CN206254451U - A kind of quick response servo-control system of injection moulding machine - Google Patents
A kind of quick response servo-control system of injection moulding machine Download PDFInfo
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- CN206254451U CN206254451U CN201621381966.5U CN201621381966U CN206254451U CN 206254451 U CN206254451 U CN 206254451U CN 201621381966 U CN201621381966 U CN 201621381966U CN 206254451 U CN206254451 U CN 206254451U
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- injection
- hydraulic pump
- oil
- fuel tank
- cylinder
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Abstract
The utility model discloses a kind of quick response servo-control system of injection moulding machine, including：Fuel tank (1), hydraulic pump (4), servomotor (3), oil return solenoid valve (5), servo electromagnetic valve (6).The system that the utility model is provided is by before injection, the hydraulic oil that hydraulic pump is pumped out is directed back in fuel tank using oil return solenoid valve, enable to control the servomotor of hydraulic pump to reach maximum (top) speed before injection, the slow problem of response speed caused by overcoming servomotor and needing the time due to rotating speed lifting, so when injection is started, the Serve Motor Control hydraulic pump of working at high speed, by the hydraulic oil in fuel tank, through servo electromagnetic valve, in pumping into injection cylinder, carry out injection work, substantially increase the injection response speed of the system, meet the injection requirement of thin-wall product.The mono- ﹑ control accuracies Gao ﹑ debugging of system architecture Jin Cou ﹑ oil circuits Jian is easy, with excellent dynamic stability, and keeps the high accuracy energy conservation characteristic of servomotor.
Description
Technical field
The utility model is related to be molded control technology field, the quick response servo control of more particularly to a kind of injection moulding machine
System processed.
Background technology
In recent years, with the 3C Product update speed such as notebook computer, mobile phone and personal digital assistant
Accelerate, promote the design concept of product just to develop towards " light, thin, short, small " direction.Because thin-wall product has the feed consumption Shao ﹑ cycles
Fast the advantages of, so people are increasing to the demand of thin-wall product, Thin-Wall Injection Molding Technology is promoted to be developed rapidly.But
Because Thin-Wall Injection Molding Technology is fast except requiring injection moulding speed, also require that the injection acceleration at injection initial stage is fast, that is, require injection
Initial stage injection response is fast, but the injection machine of routine is difficult to meet thin-wall product, at the injection initial stage to injection quick response
It is required that.
Utility model content
In order to solve problem of the prior art, the utility model embodiment provides a kind of quick response of injection moulding machine
Servo-control system.The technical scheme is as follows：
The utility model embodiment provides a kind of quick response servo-control system of injection moulding machine, described to be molded into
Type machine includes：Injection cylinder, the injection cylinder includes：Cylinder barrel, the cylinder cap and cylinder bottom that are arranged on cylinder barrel two ends, it is arranged on cylinder barrel
In piston and one end be connected with piston and the other end stretches out the piston rod of cylinder cap, cylinder barrel, piston, cylinder cap are constituted in first
Chamber, cylinder barrel, piston, cylinder bottom constitute second inner chamber；
The system includes：
For store the fuel tank of hydraulic oil, hydraulic pump, the servomotor for controlling hydraulic pump works, oil return solenoid valve,
And servo electromagnetic valve,
Hydraulic pump is connected with fuel tank and injection cylinder respectively, and servomotor is connected with hydraulic pump, oil return solenoid valve respectively with
Fuel tank is connected with the oil-out of hydraulic pump,
The servo electromagnetic valve includes：Second be connected with first actuator port and second inner chamber of first inner chamber connection
The oil inlet of the oil-out connection of actuator port and hydraulic pump and the oil-out being connected with fuel tank.
In the quick response servo-control system of the above-mentioned injection moulding machine of the utility model embodiment, the servo electricity
Magnet valve is two-position four-way solenoid valve, or three position four-way electromagnetic valve.
In the quick response servo-control system of the above-mentioned injection moulding machine of the utility model embodiment, the oil return electricity
Magnet valve is two-position two-way solenoid valve.
In the quick response servo-control system of the above-mentioned injection moulding machine of the utility model embodiment, the hydraulic pump
It is unidirectional quantitative hydraulic pump.
In the quick response servo-control system of the above-mentioned injection moulding machine of the utility model embodiment, also include：Even
It is connected on the filter between hydraulic pump and fuel tank.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
By before injection, the hydraulic oil that hydraulic pump is pumped out being directed back in fuel tank using oil return solenoid valve so that control
The servomotor of hydraulic pump processed can reach maximum (top) speed before injection, overcome servomotor because rotating speed lifting needs the time
The slow problem of caused response speed, so when injection is proceeded by, the Serve Motor Control hydraulic pump of working at high speed, by oil
Hydraulic oil in case, through servo electromagnetic valve, pumps into injection cylinder, carries out injection work, substantially increases the injection of the system
Response speed, meets the injection requirement of thin-wall product.Additionally, the system has excellent dynamic stability and response quickly
Property, the mono- ﹑ control accuracies Gao ﹑ debugging of its Jie structure Jin Cou ﹑ oil circuit Jian is easy, and closed-loop control can be carried out to injection moulding speed, makes
The injection moulding speed booster response time reaches the booster response time of servo electromagnetic valve, and keeps the high accuracy energy-conservation of servomotor
Characteristic.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of injection cylinder that the utility model embodiment one is provided；
Fig. 2 is a kind of knot of the quick response servo-control system of injection moulding machine that the utility model embodiment one is provided
Structure schematic diagram.
Specific embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type implementation method is described in further detail.
Before the present embodiment is introduced, first with reference to Fig. 1, it is discussed in detail, the quick response servo of the injection moulding machine
The structure of injection cylinder in the injection moulding machine that control system is controlled.Referring to Fig. 1, the injection cylinder includes：Cylinder barrel 701, set
Put cylinder barrel two ends cylinder cap 702 and cylinder bottom 703, be arranged on cylinder barrel 701 in piston 704 and one end be connected with piston 704
And the other end stretches out the piston rod 705 of cylinder cap 702, cylinder barrel 701, piston 704, cylinder cap 702 constitute first inner chamber 71, cylinder barrel 701,
Piston 704, cylinder bottom 703 constitute second inner chamber 72.When injection cylinder 7 is started working, can be to injecting hydraulic pressure in second inner chamber 72
Oil, while the hydraulic oil in first inner chamber 71 is derived, such piston 704 in the second inner chamber 72 under the promotion of hydraulic oil, to
The direction of cylinder cap 702 is moved, while drive the piston rod 705 being connected on piston 704 to stretch out cylinder cap 702, to complete injection action；
After the completion of injection, while the hydraulic oil in second inner chamber 72 is derived, can so be lived to hydraulic oil is injected in first inner chamber 71
Plug 704 under the promotion of hydraulic oil, move in the first inner chamber 71 to the direction of cylinder bottom 703, while drive piston rod 705 is to cylinder barrel
Indentation in 701, to complete the reset of injection cylinder.
Embodiment one
The utility model embodiment provides a kind of quick response servo-control system of injection moulding machine, is particularly suited for
Preparation to thin-wall product, referring to Fig. 2, the system can include：
Fuel tank 1, hydraulic pump 4, servomotor 3, oil return electromagnetism for controlling hydraulic pump 4 to work for storing hydraulic oil
Valve 5 and servo electromagnetic valve 6, hydraulic pump 4 are connected with fuel tank 1 and injection cylinder 7 respectively, and servomotor 3 is connected with hydraulic pump 4,
Oil-out of the oil return solenoid valve 5 respectively with fuel tank 1 and hydraulic pump 4 is connected, and servo electromagnetic valve 6 includes：Connected with first inner chamber 71
The first actuator port 61 and second inner chamber 72 connection the second actuator port 62 and hydraulic pump 4 oil-out connection oil-feed
Mouth 63 and the oil-out 64 being connected with fuel tank 1.
It should be noted that the injection moulding of thin-wall product has requirement higher with the injection moulding of conventional products, it is main
If it is required that in injection start time, injection moulding machine has larger injection acceleration, so that injection moulding speed is rapidly achieved note
Modeling requires, that is, requires to be molded fast response time.In order to meet above-mentioned requirements, in the present embodiment, before injection starts, it is switched on
Servomotor 3, meanwhile, in the presence of oil return solenoid valve 5, the hydraulic oil that hydraulic pump 4 is pumped out can be directed back in fuel tank 1, caused
Make servomotor 3 that maximum (top) speed is can reach before injection starts, so when injection is started, can effectively overcome due to servo electricity
The lifting of the rotating speed of machine 3 needs the time, starts the problem of low-response, improves the injection acceleration at injection initial stage.Specifically, when injection is opened
During the beginning, oil return solenoid valve 5 and servo electromagnetic valve 6 quick response simultaneously, oil return solenoid valve 5 stop the part for pumping out hydraulic pump 4
Hydraulic oil is directed back to fuel tank 1, and imported into second inner chamber 72 hydraulic oil that hydraulic pump 4 is pumped out (i.e. just by servo electromagnetic valve 6
The actuator port 62 of oil inlet 63 and second is turned on), and be simultaneously directed back to the hydraulic oil in first inner chamber 71 (will in fuel tank 1
First actuator port 61 is turned on oil-out 64), when having ensured that injection starts, the The hydraulic oil in second inner chamber 72 is passed through, make
Obtaining injection cylinder 7 has larger injection acceleration.
Additionally, servo electromagnetic valve 6 is additionally operable to, when injection cylinder 7 resets, the hydraulic oil that hydraulic pump 4 is pumped out be imported into
In one inner chamber 71 (will the actuator port 61 of oil inlet 63 and first turn on), and the hydraulic oil in second inner chamber 72 be led back to simultaneously
To in fuel tank 1 (will the second actuator port 62 turned on oil-out 64).It should be noted that the reset of injection cylinder 7 can be with
Oil return work with oil return solenoid valve 5 is carried out simultaneously, and the hydraulic oil that such hydraulic pump 4 is pumped out will be divided into two parts, a part of liquid
Force feed will be imported into first inner chamber 71 by servo electromagnetic valve 6, be resetted for injection cylinder 7, and another part hydraulic oil then passes through
Oil return solenoid valve 5 is back in fuel tank 1.It is of course also possible to above-mentioned two process is separately carried out, it is not limited here.
Alternatively, servo electromagnetic valve 6 can be two-position four-way solenoid valve, or three position four-way electromagnetic valve.
In the present embodiment, when servo electromagnetic valve 6 is two-position four-way solenoid valve, it mainly has two kinds of mode of operations, its
One be for be molded start when, oil inlet 63 is turned on the second actuator port 62, at the same by the first actuator port 61 with go out
Hydraulic fluid port 64 is turned on；The second is be used to, when injection cylinder 7 resets, oil inlet 63 be turned on the first actuator port 61, while will
Second actuator port 62 is turned on oil-out 64.Now, injection cylinder 7 resets can work same with the oil return of oil return solenoid valve 5
Shi Jinhang.When servo electromagnetic valve 6 is three position four-way electromagnetic valve, remove outside above two mode of operation, be also in the 3rd
Kind of mode of operation, under this mode of operation, four mouths of servo electromagnetic valve 6 (i.e. the first actuator port 61, the second actuator port
62nd, oil inlet 63 and oil-out 64) it is not turned on each other.This mode of operation, can be with the oil return of oil return solenoid valve 5
Work is used in combination.
Alternatively, oil return solenoid valve 5 can be two-position two-way solenoid valve.Now, oil return solenoid valve 5 has two kinds of Working moulds
Formula, one is two working holes (not indicated in accompanying drawing) of itself are turned on, the second is between disconnecting itself two working hole
Connection.
Alternatively, hydraulic pump 4 can be unidirectional quantitative hydraulic pump, so be easy to control the flow direction and flow of hydraulic oil, have
Beneficial to precise control injection moulding speed.
Alternatively, referring to Fig. 2, the system can also include：The filter 2 between hydraulic pump 4 and fuel tank 1 is connected to, is used
Impurity in hydraulic oil is filtered out.
Below in conjunction with the accompanying drawings, the quick response servo-control system of the injection moulding machine, control injection are briefly introduced
The injection moulding process of shaping.
Before injection starts, servomotor 3 first opens rotation, meanwhile, the conducting fuel tank 1 of oil return solenoid valve 5 and hydraulic pump 4
Oil-out so that the hydraulic oil that hydraulic pump 4 is pumped out is directed back in fuel tank 1, in the process, the rotating speed of servomotor 3 is in injection
Maximum is can reach before starting, the response speed of servomotor 3 can be effectively improved.
When beginning is molded, oil return solenoid valve 5 stops the oil-out of conducting fuel tank 1 and hydraulic pump 4, meanwhile, servo electromagnetism
The hydraulic fluid port 63 of valve 6 is turned on the second actuator port 62, and the first actuator port 61 and oil-out 64 are turned on (will the pump of hydraulic pump 4
The hydraulic oil for going out is imported into second inner chamber 72, and the hydraulic oil in first inner chamber 71 is directed back in fuel tank 1), now, always
Servomotor 3 in maximum (top) speed work, controls hydraulic pump 4, and hydraulic oil is pumped out from fuel tank 1 in second inner chamber 72, opens
Beginning quickly carries out injection work.
After the completion of injection, servomotor 3 can also work a period of time to complete the reset of injection cylinder 7, now, watch
Take magnetic valve 6 to turn on oil inlet 63 with the first actuator port 61, while the second actuator port 62 is turned on (i.e. with oil-out 64
The hydraulic oil that hydraulic pump 4 is pumped out is imported into first inner chamber 71, and the hydraulic oil in second inner chamber 72 is directed back to oil simultaneously
In case 1).
The quick response servo-control system of the injection moulding machine that the utility model embodiment is provided, by injection
Before, the hydraulic oil that hydraulic pump is pumped out is directed back in fuel tank using oil return solenoid valve so that the servomotor energy of control hydraulic pump
It is enough that maximum (top) speed is reached before injection, overcome caused by servomotor needs the time due to rotating speed lifting that response speed is slow to ask
Topic, so when injection is proceeded by, the Serve Motor Control hydraulic pump of working at high speed, by the hydraulic oil in fuel tank, through servo
Magnetic valve, pumps into injection cylinder, carries out injection work, substantially increases the injection response speed of the system, meets thin-walled
The injection requirement of product.Additionally, the system has excellent dynamic stability and response quickly of system, the letter of its Jie structure Jin Cou ﹑ oil circuit
Dan ﹑ control accuracy Gao ﹑ debugging is easy, and can carry out closed-loop control to injection moulding speed, makes the injection moulding speed booster response time
The booster response time of servo electromagnetic valve is reached, and keeps the high accuracy energy conservation characteristic of servomotor.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of quick response servo-control system of injection moulding machine, the injection moulding machine includes：Injection cylinder (7), institute
Stating injection cylinder (7) includes：Cylinder barrel (701), the cylinder cap (702) and cylinder bottom (703) that are arranged on cylinder barrel two ends, it is arranged on cylinder barrel
(701) piston (704) and one end in are connected with piston (704) and the other end stretches out the piston rod (705) of cylinder cap (702),
Cylinder barrel (701), piston (704), cylinder cap (702) constitute first inner chamber (71), cylinder barrel (701), piston (704), cylinder bottom (703) structure
Into second inner chamber (72)；
Characterized in that, the system includes：
Fuel tank (1), hydraulic pump (4), servomotor (3), oil return for controlling hydraulic pump (4) to work for storing hydraulic oil
Magnetic valve (5) and servo electromagnetic valve (6),
Hydraulic pump (4) is connected with fuel tank (1) and injection cylinder (7) respectively, and servomotor (3) is connected with hydraulic pump (4), oil return electricity
Oil-out of the magnet valve (5) respectively with fuel tank (1) and hydraulic pump (4) is connected,
The servo electromagnetic valve (6) includes：The first actuator port (61) and second inner chamber (72) connected with first inner chamber (71)
Oil inlet (63) and be connected with fuel tank (1) that second actuator port (62) of connection and the oil-out of hydraulic pump (4) are connected
Oil-out (64).
2. system according to claim 1, it is characterised in that the servo electromagnetic valve (6) is two-position four-way solenoid valve, or
Person's three position four-way electromagnetic valve.
3. system according to claim 1, it is characterised in that the oil return solenoid valve (5) is two-position two-way solenoid valve.
4. system according to claim 1, it is characterised in that the hydraulic pump (4) is unidirectional quantitative hydraulic pump.
5. the system according to claim any one of 1-4, it is characterised in that also include：It is connected to hydraulic pump (4) and fuel tank
(1) filter (2) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381966.5U CN206254451U (en) | 2016-12-15 | 2016-12-15 | A kind of quick response servo-control system of injection moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381966.5U CN206254451U (en) | 2016-12-15 | 2016-12-15 | A kind of quick response servo-control system of injection moulding machine |
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| CN206254451U true CN206254451U (en) | 2017-06-16 |
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| CN201621381966.5U Active CN206254451U (en) | 2016-12-15 | 2016-12-15 | A kind of quick response servo-control system of injection moulding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498813A (en) * | 2017-09-22 | 2017-12-22 | 成都市联余精密机械有限公司 | A kind of injection machine injection hydraulic circuit and its injection control method for realizing high response injection |
-
2016
- 2016-12-15 CN CN201621381966.5U patent/CN206254451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498813A (en) * | 2017-09-22 | 2017-12-22 | 成都市联余精密机械有限公司 | A kind of injection machine injection hydraulic circuit and its injection control method for realizing high response injection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190731 Address after: Room 201, Building A, No. 1 Qianwan Road, Shenzhen Qianhai Road Shenzhen Cooperation Zone, 518000 Guangdong Province (Admitted to Shenzhen Qianhai Business Secretary Co., Ltd.) Patentee after: Shenzhen Zhongke Shengda Interconnection Intelligent Technology Co., Ltd. Address before: 518112 No. 6, Bantian Avenue, Bantian street, Longgang District, Guangdong, Shenzhen Co-patentee before: SHENZHEN FUDA INTELLIGENT SYSTEMS CO., LTD. Patentee before: Kunda Mold (Shenzhen) Co., Ltd. |
|
| TR01 | Transfer of patent right |