Glass cutting pressure automatic adjustment method, control device and cutting system

Abstract

The present application discloses a method for automatically adjusting glass cutting pressure, comprising the following steps: obtaining current production mode information; the production mode information includes glass width information and glass thickness information; retrieving a preset standard stress value f corresponding to the production mode information; obtaining a stress detection value f 实 The stress detection value is obtained by detecting a stress detector arranged at the exit of the annealing furnace of the glass production line; the cutting pressure control signal I is determined according to formula (1) (2); I = I 0 +λ*Δf;(1)Δf=f 实 ‑f; (2) where λ is the preset conversion coefficient, I 0 The pressure control signal I is used as the knife control current to control the cutter assembly to cut the glass. The automatic glass cutting pressure adjustment method, control device and cutting system can be used to improve the production quality of glass.

Description

Technical Field

[0001] The present disclosure generally relates to the field of glass manufacturing technology, and more particularly to a method for automatically adjusting glass cutting pressure, a control device and a cutting system. Background Art

[0002] In the industrial production process of glass, glass cutting is a relatively important link. The quality of glass cutting is directly related to whether the finished glass can meet the size requirements of the order, which directly affects the glass yield. After being refined in the melting furnace, the glass is pulled out of the annealing furnace in the form of a glass plate and enters the subsequent cutting and breaking process. However, in the actual production process, as the temperature of the glass plate decreases during the process of being transported from the annealing furnace to the cutting device, the stress between the various positions in the width direction will be different. The difference in stress between the two sides and the middle part of the glass plate in the width direction will generally be more obvious. The existing cutting device generally applies corresponding pressure in the width direction of the glass according to the set stress value for cutting. Due to the complex changes in the production environment, when each batch of glass plates is transported to the cutting device, the stress in the width direction will have an error with the above-mentioned set value. In this way, the glass plate is first cut with the set cutting pressure, and then enters the breaking device for breaking. Irregular cross-sections are easily produced at its edge, thereby affecting the glass yield. This is mainly caused by the fact that the cutting device is not configured with a cutting pressure corresponding to the stress at the cut position on the glass plate. Therefore, how to configure the cutting pressure of the cutting device to improve the quality of glass production has become an urgent problem to be solved in this field. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a method for automatically adjusting glass cutting pressure, a control device and a cutting system for improving glass production quality.

[0004] The specific technical solutions are as follows:

[0005] First aspect

[0006] The present application provides a method for automatically adjusting glass cutting pressure, the method comprising the following steps:

[0007] Acquire current production mode information; the production mode information includes glass width information and glass thickness information;

[0008] Retrieving a preset standard stress value f corresponding to the production mode information;

[0009] Get the stress detection value f 实 The stress detection value is obtained by detecting a stress detector arranged at the exit of the annealing furnace of the glass production line;

[0010] Determine the cutting pressure control signal I according to formula (1) (2);

[0011] I=I 0 +λ*Δf(1)

[0012] Δf=f 实 -f(2)

[0013] Where λ is the preset conversion coefficient, I 0 A knife-down control current corresponding to the standard stress;

[0014] The pressure control signal I is used as the lower knife control current to control the cutter assembly to cut the glass.

[0015] As a further limitation of the present application, obtaining the stress detection value specifically includes the following steps:

[0016] When it is determined that a trigger signal is received, the stress detection head on the stress detector is controlled to collect the real-time stress value in the width direction of the glass at a set frequency, and the real-time stress value is corresponded to each sampling moment in a sampling cycle and stored as a real-time stress sequence {(f 1 ,t 1 )...(f k ,t k )...(f n ,t n )}; 1≦k≦n;

[0017] The trigger signal is generated when the stress detection head collides with an edge sensor on any side edge in the width direction of the glass, and the sampling period is from the generation of the trigger signal to the movement of the stress detection head to the other side edge in the width direction of the glass; the real-time stress f in the first width range 实1 is the mean of the real-time stress of p sampling points in the real-time stress sequence within the first width range; the real-time stress of the third width range f 实3 is the average of the real-time stress of q sampling points within the third width range; the real-time stress of the second width range f 实2 is the average of the p+1th to q-1th real-time stress values ​​within the second width range; the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part between the above two in the glass width direction.

[0018] As a further limitation of the present application, using the pressure control signal I as the lower knife control current and cutting the glass specifically includes the following steps:

[0019] Using the first pressure control signal as a lowering control current of the first cutter within the first width range to cut the glass, wherein the first cutter is a tool for cutting in the width direction of the glass;

[0020] Judgment 0≦t≦t 1 When the first pressure control signal I is determined and set according to formula (3) (4) 1 ;

[0021] I 1 =I 01 +λ 1 *Δf 1 (3)

[0022] Δf 1 =f 实1 -f 01 (4)

[0023] where t 1 =W 1 / v1;f 01 W is the first standard stress within the first width range of the preset glass; 1 is the width of the first width range, v1 is the moving speed of the first cutter when cutting in the glass width direction; 1 is the preset first conversion coefficient; I 01 A first cutting control current corresponding to the first standard stress;

[0024] Using the second pressure control signal as the lowering control current of the first cutter within the second width range, and cutting the glass;

[0025] Judgement 1 <t≦t 2 When the second pressure control signal I is determined and set according to formula (5) (6) 2 ;

[0026] I 2 =I 02 +λ 2 *Δf 2 (5)

[0027] Δf 2 =f 实2 -f 02 (6)

[0028] where t 2 =(W 1 +W 2 ) / v1;f 02 W is the second standard stress of the second width range on the preset glass; 2is the width of the second width range portion, λ 2 is the preset second conversion coefficient; I 02 A second lower cut control current corresponding to the second standard stress;

[0029] Using the third pressure control signal as the lowering control current of the first cutter in the third width range, and cutting the glass;

[0030] Judgement 2 <t≦t 3 When the third pressure control signal I is determined and set according to formula (7) (8) 3 ;

[0031] I 3 =I 03 +λ 3 *Δf 3 (7)

[0032] Δf 3 =f 实3 -f 03 (8)

[0033] where t 3 =(W1+W2+W3) / v1; f 03 W is the third standard stress of the third width range on the preset glass; 3 is the width of the third width range part, λ 3 is the preset third conversion coefficient; I 03 is a third lower knife control current corresponding to the third standard stress.

[0034] As a further limitation of the present application, using the pressure control signal I as the lower knife control current and cutting the glass also includes the following steps: using the fourth pressure control signal as the lower knife control current of the second cutter in the length direction of the glass and cutting the glass; determining and setting the fourth pressure control signal I according to formula (9) (10) 4 ;

[0035] I 4 =I 04 +λ 4 *Δf 4 (9)

[0036] Δf 4 =(f m +f m+1 ) / 2-f 04 (10)

[0037] The second cutting knife is a cutting tool for cutting in the length direction of the glass; 4is the preset fourth conversion coefficient; f 04 is a fourth standard stress in the length direction of the glass; the preset trajectory of the second cutter in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head within the sampling period, I 04 is a fourth lower knife control current corresponding to the fourth standard stress.

[0038] Second aspect

[0039] The present application provides a glass cutting control device, comprising:

[0040] A mode acquisition module, used to acquire current production mode information; the production mode information includes glass width information and glass thickness information;

[0041] A standard stress acquisition module, used to acquire a preset standard stress value f corresponding to the production mode information;

[0042] Detection stress acquisition module, used to obtain stress detection value f 实 , the stress detection value f 实 It is detected by the stress detector installed at the exit of the annealing furnace of the glass production line;

[0043] A pressure control signal calculation module, used to determine a cutting pressure control signal I according to formula (1) (2);

[0044] I=I 0 +λ*Δf(1)

[0045] Δf=f 实 -f(2)

[0046] Where λ is the preset conversion coefficient, I 0 A knife-down control current corresponding to the standard stress;

[0047] The signal output module is used to transmit the pressure control signal I to the cutter assembly to cut the glass.

[0048] As a further limitation of the present application, the standard stress acquisition module includes:

[0049] The first acquisition unit is used to acquire a first standard stress f within a first width range on the preset glass. 01 ;

[0050] The second acquisition unit is used to acquire a second standard stress f within a preset second width range on the glass. 02 ;

[0051] The third acquisition unit is used to acquire a third standard stress f within a third width range on the preset glass.03 ;

[0052] The fourth acquisition unit is used to acquire a fourth standard stress f in the preset length direction of the glass. 04 .

[0053] As a further limitation of the present application, the detection stress acquisition module includes:

[0054] A trigger signal receiving unit, used to receive a trigger signal generated when the stress detection head collides with an edge sensor on any side edge in the width direction of the glass;

[0055] A sampling instruction generating unit, used for generating corresponding control instructions according to the received trigger signal, wherein the control instructions are used for controlling the stress detection head on the stress detector to collect real-time stress values ​​in the width direction of the glass at a set frequency;

[0056] A sequence generation unit is used to correspond the real-time stress value to each sampling moment in a sampling period and store it as a real-time stress sequence {(f 1 ,t 1 )...(f k ,t k )...(f n ,t n )}; 1≦k≦n;

[0057] The pressure control signal calculation module includes:

[0058] The first data processing unit is used to average the real-time stress of the first p sampling points in the sampling period to obtain the real-time stress f in the first width range. 实1 ; and taking the average of the real-time stress of the last q sampling points in the sampling period to obtain the real-time stress f of the first width range 实3 ; Also take the average of the real-time stresses from p+1 to q-1 in the sampling period to obtain the real-time stress f in the first width range 实2 ; wherein the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part located between the above two in the glass width direction;

[0059] Data conversion unit, used to convert the first standard stress f 01 Converted into the corresponding first lower knife control current I 01 ; The second standard stress f 02 Converted into the corresponding second lower knife control current I 02 ; The third standard stress f 03 Converted into the corresponding third lower knife control current I 03 ; The fourth standard stress f04 Converted into the corresponding fourth knife control current I 04 ;

[0060] The second data processing unit is used to determine the first pressure control signal I of the first cutter for generating the corresponding glass cutting pressure within the first width range according to formula (3) (4). 1 ;

[0061] I 1 =I 01 +λ 1 *Δf 1 (3)

[0062] Δf 1 =f 实1 -f 01 (4)

[0063] where λ 1 is a preset first conversion coefficient;

[0064] And according to formula (5) (6), the second pressure control signal I of the first cutter for generating the corresponding glass cutting pressure within the second width range is determined. 2 ;

[0065] I 2 =I 02 +λ 2 *Δf 2 (5)

[0066] Δf 2 =f 实2 -f 02 (6)

[0067] where λ 2 is a preset second conversion coefficient;

[0068] According to formula (7) and (8), the third pressure control signal I for generating the corresponding glass cutting pressure by the first cutter in the third width range is determined. 3 ;

[0069] I 3 =I 03 +λ 3 *Δf 3 (7)

[0070] Δf 3 =f 实3 -f 03 (8)

[0071] where λ 3 is a preset third conversion coefficient;

[0072] The third data processing unit is used to determine the fourth pressure control signal I according to formula (9) (10) 4 , the fourth pressure control signal is the lowering control current of the second cutter in the length direction of the glass;

[0073] I 4 =I 04 +λ 4 *Δf 4 (9)

[0074] Δf 4 =(f m +f m+1 ) / 2-f 04 (10)

[0075] where λ 4 is a preset fourth conversion coefficient; the preset trajectory of the second cutter in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head within the sampling period.

[0076] The third aspect

[0077] The present application provides a glass cutting system, comprising the above-mentioned glass cutting control device, and further comprising:

[0078] The stress detector is installed at the exit of the annealing furnace of the glass production line to obtain the stress detection value f in the width direction of the glass. 实 ;

[0079] The cutter assembly comprises a first cutter and a second cutter, wherein the first cutter is used for cutting in the width direction of the glass, and the second cutter is used for cutting in the length direction of the glass.

[0080] As a further limitation of the present application, the stress detector comprises:

[0081] Stress detection head, used to collect real-time stress values ​​in the width direction of the glass at a set frequency;

[0082] The edge sensor is arranged on any edge on the width direction of the glass and is used to generate a trigger signal when a collision occurs with the stress detection head.

[0083] As a further limitation of the present application, the first cutter and the second cutter include:

[0084] A cutting blade, one end of which is used to cut glass;

[0085] The pressure generating mechanism is connected to the other end of the cutting blade head and is used to generate corresponding pressure toward the glass surface according to the cutting pressure control signal I.

[0086] The beneficial effects of this application are:

[0087] Since different production batches of glass have different requirements for width and thickness, their production modes are different. Production personnel will set corresponding standard stress values ​​according to different production modes. The standard stress value corresponds to the estimated value of the stress of the glass of the production mode when it is pulled out of the annealing furnace. The estimated value is often set according to the experience of the operator. Based on the above-mentioned prior art, this embodiment measures the actual stress value of the glass after it is pulled out of the annealing furnace through a stress detector, and compares the actual stress value with the above-mentioned standard stress value to obtain the corresponding difference, and then converts it into a current value through a preset adjustment coefficient, and adds it to the lower knife control current corresponding to the standard stress, so as to obtain the control current required by the cutter assembly when cutting the glass. Compared with the control current obtained by roughly estimating the stress in the prior art, the control current obtained in this way can produce a more reasonable cutting pressure when cutting the glass, thereby effectively avoiding the phenomenon of a decrease in the glass yield rate caused by the mismatch between the cutting pressure and the glass stress, thereby improving the production quality of the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0089] Figure 1 A flow chart of a method for automatically adjusting glass cutting pressure provided in an embodiment of the present application;

[0090] Figure 2 A schematic diagram of the overall structure of a glass cutting system provided in an embodiment of the present application;

[0091] Figure 3 for Figure 2 A schematic diagram of the structure of the first cutter and the second cutter;

[0092] Numbers in the figure: 1, stress detector; 11, stress detection head; 12, edge sensor; 2, cutter assembly; 21, first cutter; 22, second cutter; 23, cutting head; 231, guide rod; 24, pressure generating mechanism; 241, fixed magnetic block; 242, support seat; 243, variable magnetic block; 244, abutment spring. DETAILED DESCRIPTION

[0093] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0094] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0095] Example 1

[0096] Please refer to Figure 1 , is a flow chart of a method for automatically adjusting glass cutting pressure provided in this embodiment, the method comprising the following steps:

[0097] Acquire current production mode information; the production mode information includes glass width information and glass thickness information;

[0098] Retrieving a preset standard stress value f corresponding to the production mode information;

[0099] Get the stress detection value f 实 The stress detection value is detected by a stress detector 1 arranged at the exit of the annealing furnace of the glass production line;

[0100] Determine the cutting pressure control signal I according to formula (1) (2);

[0101] I=I 0 +λ*Δf(1)

[0102] Δf=f 实 -f(2)

[0103] Where λ is the preset conversion coefficient, I 0 A knife-down control current corresponding to the standard stress;

[0104] The pressure control signal I is used as the lower knife control current to control the cutter assembly 2 to cut the glass.

[0105] To explain the above method in detail, please refer to Figure 2The schematic diagram of the glass cutting system structure corresponding to the method shown in the figure is used as a reference, which will be more conducive to understanding the method in this embodiment. The direction of the arrow a in the figure represents the width direction of the glass, and the direction of the arrow b represents the length direction of the glass. Since different production batches of glass have different requirements for width and thickness, this also determines that their production modes are different. The production personnel will set the corresponding standard stress value according to different production modes. The standard stress value corresponds to the estimated value of the stress of the glass of the production mode when it is pulled out of the annealing furnace. The estimated value is often set according to the experience of the operator. On the basis of the above-mentioned prior art, this embodiment measures the actual stress value of the glass after it is pulled out of the annealing furnace through a stress detector 1, and compares the actual stress value with the above-mentioned standard stress value to obtain the corresponding difference, and then converts it into a current value through a preset adjustment coefficient, and adds it to the lower knife control current corresponding to the standard stress, so as to obtain the control current required by the cutter assembly 2 when cutting the glass. Compared with the control current obtained by roughly estimating the stress in the prior art, the control current obtained in this way can produce a more reasonable cutting pressure when cutting glass, thereby effectively avoiding the phenomenon of reduced glass yield due to the mismatch between cutting pressure and glass stress, thereby improving the production quality of glass.

[0106] In the specific implementation process, since the glass needs to be cut in the width direction and the length direction respectively to obtain the finished glass of the required size, in the pressure adjustment in the width direction of the glass, obtaining the stress detection value specifically includes the following steps:

[0107] When it is determined that a trigger signal is received, the stress detection head 11 on the stress detector 1 is controlled to collect the real-time stress value in the width direction of the glass at a set frequency, and the real-time stress value is corresponded to each sampling moment in a sampling cycle and stored as a real-time stress sequence {(f 1 ,t 1 )...(f k ,t k )...(f n ,t n )}; 1≦k≦n; wherein the trigger signal is generated when the stress detection head 11 collides with the edge sensor 12 on any side edge in the width direction of the glass, and the sampling period is from the generation of the trigger signal to the movement of the stress detection head 11 to the other side edge in the width direction of the glass; the real-time stress f in the first width range 实1 is the mean of the real-time stress of p sampling points in the real-time stress sequence within the first width range; the real-time stress of the third width range f 实3 is the average of the real-time stresses of q sampling points within the third width range; the real-time stress of the second width range f 实2is the average of the p+1th to q-1th real-time stress values ​​within the second width range; the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part between the above two in the glass width direction.

[0108] like Figure 2 As shown in , when the glass is pulled out of the annealing furnace, due to the different degrees of influence of the surrounding environmental factors, the stress values ​​of the two side parts and the stress value of the middle part will also be greatly different. Therefore, by sampling the stress in the width direction of the glass by the stress detection head 11, the measured values ​​of the above three parts of stress can be roughly obtained. Figure 2 The stress detection head 11 on the stress detector 1 can be used to sample the stress of the glass in one cycle. One cycle is the process in which the stress detection head 11 moves from one side to the other side in the width direction of the glass under the drive of the first driving mechanism. The edge sensor 12 is arranged on one side in the width direction of the glass. When the stress detection head 11 collides with the edge sensor 12, it enters the above cycle. During this period, the stress detection head 11 collects the stress values ​​of each point in the width direction of the glass at a set frequency, and the collected stress values ​​of each point correspond to the sampling time in the cycle to form the real-time stress sequence. According to the real-time stress sequence, the area where each stress value is located can be roughly estimated. In order to simplify the description of this embodiment, according to the change of the stress value in the real-time stress sequence, the glass can be divided into three parts in its width direction, namely, the first width range part, the second width range part and the third width range part. In other foreseeable embodiments, the glass can also be divided more finely in its width range. Here, only the above scheme is used to illustrate the overall concept. Since the widths of the first width range portion, the second width range portion, and the third width range portion may be different, the sampling points involved in each portion may also be different.

[0109] The process of cutting the glass by using the pressure control signal I as the lower knife control current specifically includes the following steps:

[0110] Using the first pressure control signal as the lowering control current of the first cutter 21 within the first width range, and cutting the glass, the first cutter 21 is a tool for cutting in the width direction of the glass;

[0111] Judgment 0≦t≦t 1 When the first pressure control signal I is determined and set according to formula (3) (4) 1 ;

[0112] I 1 =I 01 +λ1 *Δf 1 (3)

[0113] Δf 1 =f 实1 -f 01 (4)

[0114] where t 1 =W 1 / v1;f 01 W is the first standard stress within the first width range of the preset glass; 1 is the width of the first width range, v1 is the moving speed of the first cutter 21 when cutting in the glass width direction; 1 is the preset first conversion coefficient; I 01 A first cutting control current corresponding to the first standard stress;

[0115] Using the second pressure control signal as the lowering control current of the first cutter 21 within the second width range, and cutting the glass;

[0116] Judgement 1 <t≦t 2 When the second pressure control signal I is determined and set according to formula (5) (6) 2 ;

[0117] I 2 =I 02 +λ 2 *Δf 2 (5)

[0118] Δf 2 =f 实2 -f 02 (6)

[0119] where t 2 =(W 1 +W 2 ) / v1;f 02 W is the second standard stress of the second width range on the preset glass; 2 is the width of the second width range portion, λ 2 is the preset second conversion coefficient; I 02 A second lower cut control current corresponding to the second standard stress;

[0120] Using the third pressure control signal as the lowering control current of the first cutter 21 within the third width range, and cutting the glass;

[0121] Judgement 2 <t≦t 3When the third pressure control signal I is determined and set according to formula (7) (8) 3 ;

[0122] I 3 =I 03 +λ 3 *Δf 3 (7)

[0123] Δf 3 =f 实3 -f 03 (8)

[0124] where t 3 =(W 1 +W 2 +W 3 ) / v1;f 03 W is the third standard stress of the third width range on the preset glass; 3 is the width of the third width range part, λ 3 is the preset third conversion coefficient; I 03 is a third lower knife control current corresponding to the third standard stress.

[0125] Depend on Figure 2 It can be known that the first cutter 21 moves from one side to the other side in the width direction of the glass through the second driving mechanism on the cutter assembly 2. During the above movement, the corresponding pressure is applied to the glass surface to achieve the cutting of the glass. After the glass is divided in the width direction according to the above scheme, the corresponding stress values ​​on each part, that is, the first standard stress, the second standard stress and the third standard stress, can be estimated based on experience according to the distribution range of the three parts, and the corresponding lowering knife control current can be converted according to the above standard stress values. The conversion process is obtained according to the matching of the pressure generating mechanism and the cutting head on the first cutter 21. Similar to the core idea of ​​this embodiment, the real-time stress value within the range of the above three parts is obtained through the real-time stress sequence, and the difference between the implementation stress value and the standard stress value can be converted into the corresponding current value through the preset conversion coefficient, and the lowering knife current value corresponding to the standard stress value of each part is corrected by the current value, so that the pressure control signal for controlling the cutting pressure of the first cutter 21 in the entire glass width direction can be obtained. The pressure control signal corresponds to the input current for controlling the first cutter 21, and its value is different in different parts in the glass width direction. Therefore, controlling the first cutter 21 to cut in the width direction of the glass using the above-mentioned changing control signal can be more conducive to matching the stress of different parts on the glass, thereby greatly improving the quality of glass production.

[0126] Accordingly, in Figure 2In the cutting system shown in FIG. 1 , the glass is cut in the length direction by the second cutter 22. The cutting mechanism is similar to that of the first cutter 21. Specifically, the following steps are included: using the fourth pressure control signal as the lower cutter control current of the second cutter 22 in the length direction of the glass, and cutting the glass; determining and setting the fourth pressure control signal I according to formula (9) (10) 4 ;

[0127] I 4 =I 04 +λ 4 *Δf 4 (9)

[0128] Δf 4 =(f m +f m+1 ) / 2-f 04 (10)

[0129] The second cutting knife 22 is a cutting tool for cutting in the length direction of the glass; 4 is the preset fourth conversion coefficient; f 04 is a fourth standard stress in the length direction of the glass; the preset track cut by the second cutter 22 in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head within the sampling period, I 04 is a fourth lower knife control current corresponding to the fourth standard stress.

[0130] The cutting position is determined by the dimensions specified in the customer's order, but since the stress in the width direction of the glass is different, the real-time stress sequence is also required to correct the knife control current corresponding to the standard stress preset according to the cutting position. This mechanism is similar to the adjustment process in the width direction mentioned above, so no further elaboration will be given here.

[0131] It can be imagined that, since the influence of the environment on the stress of the glass is not linear in the length direction of the glass, the width ranges along the width direction will be different at different positions in the length direction of the glass, and thus the stress detector 1 can be controlled to increase the detection frequency during the glass pulling process, that is, shorten the time between two adjacent detections, so as to achieve the purpose of more accurately dividing the glass parts.

[0132] Example 2

[0133] This embodiment provides a glass cutting control device, wherein the control device includes:

[0134] A mode acquisition module, used to acquire current production mode information; the production mode information includes glass width information and glass thickness information;

[0135] A standard stress acquisition module, used to acquire a preset standard stress value f corresponding to the production mode information;

[0136] Detection stress acquisition module, used to obtain stress detection value f 实 , the stress detection value f 实 It is detected by the stress detector 1 set at the exit of the annealing furnace of the glass production line;

[0137] A pressure control signal calculation module, used to determine a cutting pressure control signal I according to formula (1) (2);

[0138] I=I 0 +λ*Δf(1)

[0139] Δf=f 实 -f(2)

[0140] Where λ is the preset conversion coefficient, I 0 is a cutting control current corresponding to the standard stress;

[0141] The signal output module is used to transmit the pressure control signal I to the cutter assembly 2 to cut the glass.

[0142] The standard stress acquisition module includes:

[0143] The first acquisition unit is used to acquire a first standard stress f within a first width range on the preset glass. 01 ;

[0144] The second acquisition unit is used to acquire a second standard stress f within a preset second width range on the glass. 02 ;

[0145] The third acquisition unit is used to acquire a third standard stress f within a third width range on the preset glass. 03 ;

[0146] The fourth acquisition unit is used to acquire a fourth standard stress f in the preset length direction of the glass. 04 .

[0147] The detection stress acquisition module comprises:

[0148] A trigger signal receiving unit, used to receive a trigger signal generated when the stress detection head 11 collides with an edge sensor 12 on any side edge in the width direction of the glass;

[0149] A sampling instruction generating unit, used for generating corresponding control instructions according to the received trigger signal, wherein the control instructions are used for controlling the stress detection head 11 on the stress detector 1 to collect the real-time stress value in the width direction of the glass at a set frequency;

[0150] A sequence generation unit is used to correspond the real-time stress value to each sampling moment in a sampling period and store it as a real-time stress sequence {(f 1 ,t 1 )...(f k ,t k )...(f n ,t n )}; 1≦k≦n;

[0151] The pressure control signal calculation module includes:

[0152] The first data processing unit is used to average the real-time stress of the first p sampling points in the sampling period to obtain the real-time stress f in the first width range. 实1 ; and taking the average of the real-time stress of the last q sampling points in the sampling period to obtain the real-time stress f of the first width range 实3 ; Also take the average of the real-time stresses from p+1 to q-1 in the sampling period to obtain the real-time stress f in the first width range 实2 ; wherein the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part located between the above two in the glass width direction;

[0153] Data conversion unit, used to convert the first standard stress f 01 Converted into the corresponding first lower knife control current I 01 ; The second standard stress f 02 Converted into the corresponding second lower knife control current I 02 ; The third standard stress f 03 Converted into the corresponding third lower knife control current I 03 ; The fourth standard stress f 04 Converted into the corresponding fourth knife control current I 04 ;

[0154] The second data processing unit is used to determine the first pressure control signal I of the first cutter 21 for generating the corresponding glass cutting pressure within the first width range according to formula (3) (4). 1 ;

[0155] I 1 =I 01 +λ 1 *Δf 1 (3)

[0156] Δf 1 =f 实1 -f 01 (4)

[0157] where λ 1 is a preset first conversion coefficient;

[0158] And according to formula (5) (6), the second pressure control signal I of the first cutting knife 21 for generating the corresponding glass cutting pressure within the second width range is determined. 2 ;

[0159] I 2 =I 02 +λ 2 *Δf 2 (5)

[0160] Δf 2 =f 实2 -f 02 (6)

[0161] where λ 2 is a preset second conversion coefficient;

[0162] According to formulas (7) and (8), the third pressure control signal I for generating the corresponding glass cutting pressure by the first cutting blade 21 within the third width range is determined. 3 ;

[0163] I 3 =I 03 +λ 3 *Δf 3 (7)

[0164] Δf 3 =f 实3 -f 03 (8)

[0165] where λ 3 is a preset third conversion coefficient;

[0166] The third data processing unit is used to determine the fourth pressure control signal I according to formula (9) (10) 4 , the fourth pressure control signal is the lowering control current of the second cutter 22 in the length direction of the glass;

[0167] I 4 =I 04 +λ 4 *Δf 4 (9)

[0168] Δf 4 =(f m+f m+1 ) / 2-f 04 (10)

[0169] where λ 4 is a preset fourth conversion coefficient; the preset trajectory of the second cutter 22 cutting in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head 11 within the sampling period.

[0170] The various functional modules and units included in the glass cutting control device involved in this embodiment are used to implement the pressure adjustment method in Example 1. The control mechanism of the cutter assembly 2 and the stress detector 1 has been specifically described in Example 1 and will not be repeated here.

[0171] It should be pointed out here that: after the glass is pulled out of the annealing furnace, the position where the stress is measured by the stress detector 1 and the position where the glass is cut by the cutter assembly 2 often need to be provided with other necessary equipment required for the process, so the stress detector 1 and the cutter assembly 2 are often separated by a certain distance, and then the detection stress acquisition module in the glass cutting control device can be set at the stress detector 1, and other functional modules can be set at the cutter assembly 2 or other positions. The detection stress acquisition module and other related functional modules can exchange information through wired or wireless communication.

[0172] Example 3

[0173] This embodiment provides a glass cutting system, which includes the glass cutting control device described in Embodiment 2, and further includes:

[0174] Stress detector 1 is installed at the exit of the annealing furnace of the glass production line to obtain the stress detection value f in the width direction of the glass. 实 ;

[0175] The cutter assembly 2 includes a first cutter 21 and a second cutter 22. The first cutter 21 is used for cutting in the width direction of the glass, and the second cutter 22 is used for cutting in the length direction of the glass.

[0176] The stress detector comprises:

[0177] The stress detection head 11 is used to collect the real-time stress value in the width direction of the glass at a set frequency;

[0178] The edge sensor 12 is disposed on any edge in the width direction of the glass and is used to generate a trigger signal when colliding with the stress detection head 11 .

[0179] The first cutter 21 and the second cutter 22 include:

[0180] A cutting blade 23, one end of which is used for cutting glass;

[0181] The pressure generating mechanism 24 is connected to the other end of the cutting head 23 and is used for generating corresponding pressure toward the glass surface according to the cutting pressure control signal I.

[0182] Please refer to Figure 2 and Figure 3 ,exist Figure 2 The stress detection head 11 is arranged on the first slide rail, which is a fixed rail at a preset stress detection position and straddles the width direction of the glass. The stress detector 1 is also provided with a first driving mechanism for driving the stress detection head 11 to move on the first slide rail. Of course, the action of the first driving mechanism is controlled by the glass cutting control device in Example 2. Similarly, the first cutter 21 is arranged on the second slide rail. The second slide rail is also at a preset position for cutting glass along the width direction and straddles the fixed rail in the width direction of the glass. The first cutter 21 is driven by a second driving mechanism that is also controlled by the glass cutting control device to cut the glass in the manner shown in the figure. The second cutter 22 is arranged on the third slide rail. The third slide rail is at a preset position for cutting glass along the length direction of both sides of the glass and straddles the fixed rail in the length direction of the glass. The second cutter 22 is driven by a third driving mechanism that is also controlled by the glass cutting control device to cut the glass in the manner shown in the figure. Figure 3 , a feasible structure of the first cutter 21 and the second cutter 22 is shown, wherein the cutting head 23 is movably connected with the support seat 242 through the guide rod 231, the abutment spring 244 is sleeved on the guide rod 231, and a thrust is generated between the guide rod 231 and the support seat 242, and the support seat 242 is slidably matched with the second slide rail or the third slide rail. A fixed magnetic block 241 is arranged on the cutting head 23, and a variable magnetic block 243 is arranged on the support seat 242, wherein the variable magnetic block 243 can be implemented as an electromagnet, and when the glass cutting control device inputs the cutting pressure control signal I to the variable magnetic block 243, its magnetism can be changed, thereby changing the attraction between the cutting head 23 and the support seat 242, and then changing the pressure applied by the cutting head 23 to the glass surface for cutting the glass. Of course, in the implementation of the pressure generating mechanism, other technologies known in the art can also be included, which will not be repeated here.

[0183] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A method for automatically adjusting glass cutting pressure, characterized in that: The method comprises the following steps: Acquire current production mode information; the production mode information includes glass width information and glass thickness information; Retrieving a preset standard stress value f corresponding to the production mode information; Get the stress detection value f 实 The stress detection value is detected by a stress detector (1) arranged at the exit of the annealing furnace of the glass production line; Determine the cutting pressure control signal I according to formula (1) (2); I=I0+λ*Δf(1) Δf=f 实 -f(2) Wherein λ is the preset conversion coefficient, and I0 is the knife-down control current corresponding to the standard stress; The pressure control signal I is used as the lower knife control current to control the cutter assembly (2) to cut the glass.

2. The method for automatically adjusting glass cutting pressure according to claim 1, characterized in that: Obtaining stress detection values ​​specifically includes the following steps: When it is determined that a trigger signal is received, the stress detection head (11) on the stress detector (1) is controlled to collect real-time stress values ​​in the width direction of the glass at a set frequency, and the real-time stress values ​​are associated with each sampling moment in a sampling cycle and stored as a real-time stress sequence {(f1, t1) ... (f k ,t k )...(f n ,t n )}; 1≦k≦n; wherein the trigger signal is generated when the stress detection head (11) collides with the edge sensor (12) on any one side edge in the width direction of the glass, and the sampling period is from the generation of the trigger signal to the movement of the stress detection head (11) to the other side edge in the width direction of the glass; the real-time stress f in the first width range 实1 is the mean of the real-time stress of p sampling points in the first width range in the real-time stress sequence; the real-time stress of the third width range f 实3 is the mean of the real-time stress of q sampling points within the third width range; the real-time stress of the second width range f 实2 is the average of the p+1th to q-1th real-time stress values ​​within the second width range; the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part between the above two in the glass width direction.

3. The method for automatically adjusting glass cutting pressure according to claim 2, characterized in that: Using the pressure control signal I as the lower knife control current and cutting the glass specifically includes the following steps: Using the first pressure control signal as a cutting control current of a first cutter (21) within the first width range to cut the glass, wherein the first cutter (21) is a tool for cutting in the width direction of the glass; When it is judged that 0≦t≦t1, the first pressure control signal I1 is determined and set according to formulas (3) and (4); I1=I 01 +λ1*Δf1(3) Δf1=f 实1 -f 01 (4) Where t1 = W1 / v1; f 01 is a first standard stress within a first width range preset on the glass; W1 is a width of the first width range portion; v1 is a moving speed of the first cutter (21) when cutting in the glass width direction; λ1 is a first conversion coefficient preset; I 01 A first cutting control current corresponding to the first standard stress; Using the second pressure control signal as the lowering control current of the first cutter within the second width range, and cutting the glass; When it is determined that t1<t≦t2, the second pressure control signal I2 is determined and set according to formulas (5) and (6); I2=I 02 +λ2*Δf2(5) Δf2=f 实2 -f 02 (6) Where t2 = (W1 + W2) / v1; f 02 is the second standard stress of the second width range on the preset glass; W2 is the width of the second width range portion, λ2 is the preset second conversion coefficient; I 02 A second lower cut control current corresponding to the second standard stress; Using the third pressure control signal as the lowering control current of the first cutter (21) within the third width range, and cutting the glass; When it is determined that t2<t≦t3, the third pressure control signal I3 is determined and set according to formulas (7) and (8); I3=I 03 +λ3*Δf3(7) Δf3=f 实3 -f 03 (8) Where t3 = (W1 + W2 + W3) / v1; f 03 is the third standard stress of the third width range on the preset glass; W3 is the width of the third width range portion, λ3 is the preset third conversion coefficient; I 03 is a third lower knife control current corresponding to the third standard stress.

4. The method for automatically adjusting glass cutting pressure according to claim 2, characterized in that: The method of using the pressure control signal I as the lower cutter control current and cutting the glass also includes the following steps: using the fourth pressure control signal as the lower cutter control current of the second cutter (22) in the length direction of the glass and cutting the glass; determining and setting the fourth pressure control signal I4 according to formula (9) (10); I4=I 04 +λ4*Δf4(9) Δf4=(f m +f m+1 ) / 2-f 04 (10) The second cutting knife (22) is a cutting knife for cutting in the length direction of the glass; λ4 is a preset fourth conversion coefficient; f 04 is a fourth standard stress in the length direction of the glass; the preset track cut by the second cutter (22) in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head within the sampling period, I 04 is a fourth lower knife control current corresponding to the fourth standard stress.

5. A glass cutting control device, characterized in that: include: Mode acquisition module, used to obtain current production mode information; The production mode information includes glass width information and glass thickness information; A standard stress acquisition module, used to acquire a preset standard stress value f corresponding to the production mode information; Detection stress acquisition module, used to obtain stress detection value f 实 , the stress detection value f 实 The stress is detected by a stress detector (1) arranged at the exit of the annealing furnace of the glass production line; A pressure control signal calculation module, used to determine a cutting pressure control signal I according to formula (1) (2); I=I0+λ*Δf(1) Δf=f 实 -f(2) Wherein λ is the preset conversion coefficient, and I0 is the knife-down control current corresponding to the standard stress; The signal output module is used to transmit the pressure control signal I to the cutter assembly (2) to cut the glass.

6. The glass cutting control device according to claim 5, characterized in that: Standard stress acquisition modules include: The first acquisition unit is used to acquire a first standard stress f within a first width range on the preset glass. 01 ; The second acquisition unit is used to acquire a second standard stress f within a preset second width range on the glass. 02 ; The third acquisition unit is used to acquire a third standard stress f within a third width range on the preset glass. 03 ; The fourth acquisition unit is used to acquire a fourth standard stress f in the preset length direction of the glass. 04 .

7. The glass cutting control device according to claim 6, characterized in that: The detection stress acquisition module comprises: A trigger signal receiving unit, used for receiving a trigger signal generated when a stress detection head (11) collides with an edge sensor (12) on any side edge in the width direction of the glass; A sampling instruction generating unit, used for generating corresponding control instructions according to the received trigger signal, wherein the control instructions are used for controlling the stress detection head (11) on the stress detector (1) to collect real-time stress values ​​in the width direction of the glass at a set frequency; A sequence generation unit is used to correspond the real-time stress value to each sampling moment in a sampling period and store it as a real-time stress sequence {(f1, t1)...(f k ,t k )...(f n ,t n )}; 1≦k≦n; The pressure control signal calculation module includes: The first data processing unit is used to average the real-time stress of the first p sampling points in the sampling period to obtain the real-time stress f in the first width range. 实1 ; and taking the average of the real-time stress of the last q sampling points in the sampling period to obtain the real-time stress f of the first width range 实3 ; Also take the average of the real-time stresses from p+1 to q-1 in the sampling period to obtain the real-time stress f in the first width range 实2 ; wherein the first width range and the third width range are the parts distributed on both sides in the preset glass width direction, and the second width range is the part located between the above two in the glass width direction; Data conversion unit, used to convert the first standard stress f 01 Converted into the corresponding first knife control current I 01 ; The second standard stress f 02 Converted into the corresponding second lower knife control current I 02 ; The third standard stress f 03 Converted into the corresponding third lower knife control current I 03 ; The fourth standard stress f 04 Converted into the corresponding fourth knife control current I 04 ; A second data processing unit, used for determining a first pressure control signal I1 for generating a corresponding glass cutting pressure by the first cutter (21) within the first width range according to formulas (3) and (4); I1=I 01 +λ1*Δf1(3) Δf1=f 实1 -f 01 (4) Wherein λ1 is the preset first conversion coefficient; And according to formula (5) (6), a second pressure control signal I2 for generating a corresponding glass cutting pressure by the first cutting knife (21) within the second width range is determined; I2=I 02 +λ2*Δf2(5) Δf2=f 实2 -f 02 (6) Wherein λ2 is the preset second conversion coefficient; Furthermore, according to formulas (7) and (8), a third pressure control signal I3 for generating a corresponding glass cutting pressure by the first cutting knife (21) within the third width range is determined; I3=I 03 +λ3*Δf3(7) Δf3=f 实3 -f 03 (8) Wherein λ3 is a preset third conversion coefficient; A third data processing unit is used to determine a fourth pressure control signal I4 according to formula (9) (10), wherein the fourth pressure control signal is a lowering control current of the second cutter (22) in the length direction of the glass; I4=I 04 +λ4*Δf4(9) Δf4=(f m +f m+1 ) / 2-f 04 (10) Wherein λ4 is a preset fourth conversion coefficient; the preset track cut by the second cutter (22) in the length direction of the glass is located between the mth sampling point and the m+1th sampling point collected by the stress detection head (11) within the sampling period.

8. A glass cutting system, characterized in that: The glass cutting control device according to claim 7 further comprises: The stress detector (1) is installed at the exit of the annealing furnace of the glass production line and is used to obtain the stress detection value f in the width direction of the glass. 实 ; A cutter assembly (2), the cutter assembly (2) comprising a first cutter (21) and a second cutter (22), the first cutter (21) being used for cutting in the width direction of the glass, and the second cutter (22) being used for cutting in the length direction of the glass.

9. The glass cutting system according to claim 8, characterized in that: The stress detector comprises: A stress detection head (11) is used to collect real-time stress values ​​in the width direction of the glass at a set frequency; An edge sensor (12) is arranged on an edge on any side in the width direction of the glass and is used to generate a trigger signal when a collision occurs with the stress detection head (11).

10. The glass cutting system according to claim 8, characterized in that: The first cutter (21) and the second cutter (22) include: A cutting blade (23), one end of which is used for cutting glass; The pressure generating mechanism (24) is connected to the other end of the cutting blade (23) and is used to generate corresponding pressure toward the glass surface according to the cutting pressure control signal I.

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