CN113670052B - Reciprocating circulating type air knife drying system and application method thereof - Google Patents
Reciprocating circulating type air knife drying system and application method thereof Download PDFInfo
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- CN113670052B CN113670052B CN202111050844.3A CN202111050844A CN113670052B CN 113670052 B CN113670052 B CN 113670052B CN 202111050844 A CN202111050844 A CN 202111050844A CN 113670052 B CN113670052 B CN 113670052B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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Abstract
The utility model discloses a reciprocating circulating air knife drying system and a use method thereof, which are used for drying a piece to be dried and comprise the following steps: the air knife is provided with an air knife air inlet and a plurality of air knife air outlets, and the air knife air inlet is connected with an external air source so as to ensure that the relative speeds of the air knives in forward movement and reverse movement are kept consistent with those of the piece to be dried; the air outlet directions of the air knife air outlets are opposite to the running direction of the to-be-dried piece and incline towards the surface of the to-be-dried piece. According to the utility model, the movable assembly drives the air knives to move to scrape the piece to be dried repeatedly and dry the piece, so that a group of inclined air knives can scrape and blow the same glass plate repeatedly and repeatedly to achieve the scraping and blowing effects of a plurality of groups of fixed air knives.
Description
Technical Field
The utility model relates to the technical field of glass mechanical devices, in particular to a reciprocating circulating air knife drying system and a using method thereof.
Background
The traditional glass cleaner air knives generally adopt the combination of a straight air knife and an inclined air knife to finish the drying process of each part, and because the contact time between each group of air knives and a glass substrate is shorter and is mostly a fixed value, the drying effect of a single group of air knives is very limited.
The prior Chinese patent grant publication No. CN202229549U discloses a dry air knife of a glass cleaning machine, which comprises a hollow straight-type installation inclined air knife main body, wherein the bottom of the air knife main body is wider, the upper part of the air knife main body is narrowed, the end part of the air knife main body is provided with an air inlet, a plurality of end-to-end air dividing blades which are connected end to end and are relatively fixed with the air knife main body are arranged on the upper part of the air knife main body in parallel, and the air dividing blades are utilized to change the blowing direction of air so as to form a certain included angle with the advancing direction of glass. By adopting the glass cleaning machine, the appearance size of the glass cleaning machine can be greatly reduced, the equipment manufacturing cost and the equipment performance are improved well, meanwhile, the distance between the conveying glass roller way and the air knife is reduced as much as possible, meanwhile, the continuity of the arrangement of the roller way is ensured, the conveying of glass is more stable, and glass processing with different thickness and width sizes can be met more widely.
But the process requirement of equipment speed improvement is met by increasing the number of the air knives and the air quantity of the fans, so that the equipment cost is increased and the equipment energy consumption is increased.
Disclosure of Invention
The utility model solves the technical problems by the following technical means: a reciprocating air knife drying system for drying a piece to be dried, comprising:
the air knife is provided with an air knife air inlet and a plurality of air knife air outlets, the air knife air inlet is connected with an external air source, and the air outlet directions of the air knife air outlets are opposite to the running direction of the piece to be dried and incline towards the surface of the piece to be dried;
the moving assembly is used for driving the air knife to linearly reciprocate so as to ensure that the relative speed of the air knife in forward movement and reverse movement is kept consistent with the relative speed of the piece to be dried;
the conveying mechanism drives the to-be-dried piece to move along the conveying direction; the running speed of the air knife is greater than that of the piece to be dried;
the control unit comprises a first sensor, a third sensor and a controller; the first sensor is fixed at the feeding end of the conveying mechanism and is used for detecting whether a piece to be dried enters the conveying mechanism or not; the third sensor is fixed at the discharge end of the conveying mechanism and is used for detecting whether the rear end of the piece to be dried leaves the conveying mechanism; the first sensor and the third sensor are in communication connection with the controller; the controller controls the moving assembly.
Whether the piece to be dried enters the working surface of the conveying mechanism or not can be detected by the first sensor, and whether the rear end of the piece to be dried leaves the conveying mechanism or not can be detected by the third sensor; the movable component drives the air knives to linearly move for repeatedly scraping and drying the piece to be dried for a plurality of times, so that a group of inclined air knives can repeatedly scrape and blow the same glass plate for a plurality of times to reach the scraping and blowing effect of a plurality of groups of fixed air knives.
As a preferred technical solution, the control unit further comprises a second sensor; the second sensor is fixed on the air knife and used for detecting the relative position of the air knife and the piece to be dried; the second sensor is in communication with the controller. The relative position of the air knife and the piece to be dried can be detected through the second sensor, so that the air knife is effectively prevented from blowing empty to the working face which is not covered by the piece to be dried, and the scraping and blowing effect is improved.
As a preferable technical scheme, the moving assembly comprises a first guide rail, a first sliding block and a driving piece; the first guide rail is provided with the first sliding block in a sliding manner, one end of the air knife is fixed with the first sliding block, the driving piece drives the air knife to linearly reciprocate along the first guide rail, and the driving piece drives the air knife to reciprocate, so that the drying effect which is the same as that of the air knives arranged in multiple groups can be improved, and the equipment length is shortened.
As the preferable technical scheme, the driving piece is driving motor, driving motor is fixed with first slider, the motor output is provided with the gear, one side of first guide rail is provided with the rack, gear and rack meshing have improved the removal precision through the cooperation of gear and rack.
As the preferable technical scheme, remove the subassembly still include the second guide rail and with second guide rail sliding connection's second slider, the air knife other end and second slider fixed connection, second guide rail and first guide rail parallel arrangement, through the setting of second guide rail and second slider, improved the stability of air knife removal in-process.
As an optimal technical scheme, a screw rod lifter is further arranged between one end of the air knife and the first sliding block, the screw rod lifter is fixed with the first sliding block, and the lifting end of the screw rod lifter is fixedly connected with one end of the air knife; the air knife is provided with a plurality of cavities which are arranged in parallel, the cavities are respectively connected with an external air source through connecting pipelines, a plurality of control valves are arranged on the connecting pipelines, and a plurality of control valves are in communication connection with the controller.
The screw rod lifter through setting up can be when waiting to dry the piece transmission speed too fast, adjust the distance of air knife air outlet from waiting to dry the piece surface, increased the wind pressure, improved the peel effect of waiting to dry piece surface water, when transmission speed is not fast, when not high to the wind pressure requirement, the distance of multiplicable air knife from waiting to dry the piece surface has increased the width of air knife air outlet air curtain, the air-dry area of effect on waiting to dry the piece surface has been improved, the effect of drying has been improved, through carrying out the subregion to the air knife, can be according to waiting to dry the opening and closing of size control to different positions air outlet of piece, the utilization ratio of wind has been improved, the energy consumption is practiced thrift.
As the preferable technical scheme, the air knife is obliquely arranged, the included angle between the oblique angle and the width direction of the piece to be dried is within plus or minus five degrees, the action surface of the air knife air outlet on the piece to be dried covers the width of the piece to be dried perpendicular to the movement direction of the piece to be dried, and the air knife is obliquely arranged, so that the air knife blows water on the surface of the piece to be dried from the advancing end to the tail end of the piece to be dried, the air knife is prevented from blowing the water on the piece to be dried to other parts of the piece to be dried from the action surface, and the scraping and blowing effects are improved.
As the preferred technical scheme, all be equipped with fixed plate and cylinder between air knife one end and the first slider and between air knife other end and the second slider, two the fixed plate is fixed respectively on first slider and second slider top, air knife both ends are connected with a fixed plate rotation through an cylinder respectively, air knife both ends bottom all is fixed with a gag lever post, two all seted up on the fixed plate with the waist hole of gag lever post looks adaptation, gag lever post and waist hole sliding fit can adjust the inclination of air knife according to different glass thickness through cylinder, the fixed plate that sets up to the adaptation is weathered to the waiting of different thickness.
The application method of the reciprocating circulating air knife drying system comprises the following steps:
1) Conveying the to-be-dried piece along the conveying direction by the conveying mechanism; the first sensor detects that a piece to be dried is about to enter a working surface of the conveying mechanism, and sends a signal to the controller; the controller controls the mobile assembly to start to operate;
2) The moving component drives the air knife to linearly reciprocate to scrape and blow the piece to be dried in a reciprocating manner;
3) When the third sensor does not detect the piece to be dried, the third sensor sends a signal to the controller, and the controller controls the moving assembly to stop running, and the air knife is retracted to the initial position.
As a preferred technical scheme, the system further comprises a second sensor fixed on the air knife and used for detecting the relative position of the air knife and the piece to be dried, the second sensor is in communication connection with the controller, and the using method comprises the following steps:
1) Conveying the to-be-dried piece along the conveying direction by the conveying mechanism; the first sensor detects that the piece to be dried is about to enter the working surface of the conveying mechanism, and sends a signal to the controller to prompt that the piece to be dried enters the working surface of the conveying mechanism; the controller controls the mobile assembly to start to operate;
2) When the second sensor detects the advancing end of the piece to be dried, the air knife performs one-time scraping and blowing along the direction opposite to the conveying direction of the piece to be dried; when the second sensor on the air knife detects that the air knife moves to the feeding end of the conveying mechanism, the air knife performs one-time scraping and blowing along the direction same as the conveying direction of the piece to be dried, and when the second sensor on the air knife cannot detect the piece to be dried, the first reciprocating scraping and blowing is finished; repeating the scraping and blowing step until the third sensor does not detect the piece to be dried;
3) When the third sensor detects the piece to be dried, the advancing end of the piece to be dried reaches the discharging end of the conveying mechanism, the initial position of the air knife is taken as a starting point in the process of scraping and blowing for a plurality of times by the air knife, the position of the tail end of the piece to be dried (namely, the second sensor cannot detect the piece to be dried) is taken as an end point, and when the third sensor detects the piece to be dried, the scraping and blowing step is repeated;
4) When the third sensor does not detect the piece to be dried, the third sensor sends a signal to the controller, and the controller controls the moving assembly to stop running and resets the air knife.
As a preferable technical solution, the method for controlling the moving assembly by the controller includes: the moving component determines the advancing speed of the forward movement and the backward movement of the air knife through a speed algorithm, and defines the conveying speed of the to-be-dried piece as V 0 The reciprocating times of the air knife is n, and the length of the piece to be dried is S 0 When the piece to be dried is contacted with the reciprocating air knife for the first time, the distance between the air knife and the tail end of the air knife bin is M, and the forward moving speed of the air knife is V 1 The reverse moving speed of the air knife is V 2 The method comprises the steps of carrying out a first treatment on the surface of the The time of the first reverse scraping is T 11 ＝S 0 /(V 0 +V 1 ) At the moment, the travelling distance of the piece to be dried is V 0 T 11 At the moment, the air knife moves to the feeding end of the conveying mechanism for the first time; the time of the first forward blowing is T 12 ＝S 0 /(V 2 -V 0 ) At the moment, the travelling distance of the piece to be dried is V 0 T 12 The air knife scrapes and blows the front end of the piece to be dried for the first time; the first circular scraping and blowing process is completed, and the distance of the travelling part to be dried is as follows: s1=v 0 *S 0 /(V 0 +V 1 )+V 0 *S 0 /(V 2 -V 0 ) The method comprises the steps of carrying out a first treatment on the surface of the The distance travelled by the piece to be dried in each cycle of scraping and blowing is the same, so that the distance travelled by the piece to be dried in the process of completing n times of scraping and blowing is as follows:
equation 1 is obtained: m=n { V 0 *S 0 /(V 0 +V 0 )+V 0 *S 0 /(V 2 -V 0 ) -a }; in order to realize the same blowing effect of forward blowing and reverse blowing, the speeds of the air knives during forward blowing and reverse blowing are required to be ensured to be relative to the parts to be driedThe relative speeds of the speeds are the same: equation 2 is obtained: v (V) 0 +V 1 ＝V 2 -V 0 The method comprises the steps of carrying out a first treatment on the surface of the Equations 1 and 2 are combined to obtain V 1 Values of 2.
The utility model has the advantages that:
(1) In the utility model, whether the piece to be dried enters the working surface of the conveying mechanism or not can be detected by the first sensor, and whether the rear end of the piece to be dried leaves the conveying mechanism or not can be detected by the third sensor; the movable component drives the air knives to move to and fro the piece to be dried for multiple times to scrape and blow the piece to be dried for multiple times, so that a group of inclined air knives can scrape and blow the same glass plate for multiple times to reach the scraping and blowing effect of multiple groups of fixed air knives.
(2) According to the utility model, the relative position of the air knife and the piece to be dried can be detected through the second sensor, so that the air knife is effectively prevented from carrying out air blowing on the working surface which is not covered by the piece to be dried, the scraping and blowing effect is improved, the relative speed of the air knife in forward movement and reverse movement relative to the piece to be dried can be ensured to be consistent through the combination of the controller and the speed algorithm, and the scraping and blowing effect is improved.
(3) According to the utility model, when the transmission speed of the piece to be dried is too high, the distance between the air outlet of the air knife and the surface of the piece to be dried can be adjusted through the screw rod lifter, the air pressure is increased, the stripping effect of water on the surface of the piece to be dried is improved, when the transmission speed is not high, the distance between the air knife and the surface of the piece to be dried can be increased, the width of the air curtain of the air outlet of the air knife is increased, the air drying area acting on the surface of the piece to be dried is increased, the drying effect is improved, the opening and closing of the air outlets at different positions can be controlled according to the size of the piece to be dried by partitioning the air knife, the air utilization rate is improved, and the energy consumption is saved.
(4) According to the utility model, the inclination angle of the air knife can be adjusted according to different glass thicknesses through the arranged air cylinder and the fixed plate so as to be suitable for drying the to-be-dried pieces with different thicknesses.
Drawings
Fig. 1 is a schematic top view of a reciprocating air knife drying system according to embodiment 1 of the present utility model;
fig. 2 is a schematic diagram of an air knife structure of a reciprocating circulating air knife drying system according to embodiment 1 of the present utility model;
fig. 3 is a schematic enlarged view of a part a of fig. 1 of a reciprocating circulating air knife drying system according to embodiment 1 of the present utility model;
fig. 4 is a schematic flow chart of a method for using the reciprocating circulating air knife drying system provided in embodiment 2 of the present utility model;
fig. 5 is a schematic side view of a reciprocating air knife drying system according to embodiment 4 of the present utility model;
fig. 6 is a schematic view of a fixing plate structure of a reciprocating circulating air knife drying system according to embodiment 4 of the present utility model;
fig. 7 is a schematic top view of a reciprocating air knife drying system according to embodiment 4 of the present utility model;
reference numerals: 1. a frame; 2. a first guide rail; 3. a first slider; 4. a rack; 5. a gear; 6. a driving motor; 7. an air knife; 701. an air knife air inlet; 702. an air knife air outlet; 8. a second guide rail; 9. a second slider; 10. a fixing plate; 11. a cylinder; 12. a limit rod; 13. waist holes.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
In this embodiment 1, the glass substrate is taken as an example, the conveying direction of the glass substrate is from left to right, the first sensor (not shown), the second controller (not shown) and the third sensor (not shown) are all photoelectric switch sensors, and the initial position of the air knife 7 is located above the discharge end of the conveying rubber roller.
Referring to fig. 1, 2, 3, 5, 6, a reciprocating air knife drying system, comprising:
at least one set of air knives 7;
the device comprises a first guide rail 2, a first sliding block 3, a driving motor 6, a gear 5 and a rack 4;
a second slider 9 and a second guide rail 8;
a frame 1, a plurality of groups of transmission rubber rollers; a first sensor, a third sensor, and a controller;
the fixing plate 10, the air cylinder 11, the limiting rod 12 and the waist hole 13;
at least one group of air knives 7, wherein the number of the groups of air knives 7 is determined according to the actual production requirement, and the running speed of the air knives 7 is greater than the running speed of the piece to be dried; the air knife 7 is provided with an air knife air inlet 701 and a plurality of air knife air outlets 702, the air knife air inlet 701 is positioned at one end of the air knife 7 and is connected with an external air source, the air knife air inlet 701 is of a tubular structure, and the air outlet directions of the plurality of air knife air outlets 702 are opposite to the running direction of the piece to be dried and incline towards the surface of the piece to be dried; the external air source is input by the air knife air inlet 701, the air knife air outlet 702 is output, the air knife 7 is obliquely arranged, the included angle between the inclined angle and the width direction of the to-be-dried piece is within plus or minus five degrees, the acting surface of the air knife air outlet 702 acting on the to-be-dried piece covers the width of the to-be-dried piece perpendicular to the moving direction of the to-be-dried piece, so that the acting surface of the air knife air outlet 702 can completely cover the glass substrate, the drying effect is improved, the air knife 7 can blow water on the surface of the glass substrate from the advancing end to the tail end of the glass substrate through the inclined arrangement of the air knife 7, the air knife 7 is prevented from blowing water on the glass substrate to other parts of the glass substrate from the acting surface, and the scraping effect is improved;
the moving assembly is used for driving the air knife 7 to linearly reciprocate so as to realize repeated scraping, drying and drying of the glass substrate, wherein the scraping and blowing times are the upward rounding or downward rounding of the ratio of the moving speed of the air knife 7 to the travelling speed of a piece to be dried; the moving assembly comprises a first guide rail 2, a first sliding block 3, a driving motor 6, a rack 4 and a gear 5; the moving assembly further comprises a second guide rail 8 and a second slider 9 in sliding connection with the second guide rail 8; the stability of the movement of the air knife 7 can be improved through the arrangement of the second guide rail 8 and the second sliding block 9, in order to improve the stability of the movement of the air knife 7 and ensure the scraping and blowing effect of the air knife 7 on the glass substrate, a movable wheel (not shown) can be fixed at the other end of the air knife 7 on the basis that one end of the air knife 7 is fixed with the first sliding block 3 through a mounting plate; the top end of the frame 1 is fixedly connected with a first guide rail 2 and a second guide rail 8, the first guide rail 2 and the second guide rail 8 are arranged in parallel, a first sliding block 3 is arranged at the top of the first guide rail 2 in a sliding manner, a first mounting plate (not shown) matched with an air knife air inlet 701 (in a tubular structure) is fixedly connected to the top of the first sliding block 3, a driving motor 6 is fixedly connected with the first sliding block 3, the driving motor 6 is a servo motor, and the driving motor 6 drives the first sliding block 3 and the air knife 7 to reciprocate along the first guide rail 2 through a gear 5 and a rack 4; the other end of the air knife 7 is fixedly connected with a second sliding block 9, the other end of the air knife 7 is fixedly connected with a second mounting plate (not shown) which is matched with the second sliding block 9, the second sliding block 9 has the same structure as the first sliding block 3, and the second sliding block 9 is matched with the first guide rail 2 and the second guide rail 8;
a conveying mechanism comprising a frame 1 and a plurality of conveying rubber rollers fixed on the frame 1, wherein the plurality of conveying rubber rollers are used for enabling the glass substrate to travel along the conveying direction; the conveying rubber roller is provided with a conveying rubber roller feeding end and a conveying rubber roller discharging end, a first sensor is arranged below the conveying rubber roller feeding end and used for detecting whether a piece to be dried enters the conveying mechanism, and a third sensor is arranged below the conveying rubber roller discharging end and used for detecting whether the rear end of the piece to be dried leaves the conveying mechanism;
the travelling speed of the forward movement and the backward movement of the air knife is determined by the moving component through a speed algorithm, and the speed algorithm of the moving component is controlled by the controller to be: defining the transfer speed of the glass substrate as V 0 The reciprocating times of the air knife 7 are n, and the length of the glass substrate is S 0 The distance between the glass substrate and the tail end of the air knife bin when the glass substrate is contacted with the reciprocating air knife for the first time is M, and the forward moving speed of the air knife is V 1 Reverse direction of air knifeThe moving speed is V 2 The method comprises the steps of carrying out a first treatment on the surface of the The time of the first reverse scraping is T 11 ＝S 0 /(V 0 +V 1 ) At this time, the travel distance of the glass substrate is V 0 T 11 At this time, the air knife 7 moves to the feeding end of the conveying mechanism for the first time; the time of the first forward blowing is T 12 ＝S 0 /(V 2 -V 0 ) At this time, the travel distance of the glass substrate is V 0 T 12 The air knife scrapes and blows the glass substrate to the front end for the first time; the first circular scraping and blowing process is completed, and the walking distance of the glass substrate is as follows: s1=v 0 *S 0 /(V 0 +V 1 )+V 0 *S 0 /(V 2 -V 0 ) The method comprises the steps of carrying out a first treatment on the surface of the Since the distance travelled by the glass substrate is the same during each cycle of the wiping, the distance travelled by the substrate after n times of wiping is Cheng Boli:
equation 1 is obtained: m=n { V 0 *S 0 /(V 0 +V 1 )+V 0 *S 0 /(V 2 -V 0 ) -a }; in order to achieve the same blowing effect by forward blowing and reverse blowing, it is necessary to ensure that the relative speed of the air knife to the speed of the glass substrate is the same when forward blowing and reverse blowing: equation 2 is obtained: v (V) 0 +V 1 ＝V 2 -V 0 The method comprises the steps of carrying out a first treatment on the surface of the Equations 1 and 2 are combined to obtain V 1 Values of 2.
The using method comprises the following steps:
1) The conveying mechanism conveys the glass substrate along the conveying direction; the first sensor detects that the glass substrate is about to enter the working surface of the conveying mechanism, and the first sensor sends a signal to the controller; the controller controls the mobile assembly to start to operate; the controller controls the moving assembly to start running, namely the output end of the driving motor 6 drives the gear 5 to rotate, and the driving motor 6 and the air knife 7 do linear motion along the arrangement direction of the first guide rail 2 and the second guide rail 8 due to the meshing of the gear 5 and the rack 4;
2) Speed of conveyance V of glass substrate by wind 0 The reciprocating times n of the air knife 7 and the length S of the glass substrate 0 Distance air knife bin when glass substrate is contacted with reciprocating air knife for the first timeThe distance M between the end of the chamber and the forward moving speed V of the air knife is calculated by a speed algorithm 1 Reverse moving speed V of air knife 2 Determining the end point of the reciprocating scraping and blowing as the feeding end of the conveying rubber roller, the starting point as the discharging end of the conveying rubber roller, and carrying out one-time reverse scraping and blowing by the air knife 7 along the direction opposite to the conveying direction of the glass substrate; when the air knife 7 moves to the feeding end of the conveying rubber roller, the air knife 7 performs one-time same-direction scraping and blowing along the same direction as the conveying direction of the glass substrate, and returns to the discharging end of the conveying rubber roller, which indicates that the first reciprocating scraping and blowing is finished; repeating the steps according to the determined scraping times;
3) When the third sensor detects the glass substrate, the advancing end of the glass substrate is indicated to be away from the discharging end of the conveying rubber roller, when the third sensor does not detect the glass substrate, the tail end of the glass substrate is indicated to be away from the discharging end of the conveying rubber roller, the third sensor sends a signal to the controller, the controller controls the moving assembly to stop running, the air knife 7 is retracted to the initial position, and the fact that the tail end of the glass substrate is away from the discharging end of the output rubber roller after the glass substrate is scraped and blown for many times is needed to be indicated.
Example 2
The difference between this embodiment and embodiment 1 is that a second sensor is fixed to the air knife 7; the device is used for detecting the relative position of the air knife 7 and the piece to be dried; the second sensor is in communication connection with the controller, in this embodiment, the third sensor may be further configured to detect whether the front end of the glass reaches the discharge end of the rubber roller for transmission, so as to adjust the start point and the end point of the air knife 7 in the blowing process, and the rubber roller for transmission is located below the air knife 7.
The using method comprises the following steps:
1) The conveying mechanism conveys the glass substrate along the conveying direction; the first sensor detects that the glass substrate is about to enter the working surface of the conveying mechanism, and sends a signal to the controller to prompt that the glass substrate enters the working surface of the conveying mechanism; the controller controls the moving assembly to start running, namely the output end of the driving motor 6 drives the gear 5 to rotate, and the driving motor 6 and the air knife 7 do linear motion along the arrangement direction of the first guide rail 2 and the second guide rail 8 due to the meshing of the gear 5 and the rack 4;
2) When the second sensor detects the advancing end of the glass substrate, the air knife 7 performs one-time reverse scraping and blowing along the direction opposite to the conveying direction of the glass substrate; when a second sensor on the air knife 7 detects that the air knife 7 moves to the feeding end of the conveying mechanism, the air knife 7 performs one-time co-directional scraping and blowing along the direction same as the conveying direction of the glass substrate, and when the second sensor on the air knife 7 cannot detect the glass substrate, the first reciprocating scraping and blowing is finished; repeating the scraping and blowing step until the third sensor does not detect the glass substrate (i.e., the advancing end of the glass substrate does not reach the discharging end of the conveying rubber roller);
3) When the third sensor detects the glass substrate, it indicates that the advancing end of the glass substrate has reached the discharging end of the conveying mechanism, in the process of scraping and blowing the air knife 7 for many times, the initial position of the air knife 7 is taken as a starting point, the position of the tail end of the glass substrate (i.e. the second sensor cannot detect the glass substrate) is taken as an end point, and when the third sensor can detect the glass substrate all the time (i.e. the tail end of the glass substrate does not leave the discharging end of the conveying rubber roller), the scraping and blowing step is repeated;
4) When the third sensor can not detect the glass substrate, the tail end of the glass substrate is separated from the discharge end of the rubber conveying roller, the third sensor sends a signal to the control controller, the controller controls the moving assembly to stop running, and the air knife 7 is reset.
Example 3
The difference between the embodiment and the embodiment 1 is that a screw rod lifter is further arranged between one end of the air knife 7 and the first sliding block 3, the screw rod lifter is fixed with the first sliding block 3, the lifting end of the screw rod lifter is fixedly connected with one end of the air knife 7, when the conveying speed of the glass substrate is too high, the distance between the air outlet 702 of the air knife and the surface of the glass substrate can be adjusted through the arranged screw rod lifter, the air pressure is increased, the stripping effect on the surface water of the glass substrate is improved, when the conveying speed is not high, the distance between the air knife and the surface of the glass substrate can be increased, the width of an air curtain of an air outlet of the air knife is increased, the air drying area acting on the surface of the glass substrate is increased, and the blow-drying effect is improved; the air knife 7 is provided with a plurality of cavities which are arranged in parallel, the cavities are respectively connected with an external air source through connecting pipelines, a plurality of control valves are arranged on the connecting pipelines, and the plurality of control valves are in communication connection with the controller. By partitioning the air knife, the air outlets at different positions can be opened and closed according to the size control of the glass substrate, the utilization rate of air is improved, and the energy consumption is saved.
Example 4
As shown in fig. 5, fig. 6, fig. 7, the difference between this embodiment and embodiment 1 is that fixed plate 10 and cylinder 11 are equipped with between air knife 7 one end and first slider 3, also be equipped with fixed plate 10 and cylinder 11 between air knife 7 other end and the second slider 9, two fixed plates 10 are fixed respectively on first slider 3 and second slider 9 top, air knife 7 both ends are connected with a fixed plate 10 rotation through a cylinder 11 respectively, cylinder 11 one end is connected with fixed plate 10 rotation on the first slider 3, the flexible end and the air knife 7 one end of cylinder 11 rotate, the flexible end and the other end of another cylinder 11 rotate with fixed plate 10 on the second slider 9 to be connected, air knife 7 both ends bottom all is fixed with a gag lever 12, waist hole 13 with the air knife 7's rotation orbit has all been seted up on two fixed plates 10 with gag lever 12 looks adaptation, gag lever 12 and waist hole 13 sliding fit, through setting up the variable thickness of fixed plate 10, can be adjusted the thickness of glass substrate when the glass substrate thickness is different to the thickness of glass substrate that can be inclined according to the different thickness of air knife 7, the thickness can be adjusted in order to the same thickness, the thickness of glass substrate thickness, and the effect can be blown dry when the glass substrate thickness is different, and the thickness is different, the thickness of glass substrate is different, the thickness of the glass substrate can be adjusted, and the effect is blown dry is different, and the thickness is blown and the thickness is compared with the thickness is compared with the thickness to the glass substrate.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The reciprocating circulating type air knife drying system is used for drying a piece to be dried and comprises at least one group of air knives (7) and a conveying mechanism, wherein the air knives (7) are provided with air knife air inlets (701), and the conveying mechanism drives the piece to be dried to move along the conveying direction; characterized by further comprising:
the air knife (7) further comprises a plurality of air knife air outlets (702), the air knife air inlets (701) are connected with an external air source, and the air outlets (702) are opposite to the running direction of the piece to be dried and are inclined towards the surface of the piece to be dried;
the moving assembly is used for driving the air knife (7) to linearly reciprocate so as to ensure that the relative speed of the air knife in forward movement and reverse movement is kept consistent with the relative speed of the piece to be dried;
the running speed of the air knife (7) is greater than that of the piece to be dried, and the moving assembly always drives the air knife (7) to linearly reciprocate before the piece to be dried leaves the discharge end of the conveying mechanism;
the control unit comprises a first sensor, a second sensor, a third sensor and a controller; the first sensor is fixed at the feeding end of the conveying mechanism and is used for detecting whether a piece to be dried enters the conveying mechanism or not; the second sensor is fixed on the air knife (7) and is used for detecting the relative position of the air knife (7) and a piece to be dried; the third sensor is fixed at the discharge end of the conveying mechanism and is used for detecting whether the rear end of the piece to be dried leaves the conveying mechanism; the first sensor, the second sensor and the third sensor are in communication connection with the controller; the controller controls the moving assembly to drive the air knife to reciprocate, and in the process of scraping and blowing the air knife (7) for many times, the initial position of the air knife (7) is used as a starting point, and the tail end of the glass substrate, namely the position where the second sensor cannot detect the glass substrate, is used as an end point.
2. A reciprocating air knife drying system according to claim 1, characterized in that the moving assembly comprises a first guide rail (2), a first slider (3), a driving member; the first guide rail (2) is slidably provided with the first sliding block (3), one end of the air knife (7) is fixed with the first sliding block (3), and the driving piece drives the air knife (7) to linearly reciprocate along the first guide rail (2).
3. A reciprocating air knife drying system according to claim 2, characterized in that the driving member is a driving motor (6), the driving motor (6) is fixed with the first slider (3), a gear (5) is arranged at the output end of the driving motor (6), a rack (4) is arranged at one side of the first guide rail (2), and the gear (5) is meshed with the rack (4).
4. A reciprocating air knife drying system according to claim 2, characterized in that the moving assembly further comprises a second guide rail (8) and a second slider (9) slidingly connected with the second guide rail (8), the other end of the air knife (7) is fixedly connected with the second slider (9), and the second guide rail (8) is arranged in parallel with the first guide rail (2).
5. A reciprocating circulation type air knife drying system according to claim 2, characterized in that a screw rod lifter is further arranged between one end of the air knife (7) and the first sliding block (3), the screw rod lifter is fixed with the first sliding block (3), and the lifting end of the screw rod lifter is fixedly connected with one end of the air knife (7); the air knife (7) is provided with a plurality of cavities which are arranged in parallel, the cavities are respectively connected with an external air source through connecting pipelines, a plurality of control valves are arranged on the connecting pipelines, and a plurality of control valves are in communication connection with the controller.
6. The reciprocating air knife drying system according to claim 4, wherein the air knife (7) is obliquely arranged, the included angle between the oblique angle and the width direction of the piece to be dried is within plus or minus five degrees, and the acting surface of the air knife air outlet (702) acting on the piece to be dried covers the width of the piece to be dried perpendicular to the moving direction of the piece to be dried.
7. The reciprocating circulating air knife drying system according to claim 6, wherein a fixing plate (10) and an air cylinder (11) are arranged between one end of the air knife (7) and the first sliding block (3) and between the other end of the air knife (7) and the second sliding block (9), the two fixing plates (10) are respectively fixed at the top ends of the first sliding block (3) and the second sliding block (9), two ends of the air knife (7) are respectively connected with one fixing plate (10) in a rotating way through one air cylinder (11), a limiting rod (12) is fixed at the bottoms of two ends of the air knife (7), waist holes (13) matched with the limiting rods (12) are formed in the two fixing plates (10), and the limiting rods (12) are in sliding fit with the waist holes (13).
8. Method of use of a reciprocating air knife drying system according to any one of claims 1-7, characterized in that it comprises the steps of:
1) Conveying the to-be-dried piece along the conveying direction by the conveying mechanism; the first sensor detects that a piece to be dried is about to enter a working surface of the conveying mechanism, and sends a signal to the controller; the controller controls the mobile assembly to start to operate;
2) The moving component drives the air knife (7) to linearly reciprocate to scrape and blow the piece to be dried in a reciprocating manner;
3) When the third sensor does not detect the piece to be dried, the third sensor sends a signal to the controller, the controller controls the moving assembly to stop running, and the air knife (7) is retracted to the initial position.
9. The method of using a reciprocating air knife drying system as claimed in claim 8, comprising the steps of:
1) Conveying the to-be-dried piece along the conveying direction by the conveying mechanism; the first sensor detects that the piece to be dried is about to enter the working surface of the conveying mechanism, and sends a signal to the controller to prompt that the piece to be dried enters the working surface of the conveying mechanism; the controller controls the mobile assembly to start to operate;
2) When the second sensor detects the advancing end of the piece to be dried, the air knife (7) performs one-time scraping and blowing along the direction opposite to the conveying direction of the piece to be dried; when a second sensor on the air knife (7) detects that the air knife (7) moves to the feeding end of the conveying mechanism, the air knife (7) performs one-time scraping and blowing along the direction same as the conveying direction of the piece to be dried, and when the second sensor on the air knife (7) cannot detect the piece to be dried, the first-time reciprocating scraping and blowing is finished; repeating the scraping and blowing step until the third sensor does not detect the piece to be dried;
3) When the third sensor detects the piece to be dried, the advancing end of the piece to be dried reaches the discharging end of the conveying mechanism, the initial position of the air knife (7) is taken as a starting point in the process of scraping and blowing for many times by the air knife (7), namely, the position of the second sensor, which cannot detect the piece to be dried, is taken as an end point, and when the third sensor detects the piece to be dried, the scraping and blowing step is repeated;
4) When the third sensor can not detect the piece to be dried, the third sensor sends a signal to the controller, the controller controls the moving assembly to stop running, and the air knife (7) is reset.
10. The method of claim 8, wherein the controller controls the moving assembly by: the moving component determines the advancing speed of the forward movement and the backward movement of the air knife through a speed algorithm, and defines the conveying speed of the to-be-dried piece as V 0 The reciprocating times of the air knife (7) is n, and the length of the piece to be dried is S 0 When the piece to be dried is contacted with the reciprocating air knife for the first time, the distance between the air knife and the tail end of the air knife bin is M, and the forward moving speed of the air knife is V 1 The reverse moving speed of the air knife is V 2 The method comprises the steps of carrying out a first treatment on the surface of the The time of the first reverse scraping is T 11 ＝S 0 /(V 0 +V 1 ) At the moment, the travelling distance of the piece to be dried is V 0 T 11 At the moment, the air knife (7) moves to the feeding end of the conveying mechanism for the first time; the time of the first forward blowing is T 12 ＝S 0 /(V 2 -V 0 ) At the moment, the travelling distance of the piece to be dried is V 0 T 12 The air knife scrapes and blows the front end of the piece to be dried for the first time; finish the first cycle scraping and blowing processThe distance travelled by the piece to be dried is: s1=v 0 *S 0 /(V 0 +V 1 )+V 0 *S 0 /(V 2 -V 0 ) The method comprises the steps of carrying out a first treatment on the surface of the The distance travelled by the piece to be dried in each cycle of scraping and blowing is the same, so that the distance travelled by the piece to be dried in the process of completing n times of scraping and blowing is as follows:
equation 1 is obtained: m=n { V 0 *S 0 /(V 0 +V 0 )+V 0 *S 0 /(V 2 -V 0 ) -a }; in order to achieve the same blowing effect by forward blowing and reverse blowing, it is necessary to ensure that the speed of the air knife is the same as the relative speed of the workpiece to be dried during forward blowing and reverse blowing: equation 2 is obtained: v (V) 0 +V 1 ＝V 2 -V 0 The method comprises the steps of carrying out a first treatment on the surface of the Equations 1 and 2 are combined to obtain V 1 ,V 2 Is a value of (2).
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| CN114812111B (en) * | 2022-04-22 | 2024-04-19 | 京东方科技集团股份有限公司 | Substrate drying device, cleaning system and drying method |
| CN116585858B (en) * | 2023-05-11 | 2023-11-24 | 韦氏（苏州）医疗科技有限公司 | Gas drying device for pneumatic logistics transmission equipment |
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| KR100835004B1 (en) * | 2001-12-06 | 2008-06-04 | 엘지디스플레이 주식회사 | Air Knife Dryer |
| JP2014038914A (en) * | 2012-08-13 | 2014-02-27 | Dainippon Printing Co Ltd | Drying device and drying method for substrate |
| JP2014038915A (en) * | 2012-08-13 | 2014-02-27 | Dainippon Printing Co Ltd | Drying device and drying method for substrate |
| CN202955941U (en) * | 2012-11-13 | 2013-05-29 | 常州捷佳创精密机械有限公司 | Moving dehydration drying device |
| CN203116470U (en) * | 2012-12-07 | 2013-08-07 | 柏力开米复合塑料(昆山)有限公司 | Movable type air knife |
| CN105021005B (en) * | 2015-06-23 | 2017-03-08 | 彩虹集团电子股份有限公司 | A kind of water stain removal of glass surface and drying unit |
| CN105605909B (en) * | 2016-01-15 | 2018-01-30 | 武汉华星光电技术有限公司 | Substrate-cleaning method |
| CN211012359U (en) * | 2019-09-03 | 2020-07-14 | 广东省华彩玻璃机械有限公司 | Energy-efficient glass washer-dryer |
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