；
Fig. 2 be the present invention the plunger for the material injection device on die casting machine be located at maximum shoot material position when structure show It is intended to；
Fig. 3 is the sectional view of the stopper head for the material injection device on die casting machine of the present invention；
Fig. 4 is the stopper head overall structure diagram for the material injection device on die casting machine of the present invention；
Fig. 5 is that the plunger for the material injection device on die casting machine of the present invention is provided with the sectional view of two stopper heads；
Fig. 6 is that the plunger for the material injection device on die casting machine of the present invention is provided with the overall structure of two stopper heads and shows It is intended to；
Fig. 7 is the structural representation with plunger cooperation for the charging basket for the material injection device on die casting machine of the present invention；
Fig. 8 is that the plunger for the material injection device on die casting machine of the present invention is located at structural representation when shooting material initial position Figure；
Fig. 9 be the present invention the plunger for the material injection device on die casting machine be located at maximum shoot material position when structural representation Figure；
Figure 10 is the schematic diagram of the heating system of the present invention；
Figure 11 is the structural representation of the barrel, fluid passage and heater cooperation of one embodiment of the present invention；
Figure 12 is the structural representation of the barrel, fluid passage and heater cooperation of another embodiment of the invention Figure；
The structural representation of the spiral helicine fluid passage of Figure 13 present invention
In figure reference is expressed as:
10- barrel；100- pressure chamber；101- pressure-less chamber；102- heater；103- pump；104- fluid passage； 1041- inlet；1042- liquid outlet；105- discharging opening；The minimum point of 1051- discharging opening；106- first guide channel；116- Second guide channel；107 grooves；108- flat part；1080- rake；The minimum point of 1081- rake；109- gooseneck portion； 110- heat insulating sleeve；111- storage tank；2- plunger；20- plunger rod；21- stopper head；21 '-the second stopper heads；22,22 '-hollow Chamber；23,23 '-thin slice area；24- seal convexity；24 '-the second sealings；240,240 '-annular groove；25,25 '-push rod；26, 26 '-end face；27,27 '-dividing plate；28,28 '-gap；3- molten metal passage；31- vertical passageway；32- interconnection；4- manages Road；5- Metal Melting room；6- mold cavity.
Specific embodiment
Embodiment one
Referring to Fig. 1-4, a kind of for the material injection device on die casting machine, it includes the group that shoots material for injection molten metal bath Part, the die assembly for foundry goods molding and the drive mechanism for providing injection power, the described assembly that shoots material includes barrel 10 With the plunger 2 in the inner chamber being slidably arranged in described barrel 10, the tail end of described plunger 2 is connected with described drive mechanism, described Plunger 2 includes plunger rod 20 and stopper head 21, and the side wall of described stopper head 21 is provided with and the inwall slipper seal of described barrel 10 First sealing, described stopper head 21 has middle cavity 22, and described middle cavity 22 has the pressure chamber 100 with stopper head 21 front The opening of connection, what described first sealing position was formed between described middle cavity 22 and described stopper head 21 outside wall surface has one Determine in the thin slice area 23 of deformability.
Opening due to middle cavity 22 is connected with pressure chamber 100, and when piston carries out shooting material action, squeeze pressure is indoor 100 molten metal bath, and make the molten metal bath pressure rise in described pressure chamber 100, the melting in middle cavity 22 simultaneously The pressure of molten metal also synchronously raises, and now described middle cavity 22 can expand a certain amount of, and injection pressure is higher, middle cavity 22 Swell increment is bigger, and because stopper head 21 is provided with thin slice area 23, the expansion of described middle cavity 22 is the brightest in the outside in thin slice area 23 Aobvious, and the outside in thin slice area 23 is provided with the seal convexity 24 of annular, therefore, can be with institute in the seal convexity 24 of described annular State the expansion of cavity 22 and tightly conflict on the inwall of barrel 10, to strengthen between seal convexity 24 and material tube inner wall 10 Sealing property.And because the contact area between seal convexity 24 and barrel 10 inwall is less, friction is less, therefore with injection pressure The increase of power, can't affect motion in barrel 10 for the plunger.
When carrying out die casting, the hollow intracavity on stopper head can be full of high-pressure smelting molten metal, this high-pressure smelting molten metal One radial forces is applied to thin slice area so that thin slice area appropriateness expands, the first sealing after the expanded radially of thin slice area, can be strengthened Sealing intensity and material tube inner wall between, and then prevent the molten metal bath to be shot material of high pressure from the first sealing and material tube inner wall Contact position leakage and reduce and shoot material pressure or reduce the amount of molten metal of shooting material, and then effectively reduce casting flaw, improve Casting qualified rate, and then improve production efficiency, reduce production cost.
Referring to Fig. 5, Fig. 6, one end away from described stopper head 21 of the described plunger rod 20 in the present embodiment is provided with second Sealing 24 ', the inwall slipper seal of described second sealing 24 ' and described barrel 10, by arranging described second sealing 24 ', sealing effectiveness not only can be further enhanced, the stability of plunger operation can also be improved simultaneously.
In addition, being respectively provided with the first sealing and the second sealing 24 ' by the two ends in described plunger, when described plunger After being assembled to the inner chamber of described barrel 10, described first sealing, described second sealing 24 ', described plunger rod 20 and institute Form the pressure-less chamber 101 for depositing molten metal bath, meanwhile, in barrel 10 and described nothing between the inwall stating barrel 10 The corresponding position of pressure chamber 101 opens up a running channel for injecting molten metal bath into described pressure-less chamber, described running channel It is communicated to Metal Melting room, or using scoop filling, to ensure to be full of the molten metal of melting in described pressure-less chamber all the time；First The secondary molten metal that first will be each filled with described pressure chamber 100 and described pressure-less chamber 101 when using melting, then promotes described post Plug is pushed into the maximum position that shoots material and completes to shoot material for the first time, now due to the molten metal cooling shaping in mould and mould pouring basin, The described mouth 105 that shoots material is closed, and during described plunger rearward movement, the space of described pressure chamber 100 is gradually increased, and is formed relatively Vacuum, now middle cavity 22 in described stopper head 21 can shrink at axle center, and then make described first sealing 24 with described A gap is produced, in the presence of pressure reduction, the molten metal bath in pressure-less chamber 101 can be between described between material tube inner wall Clearance flow enters in described pressure chamber 100, meanwhile, the institute that the indoor molten metal bath of described Metal Melting then can endlessly supplement State in pressure-less chamber 101, when described plunger rearward movement is to initial position, described pressure chamber 100 and described pressure-less chamber 101 Inside it is each filled with molten metal bath, hereafter can carry out continuous casting operation.
In the present embodiment, described first sealing is the sealing of the twice annular being molded on described stopper head 21 lateral wall Raised 24.Because between described seal convexity 24 and the inwall of described barrel 10, contact area is less, therefore plunger is transported reciprocal Frictional force when dynamic is less, and abrasion is relatively light, and good sealing effect, and arranges seal convexity 24 described in twice and then can further enhance Sealing property.
In the present embodiment, the both sides of described seal convexity 24 are respectively arranged with annular groove 240, and seal convex described in twice Rise and be spaced apart by described annular groove 240 together between 24, described annular groove 240 is parallel with described seal convexity 24 circumference Setting.Described annular groove 240 forms continuous wavelike structure with described seal convexity 24 on the surface of described stopper head 21 (axial direction along described plunger is partly cutd open, you can be clearly visible wavy structure, referring to Fig. 3), and described annular groove 240 and institute State the thinnest part that thickness between the inwall of cavity 22 is described thin slice area 23, by arranging described annular groove 240, Ke Yijin One step strengthen thin slice area 23 deformability, and then make described first sealing elastic packing effect more preferable.
In the present embodiment, the outline of described seal convexity 24 is arc-shaped structure, and this structure is interior with described barrel 10 It is essentially linear contact lay during wall contact, the force of sliding friction between described plunger and the inwall of described barrel 10 can be substantially reduced, fall Low abrasion；And the longitudinal cross-section semicircular in shape of described annular groove 240, then be conducive to described thin slice area 23 to deform.
In the present embodiment, be provided with the described opening of described middle cavity 22 for limit described middle cavity 22 excessively expand or The stopping means of excess shrinkage.Described stopping means include the dividing plate 27 being fixed on the end face 26 of described stopper head 21, and It is arranged at the push rod 25 in described middle cavity 22, one end of described push rod 25 is fixed on the bottom of described middle cavity 22, described top The other end of bar 25 is conflicted on described dividing plate 27, has and connect described pressure chamber between described dividing plate 27 and described end face 26 100 with the gap 28 of described middle cavity 22.By arranging described stopping means, injection pressure described stopper head when excessive can be prevented 23 excessively expand, or even will be stuck for described plunger, or described stopper head 23 when preventing the vacuum in described pressure chamber 100 excessive Excess shrinkage, exceedes the normal elastic returning scope in described thin slice area 23, and therefore, described stopping means effective protection can have shape The stopper head 21 of change ability damages, and then increases the service life.
In the present embodiment, the area of described dividing plate 27 is of substantially equal with the area of the end face 26 of described stopper head 21, described Dividing plate 27 is bolted on the described end face 26 of described stopper head 21 by some, in order to assembling, keeping in repair.
In the present embodiment, described push rod 25 extends the end face of described stopper head 21 at the opening of described middle cavity 22 26, the side center setting with the cooperation of described push rod 25 of described dividing plate 27 is fluted, and described push rod 25 inserts described groove Interior, described groove is easy to described push rod 25 and described dividing plate 27 relative localization.
In the present embodiment, the one end side coordinating with described middle cavity 22 of described push rod 25 offers screw thread, described Screw is offered, described push rod 25 passes through screw thread and screw cooperation screws in the bottom of described middle cavity 22 at middle cavity 22 bottom axle center Portion is simultaneously fixing, is easy to the assembling of described push rod 25 using threaded screw bore cooperation.
Between dividing plate 27 described in the present embodiment and described end face 26, the opening of described push rod 25 and described stopper head 21 it Between leave certain gap 28, described gap 28 connects described pressure chamber 100 and described middle cavity 22, and described molten metal is in institute State and can flow between pressure chamber 100 and described middle cavity 22；It is, of course, also possible to by the size adjusting described gap 28, make Molten metal has certain damping action when flowing through described gap 28, and then also can prevent described middle cavity 22 from excessively expanding Or shrink.
Embodiment two
The present embodiment offer is a kind of, and for the material injection device on die casting machine, it is the deformation on embodiment one basis, Described second sealing 24 ' in above-described embodiment one be used for the purpose of preventing molten metal bath in pressure-less chamber 101 from The afterbody of described plunger flows out outside described barrel 10, and the plunger seal mode that therefore described second sealing 24 ' is common is Can.Double containment plunger for the ease of the present invention is installed in described barrel 10, and guarantees that described plunger has in barrel 10 Have relatively stable operation to transport state, on the basis of above-described embodiment one, referring to Fig. 5, Fig. 6, described plunger rod 20 another End is provided with the second stopper head 21 ', and described second sealing 24 ' is arranged in the peripheral side of described second stopper head 21 ', described Second stopper head 21 ' and the central point symmetrical configuration of the length direction with respect to described plunger rod 20 for the described stopper head 21, namely Described second stopper head 21 ' is consistent with the structure of described stopper head 21, and this setup advantageously ensures that described plunger in institute The sealing stating its two ends when running in barrel 10 is of substantially equal with material tube inner wall frictional force, can more steadily fixed along axle Line direction moves back and forth, and then guarantees accurate die casting, and when necessary moreover it is possible to by described stopper head 21 and described second stopper head 21 ' exchange installation sites.
The concrete structure of described second stopper head 21 ' is: it includes middle cavity 22 ', described middle cavity 22 ' and described plunger Form thin slice area 23 ' between the lateral wall of head, it is raised that described thin slice area 23 ' is provided with two seals, seal convexity described in two it Between separated by one annular groove 240 ', described two seals are raised to be described second sealing 24 ', described middle cavity It is additionally provided with threaded push rod 25 ', described push rod 25 ' is against in the central slot of dividing plate 27 ', described dividing plate 27 ' in 22 ' Form gap 28 ' and the end face 26 ' of the second stopper head 21 ' between.
Embodiment three
The present embodiment provide a kind of for the material injection device on die casting machine, referring to Fig. 1, Fig. 7, in above-described embodiment one or real On the basis of applying example two, described barrel 10 includes flat part 108, and the gooseneck being arranged on described flat part 108 discharging one end Portion 109, the inner chamber in described gooseneck portion 109 is tilted obliquely and is connected with mold cavity 6, the inner chamber upper wall of described flat part 108 It is connected by being arranged on rake 1080 transition of described flat part 108 end with the inner chamber upper wall in described gooseneck portion 109, described The minimum point 1081 of rake 1080 is less than the minimum point 1051 of the discharging opening 105 in described gooseneck portion 109, by making rake There is suitable difference in height, from Fig. 1 between the minimum point 1051 of 1080 minimum point 1081 and the discharging opening 105 in gooseneck portion 109 In as can be seen that the liquid level that represents for dotted line b of minimum altitude of molten metal bath in barrel 10, its maximum temperature is empty The liquid level that line a represents, only need to by the liquid surface height controlling of the molten metal bath in pressure chamber 100 dotted line a and dotted line b it Between, then just it is full of molten metal bath in whole pressure chamber 100.In addition, when the indoor liquid of pressure chamber, pressure-less chamber and Metal Melting No molten metal flowing when face etc. is high, therefore can come control pressure room by controlling the liquid level c of melting interior molten metal bath The amount of interior injection molten metal, and then improve the control ability to injection molten metal；Certainly can also be using other control modes.By It is full of molten metal bath in pressure chamber 100 always, and then the air capacity in pressure chamber 100 can be greatly reduced, so effectively anti- Only cause there is air blister defect in foundry goods body because air capacity can not be discharged in time greatly very much in injection process；And due to pressure chamber It is full of molten metal bath always in 100, is substantially shorter the injection stroke of plunger, and then save power and energy.
In the present embodiment, between the discharging opening 105 of described first sealing, the inwall of described barrel 10 and described barrel 10 Die cavity form pressure chamber 100 for depositing molten metal bath to be injected, described first sealing, described second sealing 24 ' and described barrel 10 inwall between die cavity formed for into described pressure chamber 100 supplement molten metal bath no pressure Power room 101.Between described pressure chamber 100 and described pressure-less chamber 101, setting is flowed from described pressure-less chamber 101 for molten metal bath Move the one-way flow device in described pressure chamber 100, described one-way flow device is suitable to envelope in described plunger 2 material shooting process Close, and open in described plunger 2 reseting procedure, namely the pressure chamber of barrel can be automatically injected appropriate melting in material shooting process Melt molten metal, greatly save traditional scoop material feeding injection rate and be not easily controlled, and expend the more operating time, and then have a strong impact on The drawbacks of casting efficiency.Described thin slice area 23 forms described one-way flow device.
The two ends of described plunger are respectively provided with the first sealing and the second sealing, and make described first sealing setting In the thin slice area 23 of described stopper head 21, on the one hand can greatly shorten casting cycle, because finishing when described plunger shoots material When returning to initial position, all have been filled with the molten metal melting in described pressure chamber 100 and described pressure-less chamber 101, it returns to It has been shooting material and get ready next time while initial position, therefore shortened die casting time, its production efficiency Greatly improve；On the other hand, define pressure-less chamber 101 due between the inwall of plunger and barrel 10, and pressure-less chamber 101 exists It is each filled with the molten metal melting, the therefore inwall of barrel 10 and the molten metal of plunger body and melting has in whole material shooting process Identical temperature, does not have obvious temperature from the molten metal bath of described Metal Melting interior inflow and reduces, therefore in casting During aluminum product, it is easy to the temperature control of molten metal solutions (aluminum) in barrel 10 at 600 degree about, namely in injection die cavity Essentially 600 degree of molten metal bath (aluminum) temperature, this temperature will not make the mould made using h13 steel because of annealing deliquescing, Cracking, and then substantially prolongs die life.The present invention is equally applicable to cast for the material injection device on die casting machine Zinc products.
The material injection device of the present embodiment is full of molten metal bath due to pressure chamber and pressure-less chamber in casting process always, Barrel is consistent all the time with the temperature of molten metal bath with plunger, thus in melting interior, molten metal need not be heated to one relatively High temperature enters the reduction of the temperature after feeding cylinder to make up this molten metal bath, when only molten metal need to be heated to a little higher than shooting material Temperature, therefore enter molten metal liquid temperature in feeding cylinder than tradition and reduce by 50 degree about, and in barrel, melting is golden Belong to the easy control of temperature of liquid, so effectively prevent barrel material and plunger material to be in high-temperature phase-change interval and reduce and make With the defect in life-span, the substantial amounts of energy cost for melting metal material can also be saved simultaneously.
Example IV
The present embodiment provide a kind of for the material injection device on die casting machine, in order to improve the die casting efficiency of die casting machine, upper On the basis of stating embodiment two or embodiment three, the side wall of described barrel 10 is provided with for golden for the injection melting of described barrel 10 Belong to the molten metal passage 3 of liquid, described molten metal passage 3 is communicated in Metal Melting room 5 by pipeline 4；Described molten metal passage 3 It is suitable to connect described pressure chamber 100 when described plunger 2 is located at initial position, and be suitable to be shot material in described plunger 2 or answered Described pressure-less chamber 101 is connected during the action of position.When shooting material, plunger 2 promotes to the left, and by the motlten metal hydraulic pressure in pressure chamber 100 Inject in mold cavity 6, sealing between the inwall of the first sealing and barrel 10 is slidably matched, to prevent in pressure chamber 100 Molten metal bath is leaked in pressure-less chamber 101 from sealing station, and the second sealing 24 ' is also close with the inwall of barrel 10 simultaneously Envelope is slidably matched, to prevent the molten metal bath in pressure chamber 100 from the right side of the second sealing 24 ', namely the rear of barrel Reveal.Molten metal passage 3 needs setting in place, and referring to Fig. 1, now plunger 2 is located at initial position, and molten metal leads to The opening in road 3 is now located exactly at the left side of the seal convexity 24 of stopper head 21, now the molten metal bath in Metal Melting room 5 Connect with pressure chamber 100；Referring to Fig. 2, now plunger shoots material position positioned at maximum, and the opening of molten metal passage 3 is located exactly at The left side of the second seal convexity 24 ' on two stopper heads 21 ', now Metal Melting room 5 connect with pressure-less chamber 101.And plunger 2 Shoot material and reseting procedure in, the opening of molten metal passage 3 is connected with described pressure-less chamber 100 all the time, only plunger run To initial position, namely during position shown in Fig. 1, the opening of molten metal passage 3 is just located exactly at the left side of seal convexity 24, gold Belong to liquid passage 3 ability to connect with pressure chamber 100.
The horizontal type cold-chamber die casting feeding system of the present embodiment passes through to arrange molten metal passage on barrel body, and makes gold Belong to liquid passage to connect with Metal Melting room by pipeline, by controlling the liquid level of the indoor molten metal bath of Metal Melting, Get final product the amount of the indoor molten metal bath of effective control feed pressure it is achieved that noting from trend pressure chamber after each plunger return Enter appropriate molten metal bath, and then be easy to control injection rate, shorten injection time, improve die casting efficiency.
In the present embodiment, described molten metal passage 3 includes the vertical passageway 31 being radially arranged and edge along described barrel 10 The axially arranged interconnection 32 of described barrel 10, the basis that described interconnection 32 is arranged on described barrel 10 is internal, described One end of interconnection 32 is connected with described vertical passageway 31, and the other end of described interconnection 32 extends to described barrel 10 On the end face of described drive mechanism side, and it is tightly connected with described pipeline 4.Described interconnection 31 is from described barrel 10 Inner chamber extend to the outside of described barrel 10, sealing is passed through in one end positioned at described barrel 10 outside of described interconnection 31 Plug sealing.
The vertical passageway of the horizontal type cold-chamber die casting feeding system of the present embodiment extends to barrel from the inner chamber of barrel Side, one end outside barrel of interconnection is sealed by sealing-plug, and this setup is easy to after die casting finishes will In barrel inner chamber and molten metal passage, the molten metal bath of residual is discharged in time, it is to avoid molten metal bath leads in inner chamber and molten metal Condense in road and result in blockage or affect plunger action.
Embodiment five
The present embodiment provide a kind of for the material injection device on die casting machine, in above-described embodiment one to four any embodiment Charging basket on be provided with heating system for heating for charging basket, to ensure that the molten metal bath in charging basket is in the temperature that shoots material all the time Degree, and then improve the heating system of casting quality.Referring to Figure 10, Figure 11, Figure 13, described heating system includes being arranged at the dress that shoots material The fluid passage 104 on barrel 10 put, described fluid passage 104 spiral surrounding is on the inner chamber of described barrel 10；It is arranged at Pump 103 between the inlet 1041 of described fluid passage 104 and liquid outlet 1042, in present embodiment, described pump 103 is selected Electromagnetic pump；And the heater 102 to the fluid heating in described fluid passage 104；Described fluid after heating passes through institute State pump 103 and form closed circuit in described fluid passage 104, the hot fluid in described fluid passage 104 radiates with to described The molten metal of barrel 10 inner chamber is heated.
The present invention leads to spiral fluid passage 104, and the molten metal solution in feeding cylinder 10 can be made to be maintained at relatively For suitable injection temperature, to guarantee that foundry goods has good casting effect；In addition, the heater 102 of the present invention is not Directly barrel 10 is heated, but indirectly barrel 10 is heated by heating fluid, this setup can be kept away Exempt from the harmful effect to heater 102 performance of the metallic solution of high temperature, and then extend the service life of heater 102, with When can also be more precise and tiny regulating system temperature it is ensured that metallic solution has optimal injection temperature.
In the present embodiment, described fluid passage is around the cavity arrangements of described flat part 108 and gooseneck portion 109 and described Spacing between fluid passage 104 and described flat part 108 inner chamber and described fluid passage 104 and described gooseneck portion 109 inner chamber Spacing roughly equal, this setup may insure that the molten metal in barrel 10 has more temperature in a balanced way, and described Metallic solution when described gooseneck portion 108, still can ensure that in suitable temperature range in material shooting process, and then improves Casting quality.
In the present embodiment, it is provided with for depositing between the described liquid outlet 1042 of described fluid passage 104 and described pump 103 The storage tank 111 of storage fluid, described fluid is pumped in described fluid passage 104 from described storage tank 111 described pump 103, It is back to storage tank 111 from described liquid outlet 1041 after circulation, the described storage tank 111 of described setting is easy to control piper again Middle fluid flow.
The set location of the heater 102 of the present invention is not unique, as can by implement in the way of, described heater 102 can directly directly heat to the liquid in above-mentioned storage tank 111.And preferably, in the present embodiment, described heater 102 is cartridge heater, and described cartridge heater is set in the outside of described barrel 10, and this design can be by described heating Device 102 is integrated with described barrel, reduces equipment volume.
The mode of described fluid passage 104 molding of the present invention is not unique, referring to Figure 11, the described fluid in the present embodiment Passage 104 is molded over the body interior of described barrel 10, and this setup not only can ensure that described barrel 10 has enough Intensity, described fluid passage 104 can also be made close proximity to the inwall of described barrel 10 simultaneously, so improve the efficiency of heating surface, section The about energy.
In the present embodiment, described inlet 1041 and described liquid outlet 1042 take shape on described barrel 10, and described enter Liquid mouth 1041 and described liquid outlet 1042 are separately positioned on one end away from the described mouth 105 that shoots material of described barrel 10, this set The mode of putting is easy to described inlet 1041 and is connected with described pump 103 or described storage tank 111 with described liquid outlet 1042.Described enter Connected by the first guide channel 106 between liquid mouth 1041 and described fluid passage 104, described first guide channel 106 is by institute State barrel away from described one end shooting material mouth 105 extend close to described in shoot material the described fluid passage 104 of mouth 105 one end Interior；Described discharging opening 1042 is connected with described fluid passage 104 by the second guide channel 116.
In order to strengthen heating, heat insulation effect further, the outer wall simultaneously avoiding material injection device is overheated and cause scald accident, The outside of described heater 102 is arranged with heat insulating sleeve 110.
Embodiment six
The present embodiment provide a kind of for the material injection device on die casting machine, be the change on the basis of above-described embodiment five Shape, described fluid passage 104 can also be another kind of design, referring to Figure 12, opens along the outside wall surface of described barrel 10 It is provided with spiral helicine groove 107, spiral helicine described groove 107 is axially extending along described barrel 10, described barrel 10 Outside is arranged with sleeve, and described sleeve is coordinated with the outer wall face seal of described barrel 10, and described groove 107 is interior with described sleeve Gap between wall forms described fluid passage 104.Using this design can be convenient process described fluid Passage 104, and then reduce manufacturing cost.
In the present embodiment, the gooseneck portion 109 of described barrel 10 and flat part 108 are Demountable, described barrel 10 Flat part 108 on groove 107 be arranged on the lateral surface of described barrel 10, and the groove 107 being located at gooseneck portion 109 is then opened It is located on the side of sloping portion cooperation with described gooseneck portion 109 of described sleeve, then by described gooseneck portion 109 and described Groove 107 at flat part 108 connects, and ultimately forms described fluid passage 104.Certainly, the groove at described gooseneck portion 109 On 107 outer walls that can also be molded directly within described gooseneck portion 109, then it is that described sleeve carries out sealing cooperation.
Further, described sleeve is described cartridge heater, also will cartridge heater inwall and described barrel 10 Outer wall between sealing cooperation, make described groove 107 form described fluid passage 104.
In the present embodiment, described inlet 1041 and described liquid outlet 1042 take shape on described cartridge heater, and institute State inlet 1041 and side that described liquid outlet 1042 is arranged at away from the described mouth 105 that shoots material, described inlet 1041 with Connected by the first guide channel 106 between described fluid passage 104, described first guide channel 106 is by described barrel 10 Away from one end of the described mouth 105 that shoots material, extend close to described in shoot material mouth 105 one end described fluid passage 104 in；Described go out Material mouth 1042 is connected with described fluid passage 104 by the second guide channel 116.
Above-mentioned specific embodiment is simply explained in detail to technical scheme, the present invention not only only office Be limited to above-described embodiment, it will be understood by those skilled in the art that every according to above-mentioned principle and spirit on the basis of the present invention Improve, substitute, all should be within protection scope of the present invention.
The operation principle for the material injection device on die casting machine of the present invention is:
Referring to Fig. 1, Fig. 5, Fig. 8 (eliminating the concrete structure of molten metal passage 3 in Fig. 8), now described plunger 2 is positioned at just Beginning position, described molten metal passage 3 is connected with pressure chamber 100, and the opening of described molten metal passage 3 is located exactly at seal convexity 24 Left side, and abut against seal convexity 24, in described pressure chamber 100 and described pressure-less chamber 101, be each filled with the molten metal melting, Described and the now molten metal bath in described pressure chamber 100 and described pressure-less chamber 101 pressure is of substantially equal, during die casting, Drive mechanism drives described plunger to left movement, the pressure of the metallic solution in described stopper head 21 left pressure chamber 100 simultaneously Raise, and the molten metal bath in described pressure chamber 100 is from the entrance of gap 28 in cavity 22, described middle cavity 22 is in high pressure In the presence of molten metal bath, radially outward expansion (direction of arrow referring in cavity in Fig. 9 22), makes on stopper head First sealing is in close contact with the inwall of barrel 10, and the pressure that shoots material is bigger, between the inwall of the first sealing and barrel 10 Sealing effectiveness better, and then achieve self-packing function.
Referring to Fig. 2, Fig. 5, Fig. 9, now described plunger motion to maximum shoots material position, and shoot material release, and molten metal leads to Road 3 is connected with pressure-less chamber 101, and the opening of described molten metal passage 3 is located exactly at the left side of described second sealing 24 ', And against the second sealing 24 ', now in mould, filled the molten metal of melting, when described plunger moves right, due to shooting material Cooled metal blocking at mouth 105, the space of pressure chamber 100 becomes big, formation relative vacuum, and now middle cavity 22 can radially Shrink at axle center, and then make to have a gap, the melting in pressure-less chamber 101 between the first sealing 24 and material tube inner wall 10 Molten metal adds in described pressure chamber 100 along described gap under the effect of the pressure, when described plunger motion is to initial bit Put that (position shown in Fig. 8, now because the elastic force in thin slice area 23 acts on, described seal convexity 24 outwards only leans on described barrel 10 Wall, simultaneously the inwall of described barrel 10 to described seal convexity 24 apply one sensing axle center counteracting force, referring to figure The direction of arrow in cavity 22 in 8) when, it is each filled with the molten metal melting in described pressure chamber 100 and described pressure-less chamber 101, Plunger motion to be waited need not add molten metal bath as traditional material injection device into barrel again to initial position, therefore may be used Save the fluid injection time, greatly shorten die casting cycle, improve production efficiency.
The present invention's, die casting cycle is short simple for the material injection device structure on die casting machine, production efficiency is high, and traditional is cold Chamber pressure casting machine need not spend more cost or make the system that shoots material that larger structure change can apply the present invention, and the present invention The system of shooting material can reduce the temperature of the molten metal that shoots material, and for the molten metal bath of metallic aluminium or zinc, sets than tradition die casting Standby molten metal bath reduces by 50 degree about, therefore can effectively prevent mould deliquescing, cracking, greatly prolong the mold use longevity Life.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or Change among still in the protection domain of the invention.

Claims (31)

1. a kind of for the material injection device on die casting machine, it includes the assembly that shoots material for injection molten metal bath, for foundry goods The die assembly of molding and the drive mechanism for providing injection power, the described assembly that shoots material includes barrel (10) and setting of sliding Plunger (2) in the inner chamber of described barrel (10), the tail end of described plunger (2) is connected with described drive mechanism, and its feature exists In: described plunger (2) includes plunger rod (20) and stopper head (21), and the side wall of described stopper head (21) is provided with and described barrel (10) the first sealing of inwall slipper seal, described stopper head (21) has middle cavity (22), and described middle cavity (22) has The opening connecting with the pressure chamber (100) in front of stopper head (21), described first sealing position is in described middle cavity (22) and institute State in the thin slice area (23) with certain deformability being formed between stopper head (21) outside wall surface.
2. according to claim 1 for the material injection device on die casting machine it is characterised in that: described plunger rod (20) remote It is provided with the second sealing from one end of described stopper head (21), described second sealing is close with the inwall slip of described barrel (10) Envelope.
3. according to claim 1 and 2 for the material injection device on die casting machine it is characterised in that: described first sealing For at least annular together seal convexity (24) being molded on described stopper head (21) lateral wall.
4. according to claim 3 for the material injection device on die casting machine it is characterised in that: described seal convexity (24) Both sides are respectively arranged with annular groove (240), and described annular groove (240) and described seal convexity (24) circumference be arranged in parallel.
5. according to claim 3 for the material injection device on die casting machine it is characterised in that: described seal convexity (24) sets It is equipped with twice, and between seal convexity described in twice (24), passes through described annular groove (240) together and be spaced apart.
6. according to claim 3 for the material injection device on die casting machine it is characterised in that: described seal convexity (24) Outline is arc-shaped structure；The longitudinal cross-section semicircular in shape of described annular groove (240).
7. according to claim 1 and 2 for the material injection device on die casting machine it is characterised in that: described middle cavity (22) Described opening at be provided with for limit described middle cavity (22) excessively expand or excess shrinkage stopping means.
8. according to claim 7 for the material injection device on die casting machine it is characterised in that: described stopping means include solid Dividing plate (27) on the end face (26) of described stopper head (21), and it is arranged at the push rod in described middle cavity (22) (25), one end of described push rod (25) is fixed on the bottom of described middle cavity (22), and 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) and described push rod (25) There is between the opening of described stopper head (21) gap (28) connecting described pressure chamber (100) and described middle cavity (22).
9. according to claim 8 for the material injection device on die casting machine it is characterised in that: the area of described dividing plate (27) Of substantially equal with the area of the end face (26) of described stopper head (21), described dividing plate (27) is bolted to described by some On the described end face (26) of stopper head (21).
10. according to claim 8 or claim 9 for the material injection device on die casting machine it is characterised in that: described push rod (25) from Extend the end face (26) of described stopper head (21) at the opening of described middle cavity (22), described dividing plate (27) with described push rod (25) the side center setting coordinating is fluted, and described push rod (25) is inserted in described groove.
11. according to claim 8 or claim 9 for the material injection device on die casting machine it is characterised in that: described push rod (25) Offer screw thread on the one end side coordinating with described middle cavity (22), at described middle cavity (22) bottom axle center, offer spiral shell Hole, described push rod (25) is passed through screw thread and is screwed in the bottom of described middle cavity (22) with screw cooperation and fix.
12. according to claim 2 for the material injection device on die casting machine it is characterised in that: described plunger rod (20) The other end is provided with the second stopper head (21 '), and described second sealing is arranged on described second stopper head (21 '), and described second Stopper head (21 ') and the central point of the length direction with respect to described plunger rod (20) for the described stopper head (21).
13. according to claim 2 for the material injection device on die casting machine it is characterised in that: described barrel (10) includes Flat part (108), and it is arranged on the gooseneck portion (109) of described flat part (108) discharging one end, described gooseneck portion (109) Inner chamber is tilted obliquely and is connected with die cavity, on the inner chamber of the inner chamber upper wall of described flat part (108) and described gooseneck portion (109) Wall by be arranged on described flat part (108) end rake (1080) transition connect, described rake (1080) minimum Point (1081) is less than the minimum point (1051) of the discharging opening (105) of described gooseneck portion (109).
14. according to claim 13 for the material injection device on die casting machine it is characterised in that: described first sealing, Die cavity between the inwall of described barrel (10) and the described discharging opening (105) of described barrel (10) is formed to be waited to shoot material for storing The described pressure chamber (100) of molten metal bath, the inwall of described first sealing, described second sealing and described barrel (10) Between die cavity formed for into described pressure chamber (100) supplement molten metal bath pressure-less chamber (101).
15. according to claim 14 for the material injection device on die casting machine it is characterised in that: described pressure chamber (100) Setting flow to described pressure chamber for molten metal bath from described pressure-less chamber (101) and described pressure-less chamber (101) between (100) the one-way flow device in, described one-way flow device is suitable to closing in described plunger (2) material shooting process, and in institute State in plunger (2) reseting procedure and open.
16. according to claim 15 for the material injection device on die casting machine it is characterised in that: described thin slice area (23) shape Become described one-way flow device.
17. according to claim 14-16 arbitrary described for the material injection device on die casting machine it is characterised in that: described barrel (10) side wall is provided with the molten metal passage (3) for injecting molten metal bath for described barrel (10), and described molten metal leads to Road (3) is communicated in Metal Melting room (5) by pipeline (4)；Described molten metal passage (3) is suitable to be located in described plunger (2) Connect described pressure chamber (100) during initial position, and be suitable to connect described no pressure when described plunger (2) carries out shooting material action Room (101).
18. according to claim 17 for the material injection device on die casting machine it is characterised in that: described molten metal passage (3) include along the vertical passageway (31) being radially arranged of described barrel (10) and axially arranged horizontal along described barrel (10) Passage (32), the basis that described interconnection (32) is arranged on described barrel (10) is internal, one end of described interconnection (32) with Described vertical passageway (31) connection, the other end of described interconnection (32) extends to the close described driving of described barrel (10) On the end face of mechanism side, and it is tightly connected with described pipeline (4).
19. according to claim 18 for the material injection device on die casting machine it is characterised in that: described interconnection (32) Extend to the outside of described barrel (10) from the inner chamber of described barrel (10), and described interconnection (32) positioned at described barrel (10) plunger seal is passed through in the one end outside.
20. according to claim 19 for the material injection device on die casting machine it is characterised in that: described barrel (10) outer Side is provided with the heating system for the molten metal bath in described barrel (10) is maintained at the temperature that shoots material.
21. according to claim 20 for the material injection device on die casting machine it is characterised in that: described heating system includes It is arranged at the fluid passage (104) on described barrel (10), described fluid passage (104) spiral surrounding is in described barrel (10) On inner chamber；It is arranged at the pump (103) between the inlet (1041) of described fluid passage (104) and liquid outlet (1042)；And Heater (102) to the fluid heating in described fluid passage (104)；Described fluid after heating passes through described pump (103) form closed circuit in described fluid passage (104), the hot fluid in described fluid passage (104) radiates with to institute The molten metal stating barrel (10) inner chamber is heated.
22. according to claim 21 for the material injection device on die casting machine it is characterised in that: described fluid passage (104) around the cavity arrangements of described flat part (108) and gooseneck portion (109), and described fluid passage (104) are straight with described Spacing between portion (108) inner chamber is roughly equal with the spacing of described gooseneck portion (109) inner chamber with described fluid passage (104).
23. according to claim 21 or 22 for the material injection device on die casting machine it is characterised in that: described fluid passage (104) it is provided with the storage tank (111) for storing fluid between described liquid outlet (1042) and described pump (103).
24. according to claim 21 or 22 for the material injection device on die casting machine it is characterised in that: described heater (102) it is cartridge heater, described cartridge heater is set in the outside of described barrel (10).
25. according to claim 21 or 22 for the material injection device on die casting machine it is characterised in that: described fluid passage (104) it is molded over the body interior of described barrel (10).
26. according to claim 25 for the material injection device on die casting machine it is characterised in that: described inlet (1041) And described liquid outlet (1042) takes shape on described barrel (10), and described inlet (1041) and described liquid outlet (1042) point It is not arranged on one end away from the described mouth that shoots material (105) of described barrel (10), described inlet (1041) is led to described fluid Pass through the first guide channel (106) between road (104) to connect, described first guide channel (106) is remote by described barrel (10) In the described fluid passage (104) shooting material mouth (105) one end described in one end of the described mouth that shoots material (105) extends close to；Institute State discharging opening (1042) to connect with described fluid passage (104) by the second guide channel (116).
27. according to claim 21 for the material injection device on die casting machine it is characterised in that: along described barrel (10) Outside wall surface offer spiral helicine groove (107), spiral helicine described groove (107) is prolonged along the axial direction of described barrel (10) Stretch, the outside of described barrel (10) is arranged with sleeve, and described sleeve is coordinated with the outer wall face seal of described barrel (10), described recessed Gap between groove (107) and the inwall of described sleeve forms described fluid passage (104).
28. according to claim 27 for the material injection device on die casting machine it is characterised in that: described sleeve be described cylinder Formula heater.
29. according to claim 28 for the material injection device on die casting machine it is characterised in that: described inlet (1041) And described liquid outlet (1042) takes shape on described cartridge heater, and described inlet (1041) and described liquid outlet (1042) It is arranged at the side away from the described mouth that shoots material (105), pass through between described inlet (1041) and described fluid passage (104) First guide channel (106) connects, and described first guide channel (106) is by described barrel (10) away from the described mouth that shoots material (105) one end extend close to described in shoot material mouth (105) one end described fluid passage (104) in；Described discharging opening (1042) connected with described fluid passage (104) by the second guide channel (116).
30. according to claim 21 for the material injection device on die casting machine it is characterised in that: described heater (102) outside is arranged with heat insulating sleeve (110).
31. according to claim 21 for the material injection device on die casting machine it is characterised in that: described flat part (108), Described gooseneck portion (109) and described heater (102) are integral type structure.
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CN106984793A (en) * 2017-06-08 2017-07-28 江苏华晟电气科技有限公司 One kind vibrations froth breaking die casting machine injecting device
CN107008879A (en) * 2017-06-08 2017-08-04 江苏华晟电气科技有限公司 A kind of molten rifle of die casting machine note
CN107486548A (en) * 2017-10-17 2017-12-19 浙江奥真电子科技有限公司 A kind of die casting equipment for alloy manufacture
CN108454041B (en) * 2018-01-26 2023-12-05 博创智能装备股份有限公司 Penetrate gluey plunger head and penetrate mucilage binding and put
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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CN204094100U (en) * 2014-09-16 2015-01-14 苏州橙石铸造有限公司 A kind of material injection device on die casting machine

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Effective date of registration: 20181130

Address after: 215000 First Complex Industrial Park of Exit Processing Zone 666 Jianlin Road, Suzhou High-tech Zone, Jiangsu Province

Patentee after: SDT-Smart Diecasting Technology (Suzhou) 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 CHENGSHI CASTING CO., LTD.