CN203863969U - Injection molding machine and pressure maintaining device thereof - Google Patents
Injection molding machine and pressure maintaining device thereof Download PDFInfo
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- CN203863969U CN203863969U CN201420201329.XU CN201420201329U CN203863969U CN 203863969 U CN203863969 U CN 203863969U CN 201420201329 U CN201420201329 U CN 201420201329U CN 203863969 U CN203863969 U CN 203863969U
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- pressurize
- cut
- hole
- oil cylinder
- melt adhesive
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- 238000001746 injection moulding Methods 0.000 title abstract description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 239000003292 glue Substances 0.000 claims abstract description 23
- 239000000155 melt Substances 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims description 67
- 230000001070 adhesive effect Effects 0.000 claims description 67
- 239000003921 oil Substances 0.000 claims description 44
- 210000004907 gland Anatomy 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 238000002844 melting Methods 0.000 abstract description 12
- 230000008018 melting Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 24
- 239000007924 injection Substances 0.000 description 24
- 239000006052 feed supplement Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 19
- 230000000149 penetrating effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000004513 sizing Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000015111 chews Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000693 micelle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection molding machine and a pressure maintaining device thereof. The pressure maintaining device comprises a flange, a cut-off mechanism and a pressure maintaining mechanism, wherein a communicated melt glue channel, a cut-off hole and a pressure maintaining hole are formed in the flange; the axis of the cut-off hole intersects that of the melt glue channel; the pressure maintaining hole is communicated with the melt glue channel and is positioned at the downstream of the cut-off hole; the cut-off mechanism comprises a cut-off oil cylinder and a movable cut-off unit driven by the cut-off oil cylinder; the cut-off unit is adaptive in the cut-off hole; under the driving of the cut-off oil cylinder, the cut-off unit moves in the cut-off hole to break over or cut off the melt glue channel; the pressure maintaining mechanism comprises a pressure maintaining oil cylinder and a movable pressure maintaining push rod driven by the pressure maintaining oil cylinder. After the cut-off mechanism cuts off the melt glue channel, the pressure maintaining push rod can be driven by the pressure maintaining oil cylinder and stretch into the pressure maintaining hole to press the melt glue flow. The injection molding machine and the pressure maintaining device thereof enable the glue melting and the push-out of the pressure maintaining unlocking mold to perform synchronously so that the cycle time is shortened. By adopting the corresponding technology, the defects of the conventional similar devices in the insulation, the cooling, the glue leak process and the quality guarantee of the glue stock can be avoided.
Description
Technical field
The utility model relates to former, relates in particular to a kind of Jet forming machine and pressurizer thereof.
Background technology
Fig. 1 shows the structure of a kind of Jet forming machine standard pressurizer of prior art, this pressurizer comprises material pipe, flange and She Zui, material pipe comprises rubber melting cylinder and is arranged at the screw arbor assembly in rubber melting cylinder, rubber melting cylinder connects to penetrate by flange to be chewed, in this structure, realize pressure holding function by the screw arbor assembly in material pipe.In conjunction with Fig. 2, the technical process of applying the Jet forming machine injection moulding of this pressurizer roughly comprises the steps: S1: mould matched moulds; This step required time is t1; S2: screw arbor assembly is chewed direction and moved the colloid that promotes melting and chew and inject mould through flange and penetrating successively to penetrating in rubber melting cylinder; This step required time is t2; S3: after injection moulding completes, screw arbor assembly continues to chew direction and do minute movement to penetrating, and the melt that injects mould is carried out to pressurize; This step required time is t3; S4: after pressurize completes, screw arbor assembly is return rubber melting cylinder, micelle is heated to be molten condition in rubber melting cylinder, and the melt in mould enters cooling stage simultaneously; Wherein, the cooling required time is t4, and the required time of melten gel is t5, and t5 is greater than t4, can complete coolingly in melten gel process, and therefore this step required time is the required time t5 of melten gel; S5: after melten gel completes, mould die sinking, push rod is return after ejecting moulded products again, and then the S1 of rebound step again starts next circulation, and the required time of this step comprises that pine moves back time t6, die sinking time t7, ejection cycle t8 and top and moves back time t9.For required total time of whole circulation be T1=t1+t2+t3+t5+t6+ t7+t8+t9.
For Jet forming machine, the traditional injection device shown in Fig. 1 can transmit melting sizing material smoothly, completes general function of injection.But in use, still there is following deficiency:
1,, according to Shooting Technique requirement, after screw arbor assembly has been injected, need carry out pressurize action, so that the plastic products of producing are complete, closely knit, there is good physical property, so after pressurize completes, screw arbor assembly just can be return and start follow-up melten gel action, has extended cycle time.
2, in the time that injection machine is produced heavier goods, injection volume is larger, goods in mould cooling during this period of time in, melten gel amount cannot reach requirement, the melten gel time will be greater than goods cool times, so must be after having melted glue could die sinking, the melten gel time is by the time outside occupying volume like this, production cycle is extended, affect output.
3, in the injection machine production cycle, die sinking, eject, push up that move back in actuation time can not melten gel, for the goods of larger injection volume, make cycle stretch-out.
Fig. 3 shows the structure of the another kind of tailored version Jet forming machine pressurizer of prior art.This pressurizer comprises the feed supplement plasticized screw 51b of the feed supplement barrel 54b that is installed on injection barrel 3b and oil pump or motor 52b drive.This pressurizer completes rear pump or output pump or motor 52b driving feed supplement plasticized screw 51b rotation in injection, outside feed is plastified into the melt with certain pressure and fill into the die cavity in cooling contraction, object is to make storage device continue storing in the dwell time, realize larger injection volume with less plasticization unit, realize the configuration of less expensive and energy-conservation.But this pressurizer needs independently power unit and plasticizing feeding device of supporting increase; And the plasticized screw that feed supplement is used can not be expected clearly action, normal shutdown all can make feed supplement quality badness; Because feed supplement pressurizer volume is little and conventionally work in 200 ~ 400 DEG C of high temperature, and this structure does not solve dynamical element thermal insulation, cooling problem, so working life is short, fault rate is high.
Fig. 4 shows the third pressure-holding apparatus structure of prior art.This structure is also to make storage device continue storing in the dwell time, realize larger injection volume with less plasticization unit, realize less expensive configuration and energy-conservation be object, comprise feed supplement barrel 54c, the feed supplement push rod 51c and the driving oil cylinder 52c that are installed on injection barrel 3c.When injection starts, feed supplement push rod 51c retreats under the pressure of glue, completes storing in feed supplement barrel 54c; Injection finishes, and drives oil cylinder 52c to promote feed supplement push rod 51c melten gel in feed supplement barrel 54c is extruded and realized feed supplement and pressurize.The shortcoming of this structure: have movement clearance between feed supplement barrel 54c and feed supplement push rod 51c, have a small amount of glue and leak, leak glue and can infiltrate driving oil cylinder 52c cylinder body and feed supplement push rod 51c gap, need to often clear up, otherwise drive oil cylinder to lose efficacy; Feed supplement push rod 51c can not stretch into injection barrel 11c in feed supplement barrel 54c, and gel resin completely has small part melten gel and is placed in for a long time and in feed supplement barrel 54c, degraded occurs and go bad, and affects injection-molded item quality; Drive oil cylinder 52c to be subject to feed supplement barrel 54c high-temperature baking, directly to contact with high-temperature components as the feed supplement push rod 51c of cylinder piston rod, can cause the interior oil temperature of oil cylinder too high, seal is deteriorated, and fault rate is high.
Utility model content
The utility model proposes a kind of Jet forming machine and pressurizer thereof, first solve melten gel and the cooling unlocking mold of pressurize in prior art and cannot walk abreast and make long problem of production cycle, also solved further existing special pressurizer clear material, adiabatic, cooling, in let out processing, product property and reliable and stable aspect the problem that faces.
For solving the problems of the technologies described above, the utility model proposes a kind of pressurizer of forming machine, comprise flange, disabling mechanism and pressure-keeping mechanism; Flange is provided with the melt adhesive runner of perforation, the cut-off hole that axis is pitched with described melt adhesive runner axes intersect, the pressurize hole that is communicated with and is positioned at downstream, described cut-off hole with described melt adhesive runner; Disabling mechanism comprises cut-off oil cylinder and the cut-off part being moved by described cut-off hydraulic oil cylinder driving, and described cut-off part adaptation is arranged in described cut-off hole; Under the driving of described cut-off oil cylinder, described cut-off part moves in hole and conducting or end described melt adhesive runner in cut-off; The pressurize push rod that pressure-keeping mechanism comprises pressurize oil cylinder and moved by described pressurize hydraulic oil cylinder driving, after described disabling mechanism cut-off melt adhesive runner, described pressurize push rod can stretch in described pressurize hole and exert pressure in described melt adhesive runner under the driving of pressurize oil cylinder.
Preferably, described cut-off part is pin rod shape, which is provided with through hole; Thereby described cut-off part moves and makes described through hole be communicated with or not be communicated with conducting or cut-off melt adhesive runner with described melt adhesive runner along cut-off part axis direction in described cut-off hole.
Preferably, on described cut-off part, anti-rotation locating part is installed, with radially spacing in described cut-off hole to cut-off part.
Preferably, described pressure-keeping mechanism also comprises one-way joint and pressurize barrel; In described pressurize barrel, be provided with storage cavity, pressurize barrel is fixedly installed between described pressurize oil cylinder and described flange, and storage cavity is connected with described pressurize hole; Described pressurize push rod movably adaptation is arranged in described storage cavity and can stretches in described pressurize hole, pressurize push rod connects described pressurize oil cylinder by described one-way joint, and described one-way joint only allows pressurize push rod being subject to described pressurize hydraulic oil cylinder driving in the time that described melt adhesive runner direction moves; In the time of described melt adhesive runner conducting, described pressurize push rod can move to described pressurize oil cylinder direction under the pressure-acting in described melt adhesive runner; After described disabling mechanism cut-off melt adhesive runner, described pressurize push rod can be under the driving of described pressurize oil cylinder moves and stretches into described pressurize hole to described flange direction.
Preferably, be provided with the leakage glue feeder being communicated with described storage cavity in described pressurize barrel, pressurize barrel sidewall is provided with the discharge gate being communicated with described leakage glue feeder.
Preferably, described pressurize oil cylinder comprises pressurize driving cylinder body, connects respectively gland and the bonnet at pressurize driving cylinder body two ends, and adaptation is arranged in pressurize driving cylinder body and stretches out the external pressurize piston rod of pressurize driving cylinder, described gland and pressurize barrel join, described pressurize piston rod extend out in described pressurize barrel from described gland, and described pressurize piston rod end connects described pressurize push rod by described one-way joint.
Preferably, on described pressurize piston rod, be also connected with indicating arm, it is external that described indicating arm stretches out described pressurize driving cylinder from described bonnet.
Preferably, between described gland and described pressurize barrel, be also provided with heat insulating mattress.
Preferably, in described gland, bearing is installed, on gland, is also provided with the Inlet and outlet water joint being communicated with bearing installation place.
Preferably, described pressurizer also comprises heat preservation mechanism, and described heat preservation mechanism comprises Heating tube, thermocouple and PID temperature controller, and described thermocouple is arranged in described Heating tube outward and is electrically connected described PID temperature controller; Described Heating tube is wrapped in respectively outside described flange and described pressurize barrel.
Preferably, described disabling mechanism also comprises first piston ring, and described first piston ring set is located on described cut-off part; Described pressure-keeping mechanism also comprises the second piston ring, and described the second piston ring set is located on described pressurize push rod.
The utility model also provides a kind of Jet forming machine, comprises pressurizer as above.
Compared with prior art, the utility model at least has following beneficial effect:
1, replace the screw arbor assembly of prior art to realize pressurize by pressure-keeping mechanism, saved the screw arbor assembly of Jet forming machine in the shared time of pressurize link.
2, by disabling mechanism, melt adhesive runner being divided into can mutual conduction or two parts of cut-off, makes to be communicated with two parts respectively and the melten gel process of carrying out can be synchronizeed with the cooling unlocking mold ejection process of pressurize and carried out shortening cycle time.
3, disabling mechanism and pressure-keeping mechanism be installed on flange realized the function of cut-off and pressurize, in the time being applied on existing common Jet forming machine, between only the flange that disabling mechanism and pressure-keeping mechanism are installed need being disposed to material pipe and penetrating and chew, without material is managed and penetrated to chew and change, use flexibility and reliability.
4, because the stroke of pressurize push rod can reach melt adhesive runner, after completing, pressurize can, to implementing gel resin thoroughly in pressurize barrel, melten gel be upgraded in time, ensure reliably injection-molded item quality.
5, pass through to leak glue feeder and discharge gate, the melten gel of revealing can collect in time and discharge the inherent injection of pressurize barrel with pressurize time, possesses self-cleaning function, and device of the present utility model can be moved by long time stability.
6, by indicating arm, the position of pressurize push rod is indicated, conveniently inspect pressure maintaining period.
7, by heat insulating mattress, cooled circulated medium, the high-temperature areas such as the barrel in pressurizer, pressurize push rod and low-temperature regions such as driving oil cylinder are isolated, ensure that seal and working media hydraulic oil, in applicable temperature operation, ensure the reliability of long-term operation.
8, there is stable pressurize and temperature and automatically control, automatically safeguard, each several part is moved reliably and with long-term.
Brief description of the drawings
Fig. 1 is the structural representation of the Jet forming machine standard pressurizer of prior art.
Fig. 2 is the Jet forming machine Shooting Technique process schematic diagram of application drawing 1 pressurizer.
Fig. 3 is a kind of bolt special formula of prior art pressure-holding apparatus structure schematic diagram.
Fig. 4 is a kind of special piston formula of prior art pressure-holding apparatus structure schematic diagram.
Fig. 5 is the perspective view of the utility model Jet forming machine pressurizer embodiment.
Fig. 6 is the side direction structural representation of the utility model Jet forming machine pressurizer embodiment.
Fig. 7 is the cutaway view of the utility model Jet forming machine pressurizer embodiment under packing state.
Fig. 8 is C place partial enlarged drawing in the utility model Fig. 7.
Fig. 9 is B-B schematic cross-section in the utility model Fig. 7.
Figure 10 is the cutaway view of the utility model Jet forming machine pressurizer embodiment under inject state.
Figure 11 is the structural representation of the utility model Jet forming machine embodiment.
Figure 12 is the schematic diagram of the utility model Jet forming machine Shooting Technique process.
Wherein, description of reference numerals is as follows: 1, material pipe; 11, rubber melting cylinder; 12, screw arbor assembly; 2, flange; 21, melt adhesive runner; 211, Part I; 212, Part II; 22, cut-off hole; 23, pressurize hole; 205, distance rod; 3, She Zui; 4, disabling mechanism; 41, cut-off pin; 411, through hole; 421, cut-off piston rod; 422, cut-off drives cylinder body; 43, anti-rotation locating part; 44, connecting rod; 450, cylinder body; 451, dividing plate; 452, gland; 453, bonnet; 454, oil connection; 5, pressure-keeping mechanism; 51, pressurize push rod; 521, pressurize piston rod; 522, pressurize drives cylinder body; 53, one-way joint; 54, pressurize barrel; 541, storage cavity; 542, leak glue feeder; 543, discharge gate; 545, drainage conduit; 55, indicating arm; 61, Heating tube; 62, thermocouple; 71, heat insulating mattress; 72, copper sheathing; 73, Inlet and outlet water joint; 81, first piston ring; 10, feeding device; 30, mould; 100, melt.
Detailed description of the invention
In order to further illustrate principle of the present utility model and structure, now by reference to the accompanying drawings preferred embodiment of the present utility model is elaborated.
Consult Fig. 5 to Figure 10, the utility model provides a kind of pressurizer can be applicable on common Jet forming machine, mainly comprise material pipe 1, flange 2, penetrate chew 3, disabling mechanism 4 and pressure-keeping mechanism 5.In flange 2, be provided with the melt adhesive runner 21 of perforation, material pipe 1 and penetrating is chewed 3 adpting flanges 2 and respectively being communicated with one end of melt adhesive runner 21 respectively, wherein, expects to manage 1 and chews 3 corresponding constructions that can adopt prior art with penetrating.Disabling mechanism 4 and pressure-keeping mechanism 5 integrated installations are on flange 2, particularly, flange 2 is provided with cut-off hole 22 and pressurize hole 23, the cut-off axis in hole 22 and the axis square crossing of melt adhesive runner 21, cut-off hole 22 is combined to form one " ten " font with melt adhesive runner 21, and pressurize hole 23 is connected with melt adhesive runner 21 and is positioned at the downstream of ending hole 22.Disabling mechanism 4 arranges melt adhesive runner 21 is carried out to conducting or cut-off corresponding to cut-off hole 22, taking these disabling mechanism 4 installation places as boundary, melt adhesive runner 21 is divided into material pipe 1 Part I being communicated with 211 with penetrating and chews 3 Part II that are communicated with 212; 5 of pressure-keeping mechanism arrange corresponding to pressurize hole 23, arrange corresponding to the Part II 212 of melt adhesive runner 21, end after melt adhesive runner 21 at disabling mechanism 4, and pressure-keeping mechanism 5 can be exerted pressure in melt adhesive runner 21, thereby plays pressure maintaining effect.
Consult Fig. 7 and Figure 10, the interior adaptation in cut-off hole 22 of flange 2 is equipped with a cut-off pin 41, and cut-off pin 41 is provided with the through hole 411 that an allowed melt 100 radially connecting passes through.The upper end (taking Fig. 7 view as reference) of cut-off pin 41 is by connecting rod 44 connection cut-off piston rods 421, and cut-off piston rod 421 is installed on to end and drives cylinder body 422 interior by oil pressure actuated lifting, thereby drives cut-off to sell 41 in the cut-off interior movement in hole 22.Cut-off pin 41 is interior in cut-off hole 22 to be moved along cut-off hole 22 axis directions, and in the time that the through hole 411 on cut-off pin 41 is communicated with melt adhesive runner 21, Part I 211 and the Part II 212 of melt adhesive runner 21 communicate, melt adhesive runner 21 conductings, as shown in figure 10; In the time that the via 411 on cut-off pin 41 is not communicated with melt adhesive runner 21, the Part I 211 of melt adhesive runner 21 and Part II 212 are cut off pin 41 and intercept, and melt adhesive runner 21 ends, as shown in Figure 7.
In the present embodiment, cut-off pin 41, connecting rod 44, cut-off piston rod 421 and cut-off drive cylinder body 422 jointly to form can conducting or the disabling mechanism 4 of cut-off melt adhesive runner 21.Cut-off piston rod 421 drives cylinder body 422 to form cut-off oil cylinder with cut-off, adopts oil pressure actuated cut-off pin 41 to move, if the length of cut-off piston rod 421 is enough directly connected with cut-off pin 41, connecting rod 44 can also remove.In other embodiment, also can adopt other straight line driving mechanisms to drive cut-off pin 41 to move.
Further, because cut-off pin 41 in the present embodiment is pin rod shape, for avoiding it to cause the axis of through hole 411 not parallel with the axis of melt adhesive runner 21 in the cut-off interior rotation in hole 22, lower end at cut-off pin 41 is provided with anti-rotation locating part 43, anti-rotation locating part 43 is radially spacing in cut-off hole 22 to cut-off part 41, cut-off pin 41 can not be rotated in running, guarantee that cut-off is reliable with the having stable behavior of conducting melt adhesive runner.
In addition, consult Fig. 8, on cut-off pin 41, be also arranged with first piston ring 81, and first piston ring 81 is respectively in the both sides of through hole 411 on cut-off pin 41, this first piston ring 81 is made by high-temperature alloy material full of elasticity, can under high temperature and abrasion state, use for a long time, ensure positiver sealing, effectively prevent that melt from oozing out outside flange 2 in the time that cut-off pin 41 moves.
Still consult Fig. 7 and Figure 10, pressure-keeping mechanism 5 comprises pressurize push rod 51 and the pressurize oil cylinder in order to drive pressurize push rod 51 to move.In the present embodiment, pressurize oil cylinder comprises that pressurize drives cylinder body 522 and adaptation to be arranged at pressurize and drives in cylinder body 522 and outwardly directed pressurize piston rod 521.Wherein, pressurize drives cylinder body 522 and the cut-off in disabling mechanism 4 to drive cylinder body 422 to be positioned at same cylinder body 450, dividing plate 451 is set and cylinder body 450 is divided into pressurize drives cylinder body 522 and cut-off to drive 422 two parts of cylinder body cylinder body 450 is interior, cylinder body 450 two ends are connected with respectively gland 452 and bonnet 453, and cut-off piston rod 421 and pressurize piston rod 521 are all from gland 452 stretches out cylinder body 450.On bonnet 453 and cylinder body 450, be respectively equipped with two oil connections 454, form two groups of oil connections, correspond respectively to pressurize and drive cylinder body 522 and cut-off to drive cylinder body 422 to carry out oil pressure control, thereby respectively cut-off piston rod 421 and pressurize piston rod 521 are driven.Cylinder body 451 arranges with flange 2 intervals, between gland 452 and flange 2, is connected with distance rod 205.In other embodiments, pressurize oil cylinder and cut-off oil cylinder can also be two independent driving oil cylinders.
Pressurize piston rod 521 connects pressurize push rod 51 upper ends by an one-way joint 53 from gland 452 stretches out, and pressurize push rod 51 lower ends are stretched in the pressurize hole 23 of flange 2.In the time being blocked between the Part I 211 of melt adhesive runner 21 and Part II 212, pressurize push rod 51 drives pressurize push rod 51 to move to melt adhesive runner 21 directions by pressurize piston rod 521, extrudes melten gel, plays pressurize feeding effect.On pressurize piston rod 521, be also connected with an indicating arm 55, indicating arm 55 stretches out pressurize from bonnet 453 and drives cylinder body 522, and it stretches out the opposite direction that stretches out of direction and pressurize piston rod 521; Indicating arm 55 is along with pressurize piston rod 521 moves together, and in the time that pressurize piston rod 521 drives pressurize push rod 51 to carry out pressurize, indicating arm 55 stretches out pressurize and drives length outside cylinder body 522 can indicate the position of pressurize push rod 51, conveniently inspects.
53 of one-way joints allow pressurize push rods 51 driven by pressurize piston rod 521 in the time that melt adhesive runner 21 directions move, in the time that moving down, can move and realize pressurize by driven pressurize push rod 51 in pressurize piston rod 521, in the time that pressurize piston rod 521 is moved up by oil pressure actuated to return pressurize to drive cylinder body 522, can not drive pressurize push rod 51 to move together, can prevent from like this vacuumizing.
Pressure-keeping mechanism 5 also comprises a pressurize barrel 54, and pressurize barrel 54 is arranged between gland 452 and flange 2, is provided with the storage cavity 541 being connected with the interior pressurize of flange 2 hole 23 in pressurize barrel 54.Pressurize push rod 51 movably adaptation shuttles back and forth in storage cavity 541, and pressurize piston rod 521 extend out in storage cavity 541 from gland 452, then connects pressurize push rod 51 by one-way joint 53.When melt adhesive runner 21 conductings, melt 100 from the rubber melting cylinder 11 of material pipe 1 successively through flange 2 with penetrate and chew 3 when injecting in mould, pressurize push rod 51 can rise and move toward pressurize oil cylinder direction under injection pressure (pressure while injection in melt adhesive runner) effect, melt 100 is filled the storage cavity 541 of pressurize barrel 54, completes automatic storing; When injection finishes, disabling mechanism 4 ends after melt adhesive runner 21, pressurize push rod 51 moves to flange 2 directions under the driving of pressurize piston rod 521, and the melt 100 in storage cavity 541 can be pushed to supplementary sizing material and pressurize in melt adhesive runner 21 and then mold cavity by pressurize push rod 51.
On pressurize push rod 51, be arranged with the second piston ring (not shown), in order to carry out high temperature resistant melt sealing.And for oozing in the 54 interior long-term accumulation of pressurize barrel, can collect outer row by the drainage conduit 545 being installed on pressurize barrel 54.Concrete, consult Fig. 9, pressurize barrel 54 medium positions have larger sectional dimension, in the pressurize barrel 54 of this position, be provided with the leakage glue feeder 542 being communicated with storage cavity 541, pressurize barrel 54 sidewalls are provided with the discharge gate 543 being communicated with this leakage glue feeder 542, and drainage conduit 545 is installed on discharge gate 543.
For the heat that slows down melt 100 in pressurize barrel 54 transmits to cylinder body 450, between gland 452 and pressurize barrel 54, be also provided with heat insulating mattress 71, heat insulating mattress 71 can adopt the heat-insulating material such as asbestos or pottery.More preferably, in gland 452, stretch out place corresponding to pressurize piston rod 521 with cut-off piston rod 421 copper sheathing 72 is also installed, copper sheathing 72 facilitates the movement of pressurize piston rod 521 and cut-off piston rod 421 as bearing, on gland 452, be also provided with the Inlet and outlet water joint 73 being communicated with copper sheathing installation place, carry out cooling by water circulation to copper sheathing 72, thereby to being done to intercept completely to the heat conduction of cylinder body 450 by pressurize barrel 54, make cylinder body 450 not affected by high-temperature region heat conduction.
More preferably, pressurizer of the present utility model also comprises heat preservation mechanism, and heat preservation mechanism comprises Heating tube 61, thermocouple 62 and PID temperature controller (not shown), and thermocouple 62 is arranged in outside Heating tube 61 and is electrically connected PID temperature controller; Heating tube 61 is wrapped in respectively material pipe 1, flange 2, penetrate chew 3 and pressurize barrel 54 outside.PID temperature controller can be the controller of Jet forming machine, thermocouple 62 is measured actual temperature, feed back to controller and do PID temperature control, control Heating tube 61 respectively to material pipe 1, flange 2, penetrate chew 3 and pressurize barrel 54 in melt 100 carry out Heat preservation, ensure the suitable temperature of melt 100.
The course of action of this pressurizer in Jet forming machine injection cycle is as follows:
1, on the basis of state shown in Fig. 7, cut-off drives the interior oil pressure actuated cut-off of cylinder body 422 piston rod 421 to drive on cut-off pin 41 and moves, through hole 411 on cut-off pin 41 is communicated with the melt adhesive runner 21 of flange 2, makes the melt adhesive runner 21 of flange 2 in conducting state, as shown in figure 10.
2, the injection that moves to left in rubber melting cylinder 11 of the screw arbor assembly 12 in material pipe 1, melt 100 sells 41 and penetrate and chew 3 injection moulds by flange 2, cut-off successively.
3, due to melt adhesive runner 21 and die cavity resistance, pressurize push rod 51 passive rising under melt 100 pressure, melt 100 enters in the storage cavity 541 of pressurize barrel 54, completes the interior storing process of pressurize barrel 54.
4, inject completely, cut-off drives the interior oil pressure actuated of cylinder body 422 cut-off piston rod 421 to drive cut-off pin 41 to move down, and the through hole 411 of cut-off pin 41 leaves the melt adhesive runner 21 of flange 2, melt adhesive runner 21 is ended, as shown in Figure 7.
5, system oil pressure drives cylinder body 522 to drive pressurize piston rod 521 to move down with the pressure that can set by pressurize, promotes pressurize push rod 51 to melt adhesive runner 21 and then to melt extrusion 100 feeding in die cavity, completes pressure maintaining period.This process can be inspected by observing indicating arm 55 position of pressurize push rod 51.
6, at next cycle, cut-off pin 41 makes after melt adhesive runner 21 conductings, before screw arbor assembly 12 action of injection, pressurize push rod 51 can be advanced to the end by pressurize piston rod 521, carry out the action of maintainability gel resin, remove the old glue in pressurize barrel 54, safeguard that the sizing material in pressurize barrel 54 upgrades in time and can not be detained for a long time and cause degraded rotten.
As shown in figure 11, the utility model also provides a kind of Jet forming machine that adopts above-mentioned pressurizer, and feeding device 10 binder pipes 1 and feed pipe 1 supplements new micelle, penetrates to chew 3 connecting molds 30 and inject melt in the die cavity of mould 30.Consult Figure 12, the technical process of a working cycles of this Jet forming machine roughly comprises the steps:
S10: mould matched moulds, in the process of matched moulds, cut-off pin 41 moves the melt adhesive runner 21 of conducting flange 2.Matched moulds required time is t1, and it is t11 that cut-off pin 41 moves conducting melt adhesive runner 21 required times, and t11 is included in t1, and therefore the required time of this step is t1.
S20: screw arbor assembly 12 moves melt 100 is injected to mould.The required time of this step is t2.
S30: cut-off pin 41 moves the melt adhesive runner 21 of flange 2 is ended.The required time of this step is t10.
S40: pressurize push rod 51 moves down Part II 212 pressurizes to melt adhesive runner 21 and then makes melt 100 pressurizes in mould, and the melt 100 that pressurize completes in rear mold enters cooling stage, cooling complete, mould die sinking.The required time of this process be dwell time t3, cool time t4 and the summation of die sinking time t7.Pressurize, cooling and die sinking during this period of time in, can carry out melten gel step simultaneously, melten gel time t5 is without extra holding time again.
S50: the push rod in mould ejects moulded products and returns, the required time of this step is that time t9 sum is moved back on ejection cycle t8 and top, during this period of time, still can carry out melten gel.After this step, completed an injection cycle, the S10 of rebound step again starts next circulation.
The required time of whole working cycles is T2=t1+t2+t10+t3+t4+ t7+t8+t9, the time T 1=t1+t2+t3+t5+t6+ t7+t8+t9 of prior art working cycles in comparison diagram 2, the time difference T1-T2=t5+t6-t4-t10 of T1 and T2, the time t10 that pine moves back time t6 and the mobile cut-off of cut-off pin melt adhesive runner is shorter, ignore, and melten gel time t5 is more than t4 length cool time, by contrast, obviously, the required time of working cycles of Jet forming machine of the present utility model will significantly reduce compared to existing technology, shorten the production cycle.
According to the above-mentioned introduction to the utility model structure, with respect to prior art, the utility model at least has the following advantages:
1, replace the screw arbor assembly of prior art to realize pressurize by pressure-keeping mechanism, saved the screw arbor assembly of Jet forming machine in the shared time of pressurize link.
2, by disabling mechanism, melt adhesive runner being divided into can mutual conduction or two parts of cut-off, makes to be communicated with two parts respectively and the melten gel process of carrying out can be synchronizeed with the cooling unlocking mold ejection process of pressurize and carried out shortening cycle time.
3, disabling mechanism and pressure-keeping mechanism be installed on flange realized the function of cut-off and pressurize, in the time being applied on existing common Jet forming machine, between only the flange that disabling mechanism and pressure-keeping mechanism are installed need being disposed to material pipe and penetrating and chew, without material is managed and penetrated to chew and change, use flexibility and reliability.
4, because the stroke of pressurize push rod can reach melt adhesive runner, after completing, pressurize can, to implementing gel resin thoroughly in pressurize barrel, melten gel be upgraded in time, ensure reliably injection-molded item quality.
5, pass through to leak glue feeder and discharge gate, the melten gel of revealing can collect in time and discharge the inherent injection of pressurize barrel with pressurize time, possesses self-cleaning function, and device of the present utility model can be moved by long time stability.
6, by indicating arm, the position of pressurize push rod is indicated, conveniently inspect pressure maintaining period.
7, by heat insulating mattress, cooled circulated medium, the high-temperature areas such as the barrel in pressurizer, pressurize push rod and low-temperature regions such as driving oil cylinder are isolated, ensure that seal and working media hydraulic oil, in applicable temperature operation, ensure the reliability of long-term operation.
8, there is stable pressurize and temperature and automatically control, automatically safeguard, each several part is moved reliably and with long-term.
These are only better possible embodiments of the present utility model, and unrestricted protection domain of the present utility model, the equivalent structure that all utilization the utility model descriptions and accompanying drawing content have been done changes, and is all included in protection domain of the present utility model.
Claims (1)
1. a pressurizer for forming machine, is characterized in that, comprising:
Flange, which is provided with the melt adhesive runner of perforation, the cut-off hole that axis is pitched with described melt adhesive runner axes intersect, the pressurize hole that is communicated with and is positioned at downstream, described cut-off hole with described melt adhesive runner;
Disabling mechanism, comprises cut-off oil cylinder and the cut-off part being moved by described cut-off hydraulic oil cylinder driving, and described cut-off part adaptation is arranged in described cut-off hole; Under the driving of described cut-off oil cylinder, described cut-off part moves in hole and conducting or end described melt adhesive runner in cut-off;
Pressure-keeping mechanism, the pressurize push rod that comprises pressurize oil cylinder and moved by described pressurize hydraulic oil cylinder driving, after described disabling mechanism cut-off melt adhesive runner, described pressurize push rod can stretch in described pressurize hole and exert pressure in described melt adhesive runner under the driving of pressurize oil cylinder.
2. pressurizer according to claim 1, is characterized in that: described cut-off part is pin rod shape, which is provided with through hole; Thereby described cut-off part moves and makes described through hole be communicated with or not be communicated with conducting or cut-off melt adhesive runner with described melt adhesive runner along cut-off part axis direction in described cut-off hole.
3. pressurizer according to claim 2, is characterized in that: on described cut-off part, anti-rotation locating part is installed, with radially spacing in described cut-off hole to cut-off part.
4. pressurizer according to claim 1, is characterized in that: described pressure-keeping mechanism also comprises one-way joint and pressurize barrel; In described pressurize barrel, be provided with storage cavity, pressurize barrel is fixedly installed between described pressurize oil cylinder and described flange, and storage cavity is connected with described pressurize hole; Described pressurize push rod movably adaptation is arranged in described storage cavity and can stretches in described pressurize hole, pressurize push rod connects described pressurize oil cylinder by described one-way joint, and described one-way joint only allows pressurize push rod being subject to described pressurize hydraulic oil cylinder driving in the time that described melt adhesive runner direction moves;
In the time of described melt adhesive runner conducting, described pressurize push rod can move to described pressurize oil cylinder direction under the pressure-acting in described melt adhesive runner; After described disabling mechanism cut-off melt adhesive runner, described pressurize push rod can be under the driving of described pressurize oil cylinder moves and stretches into described pressurize hole to described flange direction.
5. pressurizer according to claim 4, is characterized in that: in described pressurize barrel, be provided with the leakage glue feeder being communicated with described storage cavity, pressurize barrel sidewall is provided with the discharge gate being communicated with described leakage glue feeder.
6. pressurizer according to claim 4, it is characterized in that: described pressurize oil cylinder comprises pressurize driving cylinder body, connects respectively gland and the bonnet at pressurize driving cylinder body two ends, and adaptation is arranged in pressurize driving cylinder body and stretches out the external pressurize piston rod of pressurize driving cylinder, described gland and pressurize barrel join, described pressurize piston rod extend out in described pressurize barrel from described gland, and described pressurize piston rod end connects described pressurize push rod by described one-way joint.
7. pressurizer according to claim 6, is characterized in that: on described pressurize piston rod, be also connected with indicating arm, it is external that described indicating arm stretches out described pressurize driving cylinder from described bonnet.
8. pressurizer according to claim 6, is characterized in that: between described gland and described pressurize barrel, be also provided with heat insulating mattress.
9. pressurizer according to claim 8, is characterized in that: in described gland, bearing is installed, is also provided with the Inlet and outlet water joint being communicated with bearing installation place on gland.
10. pressurizer according to claim 4, it is characterized in that: described pressurizer also comprises heat preservation mechanism, described heat preservation mechanism comprises Heating tube, thermocouple and PID temperature controller, and described thermocouple is arranged in described Heating tube outward and is electrically connected described PID temperature controller; Described Heating tube is wrapped in respectively outside described flange and described pressurize barrel.
11. pressurizers according to claim 1, is characterized in that: described disabling mechanism also comprises first piston ring, and described first piston ring set is located on described cut-off part;
Described pressure-keeping mechanism also comprises the second piston ring, and described the second piston ring set is located on described pressurize push rod.
12. 1 kinds of Jet forming machines, is characterized in that, comprise the pressurizer as described in claim 1-11 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201329.XU CN203863969U (en) | 2014-04-23 | 2014-04-23 | Injection molding machine and pressure maintaining device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201329.XU CN203863969U (en) | 2014-04-23 | 2014-04-23 | Injection molding machine and pressure maintaining device thereof |
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| Publication Number | Publication Date |
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| CN203863969U true CN203863969U (en) | 2014-10-08 |
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| CN201420201329.XU Expired - Lifetime CN203863969U (en) | 2014-04-23 | 2014-04-23 | Injection molding machine and pressure maintaining device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999634A (en) * | 2014-04-23 | 2015-10-28 | 震雄机械（深圳）有限公司 | Ejection molding machine and dwelling apparatus thereof |
-
2014
- 2014-04-23 CN CN201420201329.XU patent/CN203863969U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999634A (en) * | 2014-04-23 | 2015-10-28 | 震雄机械（深圳）有限公司 | Ejection molding machine and dwelling apparatus thereof |
| CN104999634B (en) * | 2014-04-23 | 2017-07-28 | 震雄机械（深圳）有限公司 | Jet forming machine and its pressurizer |
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| C14 | Grant of patent or utility model | ||
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| CP02 | Change in the address of a patent holder |
Address after: Building G, Building 102, Zone A Office Building, Zhenxiong Industrial Park, No. 177 Renmin West Road, Jinsha Community, Kengzi Street, Pingshan District, Shenzhen City, Guangdong Province, 518000. Building A, Building B, Building C, Building D, Building E-1, Building F, Building B, Building 7, Building 8, Building 10, Building 11 Patentee after: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. Address before: 518000, Building B-1, Building C-1, Building D, Building E-1, Building F-1, Zone B-7-B, No. 31 Renmin Middle Road, Kengzi Office, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. |
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| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |
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