CN201864653U

CN201864653U - Glass molding machine

Info

Publication number: CN201864653U
Application number: CN2010206246021U
Authority: CN
Inventors: 黄柏良
Original assignee: XIAMEN FREEDOM OPTICAL TECHNOLOGY Co Ltd
Current assignee: XIAMEN FREEDOM OPTICAL TECHNOLOGY Co Ltd
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2011-06-15
Anticipated expiration: 2020-11-25

Abstract

The utility model discloses a glass molding machine which comprises a glass molding chamber, a lower die cavity positioned in the glass molding chamber, an upper die head matched with the glass molding chamber, a power device for applying pressure to the upper die head to shift the upper die head, a cooler for cooling the lower die cavity and the glass molding chamber rapidly, a control system, a vacuumizing device and an air charging device, wherein a heater is arranged in the upper die head; a temperature sensor, a displacement sensor connected with the upper die head and a control system are arranged in the glass molding chamber; the control system can control a power device by signals output by the temperature sensor and the displacement sensor so as to change the pressure of the upper die head along with the temperature change of the glass molding chamber; the power device preferably comprises a cylinder, an air source, a three-position five-way valve and a speed regulating valve; and the control system comprises a electrical control proportioning valve, a programmable logic controller (PLC), an AD digital processor, a touch screen and a power module. The glass molding machine can improve the yield and the quality of finished products, and can be applicable to batch production.

Description

The glass molds pressing machine

Technical field

The utility model relates to the molded technical field of glass molds, especially a kind of glass molds pressing machine of making aspherics glass.

Background technology

At present, aspheric surface glass molds pressing machine is earlier the glass preform to be placed between upper cores and the following die, then the glass preform is heated, after the glass preform reaches certain temperature, utilize the servomotor application of force, promote die up and down, the extruding preform becomes our needed glass mirror shape.This equipment is by level pressure moment once shaped; Because the big regular meeting of moment moulding required pressure causes the glass preform fragmentation in the mould; the moment moulding is the specific refractory power and the internal stress of wayward finished product also; make that quality is extremely unstable when producing in enormous quantities; to also have its bigger shortcoming be to be close to the subsides that make glass and mould at hot environment bed die and glass nitre material because of the high pressure of long period to pay probability and rise greatly in the level pressure moulding on the other hand, reduces yield rate.

The utility model content

The technical problems to be solved in the utility model provides a kind of glass molds pressing machine, and it can improve the yield rate and the quality of finished product, applicable to production in enormous quantities.

For achieving the above object, the technical solution of the utility model is: a kind of glass molds pressing machine, comprise glass forming chamber, be in the lower mode cavity of glass forming chamber, the last die head that matches with glass forming chamber, last die head is exerted pressure and made the power set of die head displacement, to lower mode cavity and the quick refrigerative refrigerating unit of glass forming chamber, in the last die head well heater is housed, glass forming chamber is equipped with temperature sensor, the displacement sensor that can measure die head miles of relative movement that is connected with last die head is housed, can controls the Controlling System that power set makes that the pressure of going up die head changes along with the temperature variation of glass forming chamber according to the signal of described temperature sensor and displacement sensor output.

Above-mentioned glass molds pressing machine also can comprise the vacuum extractor that links to each other with glass forming chamber.

Also can comprise to glass forming chamber at the glass molds pressing machine that is provided with described vacuum extractor and to fill the inflation mechanism of nitrogen or other rare gas element and to be arranged on valve between described inflation mechanism and the glass forming chamber.

Above-mentioned glass molds pressing machine, described power set can preferably be made up of cylinder, source of the gas, three position five-way valve, speed-regulating valve, source of the gas enters cylinder by three position five-way valve, speed-regulating valve is contained between three position five-way valve and the cylinder lower port, certainly also need comprise corresponding pipeline, can comprise that also some known devices such as relief valve etc. further improve gas circuit.

When adopting by cylinder, source of the gas, three position five-way valve, during power set that speed-regulating valve is formed, described Controlling System comprises electronically controlled proportional valve, the PLC controller, the AD digital processing unit, touch-screen, the power module of power supply is provided to PLC controller and AD digital processing unit and touch-screen, electronically controlled proportional valve is arranged between cylinder upper port and the three position five-way valve, the AD digital processing unit receives the signal feedback of temperature sensor and displacement sensor and gives the PLC controller, and the PLC controller is transferred to electronically controlled proportional valve to the data of handling by the AD digital processing unit again and controls and enter cylinder gas pressure and flow.

The utility model is because in the process that last die head presses down, displacement sensor also and then descends, can detect the fall off rate and the distance of die head, displacement sensor is transferred to Controlling System to this signal, Controlling System is handled speed that presses down and the pressure that output signal is controlled power set after the parameter of this parameter and temperature sensor transmission being compared again, make the glass preform of glass forming chamber according to the time, temperature, softening degree, four parameters of precompressed pressure are subjected to the control and the adjusting of processing requirement, make the progressively moulding in the process of heating of glass preform, help eliminating the internal stress of glass finished product, feed glass finished product specific refractory power, prevent the fragmentation of glass, reduce the subsides of glass and mould and pay probability, improve the yield rate and the quality of glass finished product greatly; On the other hand, cool off taking-up fast by cooling system after the moulding of glass preform, make equipment of the present utility model can enter next circulation very soon, applicable to production in enormous quantities.

In glass preform moulding process, make glass forming chamber be under the vacuum condition or and can effectively prevent the mould oxidation on surface at high temperature, the work-ing life of improving mould the filled nitrogen of glass forming chamber or other rare gas element.

Structure is simplified more during power set that employing is made up of cylinder, source of the gas, three position five-way valve, speed-regulating valve, and easy for installation, travelling speed is fast.

Controlling System by electronically controlled proportional valve, PLC controller, AD digital processing unit, touch-screen are formed makes man machine operation interface more flexible, convenient input and control to processing parameter.

Description of drawings

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is that the pressure of the temperature of the utility model glass forming chamber and last die head is at total work bat time period change curve.

Embodiment

Below in conjunction with accompanying drawing and concrete embodiment the utility model is described in further detail.

Shown in Figure 1, a kind of glass molds pressing machine, comprise glass forming chamber 1, be in the lower mode cavity 2 of glass forming chamber 1, the last die head 3 that matches with glass forming chamber 1, last die head 3 is exerted pressure and made the power set 4 of die head 3 displacements, to lower mode cavity 2 and glass forming chamber 1 quick refrigerative refrigerating unit 5, in the last die head 3 well heater 6 is housed, glass forming chamber 1 is equipped with temperature sensor 7, the displacement sensor 8 that can measure die head 3 miles of relative movement that is connected with last die head 3 is housed, can controls the Controlling System 9 that power set 4 makes that the pressure of going up die heads 3 changes along with the temperature variation of glass forming chamber 1 according to the signal of described temperature sensor 7 and displacement sensor 8 outputs.

Above-mentioned glass molds pressing machine also can comprise the vacuum extractor 10 that links to each other with glass forming chamber 1.

Also can comprise to glass forming chamber 1 at the glass molds pressing machine that is provided with described vacuum extractor 10 and to fill the inflation mechanism 11 of nitrogen or other rare gas element and to be arranged on valve 111 between described inflation mechanism 11 and the glass forming chamber 1.

Above-mentioned glass molds pressing machine, described power set 4 can preferably be made up of cylinder 41, source of the gas 42, three position five-way valve 43, speed-regulating valve 44, source of the gas 42 enters cylinder 41 by three position five-way valve 43, speed-regulating valve 44 is contained between three position five-way valve 43 and cylinder 41 lower port, certainly also need comprise corresponding pipeline, can comprise that also some known devices such as relief valve 45 etc. further improve gas circuit.

When adopting by cylinder 41, source of the gas 42, three position five-way valve 43, during power set 4 that speed-regulating valve 44 is formed, described Controlling System 9 comprises electronically controlled proportional valve 91, PLC controller 92, AD digital processing unit 93, touch-screen 94, the power module 95 of power supply is provided to PLC controller 92 and AD digital processing unit 93 and touch-screen 94, electronically controlled proportional valve 91 is arranged between cylinder 41 upper port and the three position five-way valve 43, AD digital processing unit 93 receives the signal feedback of temperature sensors 7 and displacement sensor 8 and gives PLC controller 92, and PLC controller 92 is transferred to electronically controlled proportional valve 91 to the data of handling by AD digital processing unit 93 again and controls and enter cylinder 41 gaseous tensions and flow.

This glass molds pressing machine workflow is as follows: PLC controller 92 sends B that signal makes three position five-way valve 43 and holds, the air-flow of source of the gas 42 enters cylinder 41 by three position five-way valve 43 electronically controlled proportional valve 91 of flowing through from the upper port of cylinder 41 after relief valve 45 pressure regulation, this moment, electronically controlled proportional valve 91 was connected source of the gas 42 with low valve valve voltage, the first operating pressure section before making cylinder 41 with the speed execution precompressed of setting, this moment, well heater began glass preform 12 is heated.

When displacement sensor 8 and temperature sensor 7 detect in advance set(ting)value after the several seconds, this moment, cylinder 41 also remained on the pressure of the first operating pressure section, then PLC controller 92 sends signal by AD digital processing unit 93 and gives electronically controlled proportional valve 91, make the pressure change that enters cylinder 41, cylinder 41 enters the second operating pressure section.

After finishing the work of the second operating pressure section by predefined time cylinder 41, enter the 3rd operating pressure section, this pressure stage is the total head profiled section, electronically controlled proportional valve 91 total heads are connected and are finished until total work bat time, total work bat time is to preestablish by calculated with mathematical model, and the pressure of the temperature of glass forming chamber 1 and last die head 3 is seen Fig. 2 at total work bat time period change curve.

Next, displacement sensor 8 detects cylinder 41 stroke to the end, send alarm command and PLC controller 92 and link up the tailend of total bat times, when determination data and check by after will successively disconnect electronically controlled proportional valve 91, three position five-way valve 43 B end power supply it is resetted.

Then, the E of three position five-way valve 43 is held, source of the gas 42 enters cylinder 41 by speed-regulating valve 44 through the lower port of cylinder 41, last die head 3 rises, the E of three position five-way valve 43 end dead electricity resetted and finishes a working cycle after rising put in place, can take out the glass finished product after last 5 pairs of glass forming chambers 1 of refrigerating unit, glass finished product 10 and lower mode cavity 2 cool off fast, equipment enters next working cycle.

Before die head 3 presses down on after glass preform 12 is sent into glass forming chamber 1, glass forming chamber 1 is in air-tight state, can utilize 10 pairs of glass forming chambers 1 of vacuum extractor to vacuumize this moment, open valve 111 to glass forming chamber 1 filled nitrogen or other rare gas element after reaching predetermined vacuum level, reach and preestablish valve-off 111 behind the pressure, make the glass preform in the process of moulding, isolate, prevent the oxidation of mould with oxygen; The action of vacuum unit 10 and valve 111 also can be controlled by PLC controller 92.

Power set of the present utility model also can adopt hydraulic efficiency system, and Controlling System is basic identical.

Above working process and device hardware can make the progressively moulding in heat-processed of glass preform, help eliminating the internal stress of glass finished product, and feed glass finished product specific refractory power reduces the subsides of glass and mould and pays probability; Power set of the present utility model also can be utilized devices such as servomotor, and those skilled in the art is so long as the change that utilizes this design to make unsubstantiality all falls into the protection domain of this case.

Claims

1. glass molds pressing machine, comprise glass forming chamber, be in the lower mode cavity of glass forming chamber, the last die head that matches with glass forming chamber, last die head is exerted pressure and made the power set of die head displacement, to lower mode cavity and the quick refrigerative refrigerating unit of glass forming chamber, it is characterized in that: go up in the die head well heater is housed, glass forming chamber is equipped with temperature sensor, the displacement sensor that can measure die head miles of relative movement that is connected with last die head is housed, can controls the Controlling System that power set makes that the pressure of going up die head changes along with the temperature variation of glass forming chamber according to the signal of described temperature sensor and displacement sensor output.

2. glass molds pressing machine according to claim 1 is characterized in that: described glass molds pressing machine also comprises the vacuum extractor that links to each other with glass forming chamber.

3. glass molds pressing machine according to claim 2 is characterized in that: described glass molds pressing machine also comprises to glass forming chamber and fills the inflation mechanism of nitrogen or other rare gas element and be arranged on valve between described inflation mechanism and the glass forming chamber.

4. according to each described glass molds pressing machine of claim 1 to 3, it is characterized in that: described power set comprises cylinder, source of the gas, three position five-way valve, speed-regulating valve, source of the gas enters cylinder by three position five-way valve, and speed-regulating valve is contained between three position five-way valve and the cylinder lower port.

5. glass molds pressing machine according to claim 4, it is characterized in that: described Controlling System comprises electronically controlled proportional valve, the PLC controller, the AD digital processing unit, touch-screen, the power module of power supply is provided to PLC controller and AD digital processing unit and touch-screen, electronically controlled proportional valve is arranged between cylinder upper port and the three position five-way valve, the AD digital processing unit receives the signal feedback of temperature sensor and displacement sensor and gives the PLC controller, and the PLC controller is transferred to electronically controlled proportional valve to the data of handling by the AD digital processing unit again and controls and enter cylinder gas pressure and flow.