CN201192890Y - Regulating mechanism for setting melt adhesive back pressure of plastic rubber ejection shaping apparatus - Google Patents
Regulating mechanism for setting melt adhesive back pressure of plastic rubber ejection shaping apparatus Download PDFInfo
- Publication number
- CN201192890Y CN201192890Y CNU2008200841859U CN200820084185U CN201192890Y CN 201192890 Y CN201192890 Y CN 201192890Y CN U2008200841859 U CNU2008200841859 U CN U2008200841859U CN 200820084185 U CN200820084185 U CN 200820084185U CN 201192890 Y CN201192890 Y CN 201192890Y
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- valve
- back pressure
- overflow valve
- port
- overflow
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Abstract
The utility model discloses an adjusting mechanism for setting melting back pressure of a plastic injection molding machine. The adjusting mechanism includes a hydraulic oil pump arranged on the plastic injection molding machine for serving as at least the power source of an injection section, a proportional valve connected with the output port of the hydraulic oil pump for at least proportionally controlling the oil output pressure of the hydraulic oil pump, a reversing valve is communicated with a pressure output port built in the proportional valve, and an overflow valve also arranged on the plastic injection molding machine for controlling the back pressure for melting of the injection section, wherein a remote control port of the overflow valve is communicated with the input port of the reversing valve. By adopting the common overflow valve as the back pressure adjusting valve of the melt adhesive, the adjusting mechanism has the advantages of higher performance-to-price ratio and reduced manufacture cost of the entire machine. The remote control port of the overflow valve is utilized comprehensively, and the proportional control of the overflow valve can be achieved by the proportional pilot control of the oil path of the remote control port, thereby ensuring the accuracy and the stability of the screw back pressure when melting. The common reversing valve arranged between the proportional valve and the overflow valve can achieve proportional adjustment of the melting back pressure.
Description
Technical field
The utility model relates to the technical field of injection machine in the plastics machinery, particularly the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus.
Background technology
At present the smelting glue back pressure set of plastic rubber ejection shaping apparatus commonly used comparatively in the society generally can be divided into manual pressure regulating valve, or adopt the ratio pressure valve regulation, manual pressure regulating valve low price but pressure regulation low precision, in the time of can not guaranteeing melten gel back pressure accurately and stability; Proportional pressure valve then can be regulated controlled pressure in proportion by the input voltage height, the accuracy of screw back pressure and stability in the time of can guaranteeing melten gel, but the higher meeting of this type of proportioning valve price improves machine cost.
Summary of the invention
Technical problem to be solved in the utility model is the present situation at prior art, the governor motion of the smelting glue back pressure set of plastic rubber ejection shaping apparatus of provide that a kind of cost is low, simple and direct, the complete machine utilization rate height of design and smelting glue back pressure control are precise and stable.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus, comprise that be equipped with on the plastic rubber ejection shaping apparatus at least can be as the hydraulic oil pump that penetrates partial power source, the delivery outlet of this hydraulic oil pump is connected with at least the proportioning valve that can the proportion control hydraulic oil pump goes out oil pressure, is communicated with reversal valve on the built-in pressure output of proportioning valve; Also be equipped with on the plastic rubber ejection shaping apparatus to control and penetrate the overflow valve that part goes up smelting glue back pressure, and the remote control mouth that this overflow valve is shaped on is connected with the input port of reversal valve.
The measure of taking also comprises:
Above-mentioned reversal valve is a two position three-way valve, and the 4th valve port of this reversal valve is connected with the remote control mouth, and first valve port of above-mentioned reversal valve is connected with pressure output.
Above-mentioned proportioning valve is furnished with system's overflow valve of control system oil return, above-mentioned proportioning valve also is furnished with the proportional control valve of energy control system overflow valve ratio work, and the 3rd remote control mouth of the oil-in of this proportional control valve and system's overflow valve all inserts on pressure output; And above-mentioned proportioning valve is built-in with the leakage hole that can be connected with the proportional control valve oil-out.
Second valve port of above-mentioned reversal valve inserts on leakage hole, and the 3rd valve port of reversal valve is connected with the second remote control mouth of proportional control valve.
When the electromagnet of above-mentioned reversal valve cut off the power supply, first valve port of this reversal valve communicated with the 3rd valve port, and correspondingly, the 4th valve port of reversal valve communicates with second valve port.
When the electromagnet of above-mentioned reversal valve was switched on, first valve port of this reversal valve communicated with the 4th valve port, and correspondingly, second valve port of reversal valve disconnects mutually with the 3rd valve port.
A kind of scheme of above-mentioned overflow valve configuration, overflow valve is the straight moving subbase mounted overflow valve of band manual adjustments handle; And be connected with on the oil-in place pipeline of this overflow valve and can show that this overflow valve controls the Pressure gauge of back pressure value.
The another kind of scheme of above-mentioned overflow valve configuration, the overflow valve that overflow valve is installed for the straight moving tubular type of band manual adjustments handle; And the oil-in place pipeline of this overflow valve is connected with and can shows that this overflow valve controls the Pressure gauge of back pressure value.
Above-mentioned proportioning valve also is furnished with the proportional flow control valve of the fuel-displaced flow of proportion control hydraulic oil pump.
Compared with prior art, the utility model comprises that be equipped with on the plastic rubber ejection shaping apparatus at least can be as the hydraulic oil pump that penetrates partial power source, the delivery outlet of this hydraulic oil pump is connected with at least the proportioning valve that can the proportion control hydraulic oil pump goes out oil pressure, is communicated with reversal valve on the built-in pressure output of proportioning valve; Also be equipped with on the plastic rubber ejection shaping apparatus to control and penetrate the overflow valve that part goes up smelting glue back pressure, and the remote control mouth that this overflow valve is shaped on is connected with the input port of reversal valve.Advantage of the present utility model is: adopt the back pressure regulating valve of comparatively common common overflow valve as melten gel, the cost performance of configuration is higher, and has reduced the manufacturing cost of complete machine; Fully utilized the remote control mouth of this overflow valve, the proportion pilot control of the oil circuit by this remote control mouth has realized the proportion control of this overflow valve, and mentality of designing is simple and direct, rate of comprehensive utilization of equipment height, and the accuracy and the stability of screw back pressure when having guaranteed melten gel; Between than valve valve and overflow valve common reversal valve is set, the ratio of screw back pressure is regulated when having guaranteed melten gel.
Description of drawings
Fig. 1 is that the injection part of controlling of the utility model embodiment divides the hydraulic principle schematic diagram that moves;
Fig. 2 is the longitudinal profile schematic diagram that penetrates part among the utility model embodiment;
Fig. 3 is the schematic top plan view of Fig. 2.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment as shown in Figure 1 to Figure 3, figure grade explanation: hydraulic oil pump 1, motor 11, seat stand reversal valve 12, rollback reversal valve 13, dual reversal valve 14, proportioning valve 2, pressure output 2a, leakage hole 2b, system's overflow valve 21, proportional control valve 22, proportional flow control valve 23, reversal valve 3, overflow valve 4, remote control mouth 4a, Pressure gauge 41, melten gel motor 51, penetrate oil cylinder 52, screw cylinder 53, seat stand oil cylinder 54.
The utility model embodiment, the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus, comprise that be equipped with on the plastic rubber ejection shaping apparatus at least can be as the hydraulic oil pump 1 that penetrates partial power source, the delivery outlet of hydraulic oil pump 1 is connected with at least the proportioning valve 2 that can proportion control hydraulic oil pump 1 goes out oil pressure, is communicated with reversal valve 3 on the built-in pressure output 2a of this proportioning valve 2; Also be equipped with on the plastic rubber ejection shaping apparatus to control and penetrate the overflow valve 4 that part goes up smelting glue back pressure, and the remote control mouth 4a that this overflow valve 4 is shaped on is connected with the input port of reversal valve 3.
Present embodiment is achieved in that the injection part branch of general plastic rubber ejection shaping apparatus comprises the melten gel motor 51 that can control melten gel, the ejaculation oil cylinder 52 that the control melten gel penetrates, can store the screw cylinder 53 and the seat stand oil cylinder 54 of melten gel, the rotation of screw cylinder 53 is driven by melten gel motor 51, and the injection and retreat slip by penetrating oil cylinder 52 controls of advancing of screw rod in the screw cylinder 53, when screw cylinder 53 rotates, outside plastics enter continuously and melt in the front end of this screw cylinder 53, for enabling to obtain comparatively fine and close melten gel, just must increase the resistance that screw rod retreats slip, promptly be the back pressure setting that the utility model will relate to, the height that general back pressure is provided with should be according to the requirement of different melten gels.
According to hydraulic principle schematic diagram shown in Figure 1, Hydraulic Elements of the present utility model also comprise the motor 11 that drives hydraulic oil pump 1, the seat stand reversal valve 12 of control seat stand oil cylinder 54, the rollback reversal valve 13 that oil cylinder 52 retreats is penetrated in control, and control is penetrated and the dual reversal valve 14 of melten gel motor 51, the second valve port T of this dual reversal valve 14 links to each other with the oil-in of overflow valve 4, and the rollback oil circuit mouth that penetrates oil cylinder 52 inserts the 3rd valve port A of dual reversal valve 14, in other words, the rollback oil circuit that penetrates oil cylinder 52 inserts in overflow valve 4 through dual reversal valve 14, is controlled by overflow valve 4 so penetrate the rollback back pressure of oil cylinder 52.
For reducing the manufacturing cost of complete machine, general overflow valve more than 4 adopts the common manual overflow valve of board-like or tubular type, but its precision of being controlled of common manual overflow valve often is relatively low, for improving the control accuracy of this overflow valve 4, also can set about from its guide's control remote control mouth 4a, proportioning valve 2 in the present embodiment is two proportioning valves of flow and pressure, reversal valve 3 is a two position three-way valve, and the 4th valve port B of this reversal valve 3 is connected with remote control mouth 4a, and the first valve port P of reversal valve 3 is connected with pressure output 2a; Proportioning valve 2 is furnished with the system's overflow valve 21 of control system oil return and the proportional flow control valve 23 of proportion control output flow, proportioning valve 2 also is furnished with the proportional control valve 22 of energy control system overflow valve 21 ratio work, and the 3rd remote control mouth of the oil-in of proportional control valve 22 and system's overflow valve 21 all inserts on pressure output 2a; And proportioning valve 2 is built-in with the leakage hole 2b that can be connected with proportional control valve 22 oil-outs; The second valve port T of reversal valve 3 inserts on leakage hole 2b, and the 3rd valve port A of reversal valve 3 is connected with the second remote control mouth of proportional control valve 22; When the electromagnet of reversal valve 3 cut off the power supply, the first valve port P of this reversal valve 3 communicated with the 3rd valve port A, and correspondingly, the 4th valve port B of reversal valve 3 communicates with the second valve port T; When the electromagnet of reversal valve 3 was switched on, the first valve port P of this reversal valve 3 communicated with the 4th valve port B, and correspondingly, the second valve port T of reversal valve 3 disconnects mutually with the 3rd valve port A; And be connected with the Pressure gauge 41 that can show this overflow valve 4 back pressure value of controlling on the oil-in place pipeline of this overflow valve 4.
The operation principle of the utility model embodiment is as follows:
Drive hydraulic oil pump 1 hydraulic oil of rotation generation high pressure at a high speed by motor 11, flow and the pressure required by proportioning valve 2 adjustings of system enter each executive component action.
When the dual reversal valve 14 right side electromagnet of reversal valve are gone into electricity, pressure oil makes melten gel motor 51 rotation and drives that screw rod begins melten gel in the screw cylinder 53, and the plastic rubber material of fusing constantly is stored in the screw cylinder 53 front end of material pipe, the piston that promotes to penetrate oil cylinder 52 simultaneously retreats.For improving the quality of plastic cement fusing, need when the piston that penetrates oil cylinder 52 retreats, to increase certain resistance, the back pressure that generally can adopt the manual overflow valve 4 of pilot-operated type to come adjusting screw(rod) to retreat is joined the remote control mouth 4a of overflow valve 4 by the proportioning valve 2 pressure output 2a of reversal valve 3 with system.
When being in do action such as switch mould, holder mould, ejaculation when machine, reversal valve 3 is not gone into electricity, and proportioning valve 2 is used to control the pressure and the flow of whole hydraulic system; When screw rod begins melten gel in the screw cylinder 53, reversal valve 3 is gone into, the pressure output 2a of the proportioning valve 2 of the remote control mouth 4a of overflow valve 4 and system joins at this moment, this moment, the proportioning valve 2 of system was used for the flow of regulating system and the smelting glue back pressure of screw rod, back pressure in the time of can controlling the screw rod melten gel in proportion by the adjusting input voltage, the accuracy and the stability of screw back pressure when adopting lower cost to guarantee melten gel preferably.
Advantage of the present utility model is: adopt the back pressure regulating valve of comparatively common common overflow valve as melten gel, the cost performance of configuration is higher, and has reduced the manufacturing cost of complete machine; Fully utilized the remote control mouth of this overflow valve, the proportion pilot control of the oil circuit by this remote control mouth has realized the proportion control of this overflow valve, and mentality of designing is simple and direct, rate of comprehensive utilization of equipment height, and the accuracy and the stability of screw back pressure when having guaranteed melten gel; Between than valve valve and overflow valve common reversal valve is set, the ratio of screw back pressure is regulated when having guaranteed melten gel.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (9)
1. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus, comprise that be equipped with on the plastic rubber ejection shaping apparatus at least can be as the hydraulic oil pump (1) that penetrates partial power source, the delivery outlet of described hydraulic oil pump (1) is connected with at least the proportioning valve (2) that can proportion control hydraulic oil pump (1) goes out oil pressure, it is characterized in that: be communicated with reversal valve (3) on the built-in pressure output (2a) of described proportioning valve (2); Also be equipped with on the described plastic rubber ejection shaping apparatus to control and penetrate the overflow valve (4) that part goes up smelting glue back pressure, and the remote control mouth (4a) that this overflow valve (4) is shaped on is connected with the input port of reversal valve (3).
2. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 1, it is characterized in that: described reversal valve (3) is a two position three-way valve, and the 4th valve port (B) of this reversal valve (3) is connected with remote control mouth (4a), and first valve port (P) of described reversal valve (3) is connected with pressure output (2a).
3. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 2, it is characterized in that: described proportioning valve (2) is furnished with system's overflow valve (21) of control system oil return, described proportioning valve (2) also is furnished with the proportional control valve (22) of energy control system overflow valve (21) ratio work, and the 3rd remote control mouth of the oil-in of described proportional control valve (22) and system's overflow valve (21) all inserts on pressure output (2a); And described proportioning valve (2) is built-in with the leakage hole (2b) that can be connected with proportional control valve (22) oil-out.
4. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 3, it is characterized in that: second valve port (T) of described reversal valve (3) inserts on leakage hole (2b), and the 3rd valve port (A) of described reversal valve (3) is connected with the second remote control mouth of proportional control valve (22).
5. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 4, it is characterized in that: first valve port (P) of described reversal valve (3) communicates with the 3rd valve port (A), correspondingly, the 4th valve port (B) of reversal valve (3) communicates with second valve port (T).
6. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 4, it is characterized in that: first valve port (P) of described reversal valve (3) communicates with the 4th valve port (B), correspondingly, second valve port (T) of reversal valve (3) disconnects mutually with the 3rd valve port (A).
7. according to the governor motion of claim 5 or 6 described smelting glue back pressure set of plastic rubber ejection shaping apparatus, it is characterized in that: described overflow valve (4) is the straight moving subbase mounted overflow valve of band manual adjustments handle; And be connected with the Pressure gauge (41) that can show this overflow valve (4) back pressure value of controlling on the oil-in place pipeline of this overflow valve (4).
8. according to the governor motion of claim 5 or 6 described smelting glue back pressure set of plastic rubber ejection shaping apparatus, it is characterized in that: the overflow valve that described overflow valve (4) is installed for the straight moving tubular type of band manual adjustments handle; And the oil-in place pipeline of this overflow valve (4) is connected with the Pressure gauge (41) that can show this overflow valve (4) back pressure value of controlling.
9. the governor motion of smelting glue back pressure set of plastic rubber ejection shaping apparatus according to claim 7, it is characterized in that: described proportioning valve (2) also is furnished with the proportional flow control valve (23) of the fuel-displaced flow of proportion control hydraulic oil pump (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200841859U CN201192890Y (en) | 2008-03-19 | 2008-03-19 | Regulating mechanism for setting melt adhesive back pressure of plastic rubber ejection shaping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200841859U CN201192890Y (en) | 2008-03-19 | 2008-03-19 | Regulating mechanism for setting melt adhesive back pressure of plastic rubber ejection shaping apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201192890Y true CN201192890Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200841859U Expired - Lifetime CN201192890Y (en) | 2008-03-19 | 2008-03-19 | Regulating mechanism for setting melt adhesive back pressure of plastic rubber ejection shaping apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201192890Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311575A (en) * | 2021-12-30 | 2022-04-12 | 阿托斯(上海)液压有限公司 | Injection molding machine backpressure control device and method based on double closed-loop PID regulation |
-
2008
- 2008-03-19 CN CNU2008200841859U patent/CN201192890Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311575A (en) * | 2021-12-30 | 2022-04-12 | 阿托斯(上海)液压有限公司 | Injection molding machine backpressure control device and method based on double closed-loop PID regulation |
| CN114311575B (en) * | 2021-12-30 | 2024-03-29 | 阿托斯(上海)液压有限公司 | Injection molding machine back pressure control device and method based on double closed-loop PID regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090211 Effective date of abandoning: 20080319 |