CN102059763B - High-precision wax injection device - Google Patents
High-precision wax injection device Download PDFInfo
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- CN102059763B CN102059763B CN201010531950.9A CN201010531950A CN102059763B CN 102059763 B CN102059763 B CN 102059763B CN 201010531950 A CN201010531950 A CN 201010531950A CN 102059763 B CN102059763 B CN 102059763B
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Abstract
The present invention discloses a kind of high-precision wax injection device, solves that traditional wax injection device volume is large, weight is large, power consumption is high, precision is low and relies on the problems such as manual operations.High-precision wax injection device main body of the present invention by liquid wax control valve (3), liquid wax circulation basin (4) and wax pump (5) monomer series-connected and with many groups by mass flowmenter (8), wax injection valve (9) and many body devices of air deflector (10) monomer series-connected group of parallel connection connect, (1) liquid wax control valve (3) front end is connected with material liquid ceratuba road after precooling and combines formation; The air deflector of apparatus main body end is (10) (12) corresponding with cake wax; Apparatus main body is by liquid wax basin master control system (24), wax pump master control system (25), flowmeter master control system (26) and wax injection valve (9) control device and control centre is interconnected forms general control system.Package unit compact conformation of the present invention is reasonable, full-automatic, technique short route; Mass Control precision ± 0.1%; Without the need to shutting down adjustment; Conservation, to reduce costs.
Description
Technical field
The present invention relates to paraffin continuous shaping machine wax injection device, be specifically related to a kind of high-precision wax injection device.
Background technology
Existing traditional type paraffin continuous shaping machine wax injection device all continues to use piston type wax injection device, by cylinder body volume measurement, rely on the frequent manual cam of operator repeatedly to adjust, determine the interior liquid wax amount sucked of cylinder body, often adjust and once need at least one or two casting, condensation cycle, efficiency is low, and weight error is large, per kilogram error is 0.4% ~ 0.5%; Calculate by annual output 50000 tons of stencil plate forming machines, often adjust once by the defective work of generation more than 20 tons.And traditional type wax injection device volume is large, weight is large, consumptive material is many, power consumption is large, wastage of material amount is large, the manufacturing cycle is long, operate by hand.
Summary of the invention
The present invention discloses a kind of high-precision wax injection device, is Automatic Control, has the entirely new kind advanced means of adjustment casting Mass accuracy function automatically.
Take following technical scheme for solving the problems of the technologies described above the present invention: high-precision wax injection device main body by liquid wax control valve (3), liquid wax circulation basin (4) and wax pump (5) monomer series-connected and with many groups by mass flowmenter (8), wax injection valve (9) and many body devices of air deflector (10) monomer series-connected group of parallel connection connect, (1) liquid wax control valve (3) front end is connected with material liquid ceratuba road after precooling and combines formation; The air deflector of described apparatus main body end is (10) (12) corresponding with cake wax; Described apparatus main body by control respectively liquid wax circulation basin (4), wax pump (5), mass flowmenter (8) and wax injection valve liquid wax basin master control system (24) (9), wax pump master control system (25), flowmeter master control system (26) and wax injection valve (9) control device and control centre is interconnected forms general control system; Described apparatus main body is uniform is arranged on the middle lower floor position of paraffin continuous shaping machine machine head frame front portion and the middle lower floor position at middle part.
(4) described liquid wax circulation basin is cylinder blanket jacket type, note material liquid wax is treated after splendid attire precooling in tank body, liquid wax circulation basin is the thermostatted water of splendid attire insulation liquid wax in shell chuck (4), and 10. thermostatted water entrance is connected with the independently thermostatted water circulatory system with thermostatted water outlet; Liquid wax circulation basin (4) arrange liquid wax feeding mouth 1. with liquid wax discharging opening 2., bypass outlet 3. with reflux inlet 4.; (3) (2) 3. bypass outlet be connected with liquid wax control valve through return line; 8. 4. wax injection valve reflux inlet be (9) connected with valve refluxing opening; 5. 2. liquid wax discharging opening be connected with wax pump intake; (6) 6. wax pump discharge be connected with main pipeline, main pipeline (6) on be uniformly distributed the lateral that is (8) connected with mass flowmenter (7), 7. (8) each mass flowmenter connect with corresponding wax injection valve valve inlet (9) respectively, and (10) 9. wax injection valve valve outlet port (9) install air deflector.
The fluid level controller of described liquid wax basin master control system (24) is (13) arranged on liquid wax circulation basin (4) by top to tank and sensible bottom; (14) temperature monitor is arranged on liquid wax circulation basin (4) top cover top, and one end is that sensor is fixed on above top ends of cans, and the other end is that thermal detector leads directly to tank middle and lower part; Thermostatted water temperature monitor (15) is arranged on basin (4) in upper case chuck.
Described wax pump (5) with wax pump master control system (25) and frequency converter (19), the pressure manostat of wax pump master control system (25) is (16) arranged on wax pump discharge and 6. locates, (17) the pressure detecting instrument of pressure manostat (16) one end contacts with liquid wax in the duct, and (18) the pressure sensor of the other end is connected with wax pump master control system (25) is wired on pipeline; (19) frequency converter connects adjustment wax pump motor.
Described mass flowmenter (8) housing port configures temperature monitor (20) with encoder (23), temperature monitor thermo detector (20) and the mass flowmenter liquid wax (8) in housing keeps in touch, mass flowmenter (8) the outer temperature monitor sensor (20) of housing be connected with flowmeter master control system (26); Encoder (23) is arranged on mass flowmenter (8) on housing, and its one end via through holes contacts with the screw rod in housing; Flow controller (22) is arranged on flowmeter master control system (26).
(9) described wax injection valve is made up of valve body, cylinder (30), solenoid electric valve (29) and the Voltagre regulator (27) configured for solenoid electric valve (29) and DC power supply switch (28), the air pressure regulator (33), air pressure detector (32) and the gas control valve (31) that configure for cylinder (30); Solenoid electric valve (29) operating voltage 24 volts, is directly installed on valve body and 10. goes up, and cylinder (30) is connected with valve seal.
(10) described air deflector is mounted in wax injection valve valve outlet port (9) and 9. locates porous disc, and it is identical that 9. its external diameter and wax injection valve valve outlet port (9) locates outside dimension, is processed into several holes equidistant in disk; Above disk with wax injection valve valve outlet port (9) 9. flat seal be connected, below corresponding cake wax (12).
(11) described cake wax (12) more than one piece forms a cake wax group.
The present invention has the following advantages:
1, package unit compact conformation is reasonable, full-automatic, technique short route;
2, Mass Control precision ± 0.1%;
3, without the need to shutting down adjustment;
4, conservation, to reduce costs.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is further detailed explanation.
Fig. 1 is high-precision wax injection device general structure block diagram;
Fig. 2 is robot control system(RCS) block diagram;
Fig. 3 is wax injection valve structured flowchart;
Fig. 4 is air deflector schematic diagram.
Icon illustrates: material liquid ceratuba road 1 after precooling, liquid wax reflux pipeline 2 ＇, reflux line 2, liquid wax control valve 3, liquid wax circulation basin 4, wax pump 5, main pipeline 6, lateral 7, mass flowmenter 8, wax injection valve 9, air deflector 10, cake wax group 11, cake wax 12, fluid level controller 13, temperature monitor 14, thermostatted water temperature monitor 15, pressure manostat 16, pressure detecting instrument 17, pressure sensor 18, frequency converter 19, temperature monitor 20, flow detector 21, flow controller 22, encoder 23, liquid wax basin master control system 24, wax pump master control system 25, flowmeter master control system 26, Voltagre regulator 27, DC power supply switch 28, solenoid electric valve 29, cylinder 30, gas control valve 31, air pressure detector 32, air pressure regulator 33, pod apertures 34, liquid wax feeding mouth 1., liquid wax discharging opening 2., bypass outlet 3., reflux inlet 4., wax pump intake 5., wax pump discharge 6., valve inlet 7., valve refluxing opening 8., valve outlet port 9., thermostatted water entrance 10., thermostatted water exports.
Detailed description of the invention
High-precision wax injection device is one of paraffin continuous shaping machine main functional devices, the uniform middle lower floor position being arranged on paraffin continuous shaping machine machine head frame front portion and middle part of apparatus main body.
As shown in Figure 1, high-precision wax injection device main body by liquid wax control valve 3, liquid wax circulation basin 4 and monomer series-connected group of wax pump 5, with by monomer series-connected group of mass flowmenter 8, wax injection valve 9 and air deflector 10 again organize in parallel after many bodies shunting means in series; The liquid wax control valve 3 of apparatus main body front end is connected with material liquid ceratuba road 1 after anterior precooling; The air deflector 10 of apparatus main body end is corresponding with cake wax 12.
As shown in Figure 2,3, apparatus main body configuration robot control system(RCS), by controlling liquid wax basin master control system 24, wax pump master control system 25, flowmeter master control system 26 and wax injection valve 9 control device of liquid wax circulation basin 4, wax pump 5, flowmeter 8 and wax injection valve 9 respectively and control centre is interconnected forms general control system.
As shown in Figure 1, described liquid wax circulation basin 4 is cylinder blanket jacket types, the thermostatted water of splendid attire insulation liquid wax in shell chuck, and 10. thermostatted water entrance is connected with the independently thermostatted water circulatory system with thermostatted water outlet; In liquid wax circulation basin 4, note material liquid wax treated by splendid attire after 1. injecting precooling by liquid wax feeding mouth, and liquid wax circulation basin 4 capacity specifications presses the setting of forming machine unit interval casting amount; 5. 2. liquid wax discharging opening be connected with wax pump intake; 3. the bypass outlet that liquid wax circulation basin 4 is arranged is connected with liquid wax control valve 3 through reflux line 2, and 8. 4. the reflux inlet of wax injection valve 9 be connected with valve refluxing opening; 6. pump discharge is connected with main pipeline 6, main pipeline 6 is uniformly distributed the lateral 7 be connected with mass flowmenter 8, and 7. each mass flowmenter 8 connects with the valve inlet of corresponding wax injection valve 9 respectively, and 9. the valve outlet port of wax injection valve 9 installs air deflector 10.The fluid level controller 13 of liquid wax basin master control system 24 is arranged on liquid wax circulation basin 4 top, middle part and bottom, automatically controls liquid wax reserves in liquid wax circulation basin 4; Liquid level is divided into upper, middle and lower to limit, and liquid level belongs to normal expense in middle limit, when liquid level reach in limited time from bypass outlet 3. through reflux line 2 and liquid wax control valve 3, automatically flow out to liquid wax reflux pipeline 2 ＇; When liquid level sends alarm signal automatically close to lower fluid level controller 13 in limited time, control system will adjust chilldown system liquid wax flow automatically, make it be compensated in time, remain the material liquid wax of liquid wax circulation basin 4 abundance.Temperature monitor 14 is arranged on liquid wax circulation basin 4 top cover top, one end is that sensor is fixed on above top ends of cans, the other end is that thermal detector leads directly in the liquid wax of tank middle and lower part, liquid wax temperature signal in direct transmission liquid wax circulation basin 4, current liquid wax temperature is detected in good time, object is according to detected temperatures, judges current liquid wax physical parameter, and whether the checking wax pump 5 revolution same period and temperature flow meet setting value, and checking flows through the liquid wax accuracy of measurement of mass flowmenter 8 further; Liquid wax basin master control system 24 is according to liquid wax temperature parameter, and timely if desired to thermostatted water system issuing command, thermostatted water system regulates warm water temperature and flow automatically, and then ensures that in tank, liquid wax remains the casting temperature of setting.Thermostatted water temperature monitor 15 is arranged in basin 4 upper case chuck, transmission thermostatted water temperature signal.
As shown in Figure 2,6. the wax pump discharge of wax pump 5 configures pressure manostat 16, and the pressure detecting instrument 17 of pressure manostat 16 one end contacts with liquid wax in the duct, and the pressure sensor 18 of the other end is connected with wax pump master control system 25 is wired on pipeline; First monitor liquid wax flow by pressure manostat 16, wax pump master control system 25 goes out current liquid wax pressure with this parameter automatic measurement & calculation, regulate wax pump motor rotating speed accordingly by frequency converter 19, ensure liquid ceratuba road pressure stability all the time, make liquid wax flow meet next procedure needs.
Mass flowmenter 8 housing port configures liquid wax temperature monitor 20 and encoder 23, liquid wax in the thermo detector of temperature monitor 20 and mass flowmenter 8 housing keeps in touch, the sensor of temperature monitor 20 outside mass flowmenter 8 housing feeds back current liquid wax temperature to flowmeter master control system 26 continuously, flowmeter master control system 26, according to parameters such as the density of the current liquid wax trade mark display of manually input and viscosity, calculates the indexs such as fluid wax actual density and viscosity by the algorithm of setting in good time automatically; One end via through holes being arranged on the encoder 22 on mass flowmenter 8 housing contacts with the screw rod in housing, directly measure mass flowmenter 8 screw rod revolution by encoder 23 simultaneously and be transferred to flowmeter master control system 26 in time, flowmeter master control system 26, according to current liquid wax actual density and viscosity and screw speed, draws current flow parameter in time.That the frequency converter 19 configured by wax pump motor and the flow controller 22 being arranged on flowmeter master control system 26 are implemented to the adjustment of flow, flow controller 22 effect is that the revolution provided according to encoder 23 is controlled by frequency converter 19 pairs of wax pump motor rotating speeds wax pump master control system 25 signal transmission, pressure and the flow of liquid wax is controlled with this, make the liquid wax flow of the different trade mark by being able to accurate-metering during mass flowmenter 8, and then ensure Mass accuracy requirement needed for casting.
As shown in Figure 1,3, wax injection valve 9 is by the valve body of shell, the cylinder 30 be connected with valve seal, the air pressure regulator 33 configured before cylinder 30, air pressure detector 32 and gas control valve 31, and the solenoid electric valve 29 of configuration after the cylinder 30 and the Voltagre regulator 27 configured for solenoid electric valve 29 and DC power supply switch 28 are formed, cylinder piston rod and the valve rod of cylinder 30 are integrated, with the valve inlet of the stroke distances of its upper end in cylinder and speeds control valve body 7. with valve outlet port closed and aperture 9., solenoid electric valve 29 is directly installed on valve body or closes on independent installation, the effect of solenoid electric valve 29 is actions of the time controling wax injection valve cylinder 30 by setting, the Voltagre regulator 27 of configuration before solenoid electric valve 29 and direct-current switch power supply 28 can automatic regulating voltages, remain solenoid electric valve 29 stable operating voltage 24 volts, control curent change and make it to be stabilized in setting indication range, and ensure N number of solenoid electric valve 29 synchronization action, before cylinder 30, the gas pressurizer 33 of configuration is small gas basin (can configure according to gas consumption needed for the forming machine production capacity of setting), be arranged on forming machine nose upper front end air source inlet place, air pressure detector 32 is arranged on gas pressurizer 33 exit, in time to control centre's transport gas pressure signal, controller is gas control valve 31, be arranged on lead to cylinder 30 gas piping on, its action is by control centre's instruction, the i.e. information that provides according to air pressure detector 32 of control centre, automatically the aperture of gas control valve 31 is adjusted by the gas pressure parameter of setting, make it to keep pressure stability.Voltagre regulator 27 and air pressure regulator 33 are used for ensureing the solenoid electric valve 29 of frequent starting and the Millisecond closing time of cylinder 30 respectively, guarantee that the casting amount in the casting time reaches the Mass accuracy of setting further.
Valve body is the physical characteristic parameter according to liquid wax; as the design of density, viscosity and casting technological requirement; valve body structure is compact; valve inlet 7., 9. 8. positioning and directing is reasonable with valve refluxing opening for valve outlet port; main feature is that the runner 9. can located valve outlet port increases and increases outlet diameter, also can shorten runner and reduce outlet diameter; When valve outlet port 9. locate that runner is narrow and shallow, bore expands, reduce fluid flow to be conducive to accelerating flow velocity, bore expands i.e. increase and air deflector 10 attaching space simultaneously, be conducive to pressure when instant relief liquid wax enters outlet, prevent from liquid wax from flowing through producing to splash when air deflector 10 injects cake wax 12 affect casting precision and producing pollution; 8. valve refluxing opening is located at valve body top, and its effect is valve outlet port when 9. closing, and the liquid wax 7. come by valve inlet in time enters reflux line to reflux inlet 4. rework solution wax circulation basin 4.
As shown in Figure 4, air deflector 10 is the physical characteristic parameter according to liquid wax, as the design of density, viscosity and casting technological requirement, 9. the valve outlet port that air deflector 10 is mounted in wax injection valve 9 locates porous disc, it is identical that 9. its external diameter and the valve outlet port of wax injection valve 9 locate outside dimension, is processed into several pod apertures 34 equidistant in disk; Above disk with valve outlet port 9. flat seal be connected, below vertical corresponding cake wax 12.The structure of air deflector 10 can make liquid wax form silk column when casting, further alleviation liquid wax pressure, splash and drip because pressure produces greatly in cake wax 12 when preventing from flowing through pod apertures 34, by setting-up time, therefore casting process remains that flow meets setting value, and without waste and pollution.
When paraffin continuous shaping machine works, high-precision wax injection device enters running status.
First, the fluid level controller 13 being arranged on liquid wax circulation basin 4 top directly controls the closed of liquid wax control valve 3 automatically, automatically controls liquid wax reserves in liquid wax circulation basin 4; Be arranged on liquid wax temperature monitor 14, the thermostatted water temperature monitor 15 at liquid wax circulation basin 4 top, liquid wax temperature in current liquid wax circulation basin 4 is detected in good time; Temperature monitor 14 host communication that is direct and liquid wax basin master control system 24 contacts, and its temperature deviation carries out adjustment by liquid wax basin master control system 24 according to setting value and processes, and automatically adjust the Mass accuracy of liquid wax in time, while also can manually be understood on the touchscreen; Change routine thermometer just for thermostatted water system provides the single effect of water temperature parameters, achieve wider and higher level function.
Liquid wax in liquid wax circulation basin 4 is by the temperature of setting, mass flow instrument 8 to wax injection valve 9 is flowed through by wax pump 5 conveying continuously according to the pressure set, flow velocity, flow by wax pump 5, along with the movement of cake wax group 11, batch (-type) carries out casting at regular time and quantity to cake wax 12 continuously.
Frequency converter 19 pairs of wax pump motor constant voltages that the pressure manostat 16 that wax pump 5 is arranged is configured by wax pump motor and adjusting rotary speed, control liquid wax flow velocity, flow, and then make liquid wax pressure remained steady; Frequency converter 19 range of set value 0Hz ~ 50Hz.
Mass flow instrument 8 configures temperature monitor 20, flow detector 21 and flow controller 22, can be that the current material physical parameter set in system adjusts according to its information provided, to control its flow, keep accurate mass figures.
Whole flow process is run under automatic control, and casting Mass accuracy keeps setting value all the time automatically, from truly achieving automation, fundamentally eliminates the error component of Mass accuracy.
Claims (8)
1. a high-precision wax injection device, it is characterized in that: described high-precision wax injection device main body is monomer series-connected and connect with many groups of many body devices by the monomer series-connected group of parallel connection of mass flowmenter, wax injection valve and air deflector by liquid wax control valve, liquid wax circulation basin and wax pump, liquid wax control valve front end is connected with material liquid ceratuba road after precooling and combines and forms; The air deflector of described apparatus main body end is corresponding with cake wax; Described apparatus main body by controlling liquid wax circulation basin respectively, liquid wax basin master control system, wax pump master control system, flowmeter master control system and wax injection valve control device that wax pump, mass flow take into account wax injection valve and control centre is interconnected forms general control system; Described apparatus main body is uniform is arranged on the middle lower floor position of paraffin continuous shaping machine machine head frame front portion and the middle lower floor position at middle part.
2. high-precision wax injection device according to claim 1, it is characterized in that: described liquid wax circulation basin is cylinder blanket jacket type, note material liquid wax is treated after splendid attire precooling in tank body, the thermostatted water of splendid attire insulation liquid wax in liquid wax circulation basin shell chuck, thermostatted water entrance and thermostatted water outlet are connected with the independently thermostatted water circulatory system; Liquid wax circulation basin arranges liquid wax feeding mouth and liquid wax discharging opening, bypass outlet and reflux inlet; Bypass outlet is connected with liquid wax control valve through return line; Reflux inlet is connected with the valve refluxing opening of wax injection valve; Liquid wax discharging opening is connected with wax pump intake; Wax pump discharge is connected with main pipeline, main pipeline is uniformly distributed the lateral be connected with mass flowmenter, and each mass flowmenter connects with the valve inlet of corresponding wax injection valve respectively, and the valve outlet port of wax injection valve installs air deflector.
3. high-precision wax injection device according to claim 1, is characterized in that: the fluid level controller of described liquid wax basin master control system is arranged on liquid wax circulation tank top, middle part and bottom; Temperature monitor is arranged on liquid wax circulation basin top cover top, and one end is that sensor is fixed on above top ends of cans, and the other end is that thermal detector leads directly to tank middle and lower part; Thermostatted water temperature monitor is arranged in basin upper case chuck.
4. high-precision wax injection device according to claim 1, it is characterized in that: the pressure manostat of described wax pump master control system is arranged on wax pump discharge place, the pressure detecting instrument of pressure manostat one end contacts with liquid wax in the duct, and the pressure sensor of the other end is connected with wax pump master control system is wired on pipeline; Frequency converter connects adjustment wax pump motor.
5. high-precision wax injection device according to claim 1, it is characterized in that: described mass flowmenter housing port configures temperature monitor and encoder, liquid wax in the thermo detector of temperature monitor and mass flowmenter housing keeps in touch, and is connected with flowmeter master control system at the sensor of the outer temperature monitor of mass flowmenter housing; Encoder is arranged on mass flowmenter housing, and its one end via through holes contacts with the screw rod in housing; Flow controller is arranged on flowmeter master control system.
6. high-precision wax injection device according to claim 1, is characterized in that: described wax injection valve is made up of valve body, cylinder, solenoid electric valve and the Voltagre regulator configured for solenoid electric valve and DC power supply switch, air pressure regulator, air pressure detector and gas control valve for cylinder arrangement; Solenoid electric valve operating voltage 24 volts, be directly installed on valve body, cylinder is connected with valve seal.
7. high-precision wax injection device according to claim 1 and 2, it is characterized in that: described air deflector is mounted in the porous disc at the valve outlet port place of wax injection valve, its external diameter is identical with the valve outlet port place outside dimension of wax injection valve, is processed into several holes equidistant in disk; Be connected with the valve outlet port flat seal of wax injection valve above disk, below corresponding cake wax.
8. high-precision wax injection device according to claim 1, is characterized in that: described cake wax more than one piece forms a cake wax group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010531950.9A CN102059763B (en) | 2010-12-14 | 2010-12-14 | High-precision wax injection device |
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| CN201010531950.9A CN102059763B (en) | 2010-12-14 | 2010-12-14 | High-precision wax injection device |
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| CN102059763A CN102059763A (en) | 2011-05-18 |
| CN102059763B true CN102059763B (en) | 2015-12-09 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103171070A (en) * | 2013-04-03 | 2013-06-26 | 大连天禄机电设备制造有限公司 | Wax filling device |
| CN104226509A (en) * | 2013-06-08 | 2014-12-24 | 中核核电运行管理有限公司 | Continuous wax injection device and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201317075Y (en) * | 2008-12-27 | 2009-09-30 | 秦皇岛市北戴河兰德科技有限责任公司 | High-accuracy paraffin injection automatic control system of paraffin forming machine |
| CN201423733Y (en) * | 2009-05-08 | 2010-03-17 | 大连天禄机电设备制造有限公司 | Middle-sized paraffin continuous former |
| CN101776921A (en) * | 2010-01-11 | 2010-07-14 | 大连天禄机电设备制造有限公司 | Main chain tension predicting control system of paraffin continuous shaping machine |
| CN101844383A (en) * | 2010-05-06 | 2010-09-29 | 于永成 | Plate heat exchanger in process unit for paraffin continuous forming machine and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005219436A (en) * | 2004-02-09 | 2005-08-18 | Seiko Epson Corp | Manufacturing equipment of lens |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201317075Y (en) * | 2008-12-27 | 2009-09-30 | 秦皇岛市北戴河兰德科技有限责任公司 | High-accuracy paraffin injection automatic control system of paraffin forming machine |
| CN201423733Y (en) * | 2009-05-08 | 2010-03-17 | 大连天禄机电设备制造有限公司 | Middle-sized paraffin continuous former |
| CN101776921A (en) * | 2010-01-11 | 2010-07-14 | 大连天禄机电设备制造有限公司 | Main chain tension predicting control system of paraffin continuous shaping machine |
| CN101844383A (en) * | 2010-05-06 | 2010-09-29 | 于永成 | Plate heat exchanger in process unit for paraffin continuous forming machine and application thereof |
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