Glass deep processing tempering furnace entrance row distance control method and system

Abstract

The application discloses a glass deep processing toughening furnace entrance row distance control method and system, which comprises the following steps: when the position signal emitted by a detection element detects that the front end of the last piece of glass reaches the end of a row distance roller way, refreshing the piece conveying tracking position to zero; according to the speed information emitted by a driving element, tracking the piece conveying position of the last piece of glass, calculating the first distance between the front end of the last piece of glass and the end of the row distance roller way in real time, and when the first distance is greater than a first safe running distance, controlling the driving element to run at a line running speed to receive the next piece of glass; when the driving element is switched from the line running speed to a toughening furnace running speed, the distance between the front end of the next piece of glass and the end of the last piece of glass is a fixed row distance distance set in advance; the application can control the distance of each piece of glass entering the toughening furnace to be a fixed row distance distance, so as to guarantee the toughening effect of the glass and improve the piece conveying quantity and the toughening quality of the toughening furnace per unit time.

Description

Technical Field

[0001] This invention relates to the field of glass deep processing production technology, specifically to a method and system for controlling the inlet spacing of a glass deep processing tempering furnace. Background Technology

[0002] With the rapid development of the photovoltaic industry, the requirements for capacity and automation in photovoltaic glass deep processing production lines are becoming increasingly stringent. Traditional tempering furnace inlet spacing methods involve accelerating the glass flow and then decelerating it to synchronize with the furnace speed. The deceleration time is adjusted via a human-machine interface to regulate the glass spacing. However, any change in any of the four values—furnace inlet speed, glass length, line running speed, or spacing setting time—will simultaneously alter the spacing. Since the glass spacing inside the tempering furnace must remain constant to ensure stable and uniform heating, a large gap between the glass panes can affect the temperature and thus the tempering effect. Furthermore, mismatched parameter settings can lead to overlapping and collision faults. Therefore, the existing spacing method is not only cumbersome to operate and prone to inaccurate spacing errors, but it also increases the line failure rate and reduces the furnace's load capacity.

[0003] In related technologies, patent application document CN118004757A proposes to automatically adjust the spacing between glass pieces based on detection methods such as the number of glass pieces in the tempering furnace, empty glass time, and glass storage machine, thereby reducing manual intervention in the production line and reducing the risk of glass collision and stacking. However, this solution adjusts the spacing of the glass entering the tempering furnace based on the number of glass pieces in the furnace. This spacing varies between 100mm and 400mm, and the spacing may be different for each piece. The purpose is to adjust the production capacity by controlling the glass spacing. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to maintain a stable glass spacing, improve production output and the heating effect of the tempering furnace.

[0005] The present invention solves the above-mentioned technical problems through the following technical means:

[0006] On one hand, this invention proposes a method for controlling the spacing at the inlet of a glass deep-processing tempering furnace. A spacing roller conveyor is installed at the furnace inlet, and a detection element is installed along the roller conveyor. The output of the detection element is connected to a controller, and the output of the controller is connected to a driving element to drive the roller conveyor to move. The method is applied to the controller and includes:

[0007] When the position signal emitted by the detection element detects that the front end of the previous glass piece has reached the end of the spacing roller, the sheet transfer tracking position is refreshed to zero.

[0008] Based on the speed information emitted by the driving element, the position of the previous glass sheet is tracked, the first distance between the front end of the previous glass sheet and the end of the spacing roller is calculated in real time, and when the first distance is greater than the first safe operating distance, the driving element is controlled to run at the line running speed to receive the next glass sheet.

[0009] When the drive element is controlled to switch from the running speed of the connecting line to the running speed of the tempering furnace, the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

[0010] Furthermore, when controlling the driving element to switch from the line running speed to the tempering furnace running speed, ensuring that the distance between the front end of the next glass piece and the end end of the previous glass piece is a preset fixed spacing distance includes:

[0011] Based on the speed information emitted by the driving element, the position of the next glass piece is tracked, and the second distance between the front end of the next glass piece and the initial position is calculated in real time.

[0012] When the second distance is equal to the second safe operating distance, the driving element is controlled to drive the spacing roller conveyor to decelerate from the connecting line operating speed to the tempering furnace operating speed after a set deceleration time, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance.

[0013] Furthermore, when tracking the splicing position of the next glass piece based on the speed information emitted by the driving element, the method further includes:

[0014] The position of the next glass pane is refreshed based on the position signal emitted by the detection element.

[0015] Further, the detection element includes a photoelectric switch B1 arranged at the initial splicing position, and photoelectric switches B2, B3, and B4 arranged at a second correction distance position, a third correction distance position, and a fourth correction distance position behind the inlet of the spacing roller conveyor. The initial splicing position is located at a first correction distance in front of the inlet of the spacing roller conveyor. Correcting the splicing position of the next piece of glass according to the position signal emitted by the detection element includes:

[0016] When the front end of the glass passes the photoelectric switch B1, the refresh glass is positioned at the first correction distance from the inlet of the spacing roller conveyor.

[0017] When the front end of the glass passes the photoelectric switch B2, the refresh glass is positioned at the second corrected distance from the entrance of the spacing roller conveyor.

[0018] When the front end of the glass passes the photoelectric switch B3, the refresh glass is positioned at the third correction distance from the entrance of the spacing roller conveyor.

[0019] When the front end of the glass passes the photoelectric switch B4, the position of the glass plate is refreshed to zero.

[0020] Further, the driving element includes motors M1, M2, and M3 arranged sequentially according to the glass flow direction; when controlling the driving element to switch from the line running speed to the tempering furnace running speed, ensuring that the distance between the front end of the next glass piece and the end end of the previous glass piece is a pre-set fixed spacing distance includes:

[0021] When the motor M1 is controlled to drive the corresponding roller group to run at the line running speed V1 to receive the next piece of glass, the next piece of glass is fed in at the initial speed V0.

[0022] When the second distance between the front end of the next glass piece and the initial splicing position is equal to the second safe operating distance, the control motors M1 and M2 drive the corresponding roller group to decelerate from the line running speed V1 to the tempering furnace running speed V2 after a set deceleration time. At this time, the front end of the next glass piece reaches the photoelectric switch B3, and the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

[0023] Furthermore, when the leading edge of the next glass piece reaches the photoelectric switch B3, the method further includes:

[0024] The motors M1, M2, and M3 are controlled to drive the corresponding roller groups to run at the tempering furnace operating speed V2.

[0025] Furthermore, if the initial velocity V0 > 0, the method further includes:

[0026] Calculate the compensation distance based on the fixed row spacing;

[0027] Based on the compensation distance, the drive element is controlled to drive the spacing roller conveyor to decelerate.

[0028] Furthermore, the formula for calculating the first safe operating distance is:

[0029] S7=L-(V2×T4)-(S 13 -S8)

[0030] In the formula, S7 is the first safe operating distance, L is the glass length, V2 is the tempering furnace operating speed, T4 is the total operating time of the next piece of glass from the initial splicing position to the photoelectric switch B3, T4=T1+T2+T3, T2=(S9+S 11S1-S3, T1 is the acceleration time from the initial speed V0 to the connecting running speed V1, T3 is the deceleration time from the connecting running speed V1 to the tempering furnace running speed V2, S1 is the running distance corresponding to the acceleration time T1, S3 is the running distance corresponding to the deceleration time T3, S9 is the distance from the photoelectric switch B1 to the entrance of the roller conveyor, S 11 S is the distance between photoelectric switch B2 and the entrance of the roller conveyor; 13 S3 is the distance from the photoelectric switch B3 to the end of the roller conveyor, and S8 is the preset fixed roller spacing distance.

[0031] Furthermore, the second safe operating distance is S1+S2, where S1 is the operating distance during the acceleration time T1 from the initial speed V0 to the connecting operating speed V1, and S2 is the distance traveled at a constant speed V1.

[0032]

[0033] S2 = S4 - S1 - S3

[0034] S4 = S9 + S 11

[0035] S3=V1×T3-T3×(V2-V1) / 2

[0036] In the formula, S1 is the running distance corresponding to acceleration time T1, S3 is the running distance corresponding to deceleration time T3, S9 is the distance between photoelectric switch B1 and the entrance of the roller conveyor, and S... 11 V2 is the distance between photoelectric switch B2 and the entrance of the roller conveyor, and V2 is the running speed of the tempering furnace.

[0037] Furthermore, this invention also proposes a glass deep-processing tempering furnace inlet spacing control system. The system includes a controller and detection elements installed along the spacing roller conveyor. The output of the detection elements is connected to the controller, and the output of the controller is connected to a driving element to drive the spacing roller conveyor to move. The controller includes:

[0038] The position calculation module is used to refresh the sheet transfer tracking position to zero when the front end of the previous glass sheet reaches the end of the spacing roller based on the position signal emitted by the detection element.

[0039] The position tracking module is used to track the transfer position of the previous glass piece according to the speed information emitted by the drive element, calculate the first distance between the front end of the previous glass piece and the end of the spacing roller in real time, and control the drive element to run at the line running speed to receive the next glass piece when the first distance is greater than the first safe running distance.

[0040] The drive module is used to control the drive element to switch from the running speed of the connection line to the running speed of the tempering furnace, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

[0041] The advantages of this invention are:

[0042] (1) This invention tracks the position of the glass in real time and achieves a stable and continuous substrate spacing through the spacing system algorithm under four changing variables: the inlet speed of the tempering furnace, the connecting line speed, the glass length and the spacing between the plates. That is, the spacing between each piece of glass entering the tempering furnace is the set spacing value and there is no fluctuation in the spacing. This spacing method can ensure the tempering effect of the glass and improve the number of pieces fed into the tempering furnace per unit time and the tempering quality.

[0043] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the spacing control system in one embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the glass operation process in one embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the speed waveform during the operation of the next glass element in one embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the speed waveform during the operation of the previous glass element in one embodiment of the present invention;

[0048] Figure 5 This is a flowchart illustrating a method for controlling the inlet spacing of a glass deep-processing tempering furnace according to an embodiment of the present invention.

[0049] Figure 6 This is a schematic diagram of the chip position tracking process in one embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of chip position tracking in one embodiment of the present invention;

[0051] Figure 8 This is a schematic diagram of the algorithm for the inlet spacing of a glass deep-processing tempering furnace in one embodiment of the present invention;

[0052] Figure 9 This is a schematic diagram of the inlet spacing control system for a glass deep processing tempering furnace according to an embodiment of the present invention. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] like Figure 1 As shown, this embodiment modifies the glass processing production line by installing a three-drive, spaced roller conveyor at the entrance of the tempering furnace. The roller conveyor is a channel for transporting glass, formed by multiple parallel, spaced rollers located between two uprights. The controller controls the drive elements to drive the multiple parallel, spaced rollers to rotate, thereby transporting the glass. The drive elements include motors M1, M2, and M3 arranged sequentially according to the glass flow direction. Assuming that the spacing between each roller is 200mm, the first roller is a free roller, the second to eighth rollers are driven by motor M1, the ninth to thirteenth rollers are driven by motor M2, the fourteenth to sixteenth rollers are driven by motor M3, and the seventeenth roller is also a free roller. The total length of the roller conveyor is 3300mm.

[0055] Detection elements are installed along the roller conveyor, for example, on uprights on both sides. The detection elements include a photoelectric switch B1 arranged at the initial contact position, and photoelectric switches B2, B3, and B4 arranged at a second, third, and fourth correction distance position behind the roller conveyor entrance. The initial contact position is located a first correction distance in front of the roller conveyor entrance. Specifically, as shown... Figure 2 As shown: Photoelectric switch B1 is installed 50mm in front of the roller conveyor entrance at a distance S9 = 50mm, and photoelectric switch B2 is installed behind the roller conveyor entrance at a distance S9 = 50mm. 10 At a distance of 1600mm, photoelectric switch B3 is installed behind the roller conveyor inlet S. 11 At a distance of 2600mm, photoelectric switch B4 is installed behind the entrance of the roller conveyor, at a distance S from the entrance of the roller conveyor. 12 =3000mm.

[0056] Specifically, in this embodiment, the inlet speed of the connecting line V1, the inlet speed of the tempering furnace V2, the row spacing S8, and the acceleration and deceleration times T1 and T3 of the roller conveyor frequency converter are preset. The acceleration time T1 and the deceleration time T3 are the same, and are carried out according to the following... Figure 2The glass running process shown is defined as follows: when the previous glass G7 moves from photoelectric switch B1 to photoelectric switch B3, the spacing action is completed, and at the same time, the next glass G6 moves from position A to position B. That is, the condition for allowing the spacing glass G7 to enter the spacing roller conveyor is that the spacing glass G6 moves to point A. Therefore, the safe running distance of the glass is S7. In this embodiment, the safe running distance S7 is pre-calculated and written into the controller so that when the controller tracks the transfer position of the previous glass, it determines whether the next glass is allowed to enter based on the safe running distance S7.

[0057] Depend on Figure 2 We can define the length of the glass as L, the distance traveled by the next piece of glass G7 during acceleration as S1, the distance traveled by the next piece of glass G7 at a constant speed as S2, the distance traveled by the next piece of glass G7 during deceleration as S3, the total distance traveled by the next piece of glass G7 from photoelectric switch B1 to photoelectric switch B3 as S4, the distance traveled by the previous piece of glass G6 from the start to the end of the row spacing as S5, the row spacing interval as S8, and the distance from photoelectric switch B3 to the end of the row spacing roller conveyor as S. 13 Spacing S6 = S 13 -S8, safe operating distance S7=L-S5-S6.

[0058] The speed waveform of the next piece of glass G7 during the operation from photoelectric switch B1 to photoelectric switch B3 is as follows: Figure 3 As shown, the system initially accelerates from speed V0 = 0 to V1 in time T1 and travels a distance of S1. Then, it maintains a constant speed of V1 for a period of time T2 and travels a distance of S2. Finally, it decelerates from speed V1 to V2 in time T3 and travels a distance of S3. The acceleration and deceleration times of the roller conveyor frequency converter are both set to 0.5s. The acceleration and deceleration curves are linear motions, and since T1 = T3 = 0.5s, there exists a logical relationship T4 = T1 + T2 + T3.

[0059] have Figure 2 It can be seen that the total distance S4 = S9 + S11 for the next piece of glass G7 to travel from photoelectric switch B1 to photoelectric switch B3.

[0060] Acceleration process travel distance

[0061] The distance traveled during deceleration is S3 = V1 × T3 - T3 × (V2 - V1) / 2.

[0062] The distance traveled at a constant speed is S2 = S4 - S1 - S3.

[0063] The time for uniform motion is T2 = S2 / V1.

[0064] Therefore, the total running time T4 from the operation of photoelectric switch B1 to the operation of photoelectric switch B3 of the next piece of glass G7 can be calculated as follows: T4 = T1 + T2 + T3 = 0.5 + S2 / V1 + 0.5.

[0065] Since the time T4 taken for the next piece of glass G7 to travel from photoelectric switch B1 to photoelectric switch B3 is the same as the time T5 taken for the previous piece of glass G6 to travel from position A to position B, we have T4 = T5. The velocity waveform of the previous piece of glass G6 during its travel from position A to position B is as follows: Figure 4 As shown, since T4 = T5, the running distance of the previous glass piece G6 is S5 = V2 × T5 = V2 × T4;

[0066] The first safe operating distance S7 for glass spacing is L - S5 - S6. Therefore, the relationship between the first safe operating distance and the set fixed spacing value is:

[0067] S7=L-(V2×T4)-(S 13 -S8)

[0068] Therefore, based on the first safe operating distance, the controller controls the drive element to adjust the running speed of the spacing roller, which can stabilize the spacing between the glass pieces at a preset fixed value S8, thereby increasing the number of sheets fed into the tempering furnace per unit time and the tempering quality.

[0069] It is understandable that if the total length of the roller conveyor changes, the installation positions of the drive element and the detection element in this embodiment should also be adjusted accordingly in order to recalculate the first safe operating distance and the second safe operating distance suitable for the current roller conveyor.

[0070] Therefore, based on the above principles, one embodiment of the present invention proposes a method for controlling the inlet spacing of a glass deep-processing tempering furnace, such as... Figure 5 As shown, the method is applied to a controller and includes the following steps:

[0071] S10. When the position signal emitted by the detection element detects that the front end of the previous glass piece has reached the end of the spacing roller, the sheet transfer tracking position is refreshed to zero.

[0072] It should be noted that when the glass reaches the photoelectric switch B4, the photoelectric switch B4 is triggered to send a position signal. The controller detects that the front end of the previous glass has reached the end of the spacing roller based on the position signal sent by the photoelectric switch B4, and refreshes the glass transfer tracking position to zero.

[0073] S20. Based on the speed information emitted by the driving element, track the transfer position of the previous glass piece, calculate the first distance between the front end of the previous glass piece and the end of the spacing roller conveyor in real time, and when the first distance is greater than the first safe operating distance, control the driving element to run at the line running speed to receive the next glass piece.

[0074] S30. When the driving element is controlled to switch from the running speed of the connecting line to the running speed of the tempering furnace, the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance.

[0075] It should be noted that the tracking position of the previous glass G6 is calculated starting from the end C of the roller conveyor. The distance S from the real-time calculated tracking position to the end C of the roller conveyor... T When the value exceeds the calculated value S7, the next glass sheet G7 is allowed to be fed in, completing the sheet transfer and tracking process. Then, motor M1 runs at speed V1 to receive the sheet, while the controller calculates the sheet receiving and tracking position and performs sheet receiving and tracking until the distance reaches S... T When the accumulated value exceeds the calculated value S7, the chip tracking process is retried, and this process is repeated to achieve continuous spacing.

[0076] As a further preferred technical solution, step S30: when controlling the driving element to switch from the line running speed to the tempering furnace running speed, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance, includes the following steps:

[0077] S31. Based on the speed information emitted by the driving element, track the splicing position of the next piece of glass and calculate the second distance between the front end of the next piece of glass and the initial splicing position in real time.

[0078] S32. When the second distance is equal to the second safe operating distance, control the driving element to drive the spacing roller to decelerate from the connecting line running speed to the tempering furnace running speed after a set deceleration time, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance.

[0079] As a further preferred technical solution, step S32: when the second distance is equal to the second safe operating distance, the driving element is controlled to drive the spacing roller conveyor to decelerate from the connecting line operating speed to the tempering furnace operating speed after a set deceleration time, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance, specifically including:

[0080] S321. When controlling the motor M1 to drive the corresponding roller group to run at the line running speed V1 to receive the next piece of glass, the next piece of glass enters the sheet at the initial speed V0.

[0081] S322. When the second distance between the front end of the next glass piece and the initial splicing position is equal to the second safe operating distance, the control motors M1 and M2 drive the corresponding roller group to decelerate from the line running speed V1 to the tempering furnace running speed V2 after a set deceleration time. At this time, the front end of the next glass piece reaches the photoelectric switch B3, and the distance between the front end of the next glass piece and the end of the previous glass piece is a pre-set fixed row spacing distance.

[0082] Wherein, the second safe operating distance is S1+S2, where S1 is the operating distance during the acceleration time T1 from the initial speed V0 to the connecting operating speed V1, and S2 is the distance traveled at a constant speed V1.

[0083]

[0084] S2 = S4 - S1 - S3

[0085] S4 = S9 + S 11

[0086] S3=V1×T3-T3×(V2-V1) / 2

[0087] In the formula, S1 is the running distance corresponding to acceleration time T1, S3 is the running distance corresponding to deceleration time T3, S9 is the distance between photoelectric switch B1 and the entrance of the roller conveyor, and S... 11 V2 is the distance between photoelectric switch B2 and the entrance of the roller conveyor, and V2 is the running speed of the tempering furnace.

[0088] It should be noted that, as Figure 2 As shown, the second safe operating distance is S1+S2, and S9+S 10 The distances are the same, and both can be used to calculate the second safe operating distance. However, in this embodiment, T4 can be obtained through the calculation of S1, S2, and S3. Therefore, in this embodiment, S1+S2 is preferred as the second safe operating distance.

[0089] It should be noted that, as mentioned above, the first safe operating distance value is calculated under the assumption that the next piece of glass starts accelerating from a speed of V0 = 0 to V1. However, in actual applications, the next piece of glass often has an initial speed V0 > 0 when it is joined, which causes the distance S8 to become shorter. Therefore, it is necessary to control the roller conveyor to decelerate in advance. Thus, this embodiment proposes a feedback compensation mechanism to compensate for the deviation caused by the initial speed, specifically including:

[0090] Calculate the compensation distance based on the fixed row spacing;

[0091] Based on the compensation distance, the drive element is controlled to drive the spacing roller conveyor to decelerate.

[0092] Specifically, when the second glass pane is allowed to enter, the instantaneous advance speed is recorded, which is conveniently defined as V3. Then, the actual distance traveled in time T1 is calculated as S. 实际 = (V1+V3)×T1 / 2, based on the actual running distance S 实际 The compensation distance is calculated as follows:

[0093] S 误差 =S 实际 -S1

[0094] Theoretically, the second glass pane begins to decelerate after traveling a distance of S2, and after compensation, it travels from S2 to S... 误差 The deceleration begins, thus achieving a compensation effect to keep the glass spacing stable at the set fixed row spacing.

[0095] It should be noted that this embodiment achieves closed-loop control of the glass spacing algorithm through feedback compensation, thereby improving the stability of the spacing.

[0096] Furthermore, in this embodiment, the PLC controller obtains the actual operating speed of the frequency converter through Ethernet communication, converts it into the linear speed of the roller surface, and then accumulates the position tracking once for each scan cycle executed by the PLC controller. However, due to machine errors in actual applications, the tracking position may deviate. Therefore, this embodiment also corrects the tracking position through the edge signal of the photoelectric switch to achieve the effect of synchronizing the tracking position with the actual running glass. That is, in step S31: tracking the position of the next piece of glass according to the speed information emitted by the drive element and calculating the second distance between the front end of the next piece of glass and the initial position in real time, the following is also included:

[0097] The position of the next glass pane is refreshed based on the position signal emitted by the detection element, specifically as follows:

[0098] When the front end of the glass passes the photoelectric switch B1, the refresh glass is positioned at the first correction distance from the inlet of the spacing roller conveyor.

[0099] When the front end of the glass passes the photoelectric switch B2, the refresh glass is positioned at the second corrected distance from the entrance of the spacing roller conveyor.

[0100] When the front end of the glass passes the photoelectric switch B3, the refresh glass is positioned at the third correction distance from the entrance of the spacing roller conveyor.

[0101] When the front end of the glass passes the photoelectric switch B4, the position of the glass plate is refreshed to zero.

[0102] It should be noted that when the front end of the glass passes the photoelectric switch B4, the glass transfer tracking position is calculated. When the cumulative glass transfer position runs for 3000mm (roller length - B4 installation position), the glass transfer position is refreshed to 0.

[0103] Specifically, in this embodiment, the roller conveyor diameter is known to be D, the motor speed ratio is R, and the PLC controller establishes Ethernet communication with the frequency converter to collect the actual speed V of frequency converters M1, M2, and M3 through communication messages. R1 (r / min), V R2 (r / min), V R3 (r / min);

[0104] PLC acquisition driver M1 speed V R1 (r / min), converted to roller conveyor tracking linear speed V L1 (mm / s)=(V R1 / R)*D / 60;

[0105] PLC acquisition driver M1 speed V R2 (r / min), converted to roller conveyor tracking linear speed V L2 (mm / s)=(V R2 / R)*D / 60;

[0106] PLC acquisition driver M3 speed V R3 (r / min), converted to roller conveyor tracking linear speed V L3 (mm / s)=(V R3 / R)*D / 60;

[0107] Use the "RD_SINFO" instruction to obtain the startup information of the current PLC OB, and use the "RT_INFO" instruction to obtain the scan cycle T of the current OB1. C (um).

[0108] The position S of the PLC tracking operation in the previous scan cycle can be calculated. C1 (mm)=V L1 / 1000000*T C；

[0109] The position S of the PLC tracking operation in the previous scan cycle can be calculated. C2 (mm)=V L2 / 1000000*T C ;

[0110] The position S of the PLC tracking operation in the previous scan cycle can be calculated. C3 (mm)=V L3 / 1000000*T C .

[0111] like Figure 6 As shown, the glass splice position tracking process is as follows: The program enables the splice position tracking function;

[0112] The cumulative position of the splice tracking position in each scan cycle of the PLC is S. L :=S L +S C1 ;

[0113] There is an error between the calculated actual splice position and the actual glass position. In order to ensure the accuracy of the tracking position, the algorithm corrects the tracking position through a photoelectric switch.

[0114] When the front end of the glass passes photoelectric switch B1, the following occurs: S L = 50mm;

[0115] When the front end of the glass passes photoelectric switch B2, the following occurs: S L = 1600mm;

[0116] When the front end of the glass passes photoelectric switch B3, the following occurs: S L = 2600mm;

[0117] When S L； When the accumulated position reaches the stop position of the spacing roller, the splicing logic is completed, and the splicing accumulation position is initialized S. L =0, the chip splicing process is complete and the receiver position tracking is turned off.

[0118] Glass position tracking refers to tracking the actual position of the glass according to a certain motion algorithm. In practical applications, the actual spacing roller conveyor performs sheet joining and sheet transfer simultaneously during the spacing process, so it is necessary to track both the sheet joining tracking position and the sheet transfer tracking position simultaneously. This embodiment, in conjunction with the spacing algorithm, triggers the conveying logic to start sheet transfer position tracking during sheet joining, such as... Figure 7 As shown, the specific chip assembly process is as follows: The program enables the transmission position tracking function;

[0119] The cumulative position of the wafer transfer tracking position in each scan cycle of the PLC is S. T :=S T +S C3 ;

[0120] There is an error between the calculated actual transmission position and the actual glass position. In order to ensure the accuracy of the tracking position, the algorithm corrects the tracking position through a photoelectric switch.

[0121] When the front end of the glass passes photoelectric switch B4, S: T = 0mm;

[0122] While transmitting in conjunction with the spacing algorithm, when S TOnce the value is accumulated to a suitable level, the chip assembly logic is triggered, and the receive position tracking is enabled again. At this point, the receive position tracking and the transmit position tracking operate independently.

[0123] Furthermore, such as Figure 8 As shown, the specific implementation method is as follows: Roller conveyors M1, M2, and M3 run at a speed of V1 to start receiving substrates. The glass position tracking algorithm collects the running speed of M1 and calculates the receiving tracking position in real time. After photoelectric switch B1 is triggered, the receiving tracking position is refreshed to 50mm. Roller conveyors M1, M2, and M3 continue to run at a speed of V1 to receive substrates. After photoelectric switch B2 is triggered, the receiving tracking position is refreshed to 1600mm. Roller conveyors M1, M2, and M3 switch the receiving speed to V2 and continue to run. After photoelectric switch B3 is triggered, the receiving tracking position is refreshed to 2600mm. Roller conveyors M1, M2, and M3 run at a speed of V2 until the substrate splicing is completed.

[0124] The roller conveyors M1, M2, and M3 start conveying substrates at a speed of V2. The previous glass G6 begins to enter the tempering furnace. The conveying tracking position is calculated from the end C of the roller conveyor. At this time, the conveying position is 0mm. The glass position tracking algorithm collects the conveying speed of M3 and calculates the glass conveying position in real time. When the tracking conveying position is greater than the calculated value S7, the next glass G7 is allowed to enter. The roller conveyor M1 runs at a speed of V1 to receive substrates again. When the bonding tracking position is equal to S1+S2, the speed of the roller conveyors M1 and M2 decelerates from V1 to V2 and repeats the bonding process. After a deceleration time T3, the next glass G7 reaches the photoelectric switch B3 position. The speed of the roller conveyors M1 and M2 decelerates to V2. At this time, the distance S8 between the previous glass G6 and the next glass G7 is the spacing distance. After the spacing is completed, the spacing glass G6 and the spacing glass G7 are conveyed into the tempering furnace at the same speed V2.

[0125] It should be noted that traditional spacing methods cannot achieve a constant and stable spacing between glass pieces entering the tempering furnace. Setting the spacing too small can lead to glass collisions, which significantly impacts production. Therefore, traditional spacing methods typically control the glass spacing to fluctuate around 200mm. This embodiment, however, allows for a smaller glass spacing, such as 100mm, and maintains a stable spacing at a fixed value. This not only improves the tempering effect but also increases the number of glass pieces entering the tempering furnace per unit time, thereby increasing output. A traditional 60m tempering furnace produces approximately 9500 pieces per 12-hour shift, while this method can achieve approximately 10500 pieces, an increase of 1000 pieces per shift, with both higher output and better quality.

[0126] In addition, such as Figure 9As shown, another embodiment of the present invention also proposes a glass deep-processing tempering furnace inlet spacing control system. The system includes a controller and a detection element installed along the spacing roller conveyor. The output end of the detection element is connected to the controller, and the output end of the controller is connected to a driving element to drive the spacing roller conveyor to move. The controller includes:

[0127] The position calculation module 10 is used to refresh the sheet transfer tracking position to zero when the front end of the previous glass sheet reaches the end of the spacing roller conveyor based on the position signal emitted by the detection element.

[0128] The position tracking module 20 is used to track the transfer position of the previous glass piece according to the speed information emitted by the drive element, calculate the first distance between the front end of the previous glass piece and the end of the spacing roller in real time, and control the drive element to run at the line running speed to receive the next glass piece when the first distance is greater than the first safe running distance.

[0129] The drive module 30 is used to control the drive element to switch from the running speed of the connection line to the running speed of the tempering furnace, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

[0130] As a further preferred technical solution, the detection element includes a photoelectric switch B1 arranged at the initial contact position, and photoelectric switches B2, B3, and B4 arranged at a second, third, and fourth correction distance position behind the inlet of the spacing roller conveyor. The initial contact position is located at a first correction distance in front of the inlet of the spacing roller conveyor. The driving element includes motors M1, M2, and M3 arranged sequentially according to the glass flow direction. Specifically, as shown... Figure 2 As shown.

[0131] As a further preferred technical solution, the operation driving module 30 includes:

[0132] The distance calculation unit is used to track the splicing position of the next glass piece based on the speed information emitted by the driving element, and to calculate the second distance between the front end of the next glass piece and the initial splicing position in real time.

[0133] The speed control unit is used to control the drive element to drive the spacing roller conveyor to decelerate from the line running speed to the tempering furnace running speed after a set deceleration time when the second distance is equal to the second safe operating distance, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance.

[0134] As a further preferred technical solution, the controller also includes a refresh module, used to refresh the splicing position of the next glass piece according to the position signal emitted by the detection element.

[0135] As a further preferred technical solution, the refresh module is specifically used for:

[0136] When the front end of the glass passes the photoelectric switch B1, the refresh glass is positioned at the first correction distance from the inlet of the spacing roller conveyor.

[0137] When the front end of the glass passes the photoelectric switch B2, the refresh glass is positioned at the second corrected distance from the entrance of the spacing roller conveyor.

[0138] When the front end of the glass passes the photoelectric switch B3, the refresh glass is positioned at the third correction distance from the entrance of the spacing roller conveyor.

[0139] When the front end of the glass passes the photoelectric switch B4, the contact position of the refreshed glass is zero.

[0140] As a further preferred technical solution, the speed control unit is specifically used for:

[0141] When the motor M1 is controlled to drive the corresponding roller group to run at the line running speed V1 to receive the next piece of glass, the next piece of glass is fed in at the initial speed V0.

[0142] When the second distance between the front end of the next piece of glass and the initial splicing position is equal to the second safe operating distance, the control motors M1 and M2 drive the corresponding roller group to decelerate from the line running speed V1 to the tempering furnace running speed V2 after a set deceleration time. At this time, the front end of the next piece of glass reaches the photoelectric switch B3, and the distance between the front end of the next piece of glass and the end of the previous piece of glass is a preset fixed row spacing distance.

[0143] The motors M1, M2, and M3 are controlled to drive the corresponding roller groups to run at the tempering furnace operating speed V2.

[0144] As a further preferred technical solution, the controller also includes a distance compensation module, specifically used for:

[0145] Calculate the compensation distance based on the fixed row spacing;

[0146] Based on the compensation distance, the drive element is controlled to drive the spacing roller conveyor to decelerate.

[0147] It should be noted that other embodiments or implementation methods of the glass deep processing tempering furnace inlet spacing control system described in this invention can refer to the above-mentioned method embodiments, and will not be repeated here.

[0148] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0149] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0150] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling the inlet spacing of a glass deep-processing tempering furnace, characterized in that, A spacing roller conveyor is installed at the inlet of the tempering furnace. A detection element is installed along the spacing roller conveyor. The output of the detection element is connected to a controller. The output of the controller is connected to a drive element to drive the spacing roller conveyor to move. The method is applied to the controller and includes: When the position signal emitted by the detection element detects that the front end of the previous glass piece has reached the end of the spacing roller, the sheet transfer tracking position is refreshed to zero. Based on the speed information emitted by the driving element, the position of the previous glass sheet is tracked, the first distance between the front end of the previous glass sheet and the end of the spacing roller is calculated in real time, and when the first distance is greater than the first safe operating distance, the driving element is controlled to run at the line running speed to receive the next glass sheet. When controlling the drive element to switch from the line running speed to the tempering furnace running speed, the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed spacing distance. This includes tracking the splicing position of the next glass piece based on the speed information emitted by the drive element, and calculating the second distance between the front end of the next glass piece and the initial splicing position in real time. When the second distance is equal to the second safe operating distance, the drive element is controlled to drive the spacing roller to decelerate from the line running speed to the tempering furnace running speed after a set deceleration time, so that the distance between the front end of the next glass piece and the end of the previous glass piece is the preset fixed spacing distance.

2. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 1, characterized in that, When tracking the splicing position of the next glass piece based on the speed information emitted by the driving element, the method further includes: The position of the next glass pane is refreshed based on the position signal emitted by the detection element.

3. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 2, characterized in that, The detection element includes a photoelectric switch B1 arranged at the initial splicing position, and photoelectric switches B2, B3, and B4 arranged at a second, third, and fourth correction distance positions behind the inlet of the spacing roller conveyor. The initial splicing position is located at a first correction distance in front of the inlet of the spacing roller conveyor. Refreshing the splicing position of the next piece of glass according to the position signal emitted by the detection element includes: When the front end of the glass passes the photoelectric switch B1, the refresh glass is positioned at the first correction distance from the inlet of the spacing roller conveyor. When the front end of the glass passes the photoelectric switch B2, the refresh glass is positioned at the second corrected distance from the entrance of the spacing roller conveyor. When the front end of the glass passes the photoelectric switch B3, the refresh glass is positioned at the third correction distance from the entrance of the spacing roller conveyor. When the front end of the glass passes the photoelectric switch B4, the position of the glass plate is refreshed to zero.

4. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 3, characterized in that, The driving element includes motors M1, M2, and M3 arranged sequentially according to the glass flow direction; when controlling the driving element to switch from the line running speed to the tempering furnace running speed, ensuring that the distance between the front end of the next glass piece and the end end of the previous glass piece is a pre-set fixed spacing distance includes: When the motor M1 is controlled to drive the corresponding roller group to run at the line running speed V1 to receive the next piece of glass, the next piece of glass is fed in at the initial speed V0. When the second distance between the front end of the next glass piece and the initial splicing position is equal to the second safe operating distance, the control motors M1 and M2 drive the corresponding roller group to decelerate from the line running speed V1 to the tempering furnace running speed V2 after a set deceleration time. At this time, the front end of the next glass piece reaches the photoelectric switch B3, and the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

5. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 4, characterized in that, When the leading edge of the next glass piece reaches the photoelectric switch B3, the method further includes: The motors M1, M2, and M3 are controlled to drive the corresponding roller groups to run at the tempering furnace operating speed V2.

6. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 4, characterized in that, If the initial velocity V0 > 0, the method further includes: Calculate the compensation distance based on the fixed row spacing; Based on the compensation distance, the drive element is controlled to drive the spacing roller conveyor to decelerate.

7. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 3, characterized in that, The formula for calculating the first safe operating distance is: S7=L-(V2×t4)-(S 13 -S8) In the formula, S7 is the first safe operating distance, L is the glass length, V2 is the tempering furnace operating speed, T4 is the total operating time of the next piece of glass from the initial splicing position to the photoelectric switch B3, T4=T1+T2+T3, T2=(S9+S 11 S1-S3, T1 is the acceleration time from the initial speed V0 to the connecting running speed V1, T3 is the deceleration time from the connecting running speed V1 to the tempering furnace running speed V2, S1 is the running distance corresponding to the acceleration time T1, S3 is the running distance corresponding to the deceleration time T3, S9 is the distance from the photoelectric switch B1 to the entrance of the roller conveyor, S 11 S is the distance between photoelectric switch B2 and the entrance of the roller conveyor; 13 S3 is the distance from the photoelectric switch B3 to the end of the roller conveyor, and S8 is the preset fixed roller spacing distance.

8. The method for controlling the inlet spacing of a glass deep-processing tempering furnace as described in claim 3, characterized in that, The second safe operating distance is S1+S2, where S1 is the operating distance during the acceleration time T1 from the initial speed V0 to the connecting operating speed V1, and S2 is the distance traveled at a constant speed V1. S2 = S4 - S1 - S3 S4=S9+S 11 S3=V1×T3-T3×(V2-V1) / 2 In the formula, S1 is the running distance corresponding to acceleration time T1, S3 is the running distance corresponding to deceleration time T3, S9 is the distance between photoelectric switch B1 and the entrance of the roller conveyor, and S... 11 V2 is the distance between photoelectric switch B2 and the entrance of the roller conveyor, and V2 is the running speed of the tempering furnace.

9. A glass deep-processing tempering furnace inlet discharge distance control system, characterized in that, The system includes a controller and a detection element installed along the roller conveyor. The output of the detection element is connected to the controller, and the output of the controller is connected to a drive element to drive the roller conveyor to move. The controller is used to execute the inlet spacing control method for a glass deep processing tempering furnace as described in any one of claims 1-8, including: The position calculation module is used to refresh the sheet transfer tracking position to zero when the front end of the previous glass sheet reaches the end of the spacing roller based on the position signal emitted by the detection element. The position tracking module is used to track the transfer position of the previous glass piece according to the speed information emitted by the drive element, calculate the first distance between the front end of the previous glass piece and the end of the spacing roller in real time, and control the drive element to run at the line running speed to receive the next glass piece when the first distance is greater than the first safe running distance. The drive module is used to control the drive element to switch from the running speed of the connection line to the running speed of the tempering furnace, so that the distance between the front end of the next glass piece and the end of the previous glass piece is a preset fixed row spacing distance.

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