CN105690812A - Online deep-cooling modification device of high molecular material injection molding equipment - Google Patents
Online deep-cooling modification device of high molecular material injection molding equipment Download PDFInfo
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- CN105690812A CN105690812A CN201610149595.6A CN201610149595A CN105690812A CN 105690812 A CN105690812 A CN 105690812A CN 201610149595 A CN201610149595 A CN 201610149595A CN 105690812 A CN105690812 A CN 105690812A
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- cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
- B29C2071/027—Tempering, i.e. heating an object to a high temperature and quenching it
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses an online deep-cooling modification device of high molecular material injection molding equipment. The device comprises an injection molding device and a deep-cooling modification device, wherein the deep-cooling modification device comprises a conveying mechanism, a deep-cooling device box body and a liquid nitrogen storage tank; the conveying mechanism is arranged at the bottom of the deep-cooling device box body, the deep-cooling device box body comprises a cooling room, a deep-cooling insulating room and a tempering room, movable deep-cooling device box covers are arranged at two ends of the deep-cooling device box body, movable insulating partition plates are arranged between the cooling room and the deep-cooling insulating room and between the deep-cooling insulating room and the tempering room, and the liquid nitrogen storage tank is separately connected with the cooling room and the deep-cooling insulating room in a communication manner; the cooling room is used for temperature reduction by deep cooling, the insulting room is used for insulation by deep cooling, and the tempering room is used for temperature rise and tempering insulation after deep cooling. Corresponding treatment schemes are provided from the following three aspects at the same time: cooling, structural modification and stress elimination, so that the mechanical property, the wear resistance and the dimensional stability of a high molecular material workpiece are improved.
Description
Technical field
The present invention relates to technical field of high polymer material preparation, be specifically related to the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device。
Background technology
Macromolecular material refers to and can serve as structural material, can bear mechanical stress and the macromolecular material used in harsher physicochemical environment, be mainly used in the auxiliary equipment of the industries such as household electrical appliances, electronics, automobile, communication in bigger temperature range。2011, whole world macromolecular material demand was about 9,500,000 tons, and wherein Chinese market demand is 2,700,000 tons, and keeps the growth rate of 5%-10%。Visible, macromolecular material consumption in daily life is widely。
Injection mo(u)lding is a kind of polymer material molding method injecting molding of holding concurrently, and it, by a certain temperature, by the plastic material that helical screw agitator melts completely, injects die cavity with high pressure, after cooled solidification, and the method obtaining products formed。The advantage of injection molding forming method is that speed of production is fast, efficiency is high, operation can realize automatization, designs and varieties are many, shape can go from the simple to the complex, size can be descending, product easily updates, and the product that energy forming shape is complicated, injection mo(u)lding is applicable to the processing and forming fields such as a large amount of productions and complex-shaped product。
Constantly development along with modern industrial technology, the performance of material is had higher requirement, the present age, one big research tendency main manifestations of material was, substantially not changing, its performance is improved on the basis of existing traditional material composition, thus effectively improving utilization rate and the response rate of resource, give full play to the potentiality of material。Subzero treatment technology is as cryogenic technique application in material, it is possible to be effectively improved the wearability of material, dimensional stability and comprehensive mechanical property, in widespread attention in recent years。Studies have found that subzero treatment can improve intensity and the elongation percentage of nylon material simultaneously, but traditional macromolecular material subzero treatment is to have carried out for being stabilized to the product of room temperature after injection mo(u)lding, so that subzero treatment effect becomes apparent from, consider subzero treatment link to be placed in injection moulding process carry out such that it is able to realize plastics uniformly cool down, molecular structure adjustment, the function such as release stress。
Therefore, need to provide the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device, by online mode, the macromolecular material of injection mo(u)lding is carried out subzero treatment, molecular structure is combined tightr, microstructure balances in order more, thus improving the performances such as the mechanical property of macromolecular material, wearability and dimensional stability。
Summary of the invention
The technical problem to be solved in the present invention is to provide the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device, for traditional macromolecular material injection-moulding device, a set of deep cooling reforming apparatus with tempering function is installed, can realize the product after the injection moulding demoulding is carried out online subzero treatment in time, thus improving the mechanical property of macromolecular material product, wearability and dimensional stability。
For solving above-mentioned technical problem, the present invention adopts following technical proposals:
A kind of online deep cooling reforming apparatus of macromolecular material injection-moulding device, including injection molding apparatus and deep cooling reforming apparatus, described deep cooling reforming apparatus includes connecting gear, cryogenic system casing and liquid nitrogen storage tank, described connecting gear is arranged at cryogenic system box bottom, described cryogenic system casing includes cooling room, deep cooling moist closet and reversing chamber, the two ends of described cryogenic system casing are provided with moveable cryogenic system case lid, it is provided with moveable thermal-insulation baffle plate between described cooling room and deep cooling moist closet and between deep cooling moist closet and reversing chamber, described liquid nitrogen storage tank is connected with cooling room and deep cooling moist closet respectively。
Preferably, the top of described cooling room and deep cooling moist closet is equipped with blower fan and liquid nitrogen disperser, and described liquid nitrogen storage tank is provided with liquid nitrogen outlet valve, and described liquid nitrogen outlet valve is connected with liquid nitrogen disperser by liquid nitrogen transfer tube。Due to the thermograde that product temperature is of a relatively high and existence is bigger that firm injection moulding is complete, the region molecules structure that temperature is higher is in relatively active state so that product structural instability。Natural cooling process subsequently easily produces higher residual stress so that product size is unstable。Open aperture above liquid nitrogen disperser employing rustless steel endless tube to make, carrying out slow cooling by controlling cooling rate so that the cooling procedure uniform, controllable of macromolecular material product, reducing the thermograde of product, thus improving product dimensional stability。Macromolecular material molecular motion at cryogenic temperature is slow, and strand internal energy increases so that molecule combines more closely in order, improves degree of crystallinity so that the more stable densification of whole material structure, thus significantly improving the performance of macromolecular material。
Preferably, the top of described reversing chamber is provided with blower fan and heater。Described heater is stratie, as required the product after subzero treatment can be carried out temper at reversing chamber, thus reducing the residual stress of product further, improves dimensional stability。
Preferably, described injection molding apparatus includes injection molding machine nozzle, static template, dynamic template and injection mold, described injection molding machine nozzle is fixedly installed in static template, and described injection mold is arranged between static template and dynamic template, and described injection mold is connected with injection molding machine nozzle。Injection molding machine nozzle makes the macromolecular material of thawing inject injection molded by high pressure, and product shaping and demoulding is placed on connecting gear, enters deep cooling reforming apparatus and carries out subzero treatment。
Preferably, described cryogenic system case lid and thermal-insulation baffle plate are controlled to move up and down by pneumatic means respectively。The macromolecular material product of molding is placed on connecting gear, connecting gear drives product to move to cryogenic system casing, moving up and down of cryogenic system case lid and thermal-insulation baffle plate is controlled, it is possible to control product and in cryogenic system case lid, sequentially enter cooling room, deep cooling moist closet and reversing chamber process by pneumatic means。
Preferably, described liquid nitrogen storage tank is additionally provided with nitrogen outlet valve and relief valve。Nitrogen outlet valve and relief valve are the protection devices of liquid nitrogen storage tank, make liquid nitrogen storage tank energy releasing pressure automatically, it is prevented that blast, and remove potential safety hazard, and additionally the method is safe and reliable, economical environment-protective。
Preferably, described liquid nitrogen transfer tube is provided with electromagnetic valve。Electromagnetic valve is low-temperature solenoid valve, it is possible to control the supply of liquid nitrogen。
Preferably, temperature sensor all it is fixed with in described cooling room, deep cooling moist closet and reversing chamber。Described temperature sensor is platinum resistance temperature sensor, for monitoring the temperature of cooling room, deep cooling moist closet and reversing chamber, accurately controls the technological parameter such as heating rate in processing procedure, rate of temperature fall, treatment temperature and temperature retention time etc.。
Preferably, the tank wall of described cryogenic system casing is double-deck stainless steel, double-deck stainless steel central filler polyurethane foam material。Such structure has good heat-insulating property, in the process that product carries out subzero treatment, controls cryogenic system casing and extraneous heat exchange, saves the energy。
Preferably, described liquid nitrogen storage tank is from pressure and low-temperature wet tank, is made up of double-layer stainless steel material, and intermediate course is vacuum。Liquid nitrogen storage tank has from function of increasing pressure, is used for storing low temperature liquid nitrogen。
Beneficial effects of the present invention is as follows:
The online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device of the present invention is owing to have employed above technical scheme, cooling room is for deep cooling cooling, moist closet is for deep cooling insulation, reversing chamber is for the intensification after deep cooling and tempering insulation, technological parameter in processing procedure such as heating rate, rate of temperature fall, treatment temperature and temperature retention time etc. all can accurately control, there is provided corresponding processing scheme, thus realizing improving the mechanical property of macromolecular material product, wearability and dimensional stability from cooling, structurally-modified and three aspects of stress relieving simultaneously。
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail。
Fig. 1 illustrates the structural representation of the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device of the present invention。
Fig. 2 illustrates the process process curve of the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device of the present invention。
Detailed description of the invention
In order to be illustrated more clearly that the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further。Parts similar in accompanying drawing are indicated with identical accompanying drawing labelling。It will be appreciated by those skilled in the art that following specifically described content is illustrative and be not restrictive, should not limit the scope of the invention with this。
As shown in Figure 1, a kind of online deep cooling reforming apparatus of macromolecular material injection-moulding device, including injection molding apparatus and deep cooling reforming apparatus, described injection molding apparatus includes injection molding machine nozzle 1, static template 2, dynamic template 4 and injection mold 3, described injection molding machine nozzle 1 is fixedly installed in static template 2, described injection mold 3 is arranged between static template 2 and dynamic template 4, and described injection mold 3 is connected with injection molding machine nozzle 1。
Described deep cooling reforming apparatus includes connecting gear 5, cryogenic system casing 18 and liquid nitrogen storage tank 15。The tank wall of described cryogenic system casing 18 is double-deck stainless steel, double-deck stainless steel central filler polyurethane foam material。Described connecting gear 5 is arranged at bottom cryogenic system casing 18, described cryogenic system casing 18 includes cooling room 6, deep cooling moist closet 7 and reversing chamber 8, the two ends of described cryogenic system casing 18 are provided with moveable cryogenic system case lid 16, being provided with moveable thermal-insulation baffle plate 9 between described cooling room 6 and deep cooling moist closet 7 and between deep cooling moist closet 7 and reversing chamber 8, described cryogenic system case lid 16 and thermal-insulation baffle plate 9 are controlled to move up and down by pneumatic means respectively。Described liquid nitrogen storage tank 15 is connected with cooling room 6 and deep cooling moist closet 7 respectively。Described liquid nitrogen storage tank 15 is from pressure and low-temperature wet tank, is made up of double-layer stainless steel material, and intermediate course is vacuum。
The top of described cooling room 6 and deep cooling moist closet 7 is equipped with blower fan 14 and liquid nitrogen disperser 20。Described liquid nitrogen storage tank 15 is provided with liquid nitrogen outlet valve 12, nitrogen outlet valve 11 and relief valve 13, and described liquid nitrogen outlet valve 12 is connected with liquid nitrogen disperser 20 by liquid nitrogen transfer tube 17, and described liquid nitrogen transfer tube 17 is provided with electromagnetic valve 10。Liquid nitrogen transfer tube 17 adopts vaccum thermal insulation technique to prevent from vaporizing in liquid nitrogen transmitting procedure。The cooling of cooling room 6 and the insulation of deep cooling moist closet 7 of deep cooling reforming apparatus adopt liquid nitrogen as cold-producing medium, and minimum treatment temperature is-196 DEG C。
The top of described reversing chamber 8 is provided with blower fan 14 and heater 21。Heater 21 is stratie, is specially annular-heating rod。Described blower fan 14 is arranged at reversing chamber 8 top, and described heater 21 is arranged at below blower fan 14 in reversing chamber 8。
Temperature sensor 19 all it is fixed with in described cooling room 6, deep cooling moist closet 7 and reversing chamber 8。Temperature sensor 19 is platinum resistance temperature sensor, for monitoring the temperature in cooling room 6, deep cooling moist closet 7 and reversing chamber 8。
During use, macromolecular material product shaping and demoulding in the injection mold 3 of injection molding apparatus is placed on connecting gear 5, now the cryogenic system case lid 16 in left side is moved up and opens cooling room 6 by startup pneumatic means, starting connecting gear 5 drives macromolecular material product to cooling room 6, then start pneumatic means and the cryogenic system case lid 16 in left side is moved down closedown cooling room 6, make macromolecular material product carry out slow cooling in cooling room 6。
Monitor after macromolecular material product is down to required cryogenic temperature by cooling down the temperature sensor 19 in room 6, the thermal-insulation baffle plate 9 started between pneumatic means control unlatching cooling room 6 and deep cooling moist closet 7 moves up, drive mechanism 5 drives macromolecular material product to enter deep cooling moist closet 7, now starting pneumatic means and the thermal-insulation baffle plate 9 between cooling room 6 and deep cooling moist closet 7 moves down closedown deep cooling moist closet 7, macromolecular material product is incubated in deep cooling moist closet 7。
After insulation terminates, the thermal-insulation baffle plate 9 started between pneumatic means control deep cooling moist closet 7 and reversing chamber 8 moves up, drive mechanism 5 drives macromolecular material product to enter reversing chamber 8, now starting pneumatic means and the thermal-insulation baffle plate 9 between deep cooling moist closet 7 and reversing chamber 8 moves down closedown reversing chamber 8, macromolecular material product is heated insulation and tempering in reversing chamber 8。
After heating and thermal insulation and tempering terminate, starting pneumatic means and moved up by the cryogenic system case lid 16 on right side, drive mechanism 5 drives macromolecular material product to send and naturally cools to room temperature in reversing chamber 8 to atmospheric environment and terminate。
Cooling room 6 adopts chamber that length is longer to ensure that multiple product can simultaneously enter and cool down, such that it is able to carry out online treatment。
The process process curve of the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device of the present invention is as shown in Figure 2, in figure, the macromolecular material product after injection mo(u)lding is quickly placed in cooling room 6, control rate of temperature fall slow cooling extremely required cryogenic temperature, it is incubated subsequently into deep cooling moist closet 7, insulation enters reversing chamber 8 after terminating and controls heating rate and be to slowly warm up to required temperature and be incubated, and insulation is taken out test specimen air cooling after terminating and terminated to room temperature。
Obviously; the above embodiment of the present invention is only for clearly demonstrating example of the present invention; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot all of embodiment be given exhaustive, every belong to apparent change that technical scheme extended out or the variation row still in protection scope of the present invention。
Claims (10)
1. the online deep cooling reforming apparatus of a macromolecular material injection-moulding device, it is characterized in that: include injection molding apparatus and deep cooling reforming apparatus, described deep cooling reforming apparatus includes connecting gear (5), cryogenic system casing (18) and liquid nitrogen storage tank (15), described connecting gear (5) is arranged at cryogenic system casing (18) bottom, described cryogenic system casing (18) includes cooling room (6), deep cooling moist closet (7) and reversing chamber (8), the two ends of described cryogenic system casing (18) are provided with moveable cryogenic system case lid (16), it is provided with moveable thermal-insulation baffle plate (9) between described cooling room (6) and deep cooling moist closet (7) and between deep cooling moist closet (7) and reversing chamber (8), described liquid nitrogen storage tank (15) is connected with cooling room (6) and deep cooling moist closet (7) respectively。
2. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterized in that: the top of described cooling room (6) and deep cooling moist closet (7) is equipped with blower fan (14) and liquid nitrogen disperser (20), described liquid nitrogen storage tank (15) is provided with liquid nitrogen outlet valve (12), and described liquid nitrogen outlet valve (12) is connected with liquid nitrogen disperser (20) by liquid nitrogen transfer tube (17)。
3. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterised in that: the top of described reversing chamber (8) is provided with blower fan (14) and heater (21)。
4. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterized in that: described injection molding apparatus includes injection molding machine nozzle (1), static template (2), dynamic template (4) and injection mold (3), described injection molding machine nozzle (1) is fixedly installed in static template (2), described injection mold (3) is arranged between static template (2) and dynamic template (4), and described injection mold (3) is connected with injection molding machine nozzle (1)。
5. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterised in that: described cryogenic system case lid (16) and thermal-insulation baffle plate (9) are controlled to move up and down by pneumatic means respectively。
6. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 2, it is characterised in that: described liquid nitrogen storage tank (15) is additionally provided with nitrogen outlet valve (11) and relief valve (13)。
7. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 6, it is characterised in that: described liquid nitrogen transfer tube (17) is provided with electromagnetic valve (10)。
8. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterised in that: all it is fixed with temperature sensor (19) in described cooling room (6), deep cooling moist closet (7) and reversing chamber (8)。
9. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterised in that: the tank wall of described cryogenic system casing (18) is double-deck stainless steel, double-deck stainless steel central filler polyurethane foam material。
10. the online deep cooling reforming apparatus of a kind of macromolecular material injection-moulding device according to claim 1, it is characterised in that: described liquid nitrogen storage tank (15) is from pressure and low-temperature wet tank, is made up of double-layer stainless steel material, and intermediate course is vacuum。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610149595.6A CN105690812B (en) | 2016-03-16 | 2016-03-16 | A kind of online deep cooling reforming apparatus of high molecular material injection-moulding device |
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| CN201610149595.6A CN105690812B (en) | 2016-03-16 | 2016-03-16 | A kind of online deep cooling reforming apparatus of high molecular material injection-moulding device |
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Cited By (2)
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| CN106113363A (en) * | 2016-08-22 | 2016-11-16 | 科威嘉粉末涂料（天津）股份有限公司 | A kind of tablet machine resin sheet chiller |
| CN109624216A (en) * | 2019-01-09 | 2019-04-16 | 泰瑞机器股份有限公司 | A kind of ultrahigh speed injection molding machine with cooling nozzles |
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