CN107908067A - The processing method and system of a kind of projection screen - Google Patents
The processing method and system of a kind of projection screen Download PDFInfo
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- CN107908067A CN107908067A CN201711148107.0A CN201711148107A CN107908067A CN 107908067 A CN107908067 A CN 107908067A CN 201711148107 A CN201711148107 A CN 201711148107A CN 107908067 A CN107908067 A CN 107908067A
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- Prior art keywords
- backboard
- glue
- height
- roller
- projection screen
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- General Physics & Mathematics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The application provides a kind of processing method and system of projection screen.The projection screen processed using this system of processing, glue fitting flatness is good, cost is low, production efficiency is high, and the ability of environment resistant changing capability and mechanical experiment is strong.The bonding force higher of the liquid glue used relative to solid foam rubber, the application, is conducive to the tangential forces for resisting optical diaphragm and backboard relative motion produces, so as to further enhance the environment resistant changing capability of projection screen and the flatness of projection screen.In addition, the inside of the reticulate structure of gluing roller outer surface can store liquid glue, the distribution of reticulate structure has uniformity, can further improve the uniformity of gluing roller coating.
Description
Technical field
This application involves the processing method and system of display technology field, more particularly to a kind of projection screen.
Background technology
Projector is the important equipment of modern image media presentation, is usually used cooperatively with projection screen.Projector into
As being based primarily upon the principle of reflection of light, the light of projector's transmitting can reflect on the projection screen, and along the optical link of setting
Eyes of user is injected in footpath, so as to form image.But when the flatness of projection screen is insufficient, the opticpath that actually reflects can be with
Relatively large deviation occurs in the opticpath of setting, the image on projection screen is distorted and distortion.As it can be seen that projection screen
Flatness is one of important factor in order of drop shadow effect.
Fig. 1 is a kind of structure diagram of common projection screen.As seen from Figure 1, projection screen mainly includes optical film
200 two parts of piece 100 and backboard, wherein, optical diaphragm 100 is the core component of projection screen, micro- inside optical diaphragm 100
The light that structure can project projector can also offset ambient light to screen intensity according to certain angle of reflection
Interference.Due to the rigidity deficiency of optical diaphragm 100 itself, it is therefore desirable to supported by backboard 200, to meet projection screen base
This flatness requirement.Need to bond by the foam rubber 300 of double-sides belt glue between optical diaphragm 100 and backboard 200.Foam rubber
300 be the common name of foam base material double faced adhesive tape, is mainly base material by EVA or PE foams, and be coated with solvent pressure-sensitive adhesive on its two sides
It is fabricated, there is damping and sealing function.The main manufacture craft of projection screen is as follows：Foam rubber is pasted on backboard 200
300；Optical diaphragm 100 is affixed to the another side of foam rubber 300；Optical diaphragm 100 is pressed, projection screen is made.
Foam base material is mostly manufactured material after plastic pellet foaming, its surface has rough micro-structure more.Cause
This, during foam rubber 300 bonds, inevitably has residual gas between foam rubber 300 and backboard 200, works as gas
When environmental factor changes, the pressure differential of residual gas and external environment acts power, can cause optical film for pressure, temperature
Piece 100 is heaved, in addition, rough foam rubber 300 can also make the glue-spread on its surface there are notable difference, in severe ring
The phenomenon that optical diaphragm 100 can be caused to depart from 200 structure of backboard under border, shows as projection screen bubbling or hickie phenomenon；
Further, since the optical diaphragm 100 of plastic cement material is different from the coefficient of expansion of the backboard 200 of metal material, cause the two in height
There are relative motion trend in warm high humidity environment, tangential forces are produced, and the adhesive strength of foam rubber unit area is limited, makes
Its tangential tensile resistance is weaker, and when the bonding force of foam rubber is insufficiently resistant to this tangential forces, optical film can also occur
The phenomenon that piece 100 departs from 200 structure of backboard.As it can be seen that the environment resistant changing capability of existing projection screen is weaker, environmental change is held
The flatness of projection screen is easily reduced, influences the display effect of projection screen.
The content of the invention
This application provides the processing method and system of a kind of projection screen, to solve projection screen easily by environmental change
The problem of influencing, and reducing flatness.
In a first aspect, this application provides a kind of system of processing of projection screen, the projection screen includes optical diaphragm
And backboard, the system of processing include：
Transmission platform, for transmitting the backboard along preset direction, in the top of the transmission platform, along the default side
To being equipped with glue spreading apparatus and pressing device successively；
The glue spreading apparatus, for liquid glue to be coated uniformly on to the surface of the backboard；
The pressing device, for the optical diaphragm to be pressed together on the back plate surface coated with liquid glue；
The glue spreading apparatus includes gluing roller, and the outer surface of the gluing roller, which is evenly distributed with, multiple to be used to store institute
State the reticulate structure of liquid glue.
Second aspect, present invention also provides a kind of processing method of projection screen, the processing method is applied to above-mentioned
System of processing, including：
Step 1：Backboard is positioned on transmission platform, the transmission platform is used to transmit the backboard along preset direction；
Step 2：The liquid glue for being stored in glue spreading apparatus outer surface is coated uniformly on back plate surface, the glue spreading apparatus
Including gluing roller, the outer surface of the gluing roller is evenly distributed with multiple reticulate pattern knots for being used to store the liquid glue
Structure；
Step 3：Optical diaphragm is pressed together on the back plate surface coated with liquid glue.
The application's has the beneficial effect that：
The application provides a kind of processing method and system of projection screen.The application replaces foam rubber pair using liquid glue
Optical diaphragm and backboard are bonded.Since liquid glue has mobility before curing, pressing device is to optical diaphragm
During being pressed with backboard, the liquid glue coated on back plate surface can be homogeneous towards thickness under the effect of the pressure
Trend flowing, enhancing projection screen covers the uniformity of glue；Meanwhile the mobility of liquid glue also helps and drives optical diaphragm away
The bubble retained between backboard, avoids projection screen uneven or retain bubble and bulging phenomenon occur due to covering glue, from
And strengthen the environment resistant changing capability of projection screen, and the flatness of extreme environment projection screen.In addition, optical diaphragm and
Although backboard is with higher flatness, still inevitably there are the microstructures such as fine pits or protrusion, liquid
Glue into this microstructure, and can progressively strengthen bonding force under the effect of the pressure of pressing device during cured,
Accordingly, with respect to solid foam rubber, the bonding force higher for the liquid glue that the application uses, be conducive to resist optical diaphragm and
The tangential forces that backboard relative motion produces, so as to further enhance the environment resistant changing capability and projection screen of projection screen
Flatness.In addition, the inside of the reticulate structure of gluing roller outer surface can store liquid glue, the distribution of reticulate structure has
Uniformity, can further improve the uniformity of gluing roller coating.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of common projection screen；
Fig. 2 is a kind of structure diagram of projection screen system of processing provided by the embodiments of the present application；
Fig. 3 is a kind of front view of gluing roller provided by the embodiments of the present application；
Fig. 4 is a kind of side view of gluing roller provided by the embodiments of the present application；
Fig. 5 is the front view of another gluing roller provided by the embodiments of the present application；
Fig. 6 is the front view of the third gluing roller provided by the embodiments of the present application；
Fig. 7 is a kind of method flow diagram of projection screen processing method provided by the embodiments of the present application；
Fig. 8 is the method flow diagram of another projection screen processing method provided by the embodiments of the present application.
Symbolic indication：
100- optical diaphragms, 200- backboards, 10- transmission platforms, 11- pressure sensors, 20- glue spreading apparatus, 21- apply rubber-surfaced roll
Wheel, the first fixing axles of 22-, the first height sensors of 23-, 211- reticulate structures, 30- pressing devices, 31- pressing rollers, 32- the
Two fixing axles, the second height sensors of 33-, 40- melt adhesive dispenser, 41- transmission pipelines, 42- gluing brushes.
Embodiment
For the form and viscosity property due to foam rubber itself, cause the technical problem of projection screen flatness deficiency,
This application provides a kind of projection screen and its system of processing.The core concept of the application is：Foam is replaced using liquid glue
Glue bonds optical diaphragm 100 and backboard 200.Since liquid glue has mobility, pressing device 30 before curing
During being pressed to optical diaphragm 100 and backboard 200, the liquid glue coated on 200 surface of backboard can press
Under the action of power the uniformity of glue is covered towards the direction flowing that thickness is homogeneous, enhancing projection screen；Meanwhile the flowing of liquid glue
Property also helps the bubble driven away and retained between optical diaphragm 100 and backboard 200, avoid projection screen due to cover glue it is uneven or
Person retains bubble and bulging phenomenon occurs, so that strengthen the environment resistant changing capability of projection screen, and extreme environment projection
The flatness of screen.In addition, although optical diaphragm 100 and backboard 200 are still inevitably deposited with higher flatness
In the microstructure such as fine pits or protrusion, liquid glue can be under the effect of the pressure of pressing device 30, into this microcosmic knot
In structure, and progressively strengthen bonding force during cured, the liquid used accordingly, with respect to solid foam rubber 300, the application
The bonding force higher of state glue, is conducive to the tangential forces for resisting optical diaphragm 100 and 200 relative motion of backboard produces, from
And further enhance the environment resistant changing capability of projection screen and the flatness of projection screen.Below in conjunction with the accompanying drawings, the application carries
The projection screen and its system of processing gone out elaborates.
Referring to Fig. 2-Fig. 6, a kind of structure diagram of projection screen system of processing provided by the embodiments of the present application is shown,
The projection screen includes optical diaphragm 100 and backboard 200.From Figure 2 it can be seen that the system of processing includes transmission platform 10, Yi Jishe
It is placed in the glue spreading apparatus 20 and pressing device 30 of the top of transmission platform 10.
Transmission platform 10, its own is equipped with driving device, can transmission platform 10 moved along preset direction so that band
Backboard 200 on dynamic transmission platform 10 is moved along preset direction.Make in addition, transmission platform 10 also plays backboard 200 support
With, therefore, transmission platform 10 can be made of the higher section bar of rigidity and intensity, and before transmission platform 10 comes into operation,
The verification of progress flatness is needed, is horizontal with ensureing that backboard 200 is placed after this transmission platform 10, reduces and is applied to follow-up
The interference of adhesive dispenser 20 and pressing device 30.Preset direction in the present embodiment is along a certain rectilinear direction, i.e. transmission platform
10 linearly arrange, and the backboard 200 on transmission platform 10 moves along a straight line along preset direction.
Glue spreading apparatus 20 and pressing device 30 are arranged in order along above-mentioned preset direction, and glue spreading apparatus 20 is mainly used for liquid
State glue is coated uniformly on the surface of the backboard 200.Pressing device 30 can produce uniform on the surface of optical diaphragm 100
The optical diaphragm 100, can be pressed together on the surface of the backboard 200 coated with liquid glue by pressure.
The present embodiment, bonds optical diaphragm 100 and backboard 200 instead of foam rubber using liquid glue.Due to liquid
State glue has mobility before curing, and pressing device 30 is in the process pressed to optical diaphragm 100 and backboard 200
In, the liquid glue coated on 200 surface of backboard can be thrown towards the homogeneous trend flowing of thickness, enhancing under the effect of the pressure
Shadow screen covers the uniformity of glue；Meanwhile the mobility of liquid glue is also helped and driven away between optical diaphragm 100 and backboard 200
The bubble retained, avoids projection screen uneven or retain bubble and bulging phenomenon occur due to covering glue, so as to strengthen projection
The environment resistant changing capability of screen, and the flatness of extreme environment projection screen.In addition, optical diaphragm 100 and backboard 200
Although with higher flatness, still inevitably there are the microstructures such as fine pits or protrusion, liquid glue
Into in this microstructure, and it can progressively strengthen bonding force during cured under the effect of the pressure of pressing device 30, because
This, the bonding force higher of the liquid glue used relative to solid foam rubber 300, the application, is conducive to resist optical diaphragm
100 and 200 relative motion of backboard produce tangential forces so that further enhance projection screen environment resistant changing capability and
The flatness of projection screen.
In the present embodiment, due to the use of liquid glue as optical diaphragm 100 and the adhesive of backboard 200, therefore, to protect
Demonstrate,prove the wettability of liquid glue, it is desirable to optical diaphragm 100 and backboard 200 should have certain surface tension, and according to optics
The surface tension coefficient of diaphragm 100 and backboard 200 selects suitable liquid glue.Specifically chosen method can be：With different dynes
Pen is rule on optical diaphragm 100 and backboard 200 respectively, when the line streaked cannot just connect together, on this dyne of pen
The numerical value in face is dyne value (surface tension value) of optical diaphragm 100 and backboard 200, further according to the optical diaphragm 100 of acquisition
Suitable glue is selected with a dyne value for backboard 200.
In the present embodiment, liquid glue should have the property that：Mobility is good after thawing, the open hour (refer to from being applied to
Starting on base material, the time of viscosity lost to glue curing) properly (surface tension coefficient ＞ 35 is i.e. for suitable, surface tension coefficient
Can), it can be good at infiltrating optical diaphragm 100 and backboard 200, and tensile strength is high after curing.
In the present embodiment, it may be selected to meet polytype liquid such as the cold glue of requirements above, response type adhesive, hot melt adhesive
State glue.But the gumminess of cold glue is slightly higher compared with foam rubber, also easily because of the backboard 200 of optical diaphragm 100 and metal material
The coefficient of expansion is different, the problem of structure disengaging occurs；Hot melt adhesive temperature is usually at 170-200 DEG C, to a certain extent by resistance to height
Warm nature can limit.In the application preferred embodiment, Reactive hot melt adhesive is selected as bonding optical diaphragm 100 and backboard 200
Adhesive.With Reactive hot melt adhesive coordinate optical diaphragm 100 and backboard 200 surface tension should more than ＞ 35dyn/cm,
To ensure the wettability of Reactive hot melt adhesive.Reactive hot melt adhesive is introduced on the basis of hot melt adhesive (thermoplasticity macromolecular)
Reactive active group, it has hot melt adhesive concurrently and reacts gluing adhesive, both fast with hot melt adhesive sizing simplicity, curing
Speed, the characteristics of tack is high, and have the advantages that response type adhesive adhesive strength is high, heat-resist, can be in low temperature (100-
120 DEG C) under gluing, harmful effect will not be produced to the working status of 100 micro-structure of optical diaphragm.Common kind is band isocyanide
The polyurethane prepolymer of acid esters end group, cementability is respectively provided with to the backboard 200 of the optical diaphragm 100 of plasticity, and metal material
Energy.After Reactive hot melt adhesive is coated on optical diaphragm 100 and backboard 200, pass through the active group in Reactive hot melt adhesive
Reaction is allowed to crosslinking curing, produces bonding force, and is gradually strengthened with cured, so that by optical diaphragm 100 and backboard
200 close adhesions, strengthen the environment resistant changing capability and resistance to mechanical impact capacity of projection screen.
Since the curing of Reactive hot melt adhesive is with the chemical reaction such as crosslinking so that Reactive hot melt adhesive is to optical diaphragm
100 and the bonding force of backboard 200 greatly enhance, and the Reactive hot melt adhesive under liquid condition has mobility, uniformly outer
Under power effect, it is easy to smooth sticky membrane coat is formed, and can be trickle into optical diaphragm 100 and 200 surface of backboard
Depression in, after Reactive hot melt adhesive gradually cures, the surfaces of fine depressions also can be with reaction type hot-fusible glue sticking, can be into
One step improves the bonding force between optical diaphragm 100 and backboard 200, it is ensured that this bonding force can resist optical diaphragm 100 and the back of the body
The tangential forces that 200 relative motion of plate produces, so as to improve the flatness of projection screen.
Reactive hot melt adhesive in the present embodiment reacts hot melt adhesive for hot melt moisture cure type, can be specifically containing end isocyanide
The hot melt adhesive of sour cruel base, such as to hold hot melt adhesive of the cruel polyurethane performed polymer of isocyanic acid as main base.Heat containing the end cruel base of isocyanic acid
The principle of solidification of melten gel is：In the air or moisture on optical diaphragm 100 and backboard 200 is absorbed, and chemistry occurs therewith
Reaction, is converted into the strong chemical composition of bonding force and carbon dioxide, so as to fulfill the curing of Reactive hot melt adhesive.Certainly, this Shen
It please can also use and contain-Si (OR) in other embodiment3The hot melt moisture cure type adhesive of group, and hot melt heating are anti-
Answer the other kinds of Reactive hot melt adhesive such as type.
In the application, a variety of design forms may be present in glue spreading apparatus 20, such as, can be fixed on transmission by stent to put down
The glue brush of the top of platform 10, liquid glue can infiltrate glue brush by transmission channel, then be contacted by glue brush with the surface of backboard 200,
So as to which liquid glue to be coated to the surface of backboard 200.But by above gluing mode, the stability of glue-spread is not strong, makes
The uniformity for obtaining 200 surface size of backboard is easy to not reach pre-provisioning request.
For this reason, in the application preferred embodiment, glue spreading apparatus 20 includes gluing roller 21, and gluing roller 21 is in cylinder,
Liquid glue is stored with its cylindrical surface, gluing roller 21 during rotation, can apply rubber-surfaced roll along 22 rotation of the first fixing axle
The cylindrical surface of wheel 21 is contacted with backboard 200, and the liquid glue of storage is coated uniformly on to the surface of backboard 200.In order to coordinate
The transmission of backboard 200, the sense of rotation of gluing roller 21 is consistent with the transmission direction of backboard 200, such as, backboard 200 is from left-hand
Right transmission, then gluing roller 21 may be designed as along 22 rotation counterclockwise of the first fixing axle, to reduce gluing roller 21 and backboard
Friction between 200, easy to the progress of coating process.
In order to improve gluing uniformity, multiple recessed reticulate structures are evenly distributed with 21 outer surface of gluing roller
211, liquid glue is stored in the reticulate structure 211.Fig. 3 and Fig. 4 is respectively a kind of painting rubber-surfaced roll provided by the embodiments of the present application
The front view and side view of wheel.By Fig. 3 and Fig. 4 as it can be seen that the reticulate structure 211 include along the gluing roller transverse direction and/or
The equally distributed multiple strip projected parts structures in longitudinal direction.The inside of reticulate structure 211 can store liquid glue, reticulate structure 211
Distribution has uniformity, can improve the uniformity of the coating of gluing roller 21.Further, since the Reactive hot melt adhesive in the present embodiment
Need to realize by the moisture in air and cure, therefore, the reticulate structure 211 in the present embodiment can be connected with outside air
It is logical, Reactive hot melt adhesive is come into full contact with air, so as to promote the curing reaction of Reactive hot melt adhesive, when shortening its curing
Between.
The surface of gluing roller 21 is also designed to the reticulate structure 211 of bidirectional crossed shape protrusion, or cellular convex
The reticulate structure 211 risen, respectively as shown in Figure 5 and Figure 6.The design of bidirectional crossed shape or cellular reticulate structure 211 is more
Precision, so as to form the passage being more connected with outside air, is more advantageous to the reaction and curing of Reactive hot melt adhesive；Together
When, be conducive to reduce the storage glue amount of each reticulate structure 211, further increase the uniformity of gluing.In addition, coagulated with the shape
Gu glue after has firmer structure, and the ability of resistance external force of environment change is stronger.
In addition, in order to monitor the distance between gluing roller 21 and transmission platform 10 in real time, to ensure gluing roller
21 apply constant pressure on 200 surface of backboard, and in the present embodiment, glue spreading apparatus 20 further includes the first height sensor 23, and first
Height sensor 23 is fixed in the first fixing axle 22 of gluing roller 21, for detect gluing roller 21 and transmission platform 10 it
Between height, so as to gluing roller 21 according to the testing result of the first height sensor 23 adjust height, so that it is guaranteed that apply rubber-surfaced roll
Wheel has constant distance between the distance between 21 and transmission platform 10, and, gluing roller 21 produces on 200 surface of backboard
Pressure it is constant.Wherein, the first height sensor 23 can be disposed on height detecting display in the first fixing axle 22 or
Pneumatic cylinder (atmospheric pressure value can intuitively be read by being configured with air gauge).
In the present embodiment, pressing device 30 includes pressing roller 31, and pressing roller 31 is used for along 32 rotation of the second fixing axle
Optical diaphragm 100 is pressed together on to 200 surface of backboard coated with liquid glue along preset direction.This pressing roller 31 is with applying rubber-surfaced roll
The set-up mode of wheel 21 is similar, and which is not described herein again.
It is similar with the pressure monitoring method of gluing roller 21, further include second in the second fixing axle 32 of pressing roller 31
Height sensor 33, for detecting the height between pressing roller 31 and transmission platform 10, to press roller 31 according to second
The testing result adjustment height of height sensor 33.
On the contact surface of transmission platform 10 and backboard 200, multiple pressure sensors 11 are additionally provided with, this pressure sensor 11
Focus mostly in the lower section of gluing roller 21 and pressing roller 31, the pressure produced for detecting backboard 200 on transmission platform 10.
Pressure sensor 11 can be engaged with the first height sensor 23, the pressure that detection gluing roller 21 produces on 200 surface of backboard
Power, so that gluing roller 21 adjusts its height in time according to the testing result of 11 and/or first height sensor 23 of pressure sensor
Degree, so as to fulfill the gluing uniformity of backboard 200；Pressure sensor 11 can also be engaged with the second height sensor 33, inspection
Pressure measurement closes roller 31 in optical diaphragm 100, to press roller 31 according to 11 and/or second height sensor 33 of pressure sensor
Testing result adjust its height in time, prevent pressing 31 pressure inequality of roller cause 100 surface some regions of optical diaphragm by
Power is excessive and damages optical diaphragm 100, or 100 surface some regions stress of optical diaphragm it is too small and cause glue pressing loosely
And the phenomenon of adhesive failure.
In addition, when catastrophic failure occur in the first height sensor 23 and the second height sensor 33, accuracy of detection is held
Easily exceed threshold range, at this time, gluing roller 21 still can be according to the testing result of pressure sensor 11 with pressing roller 31
Adjustment height, so as to ensure the uniformity of gluing and pressing to the full extent.In addition, it is arranged on transmission platform 10 other
The pressure sensor 11 of position, can detect pressure of the backboard 200 in transmitting procedure, so as to verify the smooth of transmission platform 10
Degree.
In addition, for the uniformity coefficient for further improving gluing roller 21 with pressing 31 pressure of roller, the gluing roller
21 is equal with the distance of each point on the contact surface of backboard 200 to the first fixing axle 22, and gluing roller 21 uses rigidity and intensity
High metal material, first passes through machining roughing and makes blank, then finishes and make accurate cylindrical surface；In gluing roller 21
Outer surface the reticulate structures 211 of needs is made by laser-engraving technique, then 211 surface of reticulate structure is carried out at oxidation
Reason.It can so ensure that gluing roller 21 has very high rigidity and intensity, it is not deformed upon in use, so that
Ensure that the distance of each point to the first fixing axle 22 in gluing roller 21 in each reticulate structure 221 is also equal.Likewise, pressing
Roller 31 is also required to have the characteristic that rigidity is high, cylindricity is high, to ensure to press on the contact surface of roller 31 and optical diaphragm 100
Each point to the second fixing axle 32 distance it is equal, be conducive to gluing roller 21, pressing 31 height of roller is precisely controlled.Due to
The gap that gluing roller 21 is arrived between backboard 200 is consistent, therefore, the uniformity for the Reactive hot melt adhesive being coated on backboard 200
Also it is higher；Likewise, since pressing roller 31 is consistent with the gap between optical diaphragm 100, in bonding process, patch
Reactive hot melt adhesive after conjunction is also very uniform.
The application is by setting the higher gluing roller 21 of the higher transmission platform 10 of flatness, cylindricity, pressing roller
31 and feedback device (pressure sensor 11, the first height sensor 23 and the second height sensor 33), it is ensured that gluing and
Uniformity is pressed, when the testing result of pressure sensor 11, the first height sensor 23 and the second height sensor 33 is pre-
If when in scope, gluing roller 21 and pressing roller 31 can adjust oneself height according to testing result, avoid pressure inequality from causing
The glue thickness being coated on backboard 200 differs；When testing result exceedes preset range, show gluing roller 21 and roller stitcher
There is relatively large deviation in the height of wheel 31, and pressure sensor 11, the first height sensor 23 and the second height sensor 33 will hairs
Go out alarm warning.
Due to Reactive hot melt adhesive normally solid state at normal temperatures, the system, which further includes, melts adhesive dispenser 40, melts
Adhesive dispenser 40 is connected with glue spreading apparatus 20, is liquid for solid Reactive hot melt adhesive to be melted, and by the reaction of liquid
Type hot melt adhesive is delivered to glue spreading apparatus 20 by transmission pipeline 41.Since Reactive hot melt adhesive can react with air, because
This, it is usually a closed container to melt adhesive dispenser 40, during using melting adhesive dispenser 40, it can be heated by external heat source, heating temperature
Degree can be 160 DEG C or so.
In addition, it is delivered to glue spreading apparatus for the ease of melt that the Reactive hot melt adhesive melted in adhesive dispenser 40 is more uniformly distributed
20, gluing brush 42 is additionally provided between transmission pipeline 41 and glue spreading apparatus 20, the liquid glue that transmission pipeline 41 flows out first infiltrates
Gluing brush 42, gluing brush 42 are in contact with the cylindrical surface of gluing roller 21, so that uniformly brush covers the glue on gluing brush 42
On the surface of gluing roller 21.
Further, since being pressed together on glue of the optical diaphragm 100 between backboard 200 needs certain hardening time, therefore,
When making projection screen, after step is pressed, it should also include curing schedule.The screen posted can be placed on turnover
Car, stands at 25 DEG C or so of temperature, 50%RH humidity and cures.Specific hardening time and condition of cure, can combine real
Border base material determines.
Based on above-mentioned system of processing, the embodiment of the present application also provides a kind of processing method of projection screen.It refer to Fig. 7,
It show a kind of method flow diagram of projection screen processing method provided by the embodiments of the present application.As seen from Figure 7, this method includes
Following steps：
Step S100：Backboard is positioned on transmission platform, the transmission platform is used to transmit the back of the body along preset direction
Plate；
Step S200：The liquid glue for being stored in glue spreading apparatus outer surface is coated uniformly on back plate surface, the gluing
Device includes gluing roller, and the outer surface of the gluing roller is evenly distributed with multiple reticulate patterns for being used to store the liquid glue
Structure；
Step S300：Optical diaphragm is pressed together on the back plate surface coated with liquid glue.
Wherein, step S200 is further included：The height between the gluing roller and the transmission platform is detected, and according to height
Spend the height that testing result adjusts the gluing roller；Step S300 is further included：Detect the pressing roller and the transmission is flat
Height between platform, and according to the height of the height detection result adjustment pressing roller.
Fig. 8 is refer to, show the method flow diagram of another projection screen processing method provided by the embodiments of the present application.
As seen from Figure 8, this method further includes：
Step S400：The pressure that the backboard produces on the transmission platform is detected, and according to pressure sensing result tune
The whole gluing roller and/or the height for pressing roller.
In addition, before step S100, this method can also include：It is liquid that solid Reactive hot melt adhesive, which is melted,
And the Reactive hot melt adhesive of liquid is delivered to the glue spreading apparatus by transmission pipeline.
This programme also provides a kind of projection screen on the basis of above system of processing, and the projection screen is added by above-mentioned
Work system is process.This projection screen by hot and humid, high temperature storage, high/low temperature circulation, low pressure, vibrate, fall
A series of experiments.State is intact after experiment, and no degumming and bulging phenomenon occur.This projection screen glue fitting flatness it is good,
Cost low (glue cost per kilogram be 30~50 yuan), production efficiency it is high (continuous productive process, per a piece of projection screen from viscose glue into
Product, probably only need 10 minutes), the ability of environment resistant changing capability and mechanical experiment (it is wet can to resist 40 DEG C of harsh 95%RH by force
The High aititude ring of the hot and humid environment of degree, 60 DEG C of hot environment, -30 DEG C of low temperature environment and height above sea level more than 4000 meters
Border, the vibration experiment of HZ frequencies).
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice the disclosure invented here
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, without necessarily requiring or implying there are any between these entities or operation
This actual relation or order.The invention is not limited in the precision architecture for being described above and being shown in the drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim
System.
In this specification between each embodiment identical similar part mutually referring to.Invention described above is real
The mode of applying is not intended to limit the scope of the present invention..
Claims (15)
1. a kind of system of processing of projection screen, the projection screen includes optical diaphragm and backboard, it is characterised in that described to add
Work system includes：
Transmission platform, for transmitting the backboard along preset direction, in the top of the transmission platform, along the preset direction according to
It is secondary to be equipped with glue spreading apparatus and pressing device；
The glue spreading apparatus, for liquid glue to be coated uniformly on to the surface of the backboard；
The pressing device, for the optical diaphragm to be pressed together on the back plate surface coated with liquid glue；
The glue spreading apparatus includes gluing roller, and the outer surface of the gluing roller, which is evenly distributed with, multiple to be used to store the liquid
The reticulate structure of state glue.
2. the system as claimed in claim 1, it is characterised in that the reticulate structure includes the transverse direction along the gluing roller
And/or the equally distributed multiple strip projected parts structures in longitudinal direction.
3. the system as claimed in claim 1, it is characterised in that it is equal that the reticulate structure is included in the gluing roller outer surface
Multiple cellular bulge-structures of even distribution.
4. system as claimed in claim 2, it is characterised in that the glue spreading apparatus further includes：
First height sensor, first height sensor is fixed in the first fixing axle of the gluing roller, for examining
The height between the gluing roller and the transmission platform is surveyed, the gluing roller can be according to first height sensor
Testing result adjustment height.
5. the system as claimed in claim 1, it is characterised in that the pressing device includes：
Press roller, the pressing roller along the second fixing axle rotation, for along the preset direction by the optical diaphragm pressure
Close in the back plate surface coated with liquid glue.
6. system as claimed in claim 5, it is characterised in that the pressing device further includes：
Second height sensor, second height sensor is fixed in the second fixing axle of the pressing roller, for examining
The height between the pressing roller and the transmission platform is surveyed, the pressing roller can be according to second height sensor
Testing result adjustment height.
7. the system as claimed in claim 1, it is characterised in that the multiple the system also includes multiple pressure sensors
Pressure sensor is uniformly arranged on the contact surface of the transmission platform and the backboard, for detecting the backboard in the biography
The pressure produced on defeated platform.
8. the system as described in claim 1-7 any one, it is characterised in that the liquid glue is Reactive hot melt adhesive,
The system also includes：
Melt adhesive dispenser, the adhesive dispenser that melts is connected with the glue spreading apparatus, is for solid Reactive hot melt adhesive to be melted
Liquid, and the Reactive hot melt adhesive of liquid is delivered to the glue spreading apparatus by transmission pipeline.
9. system as claimed in claim 8, it is characterised in that the gluing roller and each point on the contact surface of the backboard
Distance to first fixing axle is equal, each point in the gluing roller in each reticulate structure to first fixing axle
Distance it is also equal.
10. system as claimed in claim 8, it is characterised in that on the contact surface of the pressing roller and the optical diaphragm
Each point to second fixing axle distance it is equal.
11. a kind of processing method of projection screen, the processing method is applied to the system of processing described in claim 1-10, its
It is characterized in that, including：
Step 1：Backboard is positioned on transmission platform, the transmission platform is used to transmit the backboard along preset direction；
Step 2：The liquid glue for being stored in glue spreading apparatus outer surface is coated uniformly on back plate surface, the glue spreading apparatus includes
Gluing roller, the outer surface of the gluing roller are evenly distributed with multiple reticulate structures for being used to store the liquid glue；
Step 3：Optical diaphragm is pressed together on the back plate surface coated with liquid glue.
12. method as claimed in claim 11, it is characterised in that the step 2 further includes：
The height between the gluing roller and the transmission platform is detected, and the painting rubber-surfaced roll is adjusted according to height detection result
The height of wheel.
13. method as claimed in claim 11, it is characterised in that the step 3 further includes：
The height between the pressing roller and the transmission platform is detected, and the roller stitcher is adjusted according to height detection result
The height of wheel.
14. method as claimed in claim 11, it is characterised in that the method further includes：
Step 4：The pressure that the backboard produces on the transmission platform is detected, and the painting is adjusted according to pressure sensing result
Rubber-surfaced roll wheel and/or the height for pressing roller.
15. the method as described in claim 11-14 any one, it is characterised in that before the step 1, the method
Further include：
It is liquid that solid Reactive hot melt adhesive, which is melted, and the Reactive hot melt adhesive of liquid is delivered to institute by transmission pipeline
State glue spreading apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148107.0A CN107908067B (en) | 2017-11-17 | 2017-11-17 | Projection screen processing method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148107.0A CN107908067B (en) | 2017-11-17 | 2017-11-17 | Projection screen processing method and system |
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| Publication Number | Publication Date |
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| CN107908067A true CN107908067A (en) | 2018-04-13 |
| CN107908067B CN107908067B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711148107.0A Active CN107908067B (en) | 2017-11-17 | 2017-11-17 | Projection screen processing method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347754A (en) * | 2020-03-12 | 2020-06-30 | 成都菲斯特科技有限公司 | Automatic full-laminating device and method for optical projection screen |
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| CN107908067B (en) | 2021-05-28 |
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