CN106808627A - A kind of polyurethane products former and forming method - Google Patents
A kind of polyurethane products former and forming method Download PDFInfo
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- CN106808627A CN106808627A CN201510859868.1A CN201510859868A CN106808627A CN 106808627 A CN106808627 A CN 106808627A CN 201510859868 A CN201510859868 A CN 201510859868A CN 106808627 A CN106808627 A CN 106808627A
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Abstract
The invention discloses a kind of polyurethane products former and forming method, polyurethane products former includes frame, guide post, is fixedly mounted on the matched moulds fixed board of frame left end, the left valve of mould in matched moulds fixed board, is fixedly mounted on the master cylinder fixed plate of frame right part, the master cylinder in master cylinder fixed plate, installs the dynamic plate of matched moulds on the guide bar, the right petal of mould on the dynamic plate of matched moulds；Guide post connects matched moulds fixed board and master cylinder fixed plate, and the dynamic plate of matched moulds is located between matched moulds fixed board and master cylinder fixed plate and can be moved along guide post；The dynamic plate of master cylinder connection matched moulds.Forming method includes：The step of installation mold；The step of matched moulds pressurized, heated；The step of injection raw material and binder；The step of pressurize reaction shaping；The step of being molded after cooling.The good matched moulds that the present invention completes mould ensure that sealing, eliminate self-heating cooling product irregular deformation, improve the processability and moulded products precision of polyurethane products.
Description
Technical field
The present invention relates to polyurethane products field shaping technique, and in particular to polyurethane products former and polyurethane material are poured into the shaping course of reaction after mould.
Background technology
Polyurethane full name is polyurethanes, is the general designation containing the macromolecular compound for repeating carbamate groups on main chain.Polyurethane products forming process needs to use mould mostly, while control shaping environment temperature is needed, to ensure the physical dimension and properties of product.The required condition during product is shaped to of different polyurethane formulations raw materials has larger difference.In the prior art, the shaped device mainly for polyurethane elastomer expanded material is presented, and the shaped device is made up of pre- charging mechanism, feed mechanism, charging mechanism and product collecting device.Its advantage is：1st, simple structure, small volume (floor space is small) cleaning, installation, demolition and maintenance are convenient；2nd, using material volume and the conversion relation of proportion, the material of same volume is exactly identical weight, and the product of identical weight is obtained with the work in combination mode of the bowl-shape storage device of standard and scraper plate, and method of feeding is simple, stabilization, and error is small（Positive and negative 1g）；3rd, two axis robots and material-feeding rolling wheels are used cooperatively, and be precisely controlled carries out the accumulation of Different Weight to each region of product, and then are precisely controlled the product density in each region, are improved and process polyurethane foam quality.Expansion type polyurethane products shaped device is provide only in the prior art, just for the forming process Constrained of expansion type material, it focuses on material conveying metering process, the environmental conditions such as the clamping pressure during formed product, temperature control are not accounted for, is not suitable for having the formed product process of other performance polyurethane materials of requirements at the higher level.
Prior art is only for expansion type polyurethane material forming process, there is provided material weight control, product physical dimension controlling technical method.Prior art is suitable only for small-sized, lighter weight polyurethane products and makes, inapplicable for large product.Its sealing to mould, mold clamping force are not considered, it is impossible to meet the production process of large product.Prior art there is not the temperature influence of consideration polyurethane products forming process, does not have forming process temperature control system in device.The Chinese invention patent application of Application No. 201010283816.1 discloses a kind of casting forming method of polyurethane products, including：First, the internal diameter of cast gate is controlled in 40mm-120mm, and being shaped as cast gate is trapezoidal;2nd, according to the size of product size, multiple cast gates are set on a mould;3rd, cast gate is arranged on mold bottom, foams bottom-up;4th, a product is by multiple casting complete;When the 5th, repeatedly pouring into a mould, topping is carried out with deflation interval.
The content of the invention
The technical problems to be solved by the invention are, a kind of polyurethane products former and forming method are provided, matched moulds sealing, pressurize, insulation reaction shaping and cooling and shaping process that it can realize polyurethane products mould, realize automatic pressure-maintaining, the temperature automatically controlled and cooling shaping in polyurethane products forming process.
The technical solution adopted by the present invention is：A kind of polyurethane products former, including frame, guide post, be fixedly mounted on the matched moulds fixed board of frame left end, the left valve of mould in matched moulds fixed board, be fixedly mounted on the master cylinder fixed plate of frame right part, the master cylinder in master cylinder fixed plate, the dynamic plate of matched moulds on the guide bar, the right petal of mould on the dynamic plate of matched moulds are installed；Guide post connects matched moulds fixed board and master cylinder fixed plate, and the dynamic plate of matched moulds is located between matched moulds fixed board and master cylinder fixed plate and can be moved along guide post；The dynamic plate of master cylinder connection matched moulds.
A kind of described polyurethane products former also includes temperature control system；The temperature control system includes heating plate, heating control system, cooling control system, mould cooling circuit；The heating plate connects heating control system, temperature control is carried out to it by heating control system, between the matched moulds fixed board and the left valve of mould, matched moulds is dynamic that heating plate is mounted between plate and the right petal of mould, and thermal insulation board is provided between heating plate and matched moulds fixed board, between heating plate and the dynamic plate of matched moulds；The mould cooling circuit connects cooling control system, and mould cooling circuit is arranged in the right petal of mould and the left valve of mould.
A kind of described polyurethane products former also includes hydraulic system, the auxiliary binder oil cylinder installed in shell outside；The master cylinder and auxiliary binder oil cylinder connect hydraulic system respectively.
A kind of described polyurethane products former also includes electric control system；The heating control system and cooling control system are all connected with electric control system.
The frame includes base plate and the backplanes support block being arranged on below base plate；Matched moulds fixed board and master cylinder fixed plate are fixedly mounted on base plate；The guide post has four.
The dynamic plate bottom of the matched moulds is provided with dynamic plate and carries travel mechanism, moves plate carrying travel mechanism and includes micrometer adjusting screw, support connecting plate, the rolling guide on base plate, the roller on rolling guide；Support connecting plate connection matched moulds dynamic plate and roller, support connecting plate and the dynamic plate junction of matched moulds are provided with micrometer adjusting screw.
T-slot is provided with the dynamic plate of the matched moulds and matched moulds fixed board, T-slot is used to install the T-shaped screw of fixing mould；Master cylinder is horizontally disposed, matched moulds fixed board and the dynamic plate of matched moulds are arranged vertically, and master cylinder includes piston rod, and piston rod is connected with the dynamic plate of matched moulds, and the dynamic plate of matched moulds can be under master cylinder control along guide post horizontal movement.
A kind of described polyurethane products former also includes the dynamic Board position sensor in master cylinder fixed plate.
A kind of polyurethane products forming method, it is characterized in that, including：The step of installation mold；The step of matched moulds pressurized, heated；The step of injection raw material and binder；The step of pressurize reaction shaping；The step of being molded after cooling.
Described polyurethane products forming method, polyurethane products shaping is carried out using above-mentioned polyurethane products former；Comprise the following steps：
A, installation mold：Mold mounting plate is set, and mold mounting plate includes matched moulds fixed board and the dynamic plate of matched moulds, and the dynamic plate of matched moulds is promoted by master cylinder；By mould installion on mold mounting plate, mould uses two valve structures, is divided into the left valve of mould and the right petal of mould；The left valve of mould and the right petal of mould are separately fixed in matched moulds fixed board and the dynamic plate of matched moulds, and heating plate and thermal insulation board are set between mould and mold mounting plate, and heating plate is connected heating control system by heating plate in die side；Mould cooling circuit is set in the left valve of mould and the right petal of mould, mould cooling circuit is connected into cooling control system；
B, matched moulds pressurized, heated：The dynamic plate of matched moulds is driven by master cylinder, the left valve of mould and the right petal synthesis of mould is overall, apply mold clamping force；Heating control system is opened to heat mould；
C, injection raw material：After mold temperature reaches sets target and stabilization, polyurethane liquid raw material is injected into mould by mould spout；
D, binder：After raw material is filled, binder oil cylinder will be aided in be arranged on the spout top of die top, open auxiliary binder oil cylinder binder；
E, pressurize reaction shaping：Binder oil cylinder is aided in stop descending and keep pressure when reaching binder position, into heat-insulation pressure keeping reactiveness；
F, cooling and shaping：After reaction time terminates, heating control system is closed, the cooling control system that unlatching is connected with mould cooling circuit is cooled down mould with the product in mould, product cooling is shaped；
G, die sinking：After cooling and shaping terminates, auxiliary binder oil cylinder is unloaded；Start master cylinder, complete mould pressure release, the dynamic plate of matched moulds returns to die sinking position, takes out the product in mould.
The present invention is by with hydraulic press and the comprehensive Design of auto temperature controlled system, eliminating, stability contorting precision low and product approval difficult problem poorly sealed to large-scale polyurethane products mould in existing production process.By the reasonable utilization of hydraulic system, using master cylinder matched moulds pressurize, the good matched moulds for completing mould ensure that sealing.By the temperature of PLC centralized Control mould heating plates, make temperature control accurate, it is ensured that in ± 3 DEG C.After the completion of product reaction, by cooling circuit, cooling procedure of the product under mould inside packing state is realized, eliminate self-heating cooling product irregular deformation.Improve the processability and moulded products precision of polyurethane products.Polyurethane products former in the present invention belongs to a kind of common apparatus of polyurethane products shaping, by changing the production that different moulds can realize the product of several such production technology.
Brief description of the drawings
Fig. 1 is the main structure diagram of polyurethane products former of the present invention.
Fig. 2 is the overlooking the structure diagram of polyurethane products former of the present invention.
Fig. 3 is that the matched moulds dynamic plate of dynamic plate in the present invention carries travel mechanism's schematic diagram.
Fig. 4 is the matched moulds state schematic front view of polyurethane products former of the present invention.
Fig. 5 is the matched moulds state schematic top plan view of polyurethane products former of the present invention.
Description of reference numerals：1- frames, 2- master cylinders, 3- master cylinder fixed plates, 4- guide posts, 5- matched moulds moves plate, 6- matched moulds fixed boards, 7- hydraulic systems, 8- electric control systems, 9- thermal insulation boards, 10- heating plates, the right petal of 11- moulds, the left valve of 12- moulds, the dynamic plates of 13- carry travel mechanism, 14- auxiliary binder oil cylinders, the dynamic Board position sensors of 15-, 16- mould cooling circuits, 17- micrometer adjusting screws, 18- supports connecting plate, 19- rollers, 20- rolling guides.
Specific embodiment
As shown in Figures 1 to 5, a kind of polyurethane products former, including frame 1, master cylinder 2,3, four guide posts 4, mold mounting plate of master cylinder fixed plate（Including matched moulds fixed board 6 and the dynamic plate 5 of matched moulds）, hydraulic system 7, the right petal 11 of electric control system 8, mould, the left valve 12 of mould moves plate and carries travel mechanism 13, auxiliary binder oil cylinder 14, dynamic Board position sensor 15, temperature control system and electric control system.Temperature control system includes heating 10, thermal insulation board 9, heating control system, cooling control system, mould cooling circuit 16.Dynamic plate carries travel mechanism includes micrometer adjusting screw 17, support connecting plate 18, roller 19, rolling guide 20.Matched moulds fixed board and master cylinder fixed plate are cuboid, and the two ends of four guide posts are connected to four angle neighbouring positions of matched moulds fixed board and master cylinder fixed plate.
Frame includes base plate and the backplanes support block being arranged on below base plate.Base plate and support block are used for load bearing equipment other systems, and matched moulds fixed board and master cylinder fixed plate are fixed on base plate, are connected by four guide posts therebetween；The dynamic plate of matched moulds is located between matched moulds fixed board and master cylinder fixed plate, and the dynamic plate of matched moulds can be realized opening mould assembling action along four guide post horizontal movements under the driving of master cylinder, and the dynamic plate bottom position of matched moulds has rolling mechanism（I.e.：Dynamic plate carries travel mechanism）, mechanism's main purpose is the dynamic plate of support matched moulds, while reducing the resistance of motion, rolling mechanism is provided with micrometer adjusting screw, can finely tune the dynamic plate angle degree of matched moulds；Master cylinder fixed plate is used to install master cylinder.
Mold mounting plate（Plate and matched moulds fixed board are moved including matched moulds）, for fixing mould（Including the left valve of mould and the right valve of mould）, T-slot is provided with thereon, the T-shaped screw for installing fixing mould.
In the rack-mounted master cylinder fixed plate of master cylinder, its piston rod is connected with the dynamic plate of matched moulds, and master cylinder is arranged horizontally, for mould matched moulds provides matched moulds dwell pressure and mould opening force.
The design of auxiliary binder oil cylinder provides pressure-plate-force in shell outside for installation into die top.
Hydraulic system is mainly made up of pipeline, fuel tank, motor and oil pump, reversal valve etc., for equipment provides motion-promotion force.
The electric control system element such as including circuit, PLC, touch-screen is constituted, and the control to whole equipment is realized by program.
Temperature control system is mainly made up of heating plate, heating control system, mould cooling circuit, cooling control system, for polyurethane products forming process provides the temperature environment for needing.
During use, by polyurethane products mould（Including the left valve of mould and the right valve of mould）On mold mounting plate, mould is two valve structures, is divided into left mould（The left valve of mould）And right mould（The right valve of mould）.Two petals tool is separately fixed in mould fixed board and the dynamic plate of matched moulds.Need to place heating plate and thermal insulation board between mould and mold mounting plate in installation process.Heating plate line is connected with heating control system, and heat is provided to mould and product during for formed product, it is ensured that the temperature environment in product reaction forming process.Thermal insulation board is to prevent heating plate heat to be directly passed to mold mounting plate.
Mould installion finishes rear starting device, by two petals tool（The left valve of mould and the right valve of mould）Two petals are had synthesis entirety by matched moulds by master cylinder, apply certain mold clamping force.Heating control system is opened to heat mould.
After mold temperature reaches sets target and stabilization, prepare urethane raw charging.Polyurethane liquid raw material is injected into mould by mould spout, after raw material is filled, binder oil cylinder will be aided in be arranged on the spout top of die top, open auxiliary binder oil cylinder, binder oil cylinder cylinder rod is descending, raw material in spout is blocked in mould, is continued traveling downwardly and pressure is applied to liquid in mould, stopped descending when reaching binder position and keep pressure.Whole equipment enters heat-insulation pressure keeping product reactiveness.
After reaction time terminates, heating control system is closed, open the cooling control system of connecting mold cooling circuit, to circulating cooling liquid is passed through in mould inner mold cooling circuit, mould is cooled down with the product in mould, make product approval.
After cooling and shaping terminates, mould cooling circuit is closed.Starting device, returns and unloads auxiliary binder oil cylinder；Driven by master cylinder, complete mould pressure release, the dynamic plate of matched moulds returns to die sinking position, takes out the product in mould, and whole production procedure terminates.
Specific implementation process is as follows（With reference to Fig. 4 and Fig. 5, Fig. 4 top supplemented by pressing aid material oil cylinder）：
1st, mould installion places heating plate and thermal insulation board in mould installion version between mould and mold mounting plate, and heating plate is in die side.
2nd, driven by master cylinder and close the dynamic plate matched moulds of tool, pressurization is opened heating control system and begun to warm up；
3rd, heating injects raw material after reaching requirement by mould spout；
The 4th, auxiliary binder oil cylinder is installed, auxiliary binder oil cylinder binder is opened；
5th, pressurize reaction shaping.
6th, heating, opening mold cooling circuit are closed；
7th, cooling and shaping is finished, and closes mould cooling circuit, returns and unload auxiliary binder oil cylinder；
8th, master cylinder drives the dynamic plate die sinking of matched moulds, takes out product.
The present invention is be combineding with each other for a kind of horizontal hydraulic machine and auto temperature controlled system.By being used in combination different moulds, the shaping production process of various polyurethane products can be completed.Matched moulds fixed board is moved in the horizontal direction with the dynamic plate level arrangement of matched moulds, the dynamic plate of matched moulds in matched moulds, and matched moulds and pressure process are completed by horizontally disposed master cylinder.Hydraulic system is designed with equipment, is that master cylinder and auxiliary binder oil cylinder provide power, and complete the conversion of corresponding actions.Equipment heater block（Heating plate）Mould rear side is arranged on, thermal insulation board is provided between heating plate and mold fixed plate；Mould cooling circuit is arranged on mould, and mould inside processing cooling circuit is connected by pipeline with cooling control system.Electrical system includes device action control section, temprature control unit, and temprature control unit is used to realize the electrical control of temperature control system, is controlled comprising computer heating control and cooling, and electric control system completes automatically controlling for heating cooling.The dynamic plate of matched moulds is oriented to by four guide posts, has plate to carry travel mechanism in the dynamic plate bottom design of matched moulds.
Main feature of the invention：The invention provides a kind of more comprehensively polyurethane products shaping scheme, using the stable mold clamping force of horizontal hydraulic equipment, the shaping of various large-scale polyurethane products can be adapted to, there is bigger mold clamping force for large-scale polyurethane products mould, ensure the sealing property of mould, so as to ensure product geometric accuracy.In die casting mouthful position, the present invention is designed with binder oil cylinder, for ensureing polyurethane products density, product air is discharged during charging, improves product compactness, it is ensured that product quality.The present invention is equipped with the temperature control system that polyurethane products are molded course of reaction simultaneously, it is ensured that the temperature control requirement of forming process, after the completion of product reaction, can make product cooling and shaping in mould by cooling system.
The present invention seeks to the forming process that mating mold completes polyurethane, to provide constant pressure in the forming process of polyurethane, ensure the cooling and shaping after the completion of mould good seal, polyurethane products course of reaction constant temperature, reaction, be a kind of polyurethane products Special equipment for forming.The present invention can realize matched moulds sealing, pressurize, insulation reaction shaping and the cooling and shaping process of polyurethane products mould, the present invention can realize plurality of specifications mold use, realize automatic pressure-maintaining, temperature automatically controlled and cooling shaping in polyurethane products forming process.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for a person skilled in the art, the present invention there can be various modifications and variations.All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., are all contained within protection scope of the present invention.
Claims (10)
1. a kind of polyurethane products former, including frame, it is characterised in that：Also include guide post, be fixedly mounted on the matched moulds fixed board of frame left end, the left valve of mould in matched moulds fixed board, be fixedly mounted on the master cylinder fixed plate of frame right part, the master cylinder in master cylinder fixed plate, the dynamic plate of matched moulds on the guide bar, the right petal of mould on the dynamic plate of matched moulds are installed；Guide post connects matched moulds fixed board and master cylinder fixed plate, and the dynamic plate of matched moulds is located between matched moulds fixed board and master cylinder fixed plate and can be moved along guide post；The dynamic plate of master cylinder connection matched moulds.
2. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：Also include temperature control system；The temperature control system includes heating plate, heating control system, cooling control system, mould cooling circuit；The heating plate connects heating control system, temperature control is carried out to it by heating control system, between the matched moulds fixed board and the left valve of mould, matched moulds is dynamic that heating plate is mounted between plate and the right petal of mould, and thermal insulation board is provided between heating plate and matched moulds fixed board, between heating plate and the dynamic plate of matched moulds；The mould cooling circuit connects cooling control system, and mould cooling circuit is arranged in the right petal of mould and the left valve of mould.
3. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：Also include hydraulic system, the auxiliary binder oil cylinder installed in shell outside；The master cylinder and auxiliary binder oil cylinder connect hydraulic system respectively.
4. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：Also include electric control system；The heating control system and cooling control system are all connected with electric control system.
5. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：The frame includes base plate and the backplanes support block being arranged on below base plate；Matched moulds fixed board and master cylinder fixed plate are fixedly mounted on base plate；The guide post has four.
6. a kind of polyurethane products former as claimed in claim 5, it is characterised in that：The dynamic plate bottom of the matched moulds is provided with dynamic plate and carries travel mechanism, moves plate carrying travel mechanism and includes micrometer adjusting screw, support connecting plate, the rolling guide on base plate, the roller on rolling guide；Support connecting plate connection matched moulds dynamic plate and roller, support connecting plate and the dynamic plate junction of matched moulds are provided with micrometer adjusting screw.
7. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：T-slot is provided with the dynamic plate of the matched moulds and matched moulds fixed board, T-slot is used to install the T-shaped screw of fixing mould；Master cylinder is horizontally disposed, matched moulds fixed board and the dynamic plate of matched moulds are arranged vertically, and master cylinder includes piston rod, and piston rod is connected with the dynamic plate of matched moulds, and the dynamic plate of matched moulds can be under master cylinder control along guide post horizontal movement.
8. a kind of polyurethane products former as claimed in claim 1, it is characterised in that：Also include the dynamic Board position sensor in master cylinder fixed plate.
9. a kind of polyurethane products forming method, it is characterized in that, including：
The step of installation mold；
The step of matched moulds pressurized, heated；
The step of injection raw material and binder；
The step of pressurize reaction shaping；
The step of being molded after cooling.
10. polyurethane products forming method according to claim 9, it is characterized in that, polyurethane products shaping is carried out using the polyurethane products former any one of claim 1-8；Specifically include following steps：
A, installation mold：Mold mounting plate is set, and mold mounting plate includes matched moulds fixed board and the dynamic plate of matched moulds, and the dynamic plate of matched moulds is promoted by master cylinder；By mould installion on mold mounting plate, mould uses two valve structures, is divided into the left valve of mould and the right petal of mould；The left valve of mould and the right petal of mould are separately fixed in matched moulds fixed board and the dynamic plate of matched moulds, and heating plate and thermal insulation board are set between mould and mold mounting plate, and heating plate is connected heating control system by heating plate in die side；Mould cooling circuit is set in the left valve of mould and the right petal of mould, mould cooling circuit is connected into cooling control system；
B, matched moulds pressurized, heated：The dynamic plate of matched moulds is driven by master cylinder, the left valve of mould and the right petal synthesis of mould is overall, apply mold clamping force；Heating control system is opened to heat mould；
C, injection raw material：After mold temperature reaches sets target and stabilization, polyurethane liquid raw material is injected into mould by mould spout；
D, binder：After raw material is filled, binder oil cylinder will be aided in be arranged on the spout top of die top, open auxiliary binder oil cylinder binder；
E, pressurize reaction shaping：Binder oil cylinder is aided in stop descending and keep pressure when reaching binder position, into heat-insulation pressure keeping reactiveness；
F, cooling and shaping：After reaction time terminates, heating control system is closed, the cooling control system that unlatching is connected with mould cooling circuit is cooled down mould with the product in mould, product cooling is shaped；
G, die sinking：After cooling and shaping terminates, auxiliary binder oil cylinder is unloaded；Start master cylinder, complete mould pressure release, the dynamic plate of matched moulds returns to die sinking position, takes out the product in mould.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510859868.1A CN106808627A (en) | 2015-12-01 | 2015-12-01 | A kind of polyurethane products former and forming method |
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| CN201510859868.1A CN106808627A (en) | 2015-12-01 | 2015-12-01 | A kind of polyurethane products former and forming method |
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| CN108788100A (en) * | 2018-07-03 | 2018-11-13 | 永康市给乐电器有限公司 | A kind of processing mold and casting method of Moca coffee pot lower body |
| CN109878007A (en) * | 2019-04-18 | 2019-06-14 | 东莞市东泉模具材料有限公司 | A kind of board capable of replacing wood board molding equipment and moulding process |
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| CN103128959A (en) * | 2011-12-02 | 2013-06-05 | 广东乐善机械有限公司 | Mould locking device for bottle blowing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109878007B (en) * | 2019-04-18 | 2024-04-30 | 东莞市东泉模具材料有限公司 | Forming equipment and forming process for wood substitute plate |
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