A method and system for coil spray marking control

Abstract

The application provides a steel coil spray printing control method and system, the method comprising: reading a spray printing mode field to a data area according to rolling plan information, the spray printing mode field being determined according to a steel coil order contract number; generating hot spray printing machine setting information according to the spray printing mode field, and sending the hot spray printing machine setting information to a control unit of a steel coil transport area when a finishing F1 rack bites steel; associating the spray printing mode field corresponding to the steel coil with a coil transport trolley through the control unit, so as to track the position of the steel coil based on the spray printing mode field; when the steel coil is conveyed to a preset position, determining steel coil spray printing information according to the spray printing mode field to control a hot spray printing machine to complete steel coil information spray printing. The application can meet the demand of different spray printing information of the steel coil, reduce the consumption of steel coil hot spray paint auxiliary materials, reduce the fixed cost of per ton of steel, and reduce the failure rate of the mechanical arm of the hot spray printing machine.

Description

Technical Field

[0001] This invention relates to the field of steel production applications, and in particular to a method and system for controlling inkjet printing on steel coils. Background Technology

[0002] A thermal inkjet printer is installed in the transport area of ​​the hot-rolled coil production line in the steel rolling mill. It is used to print information on the steel coils (coil number, steel type, thickness, width, and specifications). Since the hot-rolled coil production line was built and put into operation, the information printing on the steel coils has been done on both the front and the side. The front prints the coil number, steel type, thickness, width, and specifications, while the side prints the coil number. The thermal inkjet printer consumes a lot of paint, and the printed information on some cold-rolled base material coils is not easy to wash off during pickling, which affects subsequent cold-rolled processing. At the same time, because each thermal inkjet printer has to rotate back and forth on both the front and the side, the mechanical arm of the thermal inkjet printer wears a lot and has a high failure rate. After the thermal inkjet printer fails, all steel coils need to go through the inspection line and the information needs to be reprinted manually. This is a labor-intensive and repetitive operation. Due to the high surface temperature of the steel coils, the operators are at great risk of burns. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention proposes a steel coil inkjet printing control method and system, which mainly solves the problems of high thermal paint consumption, high wear and tear of the mechanical arm of the thermal inkjet printer due to frequent operation, and failure to meet the different steel coil inkjet printing information needs of users.

[0004] To achieve the above and other objectives, the technical solution adopted by the present invention is as follows.

[0005] This application provides a method for controlling steel coil inkjet printing, comprising: reading an inkjet printing mode field into a data area according to rolling plan information, wherein the inkjet printing mode field is determined according to the steel coil order contract number corresponding to the rolling plan information; generating thermal inkjet printer setting information according to the inkjet printing mode field, and sending the thermal inkjet printer setting information to a control unit in the steel coil transportation area when the finishing mill F1 stand bites the steel; associating the inkjet printing mode field corresponding to the steel coil with the coil transport trolley through the control unit to track the position of the steel coil based on the inkjet printing mode field; and determining the steel coil inkjet printing information according to the inkjet printing mode field when the steel coil is transported to a preset position to control the thermal inkjet printer to complete the inkjet printing of the steel coil information.

[0006] In one embodiment of this application, the method for determining the printing mode field includes: obtaining the steel coil order contract number, and calling the corresponding contract text based on the steel coil order contract number; extracting field information from the contract text; and determining the printing mode field according to a preset target field that matches the field information, wherein there is a one-to-one correspondence between the preset target field and the printing mode field.

[0007] In one embodiment of this application, generating thermal inkjet printer setting information based on the printing mode field includes: determining the steel coil printing mode field based on the rolling plan information; generating a winding message based on the steel coil printing mode field; and assigning the printing mode field to a reserved field of the winding setting message to obtain the thermal inkjet printer setting information.

[0008] In one embodiment of this application, sending the thermal inkjet printer setting information to the control unit of the steel coil transport area when the finishing F1 stand bites the steel includes: providing a backup channel; and sending the thermal inkjet printer setting information to the control unit through the backup channel when the finishing F1 stand bites the steel.

[0009] In one embodiment of this application, position tracking of the steel coil based on the printing pattern field includes: when the coil receiving trolley receives the coil, the control unit sends the steel coil information containing the printing pattern field to the coil receiving trolley, so that the printing pattern field is associated with the coil receiving trolley; and reading the printing pattern field associated with each coil receiving trolley at different points in the transportation area to determine the position information of the steel coil corresponding to the printing pattern field.

[0010] In one embodiment of this application, determining the steel coil printing information based on the printing mode field to control the thermal inkjet printer to complete the steel coil information printing includes: if the printing mode corresponding to the printing mode field is full printing, then the steel coil printing information for the front and sides is sent to the thermal inkjet printer, causing the thermal inkjet printer to perform full printing; if the printing mode corresponding to the printing mode field is side printing only, then the front steel coil printing information is assigned a null value, and when the thermal inkjet printer receives the front steel coil printing information as null, it does not perform front steel coil information printing, causing the thermal inkjet printer to only perform side printing. If the printing mode corresponding to the printing mode field is surface printing only, then the side steel coil printing information is assigned a null value. When the thermal inkjet printer receives the side steel coil printing information as null, it does not perform the printing of the side information of the steel coil, so that the thermal inkjet printer only performs surface printing. If the printing mode corresponding to the printing mode field is surface printing and side printing, then some information in the front steel coil printing information is assigned a null value, so that the side steel coil printing information and the adjusted front steel coil printing information are sent to the thermal inkjet printer as steel coil printing information, so that the thermal inkjet printer performs partial surface printing and side printing.

[0011] In one embodiment of this application, after printing is completed, the method further includes: associating different printing modes with different identification information, so that after the steel coil information is printed, the identification information associated with the corresponding printing mode is displayed through the display interface.

[0012] This application also provides a printing control system, comprising: a pattern acquisition module, used to read the printing pattern field into a data area according to rolling plan information, wherein the printing pattern field is determined according to the steel coil order contract number corresponding to the rolling plan information; a coiling data association module, used to generate thermal inkjet printer setting information according to the printing pattern field, and send the thermal inkjet printer setting information to the control unit of the steel coil transportation area when the finishing F1 stand bites the steel; a position tracking module, used to associate the printing pattern field corresponding to the steel coil with the coil transport trolley through the control unit, so as to track the position of the steel coil based on the printing pattern field; and a printing control module, used to determine the steel coil printing information according to the printing pattern field when the steel coil is conveyed to a preset position, so as to control the thermal inkjet printer to complete the printing of the steel coil information.

[0013] As described above, the steel coil inkjet printing control method and system proposed in this application have the following beneficial effects.

[0014] This application automatically determines the printing information requirements of steel coils based on the steel coil order contract number, and controls the thermal inkjet printer to complete different printing information of steel coils by issuing printing modes through the rolling plan, so as to meet the customer's different printing information requirements, which greatly reduces the consumption of thermal inkjet paint auxiliary materials for steel coils, effectively reduces the fixed cost per ton of steel and the failure rate of the thermal inkjet printer's robotic arm. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating a steel coil inkjet printing control method in one embodiment of this application.

[0016] Figure 2 This is a block diagram of a steel coil inkjet printing control system according to one embodiment of this application. Detailed Implementation

[0017] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] The inventor discovered through research that:

[0020] The existing method of printing information on steel coils has the following problems:

[0021] 1. Information on the front and side of the steel coil is printed together. The thermal spraying of the steel coil consumes a lot of paint, and the printed information in the cold rolling process is not easy to wash off by pickling, which affects the customer's processing and use.

[0022] 2. Existing control technology for thermal inkjet printers results in significant wear on the robotic arm, long continuous working time, and a high failure rate.

[0023] 3. After a thermal inkjet printer malfunctions, manual reprinting is required, which is physically demanding for operators and carries a significant risk of burns.

[0024] 4. Some customers do not require printing on the front of their steel coils, but the coils are still printed with both front and side information, which increases the cost of auxiliary materials per ton of steel.

[0025] Based on the problems existing in the prior art, this application proposes a printing control method and system. The technical solution of this application will be described in detail below with reference to specific embodiments.

[0026] Please see Figure 1 , Figure 1 This is a flowchart illustrating a steel coil inkjet printing control method according to an embodiment of this application. The inkjet printing control method provided by this application includes the following steps:

[0027] Step S100: Read the printing mode field into the data area according to the rolling plan information. The printing mode field is determined according to the steel coil order contract number corresponding to the rolling plan information.

[0028] Specifically, before steel coil production, a rolling plan can be prepared in advance based on user orders or actual production needs, and the rolling plan information can be recorded. A correspondence between the rolling plan information and the steel coil order contract can be established in the background database. Specifically, a correspondence can be established between the rolling plan information and the steel coil order contract number. For example, the rolling plan information can be associated with the steel coil order contract number, and the rolling plan information includes the batch of steel coils to be produced and the corresponding contract number. When processing the corresponding rolling plan, the corresponding contract number can be read to retrieve the corresponding contract text from the database.

[0029] In one embodiment, the method for determining the printing mode field includes: obtaining the steel coil order contract number, and calling the corresponding contract text based on the steel coil order contract number; extracting field information from the contract text; and determining the printing mode field according to a preset target field that matches the field information, wherein there is a one-to-one correspondence between the preset target field and the printing mode field.

[0030] Specifically, multiple preset target fields can be stored, establishing a correspondence between each preset target field and the printing mode field. For example, the preset target fields may include: full printing, side printing only, surface printing only, side printing, and surface printing (surface printing omits steel type, specifications, and other printing information). The printing mode field CI_PRINTMODE has a value of 1-4. The correspondence between the preset target fields and the printing mode field can be represented as: 1-full printing, 2-side printing only, 3-surface printing only, 4-side printing + surface printing (surface printing omits steel type, thickness, width, and specification printing information). For example, the printing mode field CI_PRINTMODE can be added to the CI_RPPDI data table in the secondary database of the rolling mill. To accurately match the printing mode required by the customer, the contract text can be retrieved based on the steel coil order contract number, and the text can be segmented to obtain the corresponding field information, such as full printing, side printing only, etc. Based on the obtained field information, a similarity comparison is performed with the preset target field. If a match is found for full inkjet printing, the inkjet mode field is assigned a value of 1. If a match is found for side inkjet printing only, the inkjet mode field is assigned a value of 2, and so on, to obtain the corresponding inkjet mode field.

[0031] Step S110: Generate thermal inkjet printer setting information according to the inkjet printing mode field, and send the thermal inkjet printer setting information to the control unit of the steel coil transport area when the F1 stand of the finishing mill bites the steel.

[0032] In one embodiment, generating thermal inkjet printer setting information based on the printing mode field includes: determining the steel coil printing mode based on the rolling plan information; generating a coil setting message based on the steel coil printing mode; and assigning the printing mode field to a reserved field of the coil setting message to obtain the thermal inkjet printer setting information.

[0033] In one embodiment, the steel coil information, including steel type, coil number, and specifications, can be determined based on the rolling schedule corresponding to the rolling schedule information. The steel coil information is packaged to generate a coiling setting message. Upon receiving the coiling setting message, the control unit of the rolling line can control the thermal inkjet printer to print the steel coil information according to the coil information. To facilitate the control unit's accurate tracking of customer needs, a reserved byte can be included in the message to identify the printing mode corresponding to the current steel coil. For example, the reserved item F4Reserve5 in the coiling setting message is defined as the printing mode. After obtaining the printing mode field based on the aforementioned steps, the value of the printing mode field can be assigned to this reserved item, thereby obtaining the thermal inkjet printer setting information.

[0034] In one embodiment, sending the thermal inkjet printer setting information to the control unit of the steel coil transport area when the finishing F1 stand bites the steel includes: providing a backup channel; and sending the thermal inkjet printer setting information to the control unit through the backup channel when the finishing F1 stand bites the steel.

[0035] Specifically, when the steel is being gripped on the F1 stand of the finishing mill, the thermal inkjet printer's setting information can be sent to the rolling line's control unit. The control unit can parse the thermal inkjet printer's setting information to obtain the printing mode field, and then forward the printing mode field to the control unit in the coil transport area through a backup channel. The control unit in the coil transport area can be a PLC controller, or other controllers can be selected as needed; there are no restrictions here. The control unit then sends the printing mode to the thermal inkjet printer to execute the corresponding coil printing action.

[0036] Step S120: The control unit associates the printing mode field corresponding to the steel coil with the coil transport trolley to track the position of the steel coil based on the printing mode field.

[0037] In one embodiment, tracking the position of the steel coil based on the printing pattern field includes: when the coil receiving trolley receives the coil, the control unit sends the steel coil information containing the printing pattern field to the coil receiving trolley, so that the printing pattern field is associated with the coil receiving trolley; and reading the printing pattern field associated with each coil receiving trolley at different points in the transportation area to determine the position information of the steel coil corresponding to the printing pattern field.

[0038] Specifically, the rolling line may include multiple coil transport trolleys. The control unit of the rolling line can collect the identification information of the coil transport trolleys and then associate the printing mode field with the identification information of the coil transport trolleys. When the coil transport trolleys transport the steel coils to different locations, the associated printing mode field can be obtained by reading the identification information of the coil transport trolleys, thereby tracking the position of the steel coils and causing the printing mode field to migrate with the tracking position of the steel coils. For example, the control unit can send 60 bytes of steel coil information, including the printing mode, to the coil transport trolleys, and the printing mode field will automatically track the steel coils in the steel coil transport area along with the steel coil information.

[0039] Step S130: When the steel coil is conveyed to the preset position, the steel coil printing information is determined according to the printing mode field to control the thermal inkjet printer to complete the printing of the steel coil information.

[0040] In one embodiment, determining the steel coil printing information based on the printing mode field to control the thermal inkjet printer to complete the steel coil information printing includes: if the printing mode corresponding to the printing mode field is full printing, then the steel coil printing information of the front and side surfaces is sent to the thermal inkjet printer as steel coil printing information, causing the thermal inkjet printer to perform full printing; if the printing mode corresponding to the printing mode field is side-only printing, then the front steel coil printing information is assigned a null value, and when the thermal inkjet printer receives the front steel coil printing information as null, it does not perform front steel coil information printing, causing the thermal inkjet printer to only print the steel coil information. Perform side printing; if the printing mode corresponding to the printing mode field is front printing only, then assign a null value to the side steel coil printing information. When the thermal inkjet printer receives a null value for the side steel coil printing information, it does not perform side printing of the steel coil information, so that the thermal inkjet printer only performs front printing; if the printing mode corresponding to the printing mode field is both front and side printing, assign a null value to some information in the front steel coil printing information, so that the side steel coil printing information and the adjusted front steel coil printing information are sent to the thermal inkjet printer as steel coil printing information, so that the thermal inkjet printer performs partial front and side printing.

[0041] Specifically, the information of the steel coils on the transport trolley (including the printing mode) is automatically tracked as the coils move. When the information reaches the sixth coil position on the second walking beam, the printing mode is determined. If the printing mode is "1", it is full printing, and the information is sent to the thermal inkjet printer for automatic printing of the front and side information of the steel coils. If the printing mode is "2", it is side printing only, and the information sent to the thermal inkjet printer is processed to add blank characters to the front printing of the coil number, specifications, and steel type. When the printing mode is "3", only the side information of the steel coil is printed; when the printing mode is "4", only the steel type, thickness and width specifications in the front information are printed, and the steel type, thickness and width specifications in the front information are printed. When the printing mode is "4", only the steel type, thickness and width specifications in the front information are printed, and the steel coil number is printed.

[0042] In one embodiment, after printing is completed, the method further includes: associating different printing modes with different identification information, so that after the steel coil information is printed, the identification information associated with the corresponding printing mode is displayed through the display interface.

[0043] Specifically, color can be used as identification information. After coiling and uncoiling are completed, a printing mode field can be added to the steel coil tracking information and highlighted on the HMI screen. When the printing mode is 2, the finished product library in the steel coil information is displayed in blue to remind the operator that the steel coil is only side-printed; when the printing mode is 3, the finished product library in the steel coil information is displayed in yellow to remind the operator that the steel coil is only front-printed; when the printing mode is 4, the finished product library in the steel coil information is displayed in red to remind the operator that the steel type, thickness and width specifications are canceled during front-printing, and only the steel coil number is printed on the front and sides.

[0044] Based on the above technical solution of this application, a printing mode can be automatically generated according to the steel coil order contract number. The printing mode controls the thermal inkjet printer to perform different steel coil information printing actions to meet the printing information needs of different steel coils. This significantly reduces the consumption of thermal spray paint on steel coils in the hot coil production line of the steel rolling mill, and reduces the fixed cost of auxiliary materials per ton of steel. It also significantly reduces the failure rate of the thermal inkjet printer's robotic arm, improves the operational stability of the thermal inkjet printer, and thus enhances the production stability of the production line. Furthermore, it reduces the number of steel coils that need to be reprinted after the thermal inkjet printer malfunctions, reduces the labor intensity of operators, and avoids the risk of operators being burned by high-temperature steel coils.

[0045] Please see Figure 2 This embodiment provides a steel coil inkjet printing control system for executing the steel coil inkjet printing control method described in the foregoing method embodiments. Since the technical principles of the system embodiment are similar to those of the foregoing method embodiments, the same technical details will not be repeated.

[0046] In one embodiment, a steel coil inkjet printing control system includes: a pattern acquisition module 20, used to read an inkjet printing pattern field into a data area according to rolling plan information, wherein the inkjet printing pattern field is determined according to the steel coil order contract number corresponding to the rolling plan information; a coiling data association module 21, used to generate thermal inkjet printer setting information according to the inkjet printing pattern field, and send the thermal inkjet printer setting information to the control unit of the steel coil transportation area when the finishing F1 stand bites the steel; a position tracking module 22, used to associate the inkjet printing pattern field corresponding to the steel coil with the coil transport trolley through the control unit, so as to track the position of the steel coil based on the inkjet printing pattern field; and an inkjet printing control module 23, used to determine the steel coil inkjet printing information according to the inkjet printing pattern field when the steel coil is conveyed to a preset position, so as to control the thermal inkjet printer to complete the inkjet printing of the steel coil information.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A steel coil spray marking control method, characterized by, include: The printing mode field is read into the data area according to the rolling plan information, and the printing mode field is determined according to the steel coil order contract number corresponding to the rolling plan information. The thermal inkjet printer setting information is generated based on the inkjet printing mode field, and the thermal inkjet printer setting information is sent to the control unit of the steel coil transport area when the F1 stand of the finishing mill bites the steel. Generating thermal inkjet printer setting information based on the printing mode field includes: determining coil printing information based on the rolling plan information; generating a coil setting message based on the coil printing information; assigning the printing mode field to a reserved field of the coil setting message to obtain the thermal inkjet printer setting information; determining the coil printing information based on the printing mode field to control the thermal inkjet printer to complete the printing of the coil information includes: if the printing mode corresponding to the printing mode field is full printing, then the front and side coil printing information is sent to the thermal inkjet printer, causing the thermal inkjet printer to perform full printing; if the printing mode corresponding to the printing mode field is side printing only, then the front coil printing information is left blank. If the thermal inkjet printer receives a null value for the front coil printing information, it will not print the front information of the coil, and will only perform side printing. If the printing mode corresponding to the printing mode field is front printing only, then the side coil printing information will be assigned a null value, and the thermal inkjet printer will not print the side information of the coil, and will only perform front printing. If the printing mode corresponding to the printing mode field is front printing and side printing, then some information in the front coil printing information will be assigned a null value, so that the side coil printing information and the adjusted front coil printing information are sent to the thermal inkjet printer as coil printing information, and the thermal inkjet printer will perform partial front printing and side printing. The control unit associates the printing mode field corresponding to the steel coil with the coil transport trolley to track the position of the steel coil based on the printing mode field. When the steel coil is conveyed to the preset position, the steel coil printing information is determined according to the printing mode field to control the thermal inkjet printer to complete the printing of the steel coil information.

2. The steel coil inkjet printing control method according to claim 1, characterized in that, The method for determining the printing mode field includes: Obtain the steel coil order contract number, and retrieve the corresponding contract text based on the steel coil order contract number; Extract field information from the contract text; The printing mode field is determined based on a preset target field that matches the field information, wherein there is a one-to-one correspondence between the preset target field and the printing mode field.

3. The steel coil inkjet printing control method according to claim 1, characterized in that, When the steel is bitten on the F1 stand of the finishing mill, the thermal inkjet printer settings are sent to the control unit in the steel coil transport area, including: Provide a backup channel; When the F1 stand of the finishing mill bites the steel, the setting information of the thermal inkjet printer is sent to the control unit of the steel coil transport area through the backup channel.

4. The steel coil spray marking control method of claim 1, wherein Position tracking of the steel coil based on the printing mode field includes: When the coil transport trolley receives the coil, the control unit sends the coil information, which includes the printing mode field, to the coil transport trolley, so that the printing mode field is associated with the coil transport trolley. The printing mode field associated with each coil transport trolley is read at different points in the transport area to determine the location information of the steel coil corresponding to the printing mode field.

5. The steel coil spray marking control method of claim 1, wherein After printing is completed, the following is also included: Different printing modes are associated with different identification information so that the identification information associated with the corresponding printing mode can be displayed on the display interface after the steel coil information is printed.

6. A steel coil inkjet printing control system, characterized in that, include: The pattern acquisition module is used to read the printing pattern field into the data area according to the rolling plan information. The printing pattern field is determined according to the steel coil order contract number corresponding to the rolling plan information. Data association module; Used to generate thermal inkjet printer setting information based on the inkjet printing mode field, and send the thermal inkjet printer setting information to the control unit of the steel coil transport area when the F1 stand of the finishing mill bites the steel. The position tracking module is used to associate the printing mode field corresponding to the steel coil with the coil transport trolley through the control unit, so as to perform position tracking of the steel coil based on the printing mode field. Generating thermal inkjet printer setting information based on the printing mode field includes: determining coil printing information based on the rolling plan information; generating a coil setting message based on the coil printing information; assigning the printing mode field to a reserved field of the coil setting message to obtain the thermal inkjet printer setting information; determining the coil printing information based on the printing mode field to control the thermal inkjet printer to complete the printing of the coil information includes: if the printing mode corresponding to the printing mode field is full printing, then the front and side coil printing information is sent to the thermal inkjet printer, causing the thermal inkjet printer to perform full printing; if the printing mode corresponding to the printing mode field is side printing only, then the front coil printing information is left blank. If the thermal inkjet printer receives a null value for the front coil printing information, it will not print the front information of the coil, and will only perform side printing. If the printing mode corresponding to the printing mode field is front printing only, then the side coil printing information will be assigned a null value, and the thermal inkjet printer will not print the side information of the coil, and will only perform front printing. If the printing mode corresponding to the printing mode field is front printing and side printing, then some information in the front coil printing information will be assigned a null value, so that the side coil printing information and the adjusted front coil printing information are sent to the thermal inkjet printer as coil printing information, and the thermal inkjet printer will perform partial front printing and side printing. The printing control module is used to determine the steel coil printing information according to the printing mode field when the steel coil is conveyed to the preset position, so as to control the thermal inkjet printer to complete the printing of the steel coil information.

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