A kind of casting method and device of super word
Technical field
The invention belongs to make the method and device of illuminated signs word, and in particular to a kind of casting method and dress of super word
It sets.
Background technique
With the development and progress of society, advertisement has become the important means that enterprise's image building promotes product.It is wide in light
Accusing aspect, people create a kind of word that can be luminous, abbreviation luminescent characters, she is widely used in advertising logo, in signboard, and one
The night in city is found everywhere that dazzling brilliant luminescent characters, and the direction for guiding people to advance, is the eye in city
Eyeball, and her manufacture craft are then different people, different views, and each show his special prowess!Until exceeding the present, a kind of technique most praised highly is exactly:
Use aluminum profile to make closed frame as type matrix according to font, by typefounding resin (generally use acrylic --- methyl
Half polymer of methyl acrylate) the interior liquid layer for forming 3~5 ㎜ thickness of type matrix is cast in, it obtains mutually tying with type matrix after liquid layer solidification
The luminescent characters shell of conjunction.It installs backboard and lamp just obtains luminescent characters.Luminescent characters made by this technique are " super by people's laudatory title
(the characteristics of this word, is word ": 1, since transparent surface is casting, realizing literal and type matrix frame side seamless connection, " super "
It is exquisite;2, because the light transmittance of transparent surface is adjustable, the maximization of literal brightness is realized, " super " is bright;3, since aluminium is not given birth to
Rust, good heat dissipation can make the length in the service life " super " of word shell and lamp.Therefore this word is in the industry " super word ").
The principle of super word casting is exactly to be caused with a kind of method, makes liquid acrylic (the half of methyl methacrylate
Polymer) macromolecular aggregated by unimolecule or small molecule, and solid is become by liquid.There are two types of techniques molded at present:
One is light-initiated casting process, and it is real to cause liquid acrylic with the initiator with light sensitive characteristic under ultraviolet light
Existing bulk polymerization;Another kind is that nature causes casting process, and one kind is added in liquid acrylic slurry, does not have to ultraviolet lighting
It penetrates, it will be able to complete the initiator (such as BPO Dian AIBN ...) caused, complete the casting process of polymerizing curable at room temperature.This
A little processing disadvantages are: 1, mainly by manual operations, technical process is relative complex, low efficiency;2, the bad control of process conditions, summer
Its temperature is high, and polymerization is too fast, and being easy to produce " sudden and violent poly- " (can generate a large amount of bubbles) and " gel effect " (makes hot-spot and solidify
Unevenly or do not solidify), keep product qualification rate not high.
Summary of the invention
The purpose of the present invention is providing a kind of high production efficiency in view of the drawbacks of the prior art, high-quality super word pours
Casting method and device.
Realize the object of the invention the technical solution adopted is as follows:
The casting method of super word provided by the invention, comprising:
Type matrix is placed on casting plate, it is flat towards the casting under after the resin for being used for typefounding is injected the type matrix
Plate sprays cold water or hot water, carries out temperature control by polymerizing curable process of the casting plate to the resin.
The upper surface of casting plate described further provides a closed casting room.
After resin described further injects the type matrix, the casting room is heated using heating equipment, and pre- with hot water
The heat casting plate;After resin starts polymerization heating, cold water, the heat released when by resin polymerization are sprayed to casting plate
It takes away in time;When resin polymerization is completed, hot water is sprayed to casting plate, carries out heating aging;Cold water is sprayed to casting plate again,
Keep the resin after solidifying in type matrix literal and casting plate demoulding.
The pouring device of super word provided by the invention, the casting plate including a surfacing, the casting plate
Be arranged below to casting plate spray water sparge pipe, the sparge pipe by pipeline, valve and water pump respectively with cold water storage cistern and heat
Water tank connection.
Further comprise cabinet, the middle part of the cabinet is equipped with bottom plate, and the sparge pipe is located on bottom plate, the casting
Temperature-controlling chamber is formed between plate and bottom plate, the water inlet of the water pump is connected by boiler outlet pipe and the first valve and boiler
It is logical, and be connected to by cold water storage cistern outlet pipe and the second valve with cold water storage cistern.
Water pump, cold water storage cistern and boiler described further are located at the lower part of cabinet.
The top of cabinet described further is equipped with bracket and heat holding curtain forms closed casting room, is equipped in the casting room
Heating equipment.
Sparge pipe described further is surrounded by reflux sink, and the reflux sink passes through hot water return valve, cold water
Return valve is connected to boiler and cold water storage cistern respectively.
Heating equipment described further uses the warm-air drier for using combustion gas and can be temperature automatically controlled, first, second valve
Door, hot water return valve and cold-water reflux valve are all made of the solenoid valve that can be automatically controlled, and the water pump is controlled by temperature control cup
Automatic work.
Beneficial effect
The present invention can shorten to the casting time of super word 20 minutes, and realize casting, aging, demoulding overall process
The problem of all once completing, having been well solved now there are two types of in the presence of technique in pouring device.
Feature of the invention maximum is exactly to have found a kind of most efficient heat transfer mode water-jetting type heat transfer one by one.Have
She, realizing casting process can be heated up and be cooled down with most fast speed, ensure that entire casting process is able to steady height
The completion of effect is remarkably improved the qualification rate of product, it is ensured that stable product quality.
Basic principle of the invention is:
1, it improves the initial temperature of typefounding resin polymerization and causes the time to shorten;
2, it increases the ratio of initiator and causes the time to shorten;
3, by improving the initial temperature of reaction, to accelerate polymerization speed, and then shorten casting time;When reacting too fast, use
The mode of injection cold water reduces polymerization temperature in time, to prevent " sudden and violent poly- " and " gel effect ".
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the plan view of casting plate in the present invention.
Fig. 4 is the plan view of temperature-controlling chamber in the present invention.
Fig. 5 is the plan view of hot and cold water tank and water pump in the present invention.
Specific embodiment
Seeing Fig. 1 --- Fig. 5, the pouring device of super word provided by the invention, the glass casting including a surfacing are flat
Plate 7 is equipped with the sparge pipe 4 for setting spout 41 sprayed water to casting plate 7 below the casting plate 7, and the sparge pipe 4 passes through
Pipeline 11, valve and water pump 17 are connect with cold water storage cistern 13 and boiler 12 respectively.
When the invention works, type matrix a is placed on casting plate 7, pushes down type matrix a with briquetting 9, is injected into type matrix a
After typefounding resin acrylic slurries b, require to make by control valve according to casting process cold in cold water storage cistern 13 and boiler 12
Hot water respectively enters sparge pipe 4 and sprays to the bottom of casting plate 7, is existed by the heat transfer for plate 7 of casting to acrylic slurries b
It is heated or is cooled down in polymerization process.
The invention also includes a cabinet 1, the middle part of cabinet 1 is equipped with bottom plate 14, and the sparge pipe 4 is located on bottom plate 14, pours
It casts and forms temperature-controlling chamber I between plate 7 and bottom plate 14, water pump 17 is located at the lower part of cabinet 1, water pump with cold water storage cistern 13 and boiler 12
17 water inlet is connected to by boiler outlet pipe 19 and valve 20 with boiler 12, and cold water storage cistern outlet pipe 21 and valve 22 are passed through
It is connected to cold water storage cistern 13, the top of cabinet 1 is equipped with bracket 6 and heat holding curtain 5 forms closed casting room II, is equipped in casting room II
The heating equipment 15 of installation on the frame 6, sparge pipe 4 are surrounded by reflux sink 3, and reflux sink 3 passes through hot water return valve
Door 10, cold-water reflux valve 2 are connected to boiler 12 and cold water storage cistern 13 respectively.It, can be by the way that heating equipment be manually operated when work
15, water pump 17, valve 20, valve 22, hot water return valve 10 and cold-water reflux valve 2, control casting room according to the technological requirements
The reflux for spraying hot and cold water and hot and cold water of II temperature, sparge pipe 4.
Heating equipment 15, water pump 17, valve 20, valve 22, hot water return valve 10 and cold-water reflux valve in the present invention
Automatic control mode work can also be used in door 2, and the warm-air drier using combustion gas, valve 20, valve 22, heat can be used in heating equipment 15
Water return valve 10 and cold-water reflux valve 2 are all made of solenoid valve, for this purpose, the invention also includes can temperature automatically controlled heating set
Standby 15, temperature control cup 16, control valve 19, valve 21, hot water return valve 10 and the cold-water reflux of 14 automatic work of water pump are controlled
The control cabinet 18 that valve 2 works.
The casting method of super word is as follows:
1, boiler power supply is opened, water is warmed to 80 DEG C for use;
2, lamp will be installed and by the aluminum profile type matrix a of plate, tipped upside down on the glass casting plate 7 of casting room II, with briquetting 9 and bullet
Property compression bar 8 push down, make the side type matrix a casting plate 7 between be sealed to not spillage.
3, the liquid acrylic slurries b that will be prepared, injects in the type matrix a and temperature control cup 16 pressed.Then casting room is put down
The heat holding curtain 5 of II front and back, has closed casting room II.
4, the warm-air drier 15 for opening casting room II is heated to 50 DEG C (temperature automatically controlled), is opened water pump 17 and is sprayed by sparge pipe 4
Penetrate 80 DEG C of hot water 1 minute, preheating casting plate 7 is then turned off water pump 17, switch is adjusted to automatic control state (this temperature
It is controlled by the temperature controller in temperature control cup 16).
5, acrylic slurries b starts polymerization heating, when the acrylic in temperature control cup 16, which is warming up to 80 DEG C, spends, casting at this time
Warm-air drier 15 is shut down in room II, and water pump 17 automatically opens, and sprays cold water to casting plate 7, and acrylic slurry polymerization is released
Heat is taken away in time, stablizes temperature between 50~80 DEG C, and when temperature is down to 40 DEG C in temperature control cup 16, polymerization is all complete
At, water pump 17 sprays boiled water to casting plate 7, carries out heating aging after five minutes, and casting plate 7 sprays cold water, it cools down suddenly,
Since acrylic is different from the glass casting coefficient of thermal expansion of plate 7, and different amounts of contraction is generated, and then realize solid in type matrix a
The literal automatic demoulding with glass casting plate 7 of acrylic after change.Getting the product --- super word!
Typefounding resin in the present invention can also use other resins, such as epoxy resin, glass reinforced plastic tree other than acryl resin
Rouge, phenolic resin etc..All there is certain translucency, suitable for the super word of production after these resin solidifications.