CN101362125A - Cream applying device and method - Google Patents
Cream applying device and method Download PDFInfo
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- CN101362125A CN101362125A CNA2008101449027A CN200810144902A CN101362125A CN 101362125 A CN101362125 A CN 101362125A CN A2008101449027 A CNA2008101449027 A CN A2008101449027A CN 200810144902 A CN200810144902 A CN 200810144902A CN 101362125 A CN101362125 A CN 101362125A
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- screw rod
- rotating speed
- smearing
- creme
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Abstract
A paste device (1) has a painting head (5) injecting the creme in the amount corresponding to the rotating speed of the screw (5c) from the nozzle (5a) to the painting object (K) through the screw (5c); a moving mechanism (3, 4) causing the painting object (K) and the nozzle (5) oppositely move based on the coating pattern having straight line portion and flexion flexure; a mechanism, from the time between the rotating start moment of the screw (5c) to the relative moving start moment of the painting object (K) and the nozzle (5), controlling the rotating speed of the screw (5c) to make it be less than the rotating speed of the screw (5c) when painting the straight line portion, through the condition of the time, controlling the rotating speed of the screw corresponding to the relative moving speed of the painting object (K) and the nozzle (5).
Description
Technical field
The present invention relates to smear the plaster coating device of creme and be coated with the cream method to smearing object.
Background technology
Plaster coating device is used to the manufacturing of various devices such as LCD panel.This plaster coating device has smearing the applying head of object ejection creme, makes this applying head on one side and smear object to relatively move, and cream is spread upon smear on the object on one side, and formation is stipulated smears pattern (cream pattern).
The applying head (for example, with reference to Japanese kokai publication hei 4-49108 communique) of ejection creme has been proposed to press by the rotation of screw rod as applying head.The applying head of this screw has: the cylinder part with the nozzle that is used to spray creme; Can be rotatably set in the screw rod of this cylinder part inside; Make the ejection motor of this screw rod rotation.The creme that this applying head is promptly measured with the rotating speed (ejection rotating speed of motor) of screw rod to the rotation amount of smearing object ejection and screw rod from nozzle accordingly according to the rotation of screw rod.
Such plaster coating device is when making LCD panel etc., for making 2 baseplate-laminatings, is substrate for the object of smearing that moves, and smears sealing and the close-burning creme with sealant etc. in the mode of the viewing area that surrounds LCD panel.At this moment, creme is the starting point (describing starting point) of describing the starting position and the terminal point of describing end position (describing end point) are connected and aim at and by being smeared on the substrate.
At this, for example, as shown in Figure 7, the size of the starting point O that smears pattern P on the substrate K (cream sectional area) produces the gap than design load (scope of design of regulation) hour between starting point O and the terminal point F, liquid crystal such as can cause when the liquid crystal filling to spill.In addition, as shown in Figure 8, when the size of the starting point O that smears pattern P on the substrate K was bigger than design load, creme spilt into the viewing area when fitting.For preventing the generation of these unfavorable conditions, must adjust the size of starting point O.
The adjustment of above-mentioned size, as shown in Figure 9, be to change this time T 1, make the size of starting point O identical thus with design load by setting-up time poor (time T 1) (with reference to two chain-dotted lines among Fig. 9) between the mobile zero hour of rotation zero hour of screw rod and substrate K.And the rotating speed of screw rod (waveform B 2 among Fig. 9) is even being configured to the speed of describing (waveform B 1 among Fig. 9) changes, and cream sectional area (applying amount of the unit interval of cream) also is constant.At this, for example, when making time T 1 elongated, the accelerating part in the waveform B 2 of the rotating speed of screw rod direction D1 left moves (with reference to the chain-dotted line among Fig. 9), and the ejection time under the halted state of substrate K is extended, and is big thereby the size of starting point O becomes.On the other hand, when time T 1 was shortened, ejection was moved to right D2 with the accelerating part in the waveform B 2 of motor speed, and the ejection time under the halted state of substrate K is shortened, thereby the size of starting point O diminishes.
Yet, changed rotation zero hour from screw rod during time T 1 to the mobile zero hour of substrate K, for example, in the waveform B 2 of the rotating speed of the waveform B 1 of the speed of describing shown in Figure 9 (translational speed of substrate K) and screw rod, when time T 1 was elongated, the accelerating part of waveform B 2 is direction D1 (with reference to the chain-dotted line among Fig. 9) left.Thus, among the acceleration region T2 when the speed of describing reaches maximum (smearing the speed of describing of the straight line portion of pattern), the relation of describing between the rotating speed of speed and screw rod (ratio) changes.Variation according to this relation, cream sectional area in acceleration region T2 (applying amount of the unit interval of cream) becomes non-constant, thereby pattern cut-out, the fluctuation of cream sectional area can take place in acceleration region T2, and the increase of cream sectional area (applying amount) especially can take place, then not preferred.
Summary of the invention
The purpose of this invention is to provide a kind of plaster coating device and be coated with the cream method, can prevent that the pattern that causes because of the relationship change between the rotating speed of speed of describing in the acceleration region of describing speed and screw rod from cutting off, the generation of creme sectional area fluctuation.
The 1st feature of embodiments of the present invention is in plaster coating device, to have: the rotation by screw rod is from the applying head of nozzle to the creme of smearing the object ejection amount corresponding with the rotating speed of above-mentioned screw rod; Make the above-mentioned travel mechanism that object and above-mentioned applying head relatively move of smearing based on the pattern of smearing with straight line portion and sweep; From rotation zero hour of above-mentioned screw rod in the above-mentioned time the zero hour of relatively moving of smearing object and above-mentioned applying head, the rotating speed of controlling above-mentioned screw rod makes the rotating speed of its above-mentioned screw rod when carrying out the smearing of above-mentioned straight line portion little, passed through under the situation of above-mentioned time, controlled the mechanism of the rotating speed of above-mentioned screw rod accordingly with the above-mentioned relative moving speed of smearing object and above-mentioned applying head.
The 2nd feature of embodiments of the present invention is, in being coated with the cream method, have following steps: use rotation by screw rod from the applying head of nozzle to the creme of smearing the object ejection amount corresponding with the rotating speed of above-mentioned screw rod, make and above-mentionedly smear object and above-mentioned applying head relatively moves based on the pattern of smearing, and creme is spread upon above-mentioned operation of smearing object with straight line portion and sweep; From rotation zero hour of above-mentioned screw rod in the above-mentioned time the zero hour of relatively moving of smearing object and above-mentioned applying head, the rotating speed of controlling above-mentioned screw rod makes the rotating speed of its above-mentioned screw rod when carrying out the smearing of above-mentioned straight line portion little, passed through under the situation of above-mentioned time, controlled the operation of the rotating speed of above-mentioned screw rod accordingly with the above-mentioned relative moving speed of smearing object and above-mentioned applying head.
Description of drawings
Fig. 1 is the stereogram of schematic configuration of the plaster coating device of expression one embodiment of the present invention.
Fig. 2 is the cutaway view of schematic configuration that expression has the applying head of plaster coating device shown in Figure 1.
Fig. 3 is the schematic diagram of smearing pattern of the creme smeared of expression plaster coating device shown in Figure 1.
Fig. 4 is the speed of describing that is used for illustrating plaster coating device shown in Figure 1, the rotating speed of screw rod and the key diagram of the relation between the time.
Fig. 5 is the cutaway view that the nozzle segment of amplification applying head shown in Figure 2 shows.
Fig. 6 is the cutaway view that the nozzle segment of amplification applying head shown in Figure 2 shows.
Fig. 7 is the schematic diagram of an example of smearing pattern of expression creme.
Fig. 8 is the schematic diagram of an example of smearing pattern of expression creme.
Fig. 9 is the key diagram that is used to illustrate an example of the rotating speed of the speed of describing, screw rod and the relation between the time.
The specific embodiment
Referring to figs. 1 through Fig. 6 one embodiment of the present invention is described.
As shown in Figure 1, the plaster coating device 1 of embodiments of the present invention has: with level (among Fig. 1, along X-direction and with the state of the Y direction of its quadrature) be mounted with and smear the step 2 that object is substrate K; Keep this step 2 and make its y-axis shift actuation mechanism 3 along Y direction; Make step 2 along X-axis travel mechanism 4 that X-direction moves by this y-axis shift actuation mechanism 3; Substrate K on step 2 smears a plurality of applying heads 5 of the creme (for example, having sealing and close-burning creme) of sealant etc. respectively; Make these applying heads 5 along a plurality of Z axle travel mechanisms 6 that Z-direction moves respectively; Z axle travel mechanism 6 by correspondence with can support each applying head 5 along the mode that X-direction moves and make it along an X-axis travel mechanism 7 that X-direction moves; Support the support unit 8 of this X-axis travel mechanism 7; The pallet 9 of supporting X-axis travel mechanism 4 and support unit 8 The; Control the control part 10 of each parts.
Step 2, and is set up in the mode that can move on Y direction on y-axis shift actuation mechanism 3 by lamination.This step 2 moves along Y direction because of y-axis shift actuation mechanism 3.And, on the loading surface of step 2, be mounted with substrate K such as glass substrate by deadweight, but be not limited thereto, for example,, mechanisms such as electrostatic chuck, absorption chuck can be set also for keeping this substrate K.
Y-axis shift actuation mechanism 3 is travel mechanisms that guiding step 2 moves on Y direction.This y-axis shift actuation mechanism 3 is set in the X-axis travel mechanism 4, is electrically connected with control part 10.And, as y-axis shift actuation mechanism 3 for example use with motor as the feed screw travel mechanism of drive source, with linear electric machine as the linear electric machine travel mechanism of drive source etc.
X-axis travel mechanism 4 is travel mechanisms that guiding y-axis shift actuation mechanism 3 moves on X-direction.This X-axis travel mechanism 4 is set on the pallet 9, is electrically connected with control part 10.And, as X-axis travel mechanism 4 for example use with motor as the feed screw travel mechanism of drive source, with linear electric machine as the linear electric machine travel mechanism of drive source etc.
As shown in Figure 2, applying head 5 has: the cylinder part 5b with the nozzle 5a that is used to spray creme; Rotatably be arranged on the screw rod 5c of this cylinder part 5b inside; Make the ejection motor 5d of this screw rod 5c rotation; Link screw rod 5c and ejection binding parts 5e with motor 5d; The storage container 5f of storage creme; The supply pump 5g that connects cylinder part 5b and storage container 5f.
At this, between the interior week of cylinder part 5b (inwall) and screw rod 5c, be formed with the spiral helicine liquid chamber that is full of creme.When this liquid chamber filling creme, prepare the ejection action.At first, gas is supplied with by the peristome H2 that gas supply part holds 30 device 5f from storage.Under this state, make screw rod 5c rotation with motor 5d by ejection.At this moment, the rotation of screw rod 5c lasts till that creme is full of liquid chamber.And the creme that is rotated in of screw rod 5c only continues the stipulated time from nozzle 5a ejection back.Thus, can in liquid chamber, not make creme be full of liquid chamber in the cylinder part 5b residual air.
After this preparation ejection action, when the screw rod 5c in the cylinder part 5b rotates with the rotation of motor 5d accordingly with ejection, be filled in the interior week of cylinder part 5b and the creme of the liquid chamber between the screw rod 5c and spray from nozzle 5a.At this moment, the creme of the amount corresponding with the rotation amount of screw rod 5c sprays from nozzle 5a.For example, screw rod 5c when rotation, spray from nozzle 5a with the creme of the pitch equivalent of the threaded portion N of this screw rod 5c.The spray volume of the unit interval of this creme and ejection are that the rotating speed of screw rod 5c is directly proportional with the rotating speed (rotation amount of unit interval) of motor 5d, thereby the rotating speed by change screw rod 5c can be adjusted the spray volume from the unit interval of the creme of nozzle 5a.Like this, applying head 5 is mechanically released creme by screw rod 5c, thereby can access the spray volume that is directly proportional with the rotating speed (rotation amount) of screw rod 5c.
Get back to Fig. 1, a Z axle travel mechanism 6 be supporting applying head 5 and make applying head 5 with the Z-direction of horizontal plane quadrature promptly with respect to step 2 near away near the travel mechanism that moves on away from direction.And, as a Z axle travel mechanism 6 for example use with motor as the feed screw travel mechanism of drive source, with linear electric machine as the linear electric machine travel mechanism of drive source etc.
X-axis travel mechanism 7 is that to support each applying head 5 respectively and make these applying heads 5 in the mode that can move on X-direction be the travel mechanism that support unit 8 moves along X-direction.And, as an X-axis travel mechanism 7 for example use with motor as the feed screw travel mechanism of drive source, with linear electric machine as the linear electric machine travel mechanism of drive source etc.
Support unit 8 is that supporting head X-axis travel mechanism 7 is the pillar of the door type of each applying head 5.In this support unit 8, its extension 8a is positioned along X-direction, and the 8b of its foot is fixed on the upper surface of pallet 9 and is arranged on the pallet 9.And an X-axis travel mechanism 7 is set at the front surface (among Fig. 1) of extension 8a.
Pallet 9 has: the flat substrate 9a in four limits; Support 4 pillar 9b of this substrate 9a.Upper surface at substrate 9a is mounted with X-axis travel mechanism 4 and support unit 8.And each pillar 9b has the conduct function of the foot of supporting substrates 9a flatly.
Control part 10 has: the microcomputer of each parts is controlled in the concentrated area; Store the storage part (all not shown) of the smear information relevant, various programs etc. with being coated with cream.The information of smearing comprise with regulation smear pattern P 1, relevant information such as the rotating speed of describe speed (translational speed of substrate K), screw rod 5c (ejection with the rotating speed of motor 5d).
This control part 10 is based on the information of smearing, various program, and control y-axis shift actuation mechanism 3, X-axis travel mechanism 4 and an X-axis travel mechanism 7 make the nozzle 5a of each applying head 5 and the substrate K on the step 2 relatively move abreast along the surface of substrate K.And, on the nozzle 5a of applying head 5, be provided with the equidistant analyzer of laser extensometer (not shown) integratedly.This map ranging device measure the substrate K on step 2 the surface sow discord distance.Control part 10 carries out FEEDBACK CONTROL according to the distance of sowing discord that map ranging device is measured, and guarantees that thus the gap between the surface of nozzle 5a and substrate K is predetermined gap (clearance control).
At this, as shown in Figure 3, the circumference of the substrate K of plaster coating device 1 on step 2 is smeared creme, describing 1 when smearing pattern P 1, rotation speed change pattern (waveform B 4 among Fig. 4) the conduct information of smearing of describing velocity variations pattern (waveform B 3 among Fig. 4) and screw rod 5c (ejection motor 5d) shown in Figure 4 is stored in the storage part.Plaster coating device 1 based on comprise describe velocity variations pattern and screw rod 5c the rotation speed change pattern in the interior information of smearing, the circumference of the substrate K on the step 2 is for example smeared creme to wire clockwise, describes the rectangular-shaped pattern P 1 of smearing.And, also have plaster coating device 1 to describe the identical situation of smearing pattern side by side by each applying head 5.
In smearing the straight line portion S of pattern P 1, in order to shorten the time of describing, the speed of describing is set on hypervelocity ground, at the sweep of smearing pattern P 1 is among the C1～C4 of angle part, in order to describe creme with the uniform applying amount of minor radius, make and describe speed and slow down, thereby during by angle part C1～C4, produce the anxious of the speed of describing and slow down and anxious the acceleration.Thus, must reduce with matching and increase applying amount with this variation of describing speed from the creme of nozzle 5a.
The setting of applying amount is carried out in the following order.At first, the speed of describing Va among the setting straight line portion S and the speed of the describing Vb among the C1～C4 of angle part.This setting is that input parts such as the touch pad that is connected with control part 10 by the operation of operator for example, keyboard carry out.Usually, the speed of the describing Va among the straight line portion S is configured to make the maximum speed that y-axis shift actuation mechanism 3 that substrate K and nozzle 5a relatively move and X-axis travel mechanism 4 are allowed.The speed of describing Vb among the C1～C4 of angle part is configured to the favor speed that experience or experiment obtain (for example, not smearing the outstanding speed of the live width, thickness etc. of pattern P 1).
Secondly, set the rotating speed (the ejection rotating speed of motor 5d) of screw rod 5c.This rotating speed is obtained by calculating.The spray volume of the unit interval of creme is to calculate by the mechanical realization of the pitch of screw rod 5c, diameter etc. and the rotating speed of screw rod 5c.The applying amount of the creme that should smear based on the unit interval and describe speed Va, Vb in respectively describing speed Va, Vb, can be calculated the spray volume of the creme that the unit interval should spray.Respectively describe rotating speed Ra, the Rb of the screw rod 5c speed Va, the Vb from this spray volume inverse of calculating.Like this, each rotating speed Ra, Rb of respectively describing speed Va, Vb and screw rod 5c are set.
Secondly, the action of smearing that such plaster coating device 1 carried out is described.At this, the circumference that plaster coating device 1 is as described above spread upon the substrate K on the step 2 with creme is described 1 situation of smearing pattern P 1 and is described (with reference to Fig. 3).Plaster coating device 1 based on comprise describe velocity variations pattern and screw rod 5c the rotation speed change pattern in the interior information of smearing, the circumference of the substrate K on the step 2 is for example deasil smeared creme with wire, describes the rectangular-shaped pattern P 1 of smearing.
At first, control part 10 control y-axis shift actuation mechanism 3, X-axis travel mechanism 4 and an X-axis travel mechanism 8, make the nozzle 5a of applying head 5 move to starting point (describing to open a little) O directly over (position relative) with starting point O, and control head Z axle travel mechanism 6, up to and the measurement result of map ranging device make the gap between the surface of nozzle 5a and substrate K become predetermined gap 15 accordingly, and the nozzle 5a of applying head 5 is descended.
Secondly, (waveform B 4 among Fig. 4) as shown in Figure 4, control part 10, only in time (rotational time in advance) T1 of the rotation zero hour to mobile zero hour of substrate K of screw rod 5c, the rotating speed of control screw rod 5c (ejection with the rotating speed of motor 5d), the rotating speed Ra of the screw rod 5c when making it than the smearing of the straight line portion S (with reference to Fig. 3) that smears pattern P 1 is little.At this especially, control part 10, the following rotating speed Rc of rotating speed Rb of the screw rod 5c during with the smearing of angle part C1～C4 (with reference to Fig. 3) of smearing pattern P 1, the rotating speed of T3 inner control screw rod 5c is constant at the appointed time.And stipulated time T3 is in the predefined time (certain rotational time) in the time T 1 of the rotation zero hour to mobile zero hour of substrate K of screw rod 5c.This stipulated time T3 can the person's of being operated change.For example, the input part of the touch pad, keyboard etc. that are connected with control part 10 by operation of operator changes stipulated time T3.
At this, smearing the terminal point F of pattern P 1, usually, make the opposite direction rotation of the direction of rotation of screw rod 5c to the time, the generation of prevent drawing thus, reeling off raw silk from cocoons etc. with ejection.According to the counter-rotating of screw rod 5c at this moment, the creme P2 in the nozzle 5a is introduced into along the internal direction of cylinder part 5b.Thus, as shown in Figure 5, the front end that is created in nozzle 5a does not have the state of creme P2.Therefore, control part 10 makes screw rod 5c only rotate stipulated time T3 with certain rotating speed Rc as described above, and the creme P2 in the nozzle 5a is moved to the front end of nozzle 5a.At this moment, under the state that substrate K stops, screw rod 5c accelerates to rotating speed Rc from rotating speed 0 (zero), with this rotating speed Rc rotation stipulated time T3.Therewith correspondingly, as shown in Figure 6, the creme P2 in the cylinder part 5b shown in Figure 5 moves to the front end of nozzle 5a.
And,, can suitably be adjusted at the spray volume of the creme P2 that sprays under the halted state of substrate K by change stipulated time T3.Thus, the size (cream sectional area) of smearing the starting point O of pattern P 1 can be adjusted in the scope of design of regulation, its result can prevent unfavorable conditions such as overflowing of the spilling of liquid crystal, creme.
Afterwards, (waveform B 4 among Fig. 4) as shown in Figure 4, control part 10 is under the situation of having passed through stipulated time T3, control X-axis travel mechanism 4,10 substrate K on the step 2 are moved to the positive direction (right of the X-axis among Fig. 1) of X-axis with respect to nozzle 5a, promptly describe speed (waveform B 3 among Fig. 4) with the relative moving speed of substrate K and applying head 5 and control the rotating speed of screw rod 5c (ejection with the rotating speed of motor 5d) accordingly and smear.And, as the speed of describing can be X-direction relative moving speed, Y direction relative moving speed and with the relative moving speed of X-direction and the synthetic relative moving speed that forms of relative moving speed of Y direction etc.
At this moment, it is the motor synchronous ground rotation of screw rod 5c and X-axis travel mechanism 4 with motor 5d that control part 10 makes the ejection of applying head 5, and makes applying head 5 ejection cremes.That is, control part 10 is when the mobile beginning of substrate K, with the increase of describing speed (translational speed of substrate K) rotating speed of screw rod 5c is increased.Substrate K begins to accelerate to and smear the speed of describing (maximum) Va that the straight line portion S of pattern P 1 sets accordingly from halted state.At this moment, the variation of the motor speed of screw rod 5c and X-axis travel mechanism 4 is synchronous, and is increased to and smears rotating speed (maximum) Ra that the straight line portion S of pattern P 1 sets accordingly from rotating speed Rc.
In near the scope Wa starting point O that smears pattern P 1 (with reference to Fig. 4), it is lower than the speed of the describing Va in the scope Ws (with reference to Fig. 4) of the straight line portion S that smears pattern P 1 to describe speed (translational speed of substrate 25K).In this low-speed region, the spray volume of the unit interval of creme lacks than the spray volume of the unit interval of the creme in the high-speed region corresponding with straight line portion S, and the applying amount of unit length is identical with the applying amount of high-speed region.Thus, near the scope Wa starting point O, can suppress applying amount and increase, thereby can prevent to smear live width, thickness etc. outstanding of pattern P 1.
Secondly, when control part 10 is the side nearby of the 1st angle part C1 at nozzle 5a near sweep, make the speed of describing (translational speed of substrate K) Va decelerate to the speed of the describing Vb that sets accordingly with the low-speed region of the 1st angle part C1.Simultaneously, control part 10 is to control y-axis shift actuation mechanism 3 accordingly with this deceleration of describing speed (translational speed of substrate K), and make ejection with the rotation of motor 5d be the rotation of screw rod 5c and X-axis travel mechanism 4 motor deceleration synchronization decelerate to rotating speed Rb from rotating speed Ra.
And control part 10 is when nozzle 5a arrives the 1st angle part C1, and the speed of describing (translational speed of substrate K) Vb is slowed down, and the substrate K that moves on X-direction is stopped.Control part 10 is side by side to control y-axis shift actuation mechanism 3 with the beginning of the deceleration of substrate K, and make the substrate K on the step 2 move (accelerate to gradually and describe speed Vb) to the positive direction (the last direction of the Y direction among Fig. 1) of Y-axis with respect to nozzle 5a, so that in the describing of the 1st angle part C1, make the translational speed of substrate K constant.At this moment, will to spray the rotation with motor 5d be that the rotation of screw rod 5c maintains rotating speed Rb to control part 10.In near the 1st angle part C1 the scope Wc (with reference to Fig. 4), it is lower than the speed of the describing Va in the scope Ws (with reference to Fig. 4) of the straight line portion S that smears pattern P 1 to describe speed (translational speed of substrate K).In this low-speed region, the spray volume of the unit interval of creme lacks than the spray volume of the unit interval of the creme in the high-speed region corresponding with straight line portion S, and the applying amount of unit length is identical with the applying amount of high-speed region.Thus, near the scope Wc the 1st angle part C1, can suppress applying amount and increase, thereby can prevent to smear the expansion of the live width, thickness etc. of pattern P 1.In addition, near the 1st angle part C1, make the relative moving speed of substrate K and nozzle 5a lower than the relative moving speed of straight line portion S, thereby can prevent the up-down vibration of the applying head 5 that the acceleration and deceleration by the substrate K on the 1st angle part C1 cause, and can prevent that near the 1st angle part C1 pattern from cutting off, the generation of cream sectional area fluctuation (fluctuation of applying amount) etc.
Secondly, control part 10 is that the 2nd angle part C2, the 3rd angle part C3 and the 4th angle part C4 carry out the same control with the 1st angle part C1 at each sweep, creme is spread upon substrate K go up up to the terminal point of smearing pattern P (describing end point) F.And near the scope Wb terminal point F (with reference to Fig. 4), control part 10 also makes the motor of X-axis travel mechanism 4 slow down and synchronously, and making ejection gradually is that the rotation of screw rod 5c is slack-off with the rotation of motor 5d, the spray volume of minimizing creme.Thus, near terminal point F, can suppress applying amount and increase, thereby can prevent to smear the expansion of the live width, thickness etc. of pattern P 1.
At last, control part 10 is after smearing end, control y-axis shift actuation mechanism 3, X-axis travel mechanism 4 and an X-axis travel mechanism 8, make step 2 move up to applying head 5 not with step 2 on the relative retreating position of substrate K, the standby during exchange of the substrate K on step 2.When the exchange of substrate K finishes, repeat the above-mentioned action of smearing.And, on substrate K, smear a plurality of when smearing pattern P 1, control part 10 is after 1 is smeared the smearing of pattern P 1, control y-axis shift actuation mechanism 3, X-axis travel mechanism 4 and an X-axis travel mechanism 8, make the nozzle 5a of applying head 5 move to next starting point O directly over, and repeat the above-mentioned action of smearing.
Such smearing in the action, the rotating speed Ra that smears the screw rod 5c under the stipulated time T3 situation of straight line portion S that the waveform B 4 of the rotating ratio of screw rod 5c rotating speed is as shown in Figure 4 only smeared pattern P 1 like that is little, is preferably with the rotating speed Rc below the rotating speed Rb of the screw rod 5c under the situation of smearing of angle part C1～C4 of smearing pattern P 1 to rotate consistently.Thus, as shown in Figure 6, the creme P2 in the cylinder part 5b shown in Figure 5 moves to the front end of nozzle 5a.Afterwards, when the stipulated time T3, with the relative moving speed (waveform B 3 of the speed of describing shown in Figure 4) of substrate K and applying head 5 accordingly according to the rotating speed of the waveform B 4 control screw rod 5c of rotating speed shown in Figure 4.
At this, for example, under the situation of overflowing the size of adjusting starting point O that prevents the spilling of liquid crystal, creme, made when the stipulated time, T3 was elongated, the ejection time under halted state of substrate K is extended, and is big thereby the size of starting point O (creme sectional area) becomes.On the other hand, made when the stipulated time, T3 shortened, the ejection time under halted state of substrate K is shortened, thereby the size of starting point O diminishes.Like this, even change stipulated time T3, among acceleration region (acceleration time) T2 when the speed of describing arrives the speed of describing (maximum) of straight line portion S, the relation of describing between the rotating speed of speed and screw rod 5c (ratio) does not change.Thus, can remain between the rotating speed of the speed of describing among the acceleration region T2 and screw rod 5c relation unchangeably, the size of the starting point O of pattern P 1 is smeared in adjustment, thereby the creme sectional area of adjusting among the acceleration region T2 (applying amount of the unit interval of creme) becomes easily, can prevent from acceleration region T2 pattern cut-out, the fluctuation of creme sectional area to take place.
As mentioned above, according to the embodiment of the present invention, the rotating speed of control screw rod 5c, make its rotating speed Ra little (especially than the screw rod 5c under the situation of smearing of the straight line portion S that in from rotation zero hour of screw rod 5c to the time T 1 of the zero hour that relatively moves of substrate K and applying head 5, smears pattern P 1, the rotating speed of control screw rod 5c, make in its stipulated time T3 in this time T 1 constant), passed through under the situation of time T 1, control the rotating speed of screw rod 5c accordingly with the relative moving speed of substrate K and applying head 5, the relation that among the acceleration region T2 of the speed of describing this described between the rotating speed of speed and screw rod 5c is adjusted the size of the starting point O that smears pattern P 1 unchangeably, thereby can prevent that the pattern that is caused by the relationship change between the rotating speed of speed of describing among the acceleration region T2 that describes speed and screw rod 5c from cutting off, the generation of creme sectional area fluctuation.Its result can be prevented LCD panel overflowing of the spilling of liquid crystal, creme etc., quality better.
Especially, with the rotating speed Rc below the rotating speed Rb of the screw rod 5c under the situation of smearing of angle part C1～C4 of smearing pattern P, control the rotating speed of screw rod 5c consistently, ejection is rotated with the rotating speed Rc below the rotating speed Rb at angle part C1～C4 place with motor 5d thus, in nozzle 5a, translational speed towards the creme of the preceding extreme direction of nozzle 5a can be suppressed to be the speed of control easily, thereby can carry out the mobile control of creme accurately.Its result for example, even under the high situation of the viscosity of creme, also can make creme stably spray from nozzle 5a, can prevent the unfavorable condition that broken string etc. takes place pattern P 1 of smearing of the applying amount fluctuation of creme, the creme described.
In addition, ejection makes screw rod 5c rotation with motor 5d, mechanically extrude the creme that promptly sprays the amount (volume) that the rotation amount with motor 5d is directly proportional with the rotation amount of screw rod 5c thus, even thereby along with the viscosity of the variation creme of environment temperature changes, and the residual amount of the creme in the storage container 5f reduces, by keeping the invariablenes turning speed of screw rod 5c, also can keep spray volume consistently from the unit interval of the creme of nozzle 5a.And, because the rotating machinery ground by screw rod 5c extrudes creme from nozzle 5a, so, can responsiveness increase and decrease the spray volume of the unit interval of creme well by the ejection that the makes screw rod 5c rotation rotation speed change of motor 5d.
In addition, in this class applying head only, during gap variation between nozzle 5a and the substrate K, from the ejection resistance change of the creme of nozzle 5a, because of this influence spray volume variation of creme by gas pressure ejection creme.But, in embodiments of the present invention, the extrusion of threaded portion N machinery according to the screw rod 5c of rotation, creme is sprayed from nozzle 5a, thereby this part the creme that is extruded by threaded portion N is sprayed from nozzle 5a, and, can not be subjected to the change in gap from the spray volume of the creme of nozzle 5a, can always mechanically extrude the creme of constant basis.Its result can spread upon creme on the substrate K with uniform applying amount, thereby can improve the precision of smearing to the creme of substrate K.Therefore, can make and prevented that liquid crystal from spilling, the LCD panel intrusion of air, quality better.In addition, according to above-mentioned, only do not need to make the control (clearance control) that creme is necessary under the situation of nozzle 5a ejection, keep the clearance constant between nozzle 5a and the substrate K30, or reduce the control frequency, thereby realize the simplification of control by gas pressure.In addition, thus, can save or reduce the needed time of processing of clearance control, thereby can shorten the needed time of smearing of creme, and raise the efficiency.
And, use the rectangular-shaped pattern P 1 of smearing when creme is applied to substrate K, near the starting point O, near the C1～C4 of angle part and near the terminal point F, compare the relative moving speed that makes between nozzle 5a and the substrate K with straight line portion S slack-off, thereby ejection is that the rotating speed of screw rod 5c is slack-off with the rotating speed of motor 5d, and the spray volume from unit interval of the creme of nozzle 5a tails off thus.At this moment, the rotation by screw rod 5c is mechanically extruded, thereby can responsiveness controls the spray volume from the unit interval of the creme of nozzle 5a well.Its result can describe to smear pattern P 1 by what uniform applying amount constituted on substrate K.
And, near near smearing in process starting point O and the C1～C4 of angle part, under the situation that near the relative moving speed that makes nozzle 5a and substrate K the terminal point F slows down, making ejection is that the rotating speed of screw rod 5c and the rotating speed of motor of y-axis shift actuation mechanism 3 and X-axis travel mechanism 4 are slowed down synchronously with the rotating speed of motor 5d.Its result, can prevent as the prior art near near the applying amount the starting point O, the C1～C4 of angle part, near terminal point F creme to smear quantitative change many, thereby can on substrate K, describe to smear pattern P 1 with uniform applying amount.
(other embodiments)
And, the invention is not restricted to above-mentioned embodiment, in the scope that does not break away from its purport, can carry out various changes.
For example, in the above-described embodiment, substrate K is moved with respect to applying head 5, but be not limited thereto, applying head 5 is moved with respect to substrate K, and substrate K and applying head 5 are relatively moved.Therefore, applying head 5 and substrate K also can move mutually in the opposite direction.In this case, if identical relative moving speed is compared with the situation that substrate K is moved, the translational speed of substrate K and applying head 5 is reduced by half.Thus, diminish by the mobile inertia force that brings of step 2 and applying head 5, thereby can reduce because of the acceleration of step 2 and applying head 5 or the vibration that deceleration causes.Its result can smear shape along the top of smearing pattern of X-direction and terminal accurately, smear the shape of the angle part of smearing pattern of direction conversion with desired shape, thereby can the good LCD panel of quality bills of materials.
In addition, in the above-described embodiment, near the example of the relative moving speed deceleration that makes substrate K and nozzle 5a the C1～C4 of angle part has been described, but has been not limited thereto, also can for example directly use the relative moving speed of straight line portion S.In this case, because of the y-axis shift actuation mechanism 3 at angle part C1～C4 place and the acceleration and deceleration of X-axis travel mechanism 4, make applying head 5 produce up-down vibration, even thus from the ejection resistance change of the creme of nozzle 5a, screw rod 5c also can make the creme that is extruded by the machinery pushing of this threaded portion N from nozzle 5a ejection, thereby can prevent the spray volume variation from the creme of nozzle 5a.Thus, can smear creme with required applying amount to substrate K, and, near the C1～C4 of angle part, also can with uniform applying amount wire smear creme, thereby can form the high-precision pattern P 1 of smearing.
In addition, in the above-described embodiment, make screw rod 5c only rotate stipulated time T3 with constant rotating speed Rc, but be not limited thereto, also can for example make the rotating speed of screw rod 5c in time T 1, slowly be increased to rotating speed Rc etc., also can make the rotation speed change of screw rod 5c.Key is preferably can control the rotating speed of screw rod 5c, so that be introduced into the front end of the creme P2 in the nozzle 5a arrives nozzle 5a in official hour T1 front end.
And, in the above-described embodiment, make screw rod 5c only rotate stipulated time T3 with constant rotating speed Rc, but be not limited thereto, also can for example make the anglec of rotation θ c of screw rod 5c rotation regulation.That is, between the anglec of rotation θ of the rotating speed of screw rod 5c (rotating speed Rc), the time (stipulated time T3) that makes screw rod 5c rotation and screw rod 5c, has the relation of anglec of rotation θ=rotating speed Rc * stipulated time T3.Therefore, the situation that makes screw rod 5c only rotate stipulated time T3 with constant rotating speed Rc is replaced as and makes screw rod 5c only rotate the anglec of rotation θ c of regulation, thereby also can control the rotation of screw rod 5c with anglec of rotation θ.
In addition, in the above-described embodiment, having illustrated and carried out the example of clearance control, but be not limited thereto, also can be for example to save clearance control.In this case, can not carry out clearance control fully yet, can only when nozzle 5a is positioned at starting point O, carry out clearance control yet, and pattern describe omit clearance control in the process.
And, in the above-described embodiment, illustrated screw rod 5c has been configured to the example (with reference to Fig. 2) that its lower end arrives the bottom (leading section) of the nozzle 5a that is provided with cylinder part 5b, but be not limited thereto, also can for example screw rod 5c be configured to be provided with between the bottom of its lower end and cylinder part 5b space (than space big among Fig. 2) to a certain degree.Screw rod in this case also is arranged in the cylinder part, and the upper end links with the rotating shaft of ejection with motor by linking parts, and the bottom is as free end.Especially, at the free end of screw rod be provided with between the bottom of nozzle of cylinder part, have, in this interval, can store creme than the big interval, interval between the bottom that goes out end and cylinder part 5b certainly of screw rod 5c shown in Figure 2.
And, in the above-described embodiment, illustrated that the threaded portion N of screw rod 5c is one a example, but be not limited thereto, also can be that for example threaded portion N is more than two a plurality of.Like this, the threaded portion N with pitch P is provided with under the situation of a plurality of (n bars), and helical pitch L becomes L=nP.Be provided with at uniform pitch under the situation of screw rod of n bar threaded portion N with the pitch P identical with screw rod 5c with a threaded portion N, for obtaining and the identical spray volume of screw rod 5c with a threaded portion N, the rotating speed that the rotating speed of necessary screw rod is promptly sprayed with motor 5d is 1/n.Thus, because the ejection of rotation drive screw reaches 1/n with the rotating speed of motor 5d, so be delivered to creme etc. according to the friction of screw rod and creme or the heating that sprays with motor 5d, creme generates heat and suppresses sclerosis, deterioration, and, can prevent the generation of the discarded loss that brings of creme of high price.
In addition, in the above-described embodiment, be provided with a plurality of applying heads 5, but be not limited thereto, also an applying head can for example be set, its number is unqualified.
At last, in the above-described embodiment, use has sealing, close-burning sealant as creme, but be not limited thereto, also can use and for example have sealing and close-burning any one material etc., also can use creme, also not necessarily must have sealing and caking property as creme of the present invention with other character.
Claims (6)
1. plaster coating device is characterized in that having:
Applying head, its rotation by screw rod from nozzle to the creme of smearing the object ejection amount corresponding with the rotating speed of above-mentioned screw rod;
Travel mechanism, it makes and above-mentionedly smears object and above-mentioned applying head relatively moves based on the pattern of smearing with straight line portion and sweep; And
From rotation zero hour of above-mentioned screw rod in the above-mentioned time the zero hour of relatively moving of smearing object and above-mentioned applying head, the rotating speed of controlling above-mentioned screw rod makes the rotating speed of its above-mentioned screw rod when carrying out the smearing of above-mentioned straight line portion little, passed through under the situation of above-mentioned time, controlled the mechanism of the rotating speed of above-mentioned screw rod accordingly with the above-mentioned relative moving speed of smearing object and above-mentioned applying head.
2. plaster coating device as claimed in claim 1 is characterized in that, the above-mentioned mechanism that controls is controlled at the rotating speed of the above-mentioned screw rod in the above-mentioned time below the rotating speed of the above-mentioned screw rod when carrying out the smearing of above-mentioned sweep.
3. plaster coating device as claimed in claim 1 or 2 is characterized in that, the above-mentioned mechanism that controls is controlled to the rotating speed of the above-mentioned screw rod in the above-mentioned time constant at the appointed time.
4. one kind is coated with the cream method, it is characterized in that having following steps:
The rotation of use by screw rod is from the applying head of nozzle to the creme of smearing the object ejection amount corresponding with the rotating speed of above-mentioned screw rod, make and above-mentionedly smear object and above-mentioned applying head relatively moves based on the pattern of smearing, and creme is spread upon above-mentioned operation of smearing object with straight line portion and sweep;
From rotation zero hour of above-mentioned screw rod in the above-mentioned time the zero hour of relatively moving of smearing object and above-mentioned applying head, the rotating speed of controlling above-mentioned screw rod makes the rotating speed of its above-mentioned screw rod when carrying out the smearing of above-mentioned straight line portion little, passed through under the situation of above-mentioned time, controlled the operation of the rotating speed of above-mentioned screw rod accordingly with the above-mentioned relative moving speed of smearing object and above-mentioned applying head.
5. the cream method that is coated with as claimed in claim 4 is characterized in that, the above-mentioned operation of controlling is controlled at the rotating speed of the above-mentioned screw rod in the above-mentioned time below the rotating speed of the above-mentioned screw rod when carrying out the smearing of above-mentioned sweep.
6. as claim 4 or the 5 described cream methods that are coated with, it is characterized in that the above-mentioned operation of controlling is controlled to the rotating speed of the above-mentioned screw rod in the above-mentioned time constant at the appointed time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007207764 | 2007-08-09 | ||
| JP2007207764A JP2009039661A (en) | 2007-08-09 | 2007-08-09 | Paste coating apparatus and paste coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101362125A true CN101362125A (en) | 2009-02-11 |
Family
ID=40388835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101449027A Pending CN101362125A (en) | 2007-08-09 | 2008-08-07 | Cream applying device and method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2009039661A (en) |
| KR (1) | KR20090015846A (en) |
| CN (1) | CN101362125A (en) |
| TW (1) | TW200916203A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240616A (en) * | 2010-05-13 | 2011-11-16 | 薛永波 | Spraying method capable of reducing running paint |
| CN103447193A (en) * | 2012-05-31 | 2013-12-18 | 松下电器产业株式会社 | Coating apparatus |
| CN104353569A (en) * | 2014-10-24 | 2015-02-18 | 无锡乐华自动化科技有限公司 | Industrial terrace automatic spraying machine |
| WO2018000971A1 (en) * | 2016-06-30 | 2018-01-04 | 京东方科技集团股份有限公司 | Frame sealant coating method and apparatus |
| CN111036431A (en) * | 2018-10-11 | 2020-04-21 | 株式会社斯巴鲁 | Sealant ejection device |
| CN111331220A (en) * | 2020-03-13 | 2020-06-26 | 河北科技大学 | Tin paste smearing control method and device applied to tin paste smearing equipment |
| CN117583522A (en) * | 2023-12-07 | 2024-02-23 | 台州市承跃机械有限公司 | Aluminum forging device for motorcycle production |
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| KR20100056124A (en) * | 2008-11-19 | 2010-05-27 | 주식회사 탑 엔지니어링 | Paste dispenser and method for dispensing paste using the same |
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| WO2017048926A1 (en) * | 2015-09-16 | 2017-03-23 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
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| WO2019013208A1 (en) * | 2017-07-11 | 2019-01-17 | シャープ株式会社 | Application apparatus and application method |
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-
2007
- 2007-08-09 JP JP2007207764A patent/JP2009039661A/en active Pending
-
2008
- 2008-08-06 TW TW097129903A patent/TW200916203A/en unknown
- 2008-08-07 KR KR1020080077503A patent/KR20090015846A/en not_active Application Discontinuation
- 2008-08-07 CN CNA2008101449027A patent/CN101362125A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240616A (en) * | 2010-05-13 | 2011-11-16 | 薛永波 | Spraying method capable of reducing running paint |
| CN103447193A (en) * | 2012-05-31 | 2013-12-18 | 松下电器产业株式会社 | Coating apparatus |
| CN103447193B (en) * | 2012-05-31 | 2015-11-18 | 松下电器产业株式会社 | Apparatus for coating |
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| WO2018000971A1 (en) * | 2016-06-30 | 2018-01-04 | 京东方科技集团股份有限公司 | Frame sealant coating method and apparatus |
| CN111036431A (en) * | 2018-10-11 | 2020-04-21 | 株式会社斯巴鲁 | Sealant ejection device |
| CN111036431B (en) * | 2018-10-11 | 2022-11-04 | 株式会社斯巴鲁 | Sealant ejection device |
| CN111331220A (en) * | 2020-03-13 | 2020-06-26 | 河北科技大学 | Tin paste smearing control method and device applied to tin paste smearing equipment |
| CN111331220B (en) * | 2020-03-13 | 2022-04-15 | 河北科技大学 | Tin paste smearing control method and device applied to tin paste smearing equipment |
| CN117583522A (en) * | 2023-12-07 | 2024-02-23 | 台州市承跃机械有限公司 | Aluminum forging device for motorcycle production |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200916203A (en) | 2009-04-16 |
| JP2009039661A (en) | 2009-02-26 |
| KR20090015846A (en) | 2009-02-12 |
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