CN105818318A

CN105818318A - Large and ultralarge plastic injection molding process and equipment

Info

Publication number: CN105818318A
Application number: CN201610170194.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Tianjin Gepaisi Technology Co Ltd
Current assignee: Tianjin Gepaisi Technology Co Ltd
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2016-08-03

Abstract

The invention provides a large and ultralarge plastic injection molding process and equipment. The process has the following main characteristics: a locking mold has two grades; the first grade is main oil pressure of a system, and the second grade is pressure increased by a supercharger, so that the problem of insufficient oil caused by accumulated leakage quantity of a pressure cylinder through once pressurization is solved; when a storage piston rod retreats to a sensor 3.30=1, a screw motor 1.3 is stopped; when a storage cylinder pushes the sensor to 3.4=1, the screw motor 1.3 obtains a starting command, and a screw rod is normally operated, so that normal actuation of automatic process programs is guaranteed; the process has inclusiveness; the equipment mainly comprises an injecting cylinder, an injecting piston, the storage cylinder and a storage piston; the linear movement heat seal of a distributor and a distributor mandrel is realized through multiple piston clamping rings; and the equipment structure still has the clamping ring expansion force at high temperature of 400 DEG C, can resist the pressure of 50-100 Mpa, and cannot generate leakage and smoke.

Description

Large-scale, super-large size plastic injection moulding process and equipment

Technical field

The present invention relates to plastic-injection moulding machine technical field, particularly to be the injection of large-scale, super-large size plastic The equipment of molding and technique.

Background technology

The plastic-injection moulding machine of prior art is mainly horizontal type, single exit point injection type both at home and abroad, middle-size and small-size Injection machine is such, and theoretical injection volume is more than 20,000cm³Large-scale, super-large size plastic injection moulding equipment remain on follow this Pattern, cause that this exit point horizontal, single injects large-scale, super-large size plastic injection moulding equipment machine heavy, machine energy consumption high, The technological deficiencies such as automaticity is low.For above-mentioned technological deficiency, at number of patent application: 02128802.X, title: " ultra-large type Plastic injection moulding process and equipment ", 200310107260.0, title: " super-large size plastic injection moulding process and equipment ", 200510136039.7, title: " super-large size plastic injection moulding process and equipment ", the technology in file discloses mould Orbital heat flux Road multipoint injection molding, mode locker locking die and realize mould self-locking, the process form of " flat beat stand out ", to take goods car automatic Take out goods；It is at number of patent application: 201210203534.5, entitled: " super-large size plastic injection moulding equipment and technique ", Technology in file discloses the multiple nozzles for rectangular section being arranged in the quiet mould of mould, nozzle and quiet model cavity nozzle hole Between be provided with heat insulation politef set, nozzle side can be inserted into electrically heated rod multistage install cast aluminium heat conducting sleeve and nozzle Fastening, owing to being provided with heat insulation politef set, nozzle processing temperature improve, each nozzle can unobstructed work, can drop The percent defective at low start initial stage.Though it is large-scale, super-large size plastic injection moulding machine that above-mentioned process and equipment solve some Technological deficiency, but still there is the problem that large-scale, super-large size plastic injection molding process is not perfect, e.g., machine is continuous Giving when moulding, due to die sinking, to take out time of goods unstable, or screw rod gives and moulds the shakiness produced due to the reason such as temperature, material Fixed, storage cylinder promotes when also not arriving level sensor before storage cylinder, has surmounted the startup sensor of Accumulator arrangements 1, has caused automatically Program can not be normally carried out；Due to pressurization of pressurized cylinder, pressurized cylinder accumulation amount of leakage causes the high-pressure section of pressurized cylinder Low on fuel, need to go to manual mode from auto state and carry out repairing, have impact on auto-programming and be normally carried out；Due to injection cylinder, Storage cylinder, allotter mandrel heat seal are bad, cause machine to have slight smog, pollution condition occur.

Summary of the invention

In place of it is an object of the invention to overcome above-mentioned technical deficiency, it is provided that a kind of large-scale, super-large size plastic injection moulding tool Having can the process of pardon, it is ensured that auto-programming is normally carried out；A kind of large-scale, super-large size plastic injection moulding equipment, carries High injection cylinder, storage cylinder, the rectilinear movement hot high pressure sealing property of allotter mandrel, stop material and reveal and the smog that produces.

Solve the technical scheme that above-mentioned technical problem is taked:

A kind of large-scale, super-large size plastic injection moulding process, it is characterised in that described technique is carried out as follows:

18th step, electromagnetic valve 6.18,6.9,6.1 must be electric, and allotter closes, to 3.6=1, from the 19th step to the 31st step, Open to the 11st step, allotter from the first step again, to 3.7=1, during this, give molding machine motor 1.3 all the time in operating, store piston Bar retreats continuously, taking goods overlong time or giving molding machine screw rod and give and mould excessive velocities such as technical process, works as storage director 8.19 when backing to screw rod off-position sensor 3.30=1, gives molding machine motor 1.3 and stops, and auto-programming is to the 12nd step, storage cylinder 8.20 advance, and to storage cylinder during level sensor 3.4=1, give molding machine motor 1.3 and obtain starting order, and screw rod runs well again. Above-described process ensuring that auto-programming of the present invention has can pardon, it is ensured that auto-programming is normally carried out.

5th step, electromagnetic valve 6.33,6.1 must be electric, and the 1st grade of form of mode locker locked mode, system oil pressure is main system pressure, extremely The 1st grade of form pressure display 7.5-1=1 of pressure transmitter locked mode；6th step, electromagnetic valve 6.11,6.1 electric, mode locker locked mode the 2 grades of forms, system oil pressure is the pressure after pressurizing cylinder 4.4 supercharging, shows to the 2nd grade of form pressure of pressure transmitter locked mode 7.5-2=1.Solving a supercharging, pressurizing cylinder accumulation amount of leakage causes low on fuel, need to go to manual mode from auto state and enter Row repairing, it is ensured that auto-programming is normally carried out.

A kind of large-scale, super-large size plastic injection moulding equipment, this equipment mainly has: give molding machine, storage cylinder, allotter and note Penetrate cylinder system: give molding machine group 8.1 and shunting disk 8.5, give molding machine head 8.4, safety dumping device 8.2, escaper copper pressure head 8.3, Little manifold 8.6 is connected, allotter hydraulic cylinder 8.17, allotter push rod 8.18, allotter snap ring 8.7, allotter mandrel 8.8, Allotter 8.9, with injection ram snap ring 8.10 and injection ram 8.11, injecting piston rod 8.12, injection cylinder 8.13, injection guides Plate 8.14, hydraulic injection cylinder 8.15 is connected, and with storage hydraulic cylinder 8.16, stores guide plate 8.19, storage cylinder 8.20, and storage is lived Stopper rod 8.21, stores piston 8.22, and storage piston snap ring 8.23 is connected.

Injection cylinder 8.13 and the rectilinear movement heat seal of injection ram 8.11 are real by multiple tracks injection ram snap ring 8.10 Existing, injection ram snap ring is alloy material, still has piston snap ring tension, can tolerate 100Mpa pressure when 400 DEG C, without Occurring at all to reveal, injection cylinder afterbody does not have flue dust and occurs.Storage cylinder 8.20 is close with the rectilinear movement heat of storage piston 8.22 Envelope is realized by multiple tracks injection ram snap ring 8.10, and storage piston snap ring is alloy material, still has piston card when 400 DEG C Ring tension, can tolerate 50Mpa pressure, and without occurring at all to reveal, storage cylinder afterbody does not have flue dust and occurs.Allotter 8.9 Being realized by multiple tracks allotter snap ring 8.7 with the rectilinear movement heat seal of allotter mandrel 8.8, distributor piston snap ring is Alloy material, still has piston snap ring tension, can tolerate 100Mpa pressure, will not reveal when 400 DEG C.

The invention has the beneficial effects as follows: improve large-scale, super-large size plastic injection moulding automatic process programmed level, improve Large-scale, super-large size plastic injection moulding equipment application level.

1. after the 18th step, when due to technical process take goods overlong time or screw rod gives and moulds excessive velocities, work as storage When piston rod backs to sensor 3.30=1, screw rod motor 1.3 stops, to the 12nd step, when storage cylinder advances, during to 3.4=1, Screw rod motor 1.3 obtains starting order, and screw rod runs well again, this ensures that theres present invention process auto-programming and has and can wrap Capacitive, it is ensured that auto-programming is normally carried out.

2. mode locker locked mode is 2 grades of forms, and the 1st grade is system main oil pressure, and the 2nd grade is the pressure after charger boost；2 Level supercharging form solves due to supercharging of pressurized cylinder, and pressurized cylinder accumulation amount of leakage causes the high-pressure section oil mass of pressurized cylinder not Foot, need to go to manual mode from auto state and carry out repairing, have impact on the problem that auto-programming is normally carried out；Present invention process is certainly Dynamic program has can pardon, it is ensured that auto-programming is normally carried out.

3. injection cylinder and injection ram, storage cylinder and storage piston, allotter is close with the rectilinear movement heat of allotter mandrel Envelope is realized by multiple tracks piston snap ring, and injection ram snap ring is alloy material, still has snap ring tension, be resistant to when 400 DEG C By 50-100Mpa pressure, without occurring material to reveal, do not have smog and produce.

Accompanying drawing explanation

Fig. 1 is that the present invention is large-scale, super-large size plastic injection moulding process schematic diagram left hand view；

Fig. 2 is that the present invention is large-scale, super-large size plastic injection moulding process schematic diagram right part of flg；

Fig. 3 is that the present invention is large-scale, super-large size plastic injection moulding gives molding machine, storage cylinder, allotter and injection cylinder system installation diagram；

Fig. 4 is the partial enlarged drawing of Fig. 3.

Accompanying drawing 1, the line segment annexation of accompanying drawing 2:

Accompanying drawing 1	Accompanying drawing 2
		0.11	0.12
0.21	0.22
		0.31	0.32
0.41	0.42
		0.51	0.52
0.61	0.62
		0.71	0.72
0.81	0.82

In accompanying drawing 1, accompanying drawing 2:

One, motor

Figure number	Function
		1.1	Main pump motor
1.2	Oil strain and cooling motor
		1.3	Give molding machine motor
1.4	Take vehicle motor alive
		1.5	Mould vehicle drives motor

Two, hydraulic pump

Figure number
		2.1	Main pump
2.2	Oil strain and cooling pump

Three, sensor

Figure number	Function
		3.1	(away from injection terminal 40 ~ 100) is begun in pressurize
3.2	Doses system
		3.3	(sequentially 7.2,7.6,7.3) are begun in accumulation of energy
3.4	Storage cylinder anteposition, automatic position screw rod starts order
		3.5	Position after storage cylinder, R3 reports to the police, screw rod stops
3.30	Screw rod off-position, time automatic, program remains to continuously
		3.6	Allotter closes
3.7	Allotter leaves
		3.8	Press is upper
3.9	Press rate conversion
		3.10	Anti-sialorrhea amount
3.11	Position after injection cylinder, R2 reports to the police, screw rod stops
		3.12	Take Herba Plantaginis system alive
3.13	Injection conversion system
		3.14	Take position after car alive, take car alive and stop
3.15	Take car alive and retreat system
		3.16	Take Herba Plantaginis position alive, take car alive and stop
3.17	Brake is opened
		3. 18	Tooth plate is opened
3.19	Tooth plate closes
		3.20	Quiet mould loose core after position
3.21	Eject rear position.
		3.22	Eject anteposition.
3.23	Quiet mould is loosed core anteposition

Four, hydraulic cylinder, hot cylinder, pressurized cylinder

Figure number
		4.1	Hydraulic injection cylinder
4.2	Storage hydraulic cylinder
		4.3	Allotter hydraulic cylinder
4.4	Pressurizing cylinder
		4.5	Inject hot cylinder
4.6	Store hot cylinder
		4.7	Stopper hydraulic cylinder
4.8	Stopper hydraulic cylinder
		4.9	Eject hydraulic cylinder
4.10	Eject hydraulic cylinder
		4.11	Press hydraulic cylinder
4.12	Plural serial stage hydraulic cylinder

Five, accumulator

Figure number
		5.1	Injection accumulator 1 group
5.2	Injection accumulator 2 groups
		5.3	Press rises accumulator soon

Six, electromagnetic valve

Figure number
		6.1	System principal pressure
6.2	Dwell pressure
		6.3	1 group of accumulation of energy of accumulator.
6.4	Accumulator 1 group is drained the oil.
		6.5	Injection.
6.6	Give up the throne after injection cylinder.
		6.7	Storage cylinder advances.
6.8	Storage cylinder retreats, and maintenance is used.
		6.9	Allotter closes.
6.10	Allotter leaves.
		6.11	Mode locker locked mode 2.
6.12	Mode locker tooth plate closes.
		6.13	Press rises.
6.14	Press declines.
		6.15	Press accumulator accumulation of energy.
6.16	Press accumulator is drained the oil, and rises soon.
		6.17	Press rapid decrease.
6.18	Storage cylinder anteposition self-locking.
		6.19	Injection cylinder is quickly drained the oil.
6.20	The quick repairing of injection cylinder.
		6.21	Press off-load.
6.22	Accumulator 2 groups is drained the oil.
		6.23	Brake is pinned.
6.24	Pay back pressure table 7.9 to protect.
		6.25	Main back pressure table 7.10 is protected.
6.26	Quiet mould loose core into.
		6.27	Quiet mould is loosed core back.
6.30	Liftout tank enters.
		6.31	Liftout tank moves back.
6.32	Mode locker tooth plate leaves.
		6.33	Mode locker locked mode 1.
6.34	2 groups of accumulation of energys of accumulator.
		6.39	Loose core pressure.
6.36	Mode locker off-load.

Seven, pressure transmitter pressure shows

Figure number
		7.1	Principal pressure shows
7.2	1 group of pressure of accumulator shows
		7.3	Press accumulator 3 pressure shows
7.4	Press pressure shows
		7.5.1	Locked mode 1 stage pressure shows (principal pressure)
7.5.2	Locked mode 2 stage pressure shows (boost pressure)
		7.6	2 groups of pressure of accumulator show
7.9	Storage cylinder back-pressure shows
		7.10	Injection cylinder back-pressure shows

In accompanying drawing 3:

Figure number
		8.1	Give molding machine group
8.2	Safety dumping device
		8.12	Injecting piston rod
8.13	Injection cylinder
		8.14	Injection guide plate
8.15	Hydraulic injection cylinder
		8.16	Storage hydraulic cylinder
8.17	Allotter hydraulic cylinder
		8.18	Allotter push rod
8.19	Storage guide plate
		8.20	Storage cylinder
8.21	Storage piston rod

In accompanying drawing 4:

Figure number
		8.3	Escaper copper pressure head
8.4	Give molding machine head
		8.5	Shunting disk
8.6	Little manifold
		8.7	Allotter snap ring
8.8	Allotter mandrel
		8.9	Allotter
8.10	Injection ram snap ring
		8.11	Injection ram
8.22	Storage piston
		8.23	Storage piston snap ring

Detailed description of the invention

Below in conjunction with the accompanying drawings embodiments of the invention are described in further detail:

Fig. 1 is that the present invention is large-scale, super-large size plastic injection moulding process schematic diagram；Fig. 2 is that the present invention is large-scale, super-large size plastic note Penetrate molding and give molding machine, storage cylinder, allotter and injection cylinder system installation diagram；Fig. 3 is the partial enlarged drawing of Fig. 2.

The present invention is large-scale as shown in Figure 1, super-large size plastic injection moulding process process:

1. present invention process feature explanation:

5th step, 6.33,6.1 must be electric, and the 1st grade of form of mode locker locked mode, system oil pressure is main system pressure, to pressure transmitter Pressure display 7.5-1=1；6th step, 6.11,6.1 must be electric, and the 2nd grade of form of mode locker locked mode, system oil pressure is charger boost After pressure is main system pressure 1.5625 times, (12.5²/10²=1.5625), 7.5-2=1 is shown to pressure transmitter pressure, Single mode locker locked mode ability is 3000kN-6000kN.

18th step, 6.18,6.9,6.1 electric, allotter closes, and to 3.6=1, ten nine step is presented herein below to the 31st step, again Opening to the 11st step, allotter from the first step, to 3.7=1, during this, screw rod motor 1.3 is all the time in operating, and storage piston rod is even Continuous retreat, as technical process take goods overlong time or screw rod gives and moulds excessive velocities, when storage piston rod backs to sensor During 3.30=1, screw rod motor 1.3 stops, auto-programming to the 12nd step, and storage cylinder advances, during to 3.4=1, and screw rod motor 1.3 Obtaining starting order, screw rod runs well again, and this ensures that thering that auto-programming of the present invention has can pardon, it is ensured that from traverse Sequence is normally carried out.

2. process constraints:

1) only have 3.17=1 time, 6.13,6.14,6.16,6.17 could obtain electric；

2) only have 3.18=1 time, 6.13,6.14,6.16,6.17 could obtain electric；

3) only have 3.20=1 time, 6.13,6.14,6.16,6.17 could obtain electric；

4) only have 3. 21=1 time, 6.13,6.14,6.16,6.17 could obtain electric；

5), when only having 3.19=1,6.116.33 could obtain electric；

6) only have 3.7=1 time, 6.7,6.24 could obtain electric.

7) cold screw rod protection: 1. TX3 is to after the setting time, and screw rod could start；2. screw rod motor 1.3 converter is adjusted Overcurrent protection value, when electric current is excessive, converter self-insurance.

3. the automatic process time relay:

Dwell time: TX1,0 → 99 second.

Interval time: TX2,0 → 99 second.

Cold screw rod guard time: TX3,0 → 99 minute.

4. report to the police and jerk

R1: overpressure alarm, motor 1.1 emergent stopping, pressure transmitter 7.1=1.

R2: position after injection cylinder, motor 1.3 stops, pressure transmitter 7.11=1.

R3: position after storage cylinder, motor 1.3 stops, pressure transmitter 7.5=1.

Alarm form: sound and light alarm, disappears by after alarm release.

5. other explanations

Heating system is instrument control, unrelated with auto-programming.

Screw rod motor 1.3 with manual, semi-automatic, auto state is unrelated.

6. take goods vehicle motor 1.4, set up hand push button, control " advance " " retrogressing ".

Independent " mould vehicle " Electric Appliance Cabinet: mould vehicle motor 1.5, button: enter, stop, move back.Hot flow path: 5 temperature control instruments, Heater wire wiring.

If Fig. 2 is that the present invention is large-scale, super-large size plastic injection moulding gives molding machine, storage cylinder, allotter and injection cylinder system Installation diagram, Fig. 3 is the partial enlarged drawing of Fig. 2.

The present invention is large-scale, super-large size plastic injection moulding equipment mainly includes: give molding machine, storage cylinder, allotter and note Penetrate cylinder system: give molding machine group 8.1 and shunting disk 8.5, give molding machine head 8.4, safety dumping device 8.2, escaper copper pressure head 8.3, Little manifold 8.6 is connected, allotter hydraulic cylinder 8.17, allotter push rod 8.18, allotter snap ring 8.7, allotter mandrel 8.8, Allotter 8.9, with injection ram snap ring 8.10 and injection ram 8.11, injecting piston rod 8.12, injection cylinder 8.13, injection guides Plate 8.14, hydraulic injection cylinder 8.15 is connected, and with storage hydraulic cylinder 8.16, stores guide plate 8.19, storage cylinder 8.20, and storage is lived Stopper rod 8.21, stores piston 8.22, and storage piston snap ring 8.23 is connected.

Injection cylinder 8.13 and the rectilinear movement heat seal of injection ram 8.11 are real by multiple tracks injection ram snap ring 8.10 Existing, injection ram snap ring is alloy material, still has piston snap ring tension, can tolerate 100Mpa pressure when 400 DEG C, without Occurring at all to reveal, injection cylinder afterbody does not have flue dust and occurs.

Storage cylinder 8.20 and the rectilinear movement heat seal of storage piston 8.22 are real by multiple tracks injection ram snap ring 8.10 Existing, storage piston snap ring is alloy material, still has piston snap ring tension, can tolerate 50Mpa pressure when 400 DEG C, without Occurring at all to reveal, storage cylinder afterbody does not have flue dust and occurs.

Allotter 8.9 is to be realized by multiple tracks allotter snap ring 8.7 with the rectilinear movement heat seal of allotter mandrel 8.8 , distributor piston snap ring is alloy material, still has piston snap ring tension, can tolerate 100Mpa pressure, Bu Huifa when 400 DEG C Raw leakage.

Claims

1. large-scale a, super-large size plastic injection moulding process, it is characterised in that: described technique is carried out as follows: the tenth Eight steps, electromagnetic valve (6.18), (6.9), (6.1) obtain electric, close sensor (3.6=1) to allotter, from the 19th step to the 30th One step, again from the first step to the 11st step, drives sensor (3.7=1) to allotter, and during this, screw rod motor (1.3) exists all the time Operating, storage piston rod (8.21) and storage guide plate (8.19) retreat continuously, when storage guide plate (8.19) backs to screw rod During off-position sensor (3.30=1), give molding machine motor (1.3) and stop, to the 12nd step, storage guide plate (8.19), storage piston Bar (8.21), storage piston (8.22) advance, and to storage cylinder during level sensor (3.4=1), give molding machine motor (1.3) and are opened Dynamic order, gives molding machine screw rod and runs well again.

2. one kind according to large-scale, the super-large size plastic injection moulding process described in claim 1, it is characterised in that: described work Skill is carried out as follows: the 5th step, and electromagnetic valve (6.33), (6.1) obtain electric, and the 1st grade of form of locked mode, system oil pressure is main system Pressure, shows (7.5-1=1) to the 1st grade of form pressure of pressure transmitter locked mode；6th step, electromagnetic valve (6.11), (6.1) obtain Electricity, the 2nd grade of form of locked mode, system oil pressure is pressure after pressurizing cylinder 4.4 supercharging, to the 2nd grade of form pressure of pressure transmitter locked mode Power shows (7.5-2=1).

3. according to large-scale, the super-large size plastic injection moulding equipment described in claim 1, this equipment mainly has: distribution Device (8.9) is connected with injection cylinder (8.13), injection ram (8.11) with allotter mandrel (8.8), with storage cylinder (8.20) with Storage piston (8.22) is connected, it is characterised in that: injection cylinder (8.13) and the rectilinear movement hot high pressure of injection ram (8.11) Sealing is realized by multiple tracks injection ram snap ring (8.10)；Storage cylinder (8.20) and the rectilinear movement storing piston (8.22) Hot high pressure is sealed and is realized by multiple tracks storage piston snap ring (8.23)；Allotter (8.9) is straight with allotter mandrel (8.8) Line mobile high-voltage heat seal is realized by multiple tracks allotter snap ring (8.7).