CN105291300A - Method and machine for pre-processing of molding material, injection molding machine and injection molding method - Google Patents
Method and machine for pre-processing of molding material, injection molding machine and injection molding method Download PDFInfo
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- CN105291300A CN105291300A CN201510378826.6A CN201510378826A CN105291300A CN 105291300 A CN105291300 A CN 105291300A CN 201510378826 A CN201510378826 A CN 201510378826A CN 105291300 A CN105291300 A CN 105291300A
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Abstract
The present invention provides a method and machine for pre-processing of molding material, an injection molding machine and an injection molding method for further inhibition of oxidation of the molding material through addition of the content of inactive gas in the molding material. After the molding material is heated to be dried, the temperature of the molding material in the container (40) having the inactive gas is reduced. At the same time, the pressure of the container (40) maintains at an approximately constant value and the temperature of the molding material is reduced. In the container (40), the temperature of the molding material is slower reduced then natural cooling. Then, the molding material after reduced temperature is supplied to a molding machine (2) so that the content of the inactive gas in the molding material is increased. Therefore the oxidation of the molding material at molding may be inhibited.
Description
The application advocates the priority based on the priority of No. 2014-136312nd, the Japanese patent application of application on July 1st, 2014 and No. 2015-109397th, the Japanese patent application of application on May 29th, 2015.The full content of its application is by reference to being applied in this description.
Technical field
The present invention relates to a kind of preprocess method of moulding material to forming machine supply and pretreatment unit, and make pretreated after moulding material melting after be expelled to injection (mo(u)lding) machine in mould and injection moulding method.
Background technology
In the past, in the manufacturing process of naval stores, the moulding materials such as the resin particle supplied to injection (mo(u)lding) machine are carried out to the pretreatment such as drying.About the pretreatment of moulding material, such as on the books in patent document 1.In the device of patent document 1, bits shape or granular resin material are supplied (with reference to figure 1) by the plasticizing apparatus to injection (mo(u)lding) machine after dehumidifying heat pump, inactive gas permeability apparatus and hopper.
Patent document 1: Japanese Unexamined Patent Publication 2001-353750 publication
Patent document 2: Japanese Unexamined Patent Publication 10-87752 publication
But, if to the moulding material oxidation of injection (mo(u)lding) machine supply, then can the variable colors such as xanthochromia be produced in the naval stores after shaping.Therefore, in pretreatment unit in the past, by accumulate moulding material hopper inside supply as inactive gas nitrogen etc. and be suppressed to the oxidation of shaped material.
Further, record in patent document 2 by keeping resin particle under inactive gas atmosphere and be reduced in oxygen amount contained in resin particle.Be lowered into the content of the oxygen in shaped material if so, replace, make containing inactive gas in moulding material, then after this moulding material is supplied to injection (mo(u)lding) machine, even if the oxidation of shaped material also can be suppressed in the process of melting and injection in injection (mo(u)lding) machine.
But, in recent years, for the naval stores etc. being used in optics, require that quality improves further, and requirement can suppress the technology of the variable color produced because of oxidation further.
Summary of the invention
The present invention completes in light of this situation, the preprocess method of the moulding material of moulding material oxidation, pretreatment unit, injection (mo(u)lding) machine and injection moulding method when its object is to provide a kind of content by increasing the inactive gas in moulding material and can suppress shaping further.
1st invention of the application is a kind of preprocess method of the moulding material to forming machine supply, and the preprocess method of described moulding material has: operation a), makes it dry by hot briquetting material; Operation b), after described operation is a), in the container being filled with inactive gas, the temperature of moulding material is reduced; And operation c), at described operation b) after, to described forming machine supply moulding material, at described operation b) in, the pressure in described container is maintained constant, and the temperature of moulding material is reduced.
2nd invention of the application is the preprocess method of the moulding material of the 1st invention, wherein, at described operation b) in, the temperature of moulding material is reduced more lentamente than naturally cooling.
3rd invention of the application is the preprocess method of the moulding material to forming machine supply, and the preprocess method of described moulding material has: operation a), makes it dry by hot briquetting material; Operation b), after described operation is a), in the container being filled with inactive gas, the temperature of moulding material is reduced; And operation c), at described operation b) after, to described forming machine supply moulding material, at described operation b) in, the temperature of moulding material is reduced more lentamente than naturally cooling.
4th invention of the application is the preprocess method of the moulding material of the 2nd invention or the 3rd invention, wherein, at described operation b) in, along with the process of time, the temperature of the time per unit of moulding material reduces amplitude and increases.
5th invention of the application is the preprocess method of the moulding material of the 2nd invention or the 3rd invention, wherein, at described operation b) in, the temperature stage of moulding material is reduced.
6th invention of the application is the preprocess method of the moulding material of arbitrary invention in the 1st invention to the 5th invention, wherein, at described operation b) in, make the temperature of moulding material be reduced to less than 60 DEG C.
7th invention of the application is the preprocess method of the moulding material of arbitrary invention in the 1st invention to the 6th invention, wherein, described operation b) in described container in pressure ratio described in environmental pressure outside container high.
8th invention of the application is the preprocess method of the moulding material of the 7th invention, wherein, described operation b) in described container in pressure ratio described in the injection pressure of moulding material in forming machine low.
9th invention of the application is the preprocess method of the moulding material of the 8th invention, wherein, described operation b) in described container in pressure be less than 1MPa.
10th invention of the application is the preprocess method of the moulding material of arbitrary invention in the 1st invention to the 9th invention, wherein, at described operation b) after, and at described operation c) before, also have and the temperature of moulding material is maintained constant operation.
11st invention of the application is the preprocess method of the moulding material of arbitrary invention in the 1st invention to the 10th invention, the preprocess method of described moulding material also has operation d), at this operation d) in, measure to the temperature near the supply port of described forming machine, and control the temperature being in injection nozzle moulding material nearby in described forming machine according to measured temperature.
12nd invention of the application is the preprocess method of the moulding material of arbitrary invention in the 1st invention to the 11st invention, wherein, using moulding material used for optical part as handling object.
13rd invention of the application is the pretreatment unit of the moulding material to forming machine supply, and the pretreatment unit of described moulding material possesses: cooled containers, by by heating, dried moulding material is contained in inside; Gas supply part, is filled in the inside of described cooled containers by inactive gas; And cooling body, the temperature of the moulding material be contained in described cooled containers is reduced, by from described gas supply part supply inactive gas, thus the pressure in described cooled containers is maintained constant, further, described cooling body makes the temperature of moulding material reduce.
14th invention of the application is the preprocess method of the moulding material of the 13rd invention, and wherein, described cooling body makes the temperature of moulding material reduce more lentamente than naturally cooling.
15th invention of the application is the pretreatment unit of the moulding material to forming machine supply, and the pretreatment unit of described moulding material possesses: cooled containers, by by heating, dried moulding material lodges in inside; Gas supply part, is filled in the inside of described cooled containers by inactive gas; And cooling body, the temperature of the moulding material lodged in described cooled containers is reduced, and described cooling body makes the temperature of moulding material reduce more lentamente than naturally cooling.
16th invention of the application is the pretreatment unit of the moulding material of arbitrary invention in the 13rd invention to the 15th invention, the pretreatment unit of described moulding material also possesses: heating container, than the upstream side of described cooled containers closer to transport path, moulding material is lodged in inside; Heat drying mechanism, makes it dry by heating the moulding material that lodges in described heating container; And conveyance pipe, from described heating container to described cooled containers conveyance moulding material.
17th invention of the application is the pretreatment unit of the moulding material of arbitrary invention in the 13rd invention to the 16th invention, the pretreatment unit of described moulding material also has outlet, this outlet is at described cooled containers or between other containers and described forming machine in the downstream of described cooled containers, and and ft connection, the environmental pressure of pressure ratio outside of other containers described in described cooled containers or the downstream that is positioned at described cooled containers is high.
18th invention of the application is the pretreatment unit of the moulding material of arbitrary invention in the 13rd invention to the 17th invention, the pretreatment unit of described moulding material also has thermoregulative mechanism, and the temperature by the cooled moulding material of described cooling body is maintained constant by this thermoregulative mechanism.
19th invention of the application is the pretreatment unit of the moulding material of arbitrary invention in the 13rd invention to the 18th invention, wherein, using moulding material used for optical part as handling object.
20th invention of the application is a kind of injection (mo(u)lding) machine, and after making moulding material melting, be expelled in mould, described injection (mo(u)lding) machine has: cylinder body; Supply port, the moulding material after pretreated to described cylinder body supply; Heater, in described cylinder body, makes moulding material melting; Injection nozzle, from the moulding material of described cylinder body injection melting; And screw rod, in described cylinder body, to described injection nozzle side conveyance moulding material, in the container of moulding material containing the drying by heating, by the supply of inactive gas, the pressure in described container is maintained constant, and the moulding material that temperature is reduced is supplied to described supply port.
21st invention of the application is the injection (mo(u)lding) machine of the 20th invention, wherein, makes temperature be supplied to described supply port than naturally cooling the moulding material reduced more lentamente in described container.
22nd invention of the application is a kind of injection (mo(u)lding) machine, and after making moulding material melting, be expelled in mould, described injection (mo(u)lding) machine has: cylinder body; Supply port, the moulding material after pretreated to described cylinder body supply; Heater, in described cylinder body, makes moulding material melting; Injection nozzle, from the moulding material of described cylinder body injection melting; And screw rod, in described cylinder body, to described injection nozzle side conveyance moulding material, containing the moulding material of the drying by heating and being filled with in the container of inactive gas, temperature is made to be supplied to described supply port than naturally cooling the moulding material reduced more lentamente.
23rd invention of the application is the injection (mo(u)lding) machine of arbitrary invention in the 20th invention to the 22nd invention, and wherein, the temperature in described container makes the moulding material being maintained stationary temperature be supplied to described supply port after reducing.
24th invention of the application is the injection (mo(u)lding) machine of arbitrary invention in the 20th invention to the 23rd invention, and wherein, described injection (mo(u)lding) machine, according to the temperature near described supply port, controls the temperature being in described injection nozzle moulding material nearby in described cylinder body.
25th invention of the application is for after making moulding material melting, and be expelled to the injection moulding method in mould, described injection moulding method has: operation x), the moulding material after pretreated to cylinder body supply via supply port; Operation y), in described cylinder body, make moulding material melting; Operation z), the moulding material be melted is injected from the injection nozzle of described cylinder body, at described operation x) in, in the container of moulding material containing the drying by heating, by the supply of inactive gas, the pressure in described container is maintained constant, further, the moulding material reducing temperature is supplied to described cylinder body via described supply port.
26th invention of the application is the injection moulding method of the 25th invention, wherein, at described operation x) in, in described container, make temperature than naturally cooling the moulding material reduced more lentamente via described supply port to described cylinder body supply.
27th invention of the application is for being expelled to the injection moulding method in mould after making moulding material melting, and described injection moulding method has: operation x), via supply port, the moulding material after pretreated to cylinder body supply; Operation y), in described cylinder body, make moulding material melting; Operation z), the moulding material be melted is injected from the injection nozzle of described cylinder body, at described operation x) in, containing the moulding material of the drying by heating and being filled with in the container of inactive gas, make temperature than naturally cooling the moulding material reduced more lentamente via described supply port to described cylinder body supply.
28th invention of the application is the injection moulding method of arbitrary invention in the 25th invention to the 27th invention, wherein, at described operation x) in, the temperature in described container makes the moulding material being maintained stationary temperature supply to described cylinder body via described supply port after reducing.
29th invention of the application is the injection moulding method of arbitrary invention in the 25th invention to the 28th invention, wherein, at described operation y) in, according to the temperature near described supply port, control the temperature being in described injection nozzle moulding material nearby in described cylinder body.
Invention effect
According to the 1st invention ~ the 29th invention of the application, the content of the inactive gas in moulding material can be increased.Its result, the oxidation of moulding material when can suppress shaping.
Especially, according to the 4th invention and the 5th invention of the application, at operation b) in, can extend between the megathermal period.Thereby, it is possible to make, containing enough inactive gas in moulding material, the temperature of moulding material can be made to reduce simultaneously.
Especially, according to the 6th invention and the 7th invention of the application, the content of the inactive gas in moulding material can be increased further.
Especially, according to the 10th invention of the application, the 18th invention, the 23rd invention and the 28th invention, the temperature of the moulding material to forming machine supply can be made more stable.Its result, can stably moulding resin product.
Especially, according to the 11st invention of the application, the 24th invention and the 29th invention, the position of shaped material in injection nozzle nearby melting can be adjusted to.Thus, such as make moulding material in the dead ahead melting of injection nozzle, thus can shorten between the megathermal period.Its result, can be suppressed to the oxidation of shaped material further.
Especially, according to the 17th invention of the application, gas can be suppressed from forming machine adverse current to cooled containers or other containers in downstream being positioned at cooled containers.Thereby, it is possible to suppress to rise in the temperature of moulding material before forming machine supply.
Accompanying drawing explanation
Fig. 1 is the figure of the structure representing pretreatment unit and injection (mo(u)lding) machine.
Fig. 2 is the figure of the structure representing injection (mo(u)lding) machine.
Fig. 3 is the block diagram of the structure of the control system representing pretreatment unit and injection (mo(u)lding) machine.
Fig. 4 is the flow chart representing a pretreated example.
Fig. 5 is the curve map of the example of the variations in temperature of the resin particle represented in cooling hopper.
Fig. 6 is the curve map of the example of the variations in temperature of the resin particle represented in cooling hopper.
Fig. 7 is the curve map of the example of the variations in temperature of the resin particle represented in cooling hopper.
Fig. 8 is the curve map of the example of the variations in temperature of the resin particle represented in cooling hopper.
Fig. 9 is the figure of the structure represented near the airborne hopper involved by variation.
Figure 10 is the figure of the structure representing pretreatment unit involved by variation and injection (mo(u)lding) machine.
Label declaration
1-pretreatment unit, 2-injection (mo(u)lding) machine, 10-front hopper, 20-heated hopper, 24-the 1st transports hopper, 30-heat drying mechanism, 31-gas-heated pipe, 32-pressure fan, 33-heat exchanger, 40-cools hopper, 44-the 2nd transports hopper, 50-cooling body, 51-gas cooling tube, 52-pressure fan, 53-heat exchanger, the airborne hopper of 60-, 61-supply pipe, 62-open and close valve, 63-outlet, 64-temperature sensor, 65-band heater, 70-control part, 81-the 1st transports pipe, 82-the 2nd transports pipe, 83-the 3rd transports pipe, 84-the 1st suction tube, 85-the 2nd suction tube, 86-the 3rd suction tube, 87-collecting fitting, 88-pressure fan, 89-nitrogen gas supply portion, 100-naval stores manufacturing system, 210-injection device 211-cylinder body, 212-screw rod, 213-supply port, 214-injection nozzle, 215-heater, 216, 217, 225, 226, 227-motor, 220-mold closing mechanism, 230-control part, 290-die device, 291-cover half, 292-dynamic model, 293-cavity space.
Detailed description of the invention
Below, with reference to accompanying drawing, preferred forms of the present invention is described.
< 1. is about apparatus structure >
Fig. 1 is the figure of the structure representing pretreatment unit 1 involved by one embodiment of the present invention and injection (mo(u)lding) machine 2.Pretreatment unit 1 carries out the pretreatment such as drying to the moulding material be made up of powder or plastochondria and resin particle, and is supplied to injection (mo(u)lding) machine 2 by the resin particle after process.Injection (mo(u)lding) machine 2 is expelled to mould 209 after making the resin particle melting supplied from pretreatment unit 1, and by making resin solidify and shaping naval stores in mould 209.In addition, in FIG, the structure depicting injection (mo(u)lding) machine 2 is simplified.Pretreatment unit 1 and injection (mo(u)lding) machine 2 are connected as shown in Figure 1, thus, form single naval stores manufacturing system 100.
The pretreatment unit 1 of present embodiment using resin particle used for optical part as handling object.The resin particle supplied from pretreatment unit 1 is by shaping injection (mo(u)lding) machine 2 and become the transparent optics such as light guide plate.Transparent optics shaping in, prevent the variable color because of oxidation, this becomes the quality management project be even more important.But the resin particle becoming handling object in the present invention may not be defined in resin particle used for optical part.
As shown in Figure 1, the pretreatment unit 1 of present embodiment possesses front hopper 10, heated hopper 20, heat drying mechanism 30, cooling hopper 40, cooling body 50, airborne hopper 60 and control part 70.
Front hopper 10 is the resin particle before drying is lodged in inner container.Front hopper 10 has: the hopper main body 11 of bottomed cylindrical, and it has opening 13 on top; And cap 12, be placed in the top of hopper main body 11.The space for accumulating resin particle is provided with in the inside of hopper main body 11.Cap 12 closes the opening 13 on the top of hopper main body 11.Further, if take off cap 12, then the top of hopper main body 11 is opened, and via opening 13, resin particle can be put into the inside of hopper main body 11.
Heated hopper 20 is than the downstream of front hopper 10 closer to transport path, and than the upstream side of cooling hopper 40 closer to transport path, resin particle is lodged in inner container (heating container).As shown in Figure 1, heated hopper 20 there is roughly cylindric sidewall 21, from the bottom of sidewall 21 along with the funnelform bottom 22 of shrinking gradually downward, the top plate portion 23 covering the top of heated hopper 20.Be provided with in the inside of heated hopper 20 for accumulating resin particle and making the space of its heat drying.
The 1st conveyance hopper 24 less than heated hopper 20 is provided with on the top of heated hopper 20.1st conveyance hopper 24 is the container of temporarily accommodating resin particle when supplying resin particle to heated hopper 20.Front hopper 10 and the 1st conveyance hopper 24 are connected to each other via the 1st conveyance pipe 81.Further, the bottom of the 1st conveyance hopper 24 is provided with input port 241 to be opened/closed.If open input port 241, then the resin particle accumulated in the 1st conveyance hopper 24 is put to the inside of heated hopper 20.
Heat drying mechanism 30 is the mechanism for making its drying by heating the resin particle that accumulates in heated hopper 20.Heat drying mechanism 30 has heated air and the gas-heated pipe 31 making it circulate.One end of gas-heated pipe 31 is connected to the suction port 25 be arranged on the sidewall 21 of heated hopper 20.The other end of gas-heated pipe 31 is connected to the blow-off outlet 26 of the inside being configured in heated hopper 20.Further, midway, the path of gas-heated pipe 31 is provided with pressure fan 32 and heat exchanger 33.
If make pressure fan 32 action, then as used represented by arrow A 1 in Fig. 1, in gas-heated pipe 31, produce the air-flow from suction port 25 towards blow-off outlet 26.The gas being inhaled into gas-heated pipe 31 from heated hopper 20 is become hot blast by heating heat exchanger 33.Then, this hot blast is blown from blow-off outlet 26 to the inside of heated hopper 20.In addition, can also be provided with in midway, the path of gas-heated pipe 31 absorber that absorption is included in the moisture in gas.
The hot blast blown out from blow-off outlet 26 by after the gap that lodges in the resin particle of heated hopper 20 inside, diffusion heated hopper 20 in.Thus, resin particle is heated, and moisture evaporates from resin particle, and resin particle is dry.That is, in heated hopper 20, the gas of diffusion absorbs moisture from resin particle.Further, the gas of moisture absorption by after suction port 25, is inhaled into gas-heated pipe 31 from heated hopper 20 again.
Cooling hopper 40 be than the downstream of heated hopper 20 closer to transport path, and than the upstream side of airborne hopper 60 closer to transport path, resin particle is lodged in the container (cooled containers) of inside.As shown in Figure 1, cool hopper 40 there is roughly cylindric sidewall 41, from the bottom of sidewall 41 along with the funnelform bottom 42 of shrinking gradually downward and the top plate portion 43 on top covering cooling hopper 40.Be provided with for accumulating resin particle and making the space that its temperature reduces in the inside of cooling hopper 40.
The 2nd conveyance hopper 44 less than cooling hopper 40 is provided with on the top of cooling hopper 40.2nd conveyance hopper 44 is the container of temporarily accommodating resin particle when supplying resin particle to cooling hopper 40.Heated hopper 20 and the 2nd conveyance hopper 44 are connected to each other via the 2nd conveyance pipe 82.Further, the bottom of the 2nd conveyance hopper 44 is provided with input port 441 to be opened/closed.If input port 441 is opened, then the resin particle accumulated in the 2nd conveyance hopper 44 is put to the inside of cooling hopper 40.
Cooling body 50 is the mechanism of the temperature for reducing the resin particle accumulated in cooling hopper 40.Cooling body 50 has refrigerating gas and the gas cooling tube 51 making it circulate.One end of gas cooling tube 51 is connected to the suction port 45 on the sidewall 41 being arranged on cooling hopper 40.The other end of gas cooling tube 51 is connected to the blow-off outlet 46 of the inside being arranged on cooling hopper 40.Further, midway, the path of gas cooling tube 51 is provided with pressure fan 52 and heat exchanger 53.
If make pressure fan 52 action, then as used represented by arrow A 2 in Fig. 1, in gas cooling tube 51, produce the air-flow from suction port 45 towards blow-off outlet 46.Be inhaled into the gas of gas cooling tube 51 by heat exchanger 53 from cooling hopper 40, thus captured heat by the cold-producing medium of heat exchanger 53.Thus, the temperature of gas reduces.Then, the gas of low temperature is from blow-off outlet 46 to the inside blowout of cooling hopper 40.
From blow-off outlet 46 blow out gas by accumulate in cooling hopper 40 inside resin particle gap after, cooling hopper 40 in spread.Thus, the temperature of resin particle reduces.Further, the gas that temperature rises by the contact with resin particle, from cooling hopper 40 by after suction port 45, is inhaled into gas cooling tube 51 again.
In addition, the temperature of the cold-producing medium of heat exchanger 53 can be set as arbitrary temperature according to the instruction from control part 70.If regulate the temperature of cold-producing medium, then can regulate the cooling velocity of the resin particle carried out based on cooling body 50.
Airborne hopper 60 is positioned at than the downstream of cooling hopper 40 closer to transport path, and is positioned at the top of injection (mo(u)lding) machine 2.The inside of airborne hopper 60 is provided with the space for accumulating cooled resin particle.Cooling hopper 40 and airborne hopper 60 are connected to each other via the 3rd conveyance pipe 83.Further, airborne hopper 60 and injection (mo(u)lding) machine 2 are connected to each other via supply pipe 61.Supply pipe 61 is provided with open and close valve 62.If open open and close valve 62, then the resin particle accumulating in the inside of airborne hopper 60 after by supply pipe 61, is fed into the cylinder body 211 of injection (mo(u)lding) machine 2.
Further, supply pipe 61 is provided with outlet 63 and temperature sensor 64.Outlet 63 via check-valves 631 with the ft connection of supply pipe 61.Check-valves 631 only allows that gas passes through from the interior of supply pipe 61.Thus if the internal pressure of supply pipe 61 becomes higher than external pressure, then gas is discharged from the interior of supply pipe 61.Further, the temperature of the gas in supply pipe 61 measured by temperature sensor 64 near the supply port of injection (mo(u)lding) machine 2.The measurement result of temperature sensor 64 is sent to control part 70.
On the top of the 1st conveyance hopper 24, the 2nd conveyance hopper 44 and airborne hopper 60, be connected to the 1st suction tube 84, the 2nd suction tube 85 and the 3rd suction tube 86.Further, the other end of the 1st suction tube 84, the 2nd suction tube 85 and the 3rd suction tube 86 is connected to 1 collecting fitting 87.In addition, the other end of collecting fitting 87 is connected to the 1st conveyance pipe 81.Further, midway, the path of collecting fitting 87 is provided with pressure fan 88.
If make pressure fan 88 action, then as used represented by arrow A 3 in Fig. 1, in the inside of the 1st suction tube 84, the 2nd suction tube 85, the 3rd suction tube 86 and collecting fitting 87, produce from the 1st conveyance hopper 24, the 2nd conveyance hopper 44 and airborne hopper 60 by transporting the air-flow of pipe 81 after pressure fan 88 towards the 1st.Thus, as used represented by arrow A 4, A5, A6 in Fig. 1, produce from front hopper 10 by transporting the air-flow of hopper 24 after the 1st conveyance pipe 81 towards the 1st, produce from heated hopper 20 by after the 2nd conveyance pipe 82 towards the air-flow of the 2nd conveyance hopper 44, and produce from after cooling hopper 40 transports pipe 83 by the 3rd towards the air-flow of airborne hopper 60.By these air-flows, resin particle is by pneumatic conveyance.
In addition, at connecting portion, the 2nd conveyance hopper 44 and the connecting portion of the 2nd suction tube 85 and the connecting portion of airborne hopper 60 and the 3rd suction tube 86 of the 1st conveyance hopper 24 and the 1st suction tube 84, perforated metal (omitting diagram) is respectively arranged with.Perforated metal is provided with multiple through hole less than each resin particle.Thus, allow passing through of gas, and prevent resin particle from flowing into each suction tube 84,85,86.
Further, this pretreatment unit 1 has multiple nitrogen gas supply portions 89 of inside supply inactive gas to the pipe arrangement in device and hopper and nitrogen.As shown in Figure 1, in the present embodiment, be in advance on hopper 10, heated hopper 20, gas-heated pipe 31, cooling hopper 40, gas cooling tube 51, supply pipe 61, the 1st conveyance pipe 81, the 2nd conveyance pipe 82, the 3rd conveyance pipe 83 and collecting fitting 87, be connected to nitrogen gas supply portion 89.
Nitrogen gas supply portion 89 is in a ratio of the nitrogen through super-dry of malleation to above-mentioned each portion supply and external air pressure.Therefore, if make multiple nitrogen gas supply portion 89 action, then nitrogen is filled in the whole transport path (arriving the path of supply pipe 61 from front hopper 10 after the 1st conveyance pipe 81, the 1st conveyance hopper 24, heated hopper 20, the 2nd conveyance pipe 82, the 2nd conveyance hopper 44, cooling hopper 40, the 3rd conveyance pipe 83 and airborne hopper 60) of the resin particle in pretreatment unit 1.Further, the transport path of the resin particle in pretreatment unit 1 becomes malleation compared with the environmental pressure of outside.Thus, extraneous gas can be suppressed to invade in transport path.Its result, the oxidation of the resin particle in pretreatment unit 1 is inhibited.
But the position in nitrogen gas supply portion 89 and quantity are not limited to the example of Fig. 1.
Fig. 2 is the figure of the structure representing injection (mo(u)lding) machine 2 than Fig. 1 in more detail.This injection (mo(u)lding) machine 2 by the cavity space 293 of liquid resin filling in die device 290, and by making filled resin solidification and shaping naval stores.As shown in Figure 2, injection (mo(u)lding) machine 2 possesses the mold closing mechanism 220 of the injection device 210 of liquid resin filling in die device 290, the mold closing carrying out die device 290, matched moulds, die sinking.Die device 290 has cover half 291 and dynamic model 292.The cavity space 293 corresponding with the shape of naval stores is formed between cover half 291 with dynamic model 292.
The screw rod 212 that injection device 210 has the cylindrical container of horizontal-extending and cylinder body 211 and is flatly configured in cylinder body 211.Supply port 213 is provided with on the rear portion of cylinder body 211.Resin particle pretreated in pretreatment unit 1 is fed into the inside of cylinder body 211 by supply port 213.On the other hand, the leading section of cylinder body 211 is provided with injection nozzle 214.Further, the heater 215 as heating source is provided with in the periphery of cylinder body 211.
Screw rod 212 is arranged to rotatable and free to advance or retreat in cylinder body 211.Injection device 210 has the measure motor 216 for making screw rod 212 rotate, and for making the injection motor 217 advanced before and after screw rod 212.If drive measure motor 216 rotate to make screw rod 212, then resin particle along screw rod 212 spiral helicine groove forwards (injection nozzle 214 side) transported.While resin particle is forwards transported, the melting gradually by the heat from heater 215.Its result, resin particle becomes liquid resin.Further, along with liquid resin is transported to the front of screw rod 212 and near the leading section being accumulated in cylinder body 211, screw rod 212 retreats and away from injection nozzle 214.
In this condition, if by driving injection motor 217 to make screw rod 212 advance, then the liquid resin being accumulated in the front of screw rod 212 is filled in the cavity space 293 in die device 290 via injection nozzle 214.Afterwards, by driving injection motor 217 further, screw rod 212 is advanced further.Thus, the resin in cavity space 293 is applied in pressure, causes resin in shortage to be supplemented because of contraction.
Mold closing mechanism 220 possesses the fixation clip 221 installed for cover half 291, the movable pressure plate 222 installed for dynamic model 292, makes the toggle mechanism 223 of movable pressure plate 222 movement.Mold closing, matched moulds and die sinking is carried out by making movable pressure plate 222 retreat along connecting rod 224 relative to fixation clip 221.Further, mold closing mechanism 220 has: matched moulds motor 225, and movable pressure plate 222 is moved; Eject motor 226, make to be assembled in before and after the knock pin on movable pressure plate 222 and advance; And the thick motor 227 of mould, according to the thickness of die device 290, movable pressure plate 222 and toggle mechanism 223 are moved.
By driving matched moulds motor 225, movable pressure plate 222 is advanced, thus carry out the mold closing of die device 290.After mold closing terminates, the motive force produced based on matched moulds motor 225 is multiplied by the mold clamping force of toggle multiplying power, carries out matched moulds by mold clamping force.By this matched moulds, between dynamic model 292 and cover half 291, form cavity space 293.The liquid resin being filled in cavity space 293 from injection device 210 solidifies in cavity space 293, becomes naval stores.Afterwards, by driving matched moulds motor 225, movable pressure plate 222 is retreated, thus carry out the die sinking of die device 290.Further, ejecting motor 226 by driving, taking out naval stores from dynamic model 292.
Fig. 3 is the block diagram of the structure of the control system representing pretreatment unit 1 and injection (mo(u)lding) machine 2.Pretreatment unit 1 and injection (mo(u)lding) machine 2 possess the control part 70,230 for controlling each several part action respectively.As shown in Figure 3, the control part 70 of pretreatment unit 1 is electrically connected on above-mentioned pressure fan 32, heat exchanger 33, pressure fan 52, heat exchanger 53, open and close valve 62, temperature sensor 64, pressure fan 88 and multiple nitrogen gas supply portion 89 respectively.The control part 230 of injection (mo(u)lding) machine 2 is electrically connected on multiple motors 216,217,225,226,227 in injection (mo(u)lding) machine 2 and heater 215 respectively.
These control parts 70,230 are such as made up of the computer or microcomputer with the arithmetic processing section such as CPU and memory.Control part 70,230 is according to the program preset or control each part mentioned above action from the input signal of outside.Thus, pretreatment and the injection moulding process of resin particle is carried out.
In addition, the part in above-mentioned multiple control object also can be separated from control part 70,230, and manually operates.
Further, as shown in Figures 1 and 3, the control part 70 of pretreatment unit 1 connects into the control part 230 of injection (mo(u)lding) machine 2 and can communicate each other.Thus, between these control parts 70,230, the data of request signal or necessity can be exchanged each other.Thus, such as, can adjust the action moment of pretreatment unit 1 and the action moment of injection (mo(u)lding) machine 2 each other, in order to avoid produce stagnation or the deficiency of resin particle.Further, as hereinafter described, in the present embodiment, the measurement result obtained from temperature sensor 64 is sent to the control part 230 of injection (mo(u)lding) machine 2 by the control part 70 of pretreatment unit 1.Further, the control part 230 of injection (mo(u)lding) machine 2 regulates the output of heater 215 according to the measurement result received.
< 2. is about handling process >
Then, the pretreatment of the resin particle in above-mentioned naval stores manufacturing system 100 and the flow process of injection moulding process are described.Fig. 4 is the flow chart of an example of the process represented in naval stores manufacturing system 100.
In this naval stores manufacturing system 100, when manufacturing naval stores, first, from multiple nitrogen gas supply portions 89 of pretreatment unit 1, supply nitrogen.Thus, nitrogen (step S1) is filled to the whole transport path of the resin particle in pretreatment unit 1.Then, take off the cap 12 of front hopper 10, and in hopper main body 11, drop into resin particle (step S2) via the opening 13 of hopper main body 11.If the input of resin particle terminates, then again load cap 12, thus close the opening 13 of hopper main body 11.
Then, make pressure fan 88 action, produce in the inside of the 1st conveyance pipe 81, the 2nd conveyance pipe 82 and the 3rd conveyance pipe 83 to make the air-flow of nitrogen.The resin particle of discharging from the bottom of front hopper 10 is transported to the 1st conveyance hopper 24 by the 1st conveyance pipe 81 by pneumatic.Further, the resin particle accumulated in the 1st conveyance hopper 24 is opened by input port 241 and is put in heated hopper 20 (step S3).
Put into resin particle in heated hopper 20 by heat drying mechanism 30 by heat drying (step S4).Specifically, by making pressure fan 32 and heat exchanger 33 action, the hot blast of nitrogen is fed into the inside of heated hopper 20 from blow-off outlet 26.Thus, resin particle is heated, thus moisture evaporates from resin particle, and the moisture of resin particle reduces.
Discharged by the bottom of the resin particle of heat drying from heated hopper 20, and be transported to the 2nd conveyance hopper 44 by the 2nd conveyance pipe 82 by pneumatic.Further, the resin particle accumulated in the 2nd conveyance hopper 44 is opened by input port 441 and is put in cooling hopper 40 (step S5).
Put into cooling hopper 40 in resin particle by cooling body 50 be cooled (step S6).Specifically, by making pressure fan 52 and heat exchanger 53 action, the nitrogen of low temperature is fed into the inside of cooling hopper 40 from blow-off outlet 46.Thus, the temperature of resin particle reduces.
As mentioned above, the transport path of the resin particle in pretreatment unit 1 is filled with nitrogen.Therefore, in pretreatment unit 1, the oxygen content in resin particle reduces gradually, and the content of the nitrogen replaced in resin particle increases gradually.Especially, the saturated content of the nitrogen in the lower then resin particle of the temperature of resin particle is more.Therefore, in cooling hopper 40, if make the temperature of resin particle reduce, then the content of the nitrogen in resin particle can be made to increase further.Its result, when injection moulding described later, can suppress to produce variable color because of oxidation.
But the saturated content of the nitrogen in the lower then resin particle of pressure is around fewer.Thus, make if suppose the pressure in cooling hopper 40 and temperature together reduce, then the saturated content of the nitrogen in resin particle cannot be made to increase fully.Therefore, in this pretreatment unit 1, by from nitrogen gas supply portion 89 sustainable supply nitrogen, thus the pressure in cooling hopper 40 is maintained constant, and the temperature of resin particle is reduced.Thereby, it is possible to make in resin particle containing more substantial nitrogen.
Further, in step s 6, compared with the environmental pressure of outside, the pressure in cooling hopper 40 becomes malleation.Thus, the content of the nitrogen in resin particle improves further.But, when injection moulding, in order to prevent producing bubble because of decompression, preferably the pressure in cooling hopper 40 is set to the pressure lower than the injection pressure of the resin in injection (mo(u)lding) machine 2.Further, the pressure preferably in cooling hopper 40 is less than the 1MPa of the object becoming gases at high pressure safety law, in order to avoid the free degree of restraint device design.Specifically, as long as the pressure in the cooling hopper 40 in step S6 is set to the pressure omiting high level than environmental pressure.
Fig. 5 is the curve map of the example of the variations in temperature of the resin particle represented in cooling hopper 40.The transverse axis of Fig. 5 represents the time after starting that cools.The longitudinal axis of Fig. 5 represents the temperature of resin particle.Further, the variations in temperature of the resin particle of present embodiment in Fig. 5, is represented with solid line, as comparative example, the variations in temperature of resin particle when representing that resin particle is cooled naturally by environment temperature with double dot dash line.
In Figure 5, the temperature Tb before cooling is the temperature after the heat drying of the resin particle becoming handling object, such as, be set to 100 DEG C ~ 150 DEG C.On the other hand, cooled temperature Ta is the temperature for the nitrogen content in resin particle being set to desired value, such as, is set to the temperature slightly higher than the environment temperature Te of device outside.Specifically, cooled temperature Ta is such as set to less than 60 DEG C, in order to the content improving nitrogen further also can be set to less than 40 DEG C.
As shown in Figure 5, in step s 6, at least in the starting stage of cooling, the temperature of the resin particle in cooling hopper 40 is reduced more lentamente than naturally cooling.This can be low by such as the temperature of the cold-producing medium of heat exchanger 53 being set as the temperature of the resin particle before than cooling, and compare the high temperature of outside environment temperature and realize.
So, if make the temperature of resin particle reduce more lentamente than cooling naturally, then can extend during resin particle is high temperature.When high temperature, although the saturated content under the poised state of nitrogen in resin particle is lower, compared with during low temperature, produce nitrogen molecular to the dissolving of resin particle and diffusion more obvious.Thus, during extending high temperature, can make, containing enough nitrogen in resin particle, the saturated content of resin particle can be improved simultaneously.Thereby, it is possible to increase the content of the inactive gas in cooled resin particle further.Its result, when injection moulding described later, can suppress to produce variable color because of oxidation further.
Further, as shown in Figure 5, in the present embodiment, along with the process of time, the temperature of the time per unit of resin particle reduces amplitude and increases.Thereby, it is possible to while suppressing the total time needed for cooling resin particle, can extend during resin particle is high temperature.Thus, can make to contain enough inactive gas in resin particle, make the temperature of resin particle reduce simultaneously, and can also the processing time be shortened.
If resin particle is cooled to temperature Ta, then cooled resin particle is discharged from the bottom of cooling hopper 40, and is transported to airborne hopper 60 (step S7) by the 3rd conveyance pipe 83 by pneumatic.Further, according to the requirement of the control part 230 from injection (mo(u)lding) machine 2, the control part 70 of pretreatment unit 1 opens open and close valve 62.Thus, in the cylinder body 211 of injection (mo(u)lding) machine 2, resin particle (step S8) is supplied by supply pipe 61 from airborne hopper 60.
Now, by supplying nitrogen from nitrogen gas supply portion 89, compared with the environmental pressure of outside, the pressure in airborne hopper 60 becomes malleation.Further, externally continue to discharge nitrogen from the outlet 63 of supply pipe 61 via check-valves 631.Therefore, even if suppose that the cylinder body 211 of gas from injection (mo(u)lding) machine 2 is to supply pipe 61 adverse current, this gas is also externally discharged from outlet 63.Thus, the gas componant in suppression cylinder body 211 contacts the resin particle in airborne hopper 60.Further, before supplying resin particle to cylinder body 211, the temperature of resin particle can be suppressed to rise.
If resin particle is supplied in cylinder body 211, then the control part 230 of injection (mo(u)lding) machine 2 makes the screw rod 212 in cylinder body 211 rotate.Thus, resin particle moves to injection nozzle 214 side.Further, the resin particle in cylinder body 211 by heating also melting, becomes flowable liquid phase (step S9) by heater 215.
Now, the measurement result of temperature sensor 64 is sent to the control part 230 of injection (mo(u)lding) machine 2 by the control part 70 of pretreatment unit 1.Further, the control part 230 of injection (mo(u)lding) machine 2 carrys out the output of control heater 215 according to the measurement result received.Thus, the temperature of injection nozzle 214 resin particle is nearby controlled to constant.
Specifically, such as, the measurement result of temperature sensor 64 is compared with the target temperature preset, if measurement result is lower than target temperature, then improve the output of heater 215, if measurement result is higher than target temperature, then reduce the output of heater 215.Thus, the melting position stability of the resin particle in cylinder body 211 can be made.Thus, such as, by making resin particle in the dead ahead melting of injection nozzle 214, can shorten more at higher temperature than melt temperature during.Its result, can suppress the variable color produced because of the oxidation of resin further.
In addition, the heater 215 exporting heater that is constant and that only can switch On/Off and replace output variable can also be used.In this case, if the temperature in cylinder body 211 is lower than design temperature, then heater is unlocked, if the temperature in cylinder body 211 is higher than design temperature, then heater is closed.In this case, according to the measurement result of the temperature sensor 64 near supply port 213, the design temperature of the threshold value of the On/Off becoming heater can also be changed.Such as, if the measurement result of temperature sensor 64 is lower than target temperature, then improve the design temperature in cylinder body 211, if the measurement result of temperature sensor 64 is higher than target temperature, then reduce the design temperature in cylinder body 211.Thus, as above-mentioned, the melting position stability of the resin particle in cylinder body 211 can be made.
Then, molten resin by because of before screw rod 212 so that produce pressure and be injected from injection nozzle 214, be filled into the cavity space 293 in die device 290.Further, in this cavity space 293, the shaping naval stores (being transparent optics in the present embodiment) (step S10) by the cooled solidification of resin.When injecting from injection nozzle 214, the content of the nitrogen in resin is also many, therefore not easily produces the oxidation of resin.Thus, the naval stores that variable color is inhibited can be obtained.
In addition, in the above description, according to the flowing of resin particle, operation is illustrated successively, but these operations also can be carried out simultaneously.That is, for a part of resin particle and other resin particles, different operations can be carried out simultaneously, also can process as a whole and continuously.
< 3. variation >
Above, one embodiment of the present invention is illustrated, but the present invention is not limited to above-mentioned embodiment.
Fig. 6 is the curve map of the variations in temperature of the resin particle represented in the cooling hopper 40 involved by a variation.In the example of Fig. 6, at least in the starting stage of cooling, the temperature stage of resin particle reduces.This can such as be realized by open and close heat exchanger 53 discontinuously.Thus, resin particle can be extended and keep high temperature and during constant temperature.Thus, can make, containing enough nitrogen in resin particle, the temperature of resin particle can be made to reduce simultaneously.
In addition, after the resin particle cooling in cooling hopper 40, sometimes directly cannot discharge resin particle from cooling hopper 40.In this case, cooled resin particle can be made in cooling hopper 40 to carry out temperature adjustment and standby.Such as, as the curve map of Fig. 7 and Fig. 8, also can after resin particle be cooled to temperature Ta, make resin particle holding temperature Ta and standby in cooling hopper 40.The maintenance of temperature realizes as thermoregulative mechanism action by making cooling body 50.Thus, the temperature that the temperature of resin particle becomes lower than the temperature Ta as target can be prevented.Thus, resin particle can be discharged with stationary temperature Ta all the time from cooling hopper 40.
Further, from cooling hopper 40 to injection (mo(u)lding) machine 2 cylinder body 211 during, also can control the temperature of resin particle on one's own initiative.Such as, as shown in Figure 9, the band heater 65 as thermoregulative mechanism also can be installed around airborne hopper 60 and supply pipe 61, be maintained the temperature constant of resin particle by the heat of band heater 65.Like this, the temperature of the resin particle of discharging from cooling hopper 40 can be suppressed to reduce in airborne hopper 60 or in supply pipe 61.Thus, the temperature of the resin particle being supplied to cylinder body 211 can be made more stable.Its result, can stably moulding resin product further.In addition, other thermoregulative mechanisms such as warm-air supply mechanism also can be used to replace band heater 65.Further, the thermoregulative mechanism supply around pipe 61, also can arrange the insulation material that made by mineral wool, polyurethane foam or silicon foam etc. to replace band heater 65, by this insulation material, the temperature of resin particle is maintained constant.
Figure 10 is the figure of the structure representing pretreatment unit 1 involved by other variation and injection (mo(u)lding) machine 2.In the example of Fig. 7, cooling hopper 40 is configured in the top of the cylinder body 211 of injection (mo(u)lding) machine 2.Further, cool hopper 40 not to be connected via other hoppers with cylinder body 211.Cooling hopper 40 is connected via supply pipe 61 with cylinder body 211, and this supply pipe 61 is provided with outlet 63.Thus, the resin particle of cooling in cooling hopper 40 can promptly be supplied to cylinder body 211 from cooling hopper 40.Further, compared with above-mentioned embodiment, pretreatment unit 1 can be made to be configured by the quantity of minimizing hopper compacter.
Further, in the above-described embodiment, in different hoppers, heat drying and the cooling of resin particle has been carried out, but, these process also can be carried out in single hopper.That is, also heat drying mechanism 30 can be connected with 1 hopper with cooling body 50, carry out the process from heat drying to cooling in the inside of this 1 hopper.
Further, in the above-described embodiment, by hot blast, the resin particle in heated hopper 20 is heated, but, other heater meanses such as band heater also can be utilized to carry out heated resin particle.
Further, in the above-described embodiment, nitrogen is employed as inactive gas, but, as inactive gas of the present invention, as long as be included in the gas of the oxidation that can suppress resin particle in resin particle.Such as, also carbon dioxide or argon gas can be used as inactive gas, thus replace nitrogen.
Further, the example that the resin particle used in the above-described embodiment is moulding material.As moulding material, the material beyond resin particle also can be used.
Further, about the detailed structure of pretreatment unit and injection (mo(u)lding) machine, the structure shown in each figure of the application can be also different from.
Further, each important document occurred in above-mentioned embodiment or variation also can suitably combine in the scope not producing contradiction.
Claims (29)
1. a preprocess method for moulding material, it is the preprocess method of the moulding material to forming machine supply, and the preprocess method of described moulding material has:
Operation a), makes it dry by hot briquetting material;
Operation b), after described operation is a), in the container being filled with inactive gas, the temperature of moulding material is reduced; And
Operation c), at described operation b) after, to described forming machine supply moulding material,
At described operation b) in, the pressure in described container is maintained constant, and the temperature of moulding material is reduced.
2. the preprocess method of moulding material according to claim 1, wherein,
At described operation b) in, the temperature of moulding material is reduced more lentamente than naturally cooling.
3. a preprocess method for moulding material, it is the preprocess method of the moulding material to forming machine supply, and the preprocess method of described moulding material has:
Operation a), makes it dry by hot briquetting material;
Operation b), after described operation is a), in the container being filled with inactive gas, the temperature of moulding material is reduced; And
Operation c), at described operation b) after, to described forming machine supply moulding material,
At described operation b) in, the temperature of moulding material is reduced more lentamente than naturally cooling.
4. the preprocess method of the moulding material according to Claims 2 or 3, wherein,
At described operation b) in, along with the process of time, the temperature of the time per unit of moulding material reduces amplitude and increases.
5. the preprocess method of the moulding material according to Claims 2 or 3, wherein,
At described operation b) in, the temperature stage of moulding material is reduced.
6. the preprocess method of moulding material according to any one of claim 1 to 3, wherein,
At described operation b) in, make the temperature of moulding material be reduced to less than 60 DEG C.
7. the preprocess method of moulding material according to any one of claim 1 to 3, wherein,
Described operation b) in described container in pressure ratio described in environmental pressure outside container high.
8. the preprocess method of moulding material according to claim 7, wherein,
Described operation b) in described container in pressure ratio described in the injection pressure of moulding material in forming machine low.
9. the preprocess method of moulding material according to claim 8, wherein,
Described operation b) in described container in pressure be less than 1MPa.
10. the preprocess method of moulding material according to any one of claim 1 to 3, wherein,
At described operation b) after, and at described operation c) before, also have and the temperature of moulding material is maintained constant operation.
The preprocess method of 11. moulding materials according to any one of claim 1 to 3, wherein,
The preprocess method of described moulding material also has operation d), at this operation d) in, measure to the temperature near the supply port of described forming machine, and control the temperature being in injection nozzle moulding material nearby in described forming machine according to measured temperature.
The preprocess method of 12. moulding materials according to any one of claim 1 to 3, wherein,
Using moulding material used for optical part as handling object.
The pretreatment unit of 13. 1 kinds of moulding materials, it is the pretreatment unit of the moulding material to forming machine supply, and the pretreatment unit of described moulding material possesses:
Cooled containers, by by heating, dried moulding material is contained in inside;
Gas supply part, is filled in the inside of described cooled containers by inactive gas; And
Cooling body, makes the temperature of the moulding material be contained in described cooled containers reduce,
By from described gas supply part supply inactive gas, thus the pressure in described cooled containers is maintained constant, and described cooling body makes the temperature of moulding material reduce.
The pretreatment unit of 14. moulding materials according to claim 13, wherein,
Described cooling body makes the temperature of moulding material reduce more lentamente than naturally cooling.
The pretreatment unit of 15. 1 kinds of moulding materials, it is the pretreatment unit of the moulding material to forming machine supply, and the pretreatment unit of described moulding material possesses:
Cooled containers, by by heating, dried moulding material lodges in inside;
Gas supply part, is filled in the inside of described cooled containers by inactive gas; And
Cooling body, makes the temperature of the moulding material lodged in described cooled containers reduce,
Described cooling body makes the temperature of moulding material reduce more lentamente than naturally cooling.
16. according to claim 13 to the pretreatment unit of the moulding material according to any one of 15, wherein,
The pretreatment unit of described moulding material also possesses:
Heating container, than the upstream side of described cooled containers closer to transport path, lodges in inside by moulding material;
Heat drying mechanism, makes it dry by heating the moulding material that lodges in described heating container; And
Conveyance pipe, from described heating container to described cooled containers conveyance moulding material.
17. according to claim 13 to the pretreatment unit of the moulding material according to any one of 15, wherein,
The pretreatment unit of described moulding material also has outlet, this outlet at described cooled containers or between other containers and described forming machine in the downstream of described cooled containers, and and ft connection,
The environmental pressure of pressure ratio outside of other containers described in described cooled containers or the downstream that is positioned at described cooled containers is high.
18. according to claim 13 to the pretreatment unit of the moulding material according to any one of 15, wherein,
The pretreatment unit of described moulding material also has thermoregulative mechanism, and the temperature by the cooled moulding material of described cooling body is maintained constant by this thermoregulative mechanism.
19. according to claim 13 to the pretreatment unit of the moulding material according to any one of 15, wherein,
Using moulding material used for optical part as handling object.
20. 1 kinds of injection (mo(u)lding) machines, after making moulding material melting, be expelled in mould, described injection (mo(u)lding) machine has:
Cylinder body;
Supply port, the moulding material after pretreated to described cylinder body supply;
Heater, in described cylinder body, makes moulding material melting;
Injection nozzle, from the moulding material of described cylinder body injection melting; And
Screw rod, in described cylinder body, to described injection nozzle side conveyance moulding material,
In the container of moulding material containing the drying by heating, by the supply of inactive gas, the pressure in described container is maintained constant, and the moulding material that temperature is reduced is supplied to described supply port.
21. injection (mo(u)lding) machines according to claim 20, wherein,
In described container, make temperature be supplied to described supply port than naturally cooling the moulding material reduced more lentamente.
22. 1 kinds of injection (mo(u)lding) machines, after making moulding material melting, be expelled in mould, described injection (mo(u)lding) machine has:
Cylinder body;
Supply port, the moulding material after pretreated to described cylinder body supply;
Heater, in described cylinder body, makes moulding material melting;
Injection nozzle, from the moulding material of described cylinder body injection melting; And
Screw rod, in described cylinder body, to described injection nozzle side conveyance moulding material,
Containing the moulding material of the drying by heating and being filled with in the container of inactive gas, temperature is made to be supplied to described supply port than naturally cooling the moulding material reduced more lentamente.
23. injection (mo(u)lding) machines according to any one of claim 20 to 22, wherein,
Temperature in described container makes the moulding material being maintained stationary temperature be supplied to described supply port after reducing.
24. injection (mo(u)lding) machines according to any one of claim 20 to 22, wherein,
Described injection (mo(u)lding) machine, according to the temperature near described supply port, controls the temperature being in described injection nozzle moulding material nearby in described cylinder body.
25. 1 kinds of injection moulding methods, after making moulding material melting, be expelled in mould, described injection moulding method has:
Operation x), the moulding material after pretreated to cylinder body supply via supply port;
Operation y), in described cylinder body, make moulding material melting;
Operation z), inject from the injection nozzle of described cylinder body the moulding material be melted,
At described operation x) in, in the container of moulding material containing the drying by heating, by the supply of inactive gas, the pressure in described container is maintained constant, and the moulding material that temperature is reduced supplies to described cylinder body via described supply port.
26. injection moulding methods according to claim 25, wherein,
At described operation x) in, in described container, make temperature than naturally cooling the moulding material reduced more lentamente via described supply port to described cylinder body supply.
27. 1 kinds of injection moulding methods, after making moulding material melting, be expelled in mould, described injection moulding method has:
Operation x), the moulding material after pretreated to cylinder body supply via supply port;
Operation y), in described cylinder body, make moulding material melting;
Operation z), inject from the injection nozzle of described cylinder body the moulding material be melted,
At described operation x) in, containing the moulding material of the drying by heating and being filled with in the container of inactive gas, make temperature than naturally cooling the moulding material reduced more lentamente via described supply port to described cylinder body supply.
28. injection moulding methods according to any one of claim 25 to 27, wherein,
At described operation x) in, the temperature in described container makes the moulding material being maintained stationary temperature supply to described cylinder body via described supply port after reducing.
29. injection moulding methods according to any one of claim 25 to 27, wherein,
At described operation y) in, according to the temperature near described supply port, control the temperature being in described injection nozzle moulding material nearby in described cylinder body.
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| JP2014136312 | 2014-07-01 | ||
| JP2014-136312 | 2014-07-01 | ||
| JP2015109397A JP6567879B2 (en) | 2014-07-01 | 2015-05-29 | Molding material pre-processing method, pre-processing apparatus, and injection molding method |
| JP2015-109397 | 2015-05-29 |
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| CN1332076A (en) * | 2000-06-14 | 2002-01-23 | 佳能株式会社 | Foaming shaping method and apparatus |
| CN1398707A (en) * | 2001-07-02 | 2003-02-26 | 佳能株式会社 | Resin material feeding method and device for injecting and molding machine and foamed produst |
| JP2004050415A (en) * | 2002-07-16 | 2004-02-19 | Sumitomo Heavy Ind Ltd | Injection device |
| CN101733860A (en) * | 2008-11-04 | 2010-06-16 | 株式会社川田 | Powder drying method and powder drying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332076A (en) * | 2000-06-14 | 2002-01-23 | 佳能株式会社 | Foaming shaping method and apparatus |
| CN1398707A (en) * | 2001-07-02 | 2003-02-26 | 佳能株式会社 | Resin material feeding method and device for injecting and molding machine and foamed produst |
| CN1706621A (en) * | 2001-07-02 | 2005-12-14 | 佳能株式会社 | Method and apparatus for supplying a resin material to an injection molding machine |
| JP2004050415A (en) * | 2002-07-16 | 2004-02-19 | Sumitomo Heavy Ind Ltd | Injection device |
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