Preheating type glue storage barrel control system of glue mixer

Abstract

A preheated adhesive storage tank control system for a glue mixer, based on the operating temperature T during mixing of the component adhesive solutions. g Calculate the target heating temperature T1 of the adhesive in the preheating zone. S The target heating temperature T2 of the glue supply area S Read the actual temperature value T1 of the adhesive in the preheating zone detected by the first temperature probe, and read the actual liquid level height value H of the adhesive supply zone detected by the first liquid level probe. When T1≥T1 S When H ≤ the set safe glue height value H1 in the glue supply area, open the first glue outlet in the preheating area to allow the preheated glue in the preheating area to flow into the glue supply area; read the actual glue temperature value T2 detected by the second temperature probe in the glue supply area, and when T2 ≥ T2 S When both component A and component B of the two-component adhesive meet the supply conditions, the metering pump is activated, causing the adhesive solution in the supply zone of each storage tank to flow through its respective second outlet to the mixing pipe and supply adhesive to the laminating machine. This invention enables precise control of the adhesive flow rate and temperature, improving the reliability of the adhesive supply.

Description

Technical Field

[0001] This invention relates to the field of adhesive mixing technology, and in particular to a preheated adhesive storage tank for an adhesive mixer and its control system. Background Technology

[0002] In solvent-free laminating machines, the adhesive used for lamination needs to be heated to a certain temperature in a storage tank before being delivered to the laminating equipment to ensure uniform adhesive coating and the quality of the laminated product. Traditional methods of adding adhesive to storage tanks lack temperature and adhesive level control. Adding adhesive at a lower temperature directly to the storage tank may cause it to flow directly from the outlet into the laminating machine, resulting in defective products. To address this issue, existing patent CN215390469U discloses a preheated storage tank, comprising a partition dividing the internal space of the storage tank into an upper and lower storage area, an adhesive inlet located on the storage tank and connected to the upper storage area, an adhesive outlet located on the storage tank and connected to the lower storage area, a channel on the partition connecting the upper and lower storage areas, a valve for sealing the channel, a valve drive assembly for driving the valve, and a heating assembly for heating the upper storage area. This type of adhesive storage tank lacks specific methods for controlling the temperature of the adhesive solution, resulting in insufficient precision in controlling the viscosity of the adhesive solution and affecting the bonding effect with the substrate. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a preheated glue storage tank control system for a glue mixer, which can accurately control the flow rate and temperature of the glue liquid and improve the reliability of glue supply.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a preheating glue storage tank control system for a glue mixer, wherein the preheating glue storage tank includes a tank body and a lid disposed on top of the tank body; the tank body is provided with a preheating zone and a glue supply zone below the preheating zone; the lid is provided with a first liquid level probe, a second liquid level probe, a glue inlet, a glue outlet switch assembly, and a first temperature probe; the preheating zone is provided with a preheating glue tank, the preheating glue tank, the tank body, and the lid are connected by a flange, and the outer bottom of the preheating glue tank is provided with a first heating element for heating the preheating zone. The preheating glue tank has a first circular hole and a first dispensing nozzle at its bottom. An insulating ring is installed inside the first circular hole, with its lower part facing the glue supply area and its upper part directly opposite the first liquid level probe on the tank lid. The dispensing nozzle switch assembly controls the opening and closing of the first dispensing nozzle. A second heater for heating the glue supply area is located at the bottom of the tank body. A second dispensing nozzle communicating with the glue supply area is located at the bottom of the tank body. A second temperature probe inserted into the glue solution in the glue supply area is located on the tank body. The temperature T of the single-component two-component glue is determined according to its operating temperature. g Calculate the target heating temperature T1 of the adhesive in the preheating zone. S and the target heating temperature T2 in the glue supply area SThe actual temperature T1 of the adhesive in the preheating zone is detected using the first temperature probe, and the actual liquid level H in the supply zone is detected using the first liquid level probe. When T1 ≥ T1 S When H ≤ the set safe glue height value H1 in the glue supply area, open the first flow port in the preheating zone to allow the preheated glue to flow into the glue supply area; use the second temperature probe to detect the actual glue temperature value T2 in the glue supply area, and when T2 ≥ T2 S When the components of adhesive A and B meet the conditions for being mixable, they enter the heating and heat preservation state. When both components meet the conditions for being mixable, their respective metering pumps can be started, allowing the adhesive liquid in the corresponding storage tank supply area to flow through their respective second flow outlets to the mixing pipe and supply adhesive to the laminating machine.

[0005] As an improvement, when using manual small buckets for adding glue, the control process for the preheated glue storage tank is as follows:

[0006] S11 inputs the intended working temperature Tg of the adhesive solution, and according to T2 S =Tg+K1,T1 S =T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone and the adhesive supply zone respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the adhesive supply zone respectively. K1 = 0~5℃ and K2 = 3~5℃ are respectively taken.

[0007] S12 inputs the minimum safe glue height value h1 in the preheating zone and reads the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, it is confirmed that the first glue outlet is closed. A small bucket of glue weighing 20 kg is added to the preheating zone through the manual glue inlet, and the first heater is started to heat at full power. The value of h1 is 10~30 mm.

[0008] S13 reads the real-time temperature T1 value of the adhesive liquid in the preheating zone detected by the first temperature probe during the full-power heating process of the first heater, and compares it with T1. S When comparing, if T1≥T1 S When -K3 is reached, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃. This applies when T1≥T1 is not met. S When K3 is reached, the first heater will continue to operate at full power.

[0009] S14 reads the real-time temperature T1 value of the adhesive solution in the preheating zone detected by the first temperature probe during the low-power heating process of the first heater, and compares it with T1. S When comparing, if T1≥T1 S When the first heater stops heating, stop heating.

[0010] S15 inputs the safe glue level value H1 in the glue supply area, reads the liquid level value H in the glue supply area detected by the first liquid level probe, and controls the glue outlet switch assembly to open the first glue outlet when H≤H1, so that the glue in the preheating area flows into the glue supply area. The value of H1 is 30~50mm.

[0011] S16 When the first dispensing nozzle is opened, the dispensing height h in the preheating zone is read by the second liquid level probe. When h ≤ h1, the first dispensing nozzle is closed, the dispensing in the preheating zone is stopped from flowing into the dispensing zone, and the process proceeds to step S12.

[0012] S17 After the first dispensing nozzle opens, the second heater is activated to heat the dispensing area and the temperature T2 of the dispensing solution in the dispensing area is read from the second temperature probe. When T2 ≥ T2 S When the adhesive components in the adhesive supply area meet the conditions for mixing, the metering pump can be started to supply adhesive to the laminating machine when both components A and B meet the conditions for mixing. If the conditions are not met, the second heater will continue to heat the machine.

[0013] During the glue supply process from the glue supply zone to the laminating machine, S18 reads the glue temperature value T2 obtained from the second temperature probe in the glue supply zone. When T2 ≥ T2... S When K4 is reached, the second heater stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0014] As an improvement, when using an automatic glue dispensing method for large drums, the control process for the preheated glue storage tank is as follows:

[0015] S21 inputs the intended working temperature Tg of the adhesive solution, and according to T2 S =Tg+K1,T1 S =T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone and the adhesive supply zone respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the adhesive supply zone respectively. K1 = 0~5℃ and K2 = 3~5℃ are respectively taken.

[0016] S22 inputs the minimum safe glue height value h1 in the preheating zone and reads the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, it confirms that the first glue outlet is closed, glue is added to the preheating zone through the automatic glue filling port, and the first heater is started for full power heating. The value of h1 is 10~30mm.

[0017] S23 inputs the maximum safe glue height value h2 in the preheating zone and reads the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≥h2, the glue delivery pipe switch valve is closed to stop the automatic glue addition to the large tank.

[0018] S24 reads the real-time temperature T1 value of the adhesive solution in the preheating zone detected by the first temperature probe during the full-power heating process of the first heater, and compares it with T1. S When comparing, if T1≥T1 S When K3 is reached, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃; if the condition is not met, the first heater continues to maintain full-power heating mode.

[0019] S25 reads the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe during the low-power heating process of the first heater, and compares it with T1. S When comparing, if T1≥T1 S When the first heater stops heating, stop heating.

[0020] S26 inputs the safe glue level value H2 in the glue supply area, reads the liquid level height value H in the glue supply area detected by the first liquid level probe, and compares it with H2. When H≤H2, the glue outlet switch assembly is controlled to open the first glue outlet, so that the glue in the preheating area flows into the glue supply area. The value of H2 is 50~80mm.

[0021] S27 After the first dispensing nozzle is opened, the dispensing height h in the preheating zone is read by the second liquid level probe. When h ≤ h1, the first dispensing nozzle is closed, the dispensing in the preheating zone is stopped from flowing into the dispensing zone, and the process proceeds to step S22.

[0022] S28 After the first dispensing nozzle opens, the second heater is activated to heat the dispensing area and the temperature value T2 of the dispensing solution in the dispensing area obtained by the second temperature probe is read and compared with T2. S When comparing, if T2≥T2 S When the adhesive components in the adhesive supply area meet the conditions for mixing, the metering pump can be started to supply adhesive to the laminating machine when both components A and B meet the conditions for mixing. If the conditions are not met, the second heater will continue to heat the machine.

[0023] During the glue supply process from the glue supply zone to the laminating machine, S29 reads the glue temperature value T2 obtained from the second temperature probe in the glue supply zone. When T2 ≥ T2... S When K4 is reached, the second heater stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0024] As an improvement, when using a small-quantity, rapid heating method for adding adhesive, the control process for the preheated adhesive storage tank is as follows:

[0025] S31 inputs the intended working temperature Tg of the adhesive solution, and according to T2 S =Tg+K1,T1S=T2 S-K2 is used to calculate the target temperature of the adhesive in the preheating zone and the adhesive supply zone respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the adhesive supply zone respectively. K1 = 0~5℃ and K2 = 3~5℃ are respectively taken.

[0026] S32 inputs the minimum safe glue height value h1 and the quantitative glue addition height h3 in the preheating zone, and reads the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, it confirms that the first glue outlet is in the closed state, adds glue of weight Q to the preheating zone, and starts the first heater for full power heating.

[0027] S33 reads the real-time temperature T1 of the adhesive in the preheating zone detected by the first temperature probe during the full-power heating process of the first heater. When T1 ≥ T1 S When K3 is -K3, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃. If the condition is not met, the first heater continues to maintain full-power heating mode.

[0028] S34 reads the real-time temperature T1 of the adhesive in the preheating zone detected by the first temperature probe during the low-power heating process of the first heater. When T1 ≥ T1 S When this occurs, stop heating with the first heater;

[0029] S35 inputs the safe glue level value H1 in the glue supply area, reads the liquid level value H in the glue supply area detected by the first liquid level probe, and controls the glue outlet switch assembly to open the first glue outlet when H≤H1, so that the glue in the preheating area flows into the glue supply area. The value of H1 is 30~50mm.

[0030] S36 When the first dispensing nozzle is opened, the dispensing height h in the preheating zone is read by the second liquid level probe. When h ≤ h1, the first dispensing nozzle is closed, the dispensing in the preheating zone is stopped from flowing into the dispensing zone, and the process proceeds to step S32.

[0031] S37 After the first dispensing nozzle opens, the second heater is activated to heat the dispensing area and the temperature T2 of the dispensing solution in the dispensing area is read from the second temperature probe. When T2 ≥ T2 S When the adhesive components in the adhesive supply area meet the conditions for mixing, the metering pump can be started to supply adhesive to the laminating machine when both components A and B meet the conditions for mixing. If the conditions are not met, the second heater will continue to heat the machine.

[0032] During the glue supply process from the glue supply zone to the laminating machine, S38 reads the glue temperature value T2 obtained from the second temperature probe in the glue supply zone. When T2 ≥ T2 S When K4 is reached, the second heater stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0033] As an improvement, the center of the bucket lid is provided with a mounting base, the first liquid level probe is mounted on the mounting base, and the second liquid level probe, the manual glue filling port, the automatic glue filling port, the observation lens, the glue dispensing port switch assembly and the first temperature probe are arranged around the mounting base.

[0034] As an improvement, an inner rotating wall is provided on one side of the preheating glue tank, and a clearance area is formed on the outer side of the inner rotating wall; the power adapter cable of the first heater is connected from the clearance area of ​​the preheating glue tank to the power socket of the glue supply area.

[0035] As an improvement, the glue outlet switch assembly includes a cylinder, a cylinder seat, a sliding sleeve, a sliding rod, a plastic ball, and a positioning ring; the positioning ring has a hollow toothed structure, and the position of the first glue outlet is aligned vertically with the glue outlet switch assembly on the bucket lid. When the cylinder is opened, the plastic ball presses down to close the first glue outlet, and the positioning ring slides up and down within the thin-walled circular ring inside the first glue outlet. The automatic glue dispensing port is connected to a glue delivery pipe, and an electrically controlled switch valve is provided on the glue delivery pipe.

[0036] As an improvement, an external frame is provided at a convenient location on the outer wall of the glue bucket. The external frame has a wiring port that corresponds to and communicates with the clearance area of ​​the preheating zone. The external frame has a wiring port cover, and the wiring port cover has a power socket.

[0037] As an improvement,

[0038] 1) When using manual small bucket glue dispensing or large bucket automatic glue dispensing methods, the preheating zone volume and height...

[0039] The degree satisfies: V1max = h 1E *10 -6* *[0.785*(d1 2 -d3 2 )-S C (1)

[0040] (h 1E -h1)*10 -6* *[0.785*(d1 2 -d3 2 )-S C ≥1.1*20 / g

[0041] h 1E ≥2.2*10 7* / [0.785*(d1 2 -d3 2 )-S C ]+h1 (2)

[0042] In the above formula:

[0043] V1max is the maximum volume of the preheating zone, in dm². 3 ;

[0044] h 1E The height of the preheated glue bucket, in mm;

[0045] d1 is the inner diameter of the preheated glue bucket, in mm;

[0046] d3 is the outer diameter of the insulating ring, in mm;

[0047] S C The area of ​​the clearance zone for the preheated glue bucket, in mm. 2 ;

[0048] h1 is the minimum liquid level height in the preheated glue tank, in mm;

[0049] g represents the density of the glue, in kg / dm³. 3 ;

[0050] 2) When using manual small bucket dispensing or automatic large bucket dispensing, the volume of the glue supply area and the safe glue level must meet the following requirements:

[0051] 0.785*10 -3 *H1*d2 2 *g≥Δt*B*V*m*100 / (100+N)

[0052] 0.785*10 -6 *(H max -H1)*d2 2 *g≥20

[0053] H1≥1.27*10 6 *B*V*m / [d2 2 *g*(100+N)] (3)

[0054] H max ≥2.55*10 7 / (d2 2 *g)+H1 (4)

[0055] In the above formula:

[0056] H1 is the minimum safe glue height value in the glue supply area;

[0057] d2 is the inner diameter of the glue bucket, in mm;

[0058] g represents the density of the glue, in kg / dm³. 3 ;

[0059] Δt is the minimum glue supply time in the glue supply area when there is no glue replenishment in the preheating zone, in minutes;

[0060] B represents the adhesive application width, in meters (m).

[0061] V represents the host speed, in m / m.

[0062] m represents the amount of adhesive applied, in g / m. 2 ;

[0063] N represents the percentage content of component A in the two-component adhesive;

[0064] 3) The heating power of the first heater meets the following requirement: when the ambient temperature is 10 degrees, the heating time for filling a 20 kg bucket of adhesive liquid in the preheating zone and heating it to 35 degrees is no more than 20 minutes.

[0065] 4) Diameter d of the first flow nozzle v When the dispensing nozzle is fully open, the time for 20 kg of preheated adhesive to flow from the preheating zone to the dispensing zone is less than 5 minutes;

[0066] 5) The heating power value of the second heater meets the following requirement: when a 20 kg barrel of adhesive liquid from the preheating zone is added to the adhesive supply area and heated to the working temperature Tg, the heating time is less than 5 minutes.

[0067] 6) When using the automatic glue dispensing method in large drums, h 1E V1max, H1 and H max From the formulas respectively

[0068] (1), (2), (3) and (4) are calculated; h3 satisfies the following conditions and is calculated:

[0069] (h3-h1)*10 -6* *[0.785*(d1 2 -d3 2 )-S C ]=M / g (5)

[0070] H3 = M * 10 6* / [0.785*(d1 2 -d3 2 )-S C ]+h1 (6)

[0071] In the above formula: M is the amount of adhesive added each time, in kg.

[0072] The beneficial effects of this invention compared to the prior art are:

[0073] It provides three modes of glue tank filling methods and corresponding control processes, which allow the temperature of the glue added to the glue tank to be set and controlled, the temperature and flow rate of the glue flowing out of the preheating zone to be set and controlled, and the glue temperature at the glue outlet to be controlled. This ensures that the glue in the entire glue tank is supplied under controllable conditions, which greatly improves the reliability of glue supply and avoids the scrapping of composite products due to unqualified glue supply. Attached Figure Description

[0074] Figure 1 This is a schematic diagram of a preheated glue storage tank.

[0075] Figure 2 This is a parameter diagram for a preheated glue storage tank.

[0076] Figure 3 This is a schematic diagram of a glue bucket lid.

[0077] Figure 4 This is a cross-sectional view of a preheated glue storage tank.

[0078] Figure 5 This is a schematic diagram of the glue dispensing port switch assembly.

[0079] Figure 6 This is a control flowchart for a preheated glue storage tank when using a manual small bucket method for adding glue.

[0080] Figure 7 This is a control flowchart for a preheated glue storage tank when using an automatic glue dispensing method in a large container.

[0081] Figure 8 This is a control flow chart for a preheated glue storage tank when using a small-quantity, rapid heating method for adding glue. Detailed Implementation

[0082] The present invention will now be further described with reference to the accompanying drawings.

[0083] like Figures 1 to 5As shown, a preheated glue storage tank and its control system for a glue mixer are disclosed. The preheated glue storage tank includes a tank body 18 and a lid 4 on top of the tank body 18. The tank body 18 contains a preheating zone 1 and a glue supply zone 2 located below the preheating zone 1. The lid 4 is equipped with a first liquid level probe 8, a second liquid level probe 9, a manual glue dispensing port 6, an automatic glue dispensing port 7, a glue dispensing port switch assembly 12, and a first temperature probe 10. A mounting base is located at the center of the lid 4. The first liquid level probe 8 is mounted on the mounting base, and the second liquid level probe 9, the manual glue dispensing port 6, the automatic glue dispensing port 7, the observation lens 16, the glue dispensing port switch assembly 12, and the first temperature probe 10 are arranged around the mounting base. The preheating zone 1 is equipped with a preheating glue tank 3. The top of the preheating glue tank 3 is open and has a flange connected to the lid. The bottom of the preheating glue tank 3 is equipped with a first heater 5 for heating the preheating zone. The bottom of the preheating glue tank 3 is equipped with a first circular hole 22 and a first glue outlet 31. An isolation ring 13 is provided in the first circular hole 22. The lower part of the isolation ring 13 faces the glue supply area, and the upper part faces the first liquid level probe 8 on the lid. The glue outlet switch assembly 12 is used to control the opening and closing of the first glue outlet 31. An inner rotating wall 32 is provided on one side of the preheating glue tank 3. An avoidance area 33 is formed on the outer side of the inner rotating wall 32. The power adapter cable 20 of the first heater 5 is connected from the avoidance area 33 of the preheating glue tank 3 to the power socket 15 of the glue supply area 2. The glue outlet switch assembly 12 includes a cylinder 121, a cylinder seat 122, a sliding sleeve 123, a sliding rod 124, a plastic ball 125, and a positioning ring 126. The positioning ring 126 has a hollow toothed structure. The position of the first glue outlet 31 is aligned vertically with the glue outlet switch assembly 12 on the glue bucket cover 4. When the cylinder 121 is opened, the plastic ball 125 presses down and closes the first glue outlet 31. The positioning ring 126 slides up and down in the thin-walled circular ring inside the first glue outlet 31. The automatic glue filling port 7 is connected to a glue delivery pipe 21, and an electrically controlled switch valve 17 is provided on the glue delivery pipe 21. The upper part of the barrel 18 is open and has a flange for connecting to the preheated glue barrel 3. The bottom of the barrel 18 is provided with a second heater 19 for heating the glue in the glue supply area 2. The bottom of the barrel 18 is provided with a second glue outlet 181 that communicates with the glue supply area 2. The barrel 18 is provided with a second temperature probe 11 that extends into the glue supply area 2 near the bottom. An external frame 182 is provided at a convenient position on the outer wall of the barrel 18. The external frame 182 is provided with a wiring port that corresponds to and communicates with the clearance area 33 of the preheating area. The external frame is provided with a wiring port cover 14, and the wiring port cover 14 is provided with a power socket 15.

[0084] 1. For example Figure 6 As shown, when using manual small buckets to add glue, the control process for the preheated glue storage tank is as follows:

[0085] S11 inputs the intended working temperature Tg of the adhesive solution, and according to T2S =Tg+K1,T1 S =T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone 1 and the adhesive supply zone 2 respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone 1 and the adhesive supply zone 2 respectively. K1 = 0~5℃ and K2 = 3~5℃ respectively.

[0086] S12 inputs the minimum safe glue height value h1 in the preheating zone 1 and reads the liquid level height value h in the preheating zone 1 detected by the second liquid level probe 9. When h≤h1, it is confirmed that the first glue outlet 31 is in the closed state. 20 kg of glue is added to the preheating zone 1 through the manual glue inlet 6, and the first heater 5 is started to heat at full power. The value of h1 is 10~30 mm.

[0087] S13 reads the real-time temperature T1 value of the adhesive solution in the preheating zone 1 detected by the first temperature probe 10 during the full-power heating process of the first heater 5, and compares it with T1. S When comparing, if T1≥T1 S When -K3 is reached, the first heater 5 switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃. When T1≥T1 is not met... S -K3 continues to maintain the full-power heating mode of the first heater 5;

[0088] S14 reads the real-time temperature T1 value of the adhesive solution in the preheating zone 1 detected by the first temperature probe 10 during the low-power heating process of the first heater 5, and compares it with T1 S When comparing, if T1≥T1 S When this happens, stop heating the first heater 5;

[0089] S15 inputs the safe glue height value H1 of glue supply area 2, reads the liquid level height value H in glue supply area 2 detected by the first liquid level probe 8, and when H≤H1, controls the glue outlet switch assembly 12 to open the first glue outlet 31, so that the glue in preheating area 1 flows into glue supply area 2. The value of H1 is 30~50mm.

[0090] S16 When the first dispensing port 31 is opened, the dispensing height h of the preheating zone 1 detected by the second liquid level probe 9 is read. When h≤h1, the first dispensing port 31 is closed, the dispensing flow of the preheating zone 1 into the dispensing zone 2 is stopped, and the process proceeds to step S12.

[0091] S17 After the first dispensing nozzle 31 is opened, the second heater 19 is started to heat and the temperature value T2 of the glue in the dispensing area 2 obtained by the second temperature probe 11 is read. When T2 ≥ T2 SWhen the adhesive components in the adhesive supply zone 2 meet the mixing conditions, the metering pump is started to supply adhesive to the laminating machine when both components A and B meet the mixing conditions. If the conditions are not met, the second heater 19 continues to heat the machine.

[0092] During the glue supply process from glue supply zone 2 to the laminating machine, S18 reads the glue temperature value T2 obtained by the second temperature probe 11 in glue supply zone 2. When T2 ≥ T2 S When K4 is reached, the second heater 19 stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0093] 2. For example Figure 7 As shown, when using the automatic glue dispensing method in large drums, the control process of the preheated glue storage tank is as follows:

[0094] S21 inputs the intended working temperature Tg of the adhesive solution, and according to T2 S =Tg+K1,T1 S =T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone 1 and the adhesive supply zone 2 respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone 1 and the adhesive supply zone 2 respectively. K1 = 0~5℃ and K2 = 3~5℃ respectively.

[0095] S22 inputs the minimum safe glue height value h1 of the preheating zone 1 and reads the liquid level height value h in the preheating zone 1 detected by the second liquid level probe 9. When h≤h1, it is confirmed that the first glue outlet 31 is closed, glue is added to the preheating zone 1 through the automatic glue outlet 7, and the first heater 5 is started to heat at full power. The value of h1 is 10~30mm.

[0096] S23 inputs the maximum safe glue height value h2 in the preheating zone 1 and reads the liquid level height value h in the preheating zone 1 detected by the second liquid level probe 9. When h≥h2, the glue delivery pipe switch valve is closed to stop the automatic glue addition to the large barrel.

[0097] S24 reads the real-time temperature T1 value of the adhesive solution in the preheating zone 1 detected by the first temperature probe 10 during the full-power heating process of the first heater 5, and compares it with T1. S When comparing, if T1≥T1 S When K3 is reached, the first heater 5 switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃; if the condition is not met, the first heater 5 continues to maintain full-power heating mode.

[0098] S25 reads the real-time temperature T1 value of the adhesive in the preheating zone 1 detected by the first temperature probe 10 during the low-power heating process of the first heater 5, and compares it with T1. S When comparing, if T1≥T1 SWhen this happens, stop heating the first heater 5;

[0099] S26 inputs the safe glue height value H2 of glue supply area 2, reads the liquid level height value H in glue supply area 2 detected by the first liquid level probe 8, and compares it with H2. When H≤H2, the glue outlet switch assembly 12 is controlled to open the first glue outlet 31, so that the glue in the preheating area 1 flows into the glue supply area 2. The value of H2 is 50~80mm.

[0100] S27 When the first dispensing port 31 is opened, the dispensing height h of the preheating zone 1 detected by the second liquid level probe 9 is read. When h≤h1, the first dispensing port 31 is closed, the dispensing flow of the preheating zone 1 into the dispensing zone 2 is stopped, and the process proceeds to step S22.

[0101] S28 After the first dispensing nozzle 31 is opened, the second heater 19 is activated to heat the dispensing solution and the temperature value T2 of the dispensing solution in the dispensing zone 2 obtained by the second temperature probe 11 is read and compared with T2. S When comparing, if T2≥T2 S When the adhesive components in the adhesive supply area 2 meet the mixing conditions, the metering pump is started to supply adhesive to the laminating machine when the A and B components of the two-component adhesive meet the mixing conditions simultaneously. If the conditions are not met, the second heater 19 continues to heat.

[0102] During the glue supply process from glue supply zone 2 to the laminating machine, S29 reads the glue temperature value T2 obtained by the second temperature probe 11 in glue supply zone 2. When T2 ≥ T2 S When K4 is reached, the second heater 19 stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0103] 3. For example Figure 8 As shown, when using a small-quantity, rapid heating method for adding adhesive, the control process for the preheated adhesive storage tank is as follows:

[0104] S31 inputs the intended working temperature Tg of the adhesive solution, and according to T2 S =Tg+K1,T1S=T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone 1 and the adhesive supply zone 2 respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone 1 and the adhesive supply zone 2 respectively. K1 = 0~5℃ and K2 = 3~5℃ respectively.

[0105] S32 inputs the minimum safe glue height value h1 and the quantitative glue addition height h3 of the preheating zone 1, and reads the liquid level height value h in the preheating zone 1 detected by the second liquid level probe 9. When h≤h1, it confirms that the first glue outlet 31 is in the closed state, adds glue of weight Q to the preheating zone 1, and starts the first heater 5 for full power heating.

[0106] S33 reads the real-time temperature T1 of the adhesive in the preheating zone 1 detected by the first temperature probe 10 during the full-power heating process of the first heater 5. When T1 ≥ T1 S When K3 is -K3, the first heater 5 switches to low-power heating mode, where K3 is the heating buffer value, K3 = 2~5℃. If the condition is not met, the first heater 5 continues to maintain full-power heating mode.

[0107] S34 reads the real-time temperature T1 of the adhesive in the preheating zone 1 detected by the first temperature probe 10 during the low-power heating process of the first heater 5. When T1 ≥ T1 S When this occurs, the first heater 5 stops heating;

[0108] S35 inputs the safe glue height value H1 of glue supply area 2, reads the liquid level height value H in glue supply area 2 detected by the first liquid level probe 8, and when H≤H1, controls the glue outlet switch assembly 12 to open the first glue outlet 31, so that the glue in preheating area 1 flows into glue supply area 2. The value of H1 is 30~50mm.

[0109] S36 When the first dispensing port 31 is opened, the dispensing height h of the preheating zone 1 detected by the second liquid level probe 9 is read. When h≤h1, the first dispensing port 31 is closed, the dispensing flow of the preheating zone 1 into the dispensing zone 2 is stopped, and the process proceeds to step S32.

[0110] S37 When the first dispensing nozzle 31 is opened, the second heater 19 is started to heat and the temperature value T2 of the glue in the dispensing area 2 obtained by the second temperature probe 11 is read. When T2≥T2 S When the adhesive components in the adhesive supply area 2 meet the mixing conditions, the metering pump is started to supply adhesive to the laminating machine when the A and B components of the two-component adhesive meet the mixing conditions simultaneously. If the conditions are not met, the second heater 19 continues to heat.

[0111] During the glue supply process from glue supply zone 2 to the laminating machine, S38 reads the glue temperature value T2 obtained by the second temperature probe 11 in glue supply zone 2. When T2 ≥ T2 S When K4 is reached, the second heater 19 stops heating; otherwise, heating can continue. K4 is the safety factor for the adhesive temperature, and its value is 8-10℃.

[0112] 1) When using manual small bucket glue dispensing or automatic large bucket glue dispensing, the volume and height of preheating zone 1 must satisfy: V1max = h 1E *10 -6* *[0.785*(d1 2 -d3 2 )-S C (1)

[0113] (h 1E-h1)*10 -6* *[0.785*(d1 2 -d3 2 )-S C ≥1.1*20 / g

[0114] h 1E ≥2.2*10 7* / [0.785*(d1 2 -d3 2 )-S C ]+h1 (2)

[0115] In the above formula:

[0116] V1max is the maximum volume of preheating zone 1, in dm³. 3 ;

[0117] h 1E The height of preheated glue bucket 3, in mm;

[0118] d1 is the inner diameter of the preheated glue bucket 3, in mm; the value is 450 mm.

[0119] d3 is the outer diameter of the insulating ring 13, in mm; the value is 135 mm.

[0120] S C The area of ​​the clearance zone 33 of the preheating glue bucket 3, in mm. 2 The value is 3750mm. 2 ;

[0121] h1—Minimum liquid level height of preheated glue tank 3, value is 10~30mm;

[0122] g represents the density of the glue, in kg / dm³. 3 ; Value taken as 1 kg / dm 3

[0123] When h1 takes values ​​from 10 to 30, the calculation result in this example is h. 1E ≥162~192mm, take 180mm; when h 1E The value is 180mm, V1max = 25.4dm. 3

[0124] 2) When using manual small bucket dispensing or automatic large bucket dispensing, the volume of dispensing area 2 and the safety glue level must meet the following requirements:

[0125] 0.785*10 -3 *H1*d2 2 *g≥Δt*B*V*m*100 / (100+N)

[0126] 0.785*10-6 *(H max -H1)*d2 2 *g≥20

[0127] H1≥1.27*10 6 *B*V*m / [d2 2 *g*(100+N)] (3)

[0128] H max ≥2.55*10 7 / (d2 2 *g)+H1 (4)

[0129] In the above formula:

[0130] H1 is the minimum safe adhesive height value for adhesive supply area 2;

[0131] d2 is the inner diameter of the barrel, in mm; the value is 450 mm.

[0132] g represents the density of the glue, in kg / dm³. 3 ;

[0133] Δt represents the minimum glue supply time in the glue supply area when there is no glue replenishment in preheating zone 1; the value is 10 minutes.

[0134] B represents the adhesive application width, in meters (m); the value is 1.3m.

[0135] V represents the host speed, in m / m; value is 450.

[0136] m represents the amount of adhesive applied, in g / m. 2 Value 2g / m 2

[0137] N represents the percentage content of component A in the two-component adhesive; the value is 50%.

[0138] Based on the calculation result of equation (2), take the value H1. min =30mm

[0139] 3) The heating power value of the first heater 5 meets the following requirement: when the ambient temperature is 10 degrees, the heating time for filling the preheating zone 1 with a 20 kg bucket of adhesive and heating it to 35 degrees is no more than 20 minutes.

[0140] 4) The diameter d of the first flow nozzle 31 v When the dispensing nozzle is fully open, the time for 20 kg of preheated adhesive to flow from preheating zone 1 to dispensing zone 2 is less than 5 minutes;

[0141] 5) The heating power value of the second heater 19 meets the following condition: when a bucket of glue from the preheating zone 1 is added to the glue supply zone 2.

[0142] The heating time for 20 kg of adhesive liquid to reach the working temperature Tg is less than 5 minutes;

[0143] 6) When using the automatic glue dispensing method in large drums, h 1E V1max, H1 and H max The values ​​are obtained by formulas (1), (2), (3) and (4) respectively; h3 satisfies the following conditions and is calculated:

[0144] (h3-h1)*10 -6* *[0.785*(d1 2 -d3 2 )-S C ]=M / g (5)

[0145] H3 = M * 10 6* / [0.785*(d1 2 -d3 2 )-S C ]+h1 (6)

[0146] In the above formula: M is the amount of adhesive added each time, in kg.

Claims

1. A preheating glue storage tank control system for a glue mixer, characterized in that: A preheated adhesive storage tank includes a tank body and a lid on top of the tank body. The tank body contains a preheating zone and an adhesive supply zone below the preheating zone. The lid is equipped with a first liquid level probe, a second liquid level probe, an adhesive inlet, an adhesive outlet switch assembly, and a first temperature probe. The preheating zone contains a preheated adhesive tank. The preheated adhesive tank, tank body, and lid are connected by a flange. The bottom of the preheated adhesive tank has a first heater for heating the preheating zone. The bottom of the preheated adhesive tank has a first circular hole and a first adhesive outlet. An isolation ring is installed inside the first circular hole, with its lower part facing the adhesive supply zone and its upper part facing the first liquid level probe on the lid. The adhesive outlet switch assembly controls the opening and closing of the first adhesive outlet. The bottom of the tank body has a second heater for heating the adhesive supply zone. The bottom of the tank body has a second adhesive outlet communicating with the adhesive supply zone. The tank body has a second temperature probe inserted into the adhesive liquid in the supply zone. The temperature T is determined based on the working temperature T of the two-component adhesive liquid used. g Calculate the target heating temperature T1 of the adhesive in the preheating zone. S and the target heating temperature T2 in the glue supply area S The actual temperature T1 of the adhesive in the preheating zone is detected using the first temperature probe, and the actual liquid level H in the supply zone is detected using the first liquid level probe. When T1 ≥ T1 S When H ≤ the set safe glue height value H1 in the glue supply area, open the first flow port in the preheating zone to allow the preheated glue to flow into the glue supply area; use the second temperature probe to detect the actual glue temperature value T2 in the glue supply area, and when T2 ≥ T2 S When the component adhesive meets the conditions for being mixable, it enters the heating and heat preservation state. When both component A and component B meet the conditions for being mixable, their respective metering pumps are started, so that the adhesive liquid in the corresponding storage tank supply area flows through their respective second flow outlets to the mixing pipe and supplies adhesive to the laminating machine. When using manual small buckets to add glue, the control process for the preheated glue storage tank is as follows: S11 inputs the working temperature Tg of the adhesive to be used, and calculates the target temperature of the adhesive in the preheating zone and the supply zone according to T2S=Tg+K1 and T1S=T2S-K2 respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the supply zone respectively, and K1=0~5℃ and K2=3~5℃ respectively. S12 Input the minimum safe glue height value h1 in the preheating zone and read the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, confirm that the first glue outlet is closed. Add a small bucket of glue weighing 20 kg into the preheating zone through the manual glue inlet and start the first heater for full power heating. The value of h1 is 10~30 mm. S13 During the full-power heating process of the first heater, the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe is read and compared with T1S. When T1≥T1S-K3 is met, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3=2~5℃. When T1≥T1S-K3 is not met, the full-power heating mode of the first heater is maintained. S14 During the low-power heating process of the first heater, the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe is read and compared with T1S. When T1≥T1S, the heating of the first heater is stopped. S15 Input the safe glue level value H1 in the glue supply area, read the liquid level value H in the glue supply area detected by the first liquid level probe, and when H≤H1, control the glue outlet switch assembly to open the first glue outlet so that the glue in the preheating area flows into the glue supply area. The value of H1 is 30~50mm. S16 When the first dispensing nozzle is opened, the dispensing height h in the preheating zone is read by the second liquid level probe. When h ≤ h1, the first dispensing nozzle is closed, the dispensing in the preheating zone is stopped from flowing into the dispensing zone, and the process proceeds to step S12. S17 When the first flow port is opened, the second heater is started to heat and the temperature value T2 of the glue in the supply area is read by the second temperature probe. When T2≥T2S, the glue components in the supply area meet the condition for mixing. When the two-component A glue and B glue meet the condition for mixing, the metering pump is started to supply glue to the laminating machine. When the condition is not met, the second heater continues to heat. During the glue supply process from the glue supply area to the laminating machine, S18 reads the glue temperature value T2 obtained by the second temperature probe in the glue supply area. When T2 ≥ T2S + K4, the second heater stops heating; otherwise, heating continues. K4 is the glue temperature safety factor, with a value of 8 to 10℃.

2. The preheating storage tank control system for a glue mixer according to claim 1, characterized in that: When using an automatic glue dispensing system for large drums, the control process for the preheated glue storage tank is as follows: S21 Input the working temperature Tg of the adhesive to be used, and calculate the target temperature of the adhesive in the preheating zone and the supply zone according to T2S = Tg + K1 and T1S = T2S - K2 respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the supply zone respectively. K1 = 0 ~ 5℃ and K2 = 3 ~ 5℃ respectively. S22 Input the minimum safe glue height value h1 in the preheating zone, and read the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, confirm that the first glue outlet is closed, add glue to the preheating zone through the automatic glue filling port, and start the first heater for full power heating. The value of h1 is 10~30 mm. S23 Input the maximum safe glue height value h2 in the preheating zone and read the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≥h2, control the glue delivery pipe switch valve to close and stop the automatic glue addition to the large tank. S24 During the full-power heating process of the first heater, the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe is read and compared with T1S. When T1≥T1S-K3 is met, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3=2~5℃; if the condition is not met, the full-power heating mode of the first heater is maintained. S25 During the low-power heating process of the first heater, the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe is read and compared with T1S. When T1≥T1S, the heating of the first heater is stopped. S26 Input the safe glue level value H2 in the glue supply area, read the liquid level height value H in the glue supply area detected by the first liquid level probe, and compare it with H2. When H≤H2, control the glue outlet switch assembly to open the first glue outlet, so that the glue in the preheating area flows into the glue supply area. The value of H2 is 50~80mm. S27 When the first dispensing nozzle is opened, read the dispensing height h in the preheating zone detected by the second liquid level probe. When h≤h1, close the first dispensing nozzle, stop the dispensing from the preheating zone from flowing into the dispensing zone, and proceed to step S22. S28 When the first glue outlet is opened, the second heater is started to heat and the glue temperature value T2 in the glue supply area obtained by the second temperature probe is read and compared with T2S. When T2≥T2S, the glue components in the glue supply area meet the condition for mixing. When the two-component glue A and glue B meet the condition for mixing, the metering pump is started to supply glue to the laminating machine. When the condition is not met, the second heater continues to heat. S29 During the glue supply process to the laminating machine in the glue supply area, the glue temperature value T2 obtained by the second temperature probe in the glue supply area is read. When T2≥T2S+K4, the second heater is stopped; otherwise, heating continues. K4 is the glue temperature safety factor, and the value of K4 is 8~10℃.

3. The preheating storage tank control system for a glue mixer according to claim 1, characterized in that: When using a small-quantity, rapid heating method for adding adhesive, the control process for the preheated adhesive storage tank is as follows: S31 Input the intended working temperature Tg of the adhesive solution, and according to T2S=Tg+K1, T1S=T2 S -K2 is used to calculate the target temperature of the adhesive in the preheating zone and the adhesive supply zone respectively. In the above formula, K1 and K2 are the heating reserve values ​​of the preheating zone and the adhesive supply zone respectively. K1 is taken as 0~5℃ and K2 is taken as 3~5℃ respectively. S32 Input the minimum safe glue height value h1 and quantitative glue addition height h3 in the preheating zone, and read the liquid level height value h in the preheating zone detected by the second liquid level probe. When h≤h1, confirm that the first glue outlet is closed, add glue of weight Q to the preheating zone, and start the first heater for full power heating. S33 During the full-power heating process of the first heater, read the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe. When T1≥T1S-K3 is met, the first heater switches to low-power heating mode, where K3 is the heating buffer value, K3=2~5℃. If the condition is not met, the full-power heating mode of the first heater continues to be maintained. S34 During the low-power heating process of the first heater, the real-time temperature T1 value of the adhesive in the preheating zone detected by the first temperature probe is read. When T1≥T1S, the heating of the first heater is stopped. S35 Input the safe glue level value H1 in the glue supply area, read the liquid level value H in the glue supply area detected by the first liquid level probe, and when H≤H1, control the glue outlet switch assembly to open the first glue outlet so that the glue in the preheating area flows into the glue supply area. The value of H1 is 30~50mm. S36 When the first dispensing nozzle is opened, the dispensing height h in the preheating zone is read by the second liquid level probe. When h ≤ h1, the first dispensing nozzle is closed, the dispensing in the preheating zone is stopped from flowing into the dispensing zone, and the process proceeds to step S32. S37 When the first glue outlet is opened, the second heater is started to heat and the glue temperature value T2 in the glue supply area is read by the second temperature probe. When T2≥T2S, the glue components in the glue supply area meet the condition for mixing. When the two-component glue A and glue B meet the condition for mixing, the metering pump is started to supply glue to the laminating machine. When the condition is not met, the second heater continues to heat. During the glue supply process from the glue supply area to the laminating machine, S38 reads the glue temperature value T2 obtained by the second temperature probe in the glue supply area. When T2 ≥ T2S + K4, the second heater stops heating; otherwise, heating continues. K4 is the glue temperature safety factor, and the value of K4 is 8 to 10℃.

4. The preheating storage tank control system for a glue mixer according to claim 1, characterized in that: The barrel lid has a mounting base at its center. The first liquid level probe is mounted on the mounting base. The second liquid level probe, the manual glue filling port, the automatic glue filling port, the observation lens, the glue dispensing port switch assembly, and the first temperature probe are arranged around the mounting base.

5. The preheating storage tank control system for a glue mixer according to claim 1, characterized in that: An inner rotating wall is provided on one side of the preheating glue tank, and a clearance area is formed on the outer side of the inner rotating wall; the power adapter cable of the first heater is connected from the clearance area of ​​the preheating glue tank to the power socket of the glue supply area.

6. The preheating storage tank control system for a glue mixer according to claim 4, characterized in that: The glue dispensing port switch assembly includes a cylinder, a cylinder seat, a sliding sleeve, a sliding rod, a plastic ball, and a positioning ring. The positioning ring has a hollow toothed structure. The position of the first glue dispensing port is aligned vertically with the glue dispensing port switch assembly on the bucket lid. When the cylinder is opened, the plastic ball presses down to close the first glue dispensing port. The positioning ring slides up and down within the thin-walled circular ring inside the first glue dispensing port. The automatic glue dispensing port is connected to a glue delivery pipe, and an electrically controlled switch valve is provided on the glue delivery pipe.

7. The preheating storage tank control system for a glue mixer according to claim 1, characterized in that: An external frame is provided on the outer wall of the barrel. A wiring port corresponding to and communicating with the clearance area of ​​the preheating zone is provided on the external frame. A wiring port cover is provided on the external frame, and a power socket is provided on the wiring port cover.

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