CN104829142B - AR plated film roll coater belt lacings automatic dodging device - Google Patents

Abstract

The invention belongs to the technical field of AR coated glass production for solar energy, and provides an automatic avoidance device for a belt joint of an AR coated roller coater. There is a non-contact proximity switch (2) under the roller coater belt (9) of the belt joint automatic avoidance device; the tangent point between the top of the roller coater pulley and the roller coater belt is taken as the reference point B (6), and the reference point The distance between B (6) and the non-contact proximity switch (2) is set to L1 according to the length of the glass (7), and the belt joint (3) passes through the non-contact proximity switch (2) to reach the reference point B (6) running distance Set as L2; set reference point A (5) on the glass conveyor belt (10), the distance between reference point A (5) and reference point B (6) is L2; set above the glass conveyor belt (10) The light eye (4), the distance between the light eye (4) and the reference point A (5) is L1. The invention avoids the generation of AR glass belt joint marks, and improves product quality and pass rate.

Description

AR Coating Roller Coating Machine Belt Joint Automatic Avoiding Device

technical field

The invention belongs to the technical field of AR coated glass production, and mainly relates to an automatic control avoidance device for belt joints of AR coating roller coating machines, which is applied to the production of AR coated glass for solar photovoltaic module cover plates.

Background technique

Solar energy is one of the new energy sources with the greatest development prospects and space. The most prominent advantage of the application of solar cells is its clean and non-polluting energy, which is a typical green energy.

China's solar photovoltaic industry has developed rapidly in recent years. Photovoltaic cover glass is one of the important component materials of solar cell components. The advantage of using AR coated glass for components is that it can be better without changing the component process and materials. Improve the output power of the module; the input and production cost of AR coated glass is low, which can better reduce the cost of the module or improve the shipment level and price of the module, which has good economic and social benefits.

At present, most solar photovoltaic modules use AR coated cover glass.

The preparation process of AR coated glass includes vacuum magnetron sputtering, chemical vapor deposition, soaking, thermal spraying, sol-gel pulling method and roller coating method; the roller coating method has simple process, fast coating speed, low cost and high quality. It can meet the requirements of photovoltaic modules, so in the field of photovoltaic glass AR coating processing, the roll coating method is mainly used for industrial scale production at present.

The structure and working principle of the roller coating machine are shown in Figure 2. The coating roller touches the glass and transfers the AR solution to the glass; the electric engraving roller with a pattern mesh determines the conventional belt rotation of the solution; the glass passes through at the speed of Vc and at the speed of Va When the coating roller is running, the AR solution is transferred to the suede surface of the embossed glass for coating, and the glass enters the drying and curing section. The cured product is tempered at high temperature, and the porous silicon in the film layer is formed and solidified on the glass. On the surface, invalid organic components and moisture are volatilized in the tempering furnace.

The belt length of the existing roller coater roller coater is 8020mm, and the width of the belt joint is 150mm. The belt joint will pass under the coating coating roller once every week the belt runs. Compared with other normal parts, the thickness and uniformity of the belt joint are inconsistent, and the surface of the joint is relatively rough; when the glass enters the roller coater roller above the belt joint, the pressure and depth between the roller coater roller and the glass It will change with the unevenness of the belt joint, resulting in a corresponding change in the thickness of the AR coating film. After the gel is dried, the coated glass will produce uneven interference color (industry name: joint print), appearance quality problems and uneven transmittance. Quality issues. According to the current glass specification of 1644×985mm, 4 pieces of glass can be produced for each revolution of the belt, of which 1 piece has a high probability of joint marks, and about 10% of the glass actually produced has belt joint marks.

Contents of the invention

The purpose of the present invention is to propose an automatic dodging device for the belt joint of an AR coating roller coater, so that it can solve the quality problem of the AR coated glass belt joint print caused by the unevenness of the belt joint of the original roller coater, and effectively improve product quality and Pass rate.

The present invention adopts following technical scheme for accomplishing its object of the invention:

An automatic avoidance device for the belt joint of an AR coating roller coater, the roller coater belt of the AR coating roller coater and the glass conveyor belt are arranged side by side; , conveying speed are identical, and conveying speed is V; The bottom of described roller coater belt is provided with the contactless proximity switch that is used to detect belt joint; The tangent point of roller coater pulley top and roller coater belt is used as reference Point B, and set the distance between the reference point B and the non-contact proximity switch as L1 according to the length of the glass, and set the distance that the belt joint travels through the non-contact proximity switch to the reference point B as L2, the distance of L2 The length is equal to the glass length L1 plus 1/2 of the circumference of the pulley; set the reference point A on the glass conveyor belt, and make the distance between the reference point A and the reference point B and the belt joint reach the reference point B through the non-contact proximity switch The running distance is set to be the same, both are L2; since the conveying speed V of the glass conveyor belt is the same as the conveying speed V of the roller coater belt, the distance between reference point A and reference point B is close to the contactless distance between the belt joint The distance traveled by the switch to reach the reference point B is the same, then the running time for the front of the glass to travel from the reference point A to the reference point B is the same as the time for the belt joint to travel from the non-contact proximity switch to the reference point, and the front of the glass is moved by The running time from reference point A to reference point B and the time for the belt joint to reach reference point B from the non-contact proximity switch are set as T3, T3=L2/V; a light eye is set above the glass conveyor belt, The distance between the optical eye and the reference point A is set to be L1 the same as the length of the glass; the automatic avoidance device is also provided with a programmable controller to control it; When the head passes through the optical eye, a signal is sent, and the programmable controller starts timing. Since the distance between the optical eye and the reference point A is the same as the length of the glass, the glass moves forward with a piece of glass along with the glass conveyor belt. The time taken for the length is the same as the running time for the glass head to reach the reference point A from the optical eye with the glass conveyor belt. Set the running time for the glass head to reach the reference point A through the optical eye and the glass conveyor belt as T1, T1=L1 / V; the tail of the glass passes through the light eye to reach the running time of the reference point A as T2, T2=2L1/V; when the glass runs through the light eye in the time period between T1~T2, if the programmable controller does not Receive the induction signal of the non-contact proximity switch, the glass will not be superimposed on the belt joint of the roller coater, and the glass will be transported to the roller coater for coating normally; if the programmable controller Receive the induction signal of the non-contact proximity switch, the glass and the belt joint will be superimposed at the reference point B, and the belt joint mark will be produced during coating; in order to avoid the contact between the belt joint and the glass, when the head of the glass reaches the reference point B One second before, that is, when the head of the glass reaches the reference point B from the optical eye, the running time is: (T1+T3)-1S, the programmable controller sends an instruction to stop the glass conveyor belt, and the roller coater belt continue to run;

The waiting time of the glass conveyor belt is:

From the timing of the programmable controller to the reception of the induction signal from the non-contact proximity switch, set the running time of the glass on the glass conveyor belt through the optical eye as N, and N is located between the running time T1 and the running time T2 time, that is, T1<N<T2; after the programmable controller receives the induction signal of the non-contact proximity switch, the time required for the head of the glass to reach the reference point B is the time for the entire glass head to reach the reference point from the optical eye The running time of B is T1+T3 minus the time N that the glass head has been running when the timing starts and the programmable controller receives the sensing signal from the non-contact proximity switch; the non-contact proximity switch is received from the programmable controller When the induction signal is sent, the running time for the belt joint to reach the reference point B is T3, that is, the time for the belt joint to reach the reference point B from the non-contact proximity switch is T3; since the glass conveyor belt stops one second before reaching the reference point B Running, the glass needs to run after the programmable controller receives the induction signal from the non-contact proximity switch. When receiving the induction signal from the non-contact proximity switch, the glass head has been running for N plus 1s, that is, (T1+T3) - (N+1); then the glass conveyor belt needs to wait for the belt joint from non-contact The running time for the point proximity switch to reach the reference point B is T3 minus the time the glass still needs to run after the programmable controller receives the induction signal from the non-contact proximity switch, that is, T3－{(T1+T3)－(N +1)}; Considering the width of the belt joint, the waiting time of the glass conveyor belt is increased by 2s, and the overall waiting time of the glass conveyor belt is: T3－{(T1+T3)－(N+1)}+2s; When the time is up, the programmable controller sends an instruction to stop the suspension of the glass conveyor belt, and the glass conveyor belt conveys the glass forward and enters normal production.

The belt joint is provided with an induction iron sheet matched with a non-contact proximity switch.

An automatic belt joint avoidance device for an AR coating roller coating machine proposed by the present invention adopts the above-mentioned technical scheme, through setting conditions to sense and calculate the running position of the belt joint and the glass running position, so that the glass will be pressed against the belt joint when it is expected to run In the case of PLC programming control, when the glass conveying reaches the reference point B, it will be paused in advance, and the glass conveying will be started after the belt joint has passed the reference point B, and then the glass conveying will enter the roller coater, thereby avoiding the generation of AR glass belt joint marks and improving It guarantees product quality and qualified rate, and has the characteristics of reasonable structure, convenient installation, simple and reliable operation.

Description of drawings

Figure 1 is a schematic diagram of the working principle of the roller coater.

Fig. 2 is a structural schematic diagram of the present invention.

In the figure: 1. Programmable controller, 2. Non-contact proximity switch, 3. Belt connector, 4. Optical eye, 5. Reference point A, 6. Reference point B, 7. Glass, 8. Roller coater glue Roller, 9, roller coater belt, 10, glass conveyor belt, 11, electric carving roller, 12, back roller.

detailed description

The present invention is described in conjunction with accompanying drawing and specific embodiment;

As shown in Figure 1, a kind of automatic avoidance device of belt joint of AR coating roller coater, the roller coater belt 9 of AR coating roller coater and glass conveyor belt 10 are arranged side by side; Speed is the same as the delivery direction and the delivery speed of the roller coater belt 9, and the delivery speed is V; the bottom of the roller coater belt 9 is provided with a non-contact proximity switch 2 for detecting the belt joint; The tangent point of the belt of the roller coater is taken as the reference point B6, and the distance between the reference point B6 and the non-contact proximity switch 2 is set as L1 according to the length of the glass, and the belt joint passes through the non-contact proximity switch to reach the reference point. The running distance is set to L2, and the length of L2 is equal to the glass length L1 plus 1/2 of the circumference of the pulley; set the reference point A5 on the glass conveyor belt, and the distance between the reference point A5 and the reference point B6 and the belt joint pass through The distance traveled by the non-contact proximity switch to reach the reference point is set to be the same, both are L2; since the conveying speed V of the glass conveyor belt 10 is the same as the conveying speed V of the roller coater belt 9, the distance between the reference point A5 and the reference point B6 The distance is the same as the distance that the belt joint 3 travels from the non-contact proximity switch 2 to the reference point B6, then the running time for the front of the glass to travel from the reference point A5 to the reference point B6 is the same as the running time for the belt joint 3 to reach the reference point B6 from the non-contact proximity switch 2 The running time to reach the reference point B6 is the same, set the running time of the glass front from the reference point A to the reference point B and the running time of the belt joint from the non-contact proximity switch to the reference point as T3, T3= L2/ V; the photoeye 4 is set above the glass conveyor belt 10, and the distance between the photoeye 4 and the reference point A5 is set to be L1 the same as the length of the glass 7; the automatic avoidance device A programmable controller 1 for controlling it is also provided; when the head of each piece of glass 7 passes through the optical eye 4, the programmable controller 1 starts timing, because the optical eye 4 and the reference point The distance between A5 is the same as the length of the glass 7, and the time it takes for the glass 7 to move forward with the glass conveyor belt 10 for a piece of glass length is the same as the running time for the head of the glass 7 to reach the reference point A5 from the optical eye 4 with the glass conveyor belt 10 , set the running time of the glass 7 from the optical eye 4 to the reference point A5 with the glass conveyor belt 10 as T1, T1=L1 /V; set the running time of the tail of the glass 7 to the reference point A5 through the optical eye 4 as T2, T2=2L1/V; when the running time of the glass through the optical eye is within the time period between T1~T2, if the programmable controller does not receive the induction signal of the non-contact proximity switch, the glass will not contact the roller coater belt. The joints are superimposed, and the glass is normally transported to the roller coater for coating; if the programmable controller receives the induction signal of the non-contact proximity switch during the running time T1~T2, it means that the glass and the belt joint will be in the The reference point B is superimposed, and the belt joint mark will be produced during coating. In order to avoid the contact between the belt joint and the glass, one second before the head of the glass reaches the reference point B, that is, when the head of the glass reaches the reference point B from the optical eye. time is (T1+T3) - 1S, the programmable controller sends an instruction to stop the glass conveyor belt, and the roller coater belt continues to run;

The waiting time of the glass conveyor belt is:

From the timing of the programmable controller to the reception of the induction signal from the non-contact proximity switch, set the running time of the glass on the glass conveyor belt through the optical eye as N, and N is located between the running time T1 and the running time T2 time, that is, T1<N<T2; after the programmable controller receives the induction signal of the non-contact proximity switch, the time required for the head of the glass to reach the reference point B is the time for the entire glass head to reach the reference point from the optical eye The running time of B is T1+T3 minus the time N that the glass head has been running when the timing starts and the programmable controller receives the sensing signal from the non-contact proximity switch; the non-contact proximity switch is received from the programmable controller When the induction signal is sent, the running time for the belt joint to reach the reference point B is T3, that is, the time for the belt joint to reach the reference point B from the non-contact proximity switch is T3; since the glass conveyor belt stops one second before reaching the reference point B Running, the glass needs to run after the programmable controller receives the induction signal from the non-contact proximity switch. When receiving the induction signal from the non-contact proximity switch, the time N of the glass head has been running plus 1s, that is, {(T1+T3) - (N+1)}; the waiting time for the glass conveyor belt is T3 - {( T1+T3) - (N+1)}; Considering the width of the belt joint, the waiting time of the glass conveyor belt is increased by 2s, and the overall waiting time of the glass conveyor belt is: T3 - {(T1+T3) - (N+1 )}+2s; when the glass waiting time is up, the programmable controller sends out an instruction to stop the suspension of the glass conveyor belt, and the glass conveyor belt transports the glass forward and enters normal production.

In this embodiment, the glass length L1=1644mm, the rotating speed V=6m/60s of the glass conveyor belt and the roller coater belt, and the diameter of the pulley is 100mm, then: the circumference of the pulley is 314mm, L2= L1+314/2= 1801mm; the running time of glass 7 from optical eye 4 to reference point A5 with glass conveyor belt 10 is also the running time of belt joint from non-contact proximity switch to reference point B T1= L1/V=1644mm/ 6m/60s =16.44 s, T2= 2T1=2*16.44s =32.88s, T3= L2/V=1801mm/ 6m/60s =18.01s,

For example, the time N=20s for the programmable controller 1 to receive the induction signal of the non-contact proximity switch 2,

The time point when the glass conveyor belt pauses is: (T1+T3) -1s=(16.44+18.01)-1 s=33.45s

Then the overall length of time that the glass conveyor belt waits is:

T3－{(T1+T3)－(N+1)}+2s =6.56s

The belt joint 3 is provided with an induction iron sheet that cooperates with the non-contact proximity switch 2 .

In the above-mentioned embodiment, the programmable controller 1 adopts the Siemens S7-200 carried by the roller coater; the non-contact proximity switch 2 selects a metal induction switch with a detection distance of 12mm; Adhered to the edge of the belt joint; the light eye 4 uses Omron's E3Z photoelectric sensor switch; the rubber roller 8 of the roller coater and the belt 9 of the roller coater are all original configuration equipment of the production line.

Claims (2)

1. a kind of AR plated film roll coater belt lacings automatic dodging device, the roll coater belt of AR plated film roll coater（9）With glass Conveyer belt（10）It is set up in parallel in front and back；Described glass conveyer belt（10）Conveying direction, transporting velocity and roll coater belt（9）'s Conveying direction, transporting velocity are identical, and transporting velocity is V；Described roll coater belt（9）Lower section be provided with order to connect to belt The contactless proximity switch that head is detected（2）；Point of contact B as a reference point by roll coater belt pulley top and roll coater belt （6）, and by described reference point B（6）With contactless proximity switch（2）The distance between press glass（7）Length is set to L1, by belt Joint（3）Through contactless proximity switch（2）Reach reference point B（6）The distance run is set to L2, and the length of L2 is equal to glass The 1/2 of length L1 Cortex Acanthopanacis Radicis belt wheel girth；Reference point A is arranged on glass conveyer belt（5）, and by reference point A（5）With reference point B （6）The distance between and belt lacings（3）Through contactless proximity switch（2）Reach reference point B（6）The distance setting being run For identical, it is L2；Because transporting velocity V of glass conveyer belt is identical with transporting velocity V of roll coater belt, reference point A（5） With reference point（6）The distance between B reaches, through contactless proximity switch, the distance setting that reference point B is run with belt lacings Identical, then head of glass is by reference point A（5）Run to reference point B（6）Run time and belt lacings（3）From contactless Proximity switch（2）Reach reference point B（6）The time run is identical, by head of glass by reference point A（5）Run to reference point B （6）Run time and belt lacings（3）From contactless proximity switch（2）Reach reference point B（6）The time run is set to T3, T3=L2/V；In described glass conveyer belt（10）Top setting light eye（4）, by described light eye（4）With described reference point A （5）The distance between be set to identical with the length of glass be L1；Described automatic dodging device is additionally provided with order to it The Programmable Logic Controller being controlled（1）；The head of every sheet glass is through light eye（4）When send signal, described programmable control Device processed（1）Start timing, due to described light eye（4）With described reference point A（5）The distance between and glass（7）Length identical, Glass（7）With glass conveyer belt（10）The time used by a piece of glass length of moving forward is with head of glass from light eye（4）With glass Glass conveyer belt（10）Reach reference point A（5）Run time identical, by head of glass through light eye with glass conveyer belt（10）Reach Reference point A（5）Run time be set to T1, T1=L1/V；By the afterbody of glass through light eye（4）Reach reference point A（5）Fortune The row time is set to T2, T2=2L1/V；When glass is through light eye（4）Run time within the time period between T1 ~ T2, if programmable Controller（1）It is not received by contactless proximity switch（2）Induced signal, then glass will not be with roll coater belt lacings（3） Superposition, glass is normally transported to roll coater and carries out plated film；If Programmable Logic Controller in the time period between when running between T1 ~ T2 （1）Receive contactless proximity switch（2）Induced signal, then glass and belt lacings（3）Will be in reference point B（6）Superposition, Belt lacings print can be produced during plated film；In order to avoid belt lacings（3）With glass（7）Contact, in glass（7）Head reach ginseng Examination point B（6）The previous second, that is, glass head from light eye reach reference point B（6）Run time be：（T1+T3）During -1S, Sending instruction by Programmable Logic Controller makes the out of service of glass conveyer belt, and roll coater belt continues to run with；

Glass conveyer belt（10）Wait time be：

From Programmable Logic Controller（1）Timing starts to receiving contactless proximity switch（2）During the induced signal sent, by glass In glass conveyer belt（10）On through light eye（4）The set of time of operation is N, N be located at running time T 1 and running time T 2 it Between, i.e. T1 ＜ N ＜ T2；In Programmable Logic Controller（1）Receive contactless proximity switch（2）Induced signal after, the head of glass Portion reaches reference point B（6）The time run also is needed to be that whole head of glass reaches reference point B from light eye（6）Running time T 1+ T3 deducts and starts to Programmable Logic Controller from timing（1）Receive contactless proximity switch（2）Send glass head during induced signal The time N that portion has run；From Programmable Logic Controller（1）Receive contactless proximity switch（2）Send induced signal to start, skin Belt lacing（3）Reach reference point B（6）The time run i.e. belt lacings are from contactless proximity switch（2）Reach reference Point B（6）Run time be T3；Due to glass conveyer belt（10）Reach reference point B（6）The previous second out of service, glass In Programmable Logic Controller（1）Receive contactless proximity switch（2）The time run also is needed to be glass head after sending induced signal Portion is from light eye（4）Start to reach reference point B（6）Run time deduct and start to Programmable Logic Controller to receive oncontacting from timing Point proximity switch is sent the time N that head of glass during induced signal run and is added 1s, that is, (T1+T3)-（N+1）；So glass Glass conveyer belt（10）The time waiting is needed to be belt lacings（3）From contactless proximity switch（2）Reach reference point B（6）Fortune The row time deducts glass in Programmable Logic Controller for T3（1）Receive contactless proximity switch（2）Also need after sending induced signal Run time, that is, T3- (T1+T3)-（N+1）}；Consider belt lacings（3）Width, glass conveyer belt（10）Wait Time increases 2s, and the overall time that glass conveyer belt is waited is：T3- (T1+T3)-（N+1）}+2s；The glass waiting time Arrive, Programmable Logic Controller sends instruction makes glass convey end of tape time-out, and glass tape transport glass advances, and enters and normally gives birth to Produce.

2. a kind of AR plated film roll coater belt lacings automatic dodging device according to claim 1 it is characterised in that：Described Belt lacings（3）Place is provided with and contactless proximity switch（2）The sensing iron sheet of cooperation.