Roll changing method and device for preventing blocking of rolling mill, electronic device and storage medium

Abstract

This invention belongs to the field of rolling mill technology and provides a method, device, electronic equipment, and storage medium for anti-jamming roll changing in rolling mills. The method includes: after the rolling mill stops, unlocking the locking cylinder to unlock the frame, moving the frame to the initial position, installing positioning plates on the inlet and outlet sides of the bracket and the rolling mill base, and inserting positioning pins for positioning, pulling out the pin cylinder to separate the bracket and the rolling mill base, pushing the roll to the roll changing position, performing the roll changing operation, adjusting the position of the roll flat head, inserting the pin cylinder, pulling out the positioning pin, resetting the frame, and locking the locking cylinder to lock the frame, thus completing the roll changing. This invention solves the problem in the prior art where, during roll changing, the friction between the universal joint flat head sleeve on the bracket body and the roll flat head cannot be overcome, making disengagement difficult and easily causing jamming, leading to roll changing timeout and affecting normal production. This invention avoids jamming and roll changing timeout, ensures normal roll changing, achieves rapid roll changing, and improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of rolling mill technology, and in particular to a rolling mill anti-jamming roll changing method, device, electronic equipment and storage medium. Background Technology

[0002] With the development of the steel industry and the increasing demands of users for steel quality, rolling mills are placing higher and higher requirements on rolling mills. Short stress line rolling mills are characterized by high rigidity, high product precision, light equipment weight, and simple operation. In particular, their "online quick mill changeover" feature has made them the dominant type of rolling mill in domestic bar and wire rod mills.

[0003] In the existing technology, short stress line rolling mills can be roughly divided into two types: stand type and frame type. Chongqing Iron and Steel uses the Danieli horizontal rolling mill. The bracket body of the Danieli horizontal rolling mill is designed to slide freely without any positioning device. When changing rolls, the universal joint flat head sleeve on the bracket body cannot be disengaged from the flat head of the roll due to friction, which easily causes jamming and roll changing timeout. Since the wire rod production line was put into production, it has frequently experienced faults such as no roll changing action and the flat head of the roll being unable to disengage, which greatly affects subsequent production. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a method, device, electronic device and storage medium for anti-jamming roll changing in rolling mills, which solves the problem in the prior art that when changing rolls, the friction between the universal joint flat head sleeve on the bracket body and the flat head of the roll cannot be overcome, making it difficult to disengage and easily causing jamming, resulting in roll changing timeout and affecting normal production.

[0005] To achieve the above and other related objectives, the present invention provides a method for preventing jamming and changing rolls in a rolling mill, comprising:

[0006] After the mill is stopped, the locking cylinder is unlocked to unlock the stand and move the stand to its initial position.

[0007] Positioning plates are installed on the inlet and outlet sides of the bracket and the mill base, and positioning pins are inserted for positioning.

[0008] Pull out the pin cylinder to separate the roll and the bracket;

[0009] Push the roll to the roll changing position and perform the roll changing operation;

[0010] The position of the flat end of the roll is aligned and adjusted, the pin cylinder is inserted, the positioning pin is pulled out, the frame is reset and the locking cylinder is tightened to lock the frame.

[0011] Optionally, after the mill has moved to its initial position, the water pipe connecting the rolls can be removed.

[0012] Optionally, when the roll is pushed out to the roll changing position for roll changing, the connecting pin between the roll changing cylinder and the mill is pulled out, and the stand is pushed in at the same time to completely disengage the roll from the stand.

[0013] Optionally, after the roll is completely detached from the frame, the roll is lifted off the ground, and a new roll is hoisted to replace it. The hoisting position of the new roll is adjusted to ensure that it is hoisted to the limit position of the cylinder extension.

[0014] Optionally, after the new roll is hoisted, pull back the frame to reset the roll changing cylinder and the mill, insert the connecting pin, and ensure that the roll changing cylinder is properly connected to the roll.

[0015] Optionally, after the roll change is completed, push the roll into the frame so that the gap between the roll flat head and the universal joint flat head sleeve is 150-250mm, adjust the position of the roll flat head, apply dry oil evenly to the flat head part, and continue to push it into the frame until it is assembled in place.

[0016] Optionally, the frame can be reset by pulling back the frame, adjusting the alignment of the rolling groove with the rolling center line, restoring the water pipes connecting various parts, and then resetting the frame.

[0017] Based on the same inventive concept, the present invention also provides an anti-jamming roller changing device, the device comprising:

[0018] The unlocking module is used to unlock the locking cylinder after the mill stops to unlock the stand and move the stand to the initial position;

[0019] The positioning module is used to install positioning plates on the inlet and outlet sides of the bracket and the mill base, and to insert positioning pins for positioning.

[0020] The separation module is used to pull out the pin cylinder and separate the roll and the bracket;

[0021] The roll changing module is used to push the rolls to the roll changing position to perform the roll changing operation.

[0022] The adjustment module is used to center and adjust the position of the roll flat head. Insert the pin cylinder, pull out the positioning pin, reset the frame, and lock the locking cylinder to lock the frame.

[0023] Based on the same inventive concept, the present invention also provides an electronic device, the electronic device comprising:

[0024] One or more processors;

[0025] A storage device for storing one or more programs, which, when executed by one or more processors, enable the electronic device to implement a rolling mill anti-jamming roll changing method as described above.

[0026] Based on the same inventive concept, the present invention also provides a storage medium storing a computer program, which, when executed by a computer processor, causes the computer to perform a rolling mill anti-jamming roll changing method as described above.

[0027] As described above, the rolling mill anti-jamming roll changing method, apparatus, electronic equipment, and storage medium of the present invention have at least the following beneficial effects:

[0028] After the mill stops, the locking cylinder is unlocked to unlock the frame, which is then moved to its initial position. Positioning plates are installed on the inlet and outlet sides of the support and mill base, and positioning pins are inserted for positioning. The pin cylinder is pulled out, separating the roll and support. The roll is pushed out to the roll changing position for roll changing. The roll flat head position is aligned and adjusted. The pin cylinder is inserted, the positioning pin is pulled out, the frame is reset, and the locking cylinder is tightened to lock the frame, completing the roll changing. By installing positioning plates on the inlet and outlet sides of the support and mill base and inserting positioning pins for positioning, the stability of the mill support is increased, preventing the support from shifting. This overcomes the friction between the universal joint flat head sleeve on the support body and the roll flat head during roll changing, avoiding jamming and roll changing timeouts, ensuring normal roll changing, achieving rapid roll changing, and improving production efficiency.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0031] Figure 1 This is a flowchart illustrating an exemplary embodiment of a rolling mill roll changing method to prevent jamming;

[0032] Figure 2 This is a block diagram illustrating an anti-jamming roller changing device according to an exemplary embodiment of this application;

[0033] Figure 3 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0034] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. 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 understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0035] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0036] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0037] In one exemplary embodiment, this application provides an exemplary method for preventing jamming during roll changing in a rolling mill. Please refer to [link to relevant documentation]. Figure 1 , Figure 1 This is a flowchart illustrating an exemplary embodiment of a rolling mill anti-jamming roll changing method, the method including at least steps S110 to S150, detailed below:

[0038] Step S110: After the mill stops, unlock the locking cylinder to unlock the stand and move the stand to the initial position;

[0039] Step S120: Install positioning plates on the inlet and outlet sides of the bracket and the mill base, and insert positioning pins for positioning;

[0040] Step S130: Pull out the pin cylinder to separate the roll and the bracket;

[0041] Step S140: Push the roll to the roll changing position and perform the roll changing operation;

[0042] Step S150: Align the position of the roll flat head, insert the pin cylinder, pull out the positioning pin, reset the frame, and lock the frame with the locking cylinder.

[0043] Steps S110 to S150 are described in detail below:

[0044] In step S110, after the mill stops, the locking cylinder is unlocked to unlock the stand and move the stand to the initial position.

[0045] Specifically, after the mill is stopped, safe operation is performed on the mill. Local operation is enabled on the mill control panel and a self-management sign is hung on the mill to ensure that the roll change is carried out under safe conditions. After the mill is pushed into the initial position, the water pipe connecting the rolls is removed.

[0046] In step S120, positioning plates are installed on the inlet and outlet sides of the bracket and the mill base, and positioning pins are inserted for positioning.

[0047] It should be noted that the existing rolling mill bracket body is a free-sliding design without any positioning device, relying solely on its own weight to connect with the rolling mill base. Due to gravity, the friction between the universal joint flat head sleeve on the bracket body and the flat head of the roll increases during roll changing, causing jamming as the universal joint flat head sleeve cannot disengage from the flat head of the roll. In this embodiment, after the frame is pushed into place, the position of the bracket is confirmed. Positioning plates are installed at the same positions on the inlet and outlet sides of the bracket and the rolling mill base, respectively, at the upper and lower locations. The positioning plates are welded to the bracket and the rolling mill base, respectively. After the positioning plates at the upper and lower locations are installed and fixed, positioning holes are opened at the corresponding positions on the positioning plates, and positioning pins are inserted for positioning. This increases the stability of the bracket during roll changing, preventing the bracket from shifting. It overcomes the friction between the universal joint flat head sleeve on the bracket body and the flat head of the roll during roll changing, allowing them to quickly disengage and achieve rapid roll changing. This avoids jamming and roll changing timeouts, ensuring normal roll changing and improving production efficiency.

[0048] In step S130, the pin cylinder is pulled out to separate the roll and the bracket. The separation of the roll and the bracket can only be carried out after confirming that the pin cylinder is fully opened.

[0049] In step S140, the roll is pushed out to the roll changing position to perform the roll changing operation.

[0050] Specifically, when the roll is pushed out to the roll changing position for roll changing, the connecting pin between the roll changing cylinder and the mill is pulled out, and the mill stand is pushed in at the same time to make the roll completely disengage from the mill stand. After the roll is completely disengaged from the mill stand, the roll is lifted out and a new roll is hoisted for replacement. The hoisting position of the new roll is adjusted to ensure that it is hoisted to the limit position of the cylinder extension. After the new roll is hoisted, the mill stand is pulled back to reset the roll changing cylinder and the mill. The connecting pin is then inserted to ensure that the roll changing cylinder and the roll are properly connected.

[0051] In step S150, the position of the roll flat head is aligned and adjusted, the pin cylinder is inserted, the positioning pin is pulled out, the frame is reset and the locking cylinder is tightened to lock the frame.

[0052] Specifically, after the roll change is completed, push the roll into the frame so that the gap between the roll flat head and the universal joint flat head sleeve is 150-250mm. Adjust the position of the roll flat head and apply dry oil evenly to the flat head area. Continue to push the roll into the frame until it is in place. Pull the frame back to adjust the alignment of the rolling groove with the rolling center line, restore the water pipes connecting all parts, reset the frame, adjust the roll gap after the roll change is completed, and finally release the safety operation, remove the tag and resume production.

[0053] As can be seen, the technical solution provided in this embodiment is to position the mill support to prevent it from deviating during roll changing. After the mill stops, the locking cylinder is unlocked to unlock the frame, and the frame is moved to the initial position. Positioning plates are installed on the inlet and outlet sides of the support and the mill base, and positioning pins are inserted for positioning. The pin cylinder is pulled out, the roll and the support are separated, the roll is pushed out to the roll changing position, and the roll changing operation is performed. The position of the roll flat head is adjusted for centering, the pin cylinder is inserted, the positioning pin is pulled out, the frame is reset, and the locking cylinder is locked to lock the frame, completing the roll changing. By installing positioning plates on the inlet and outlet sides of the support and the mill base and inserting positioning pins for positioning, the stability of the mill support is increased, the friction between the universal joint flat head sleeve on the support body and the roll flat head is overcome during the roll changing process, and jamming and roll changing timeout are avoided, ensuring normal roll changing and achieving rapid roll changing, thus improving production efficiency.

[0054] Figure 2 This is a block diagram illustrating an anti-jamming roller changing device according to an exemplary embodiment of this application. The device can be applied to... Figure 1 The implementation environment shown is not limited to this embodiment. This device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applicable.

[0055] like Figure 2 As shown, this exemplary anti-jamming roller changing device includes: an unlocking module 201, a positioning module 202, a separation module 203, a roller changing module 204, and an adjustment module 205. Detailed descriptions of each component are as follows:

[0056] The unlocking module 201 is configured to unlock the locking cylinder after the mill stops to unlock the stand and move the stand to the initial position;

[0057] Positioning module 202 is configured to install positioning plates on the inlet and outlet sides of the bracket and the mill base, and insert positioning pins for positioning;

[0058] Separation module 203 is configured to pull out the pin cylinder to separate the roll and the bracket;

[0059] Roll changing module 204 is configured to push the roll to the roll changing position to perform a roll changing operation;

[0060] Adjustment module 205 is configured to center and adjust the position of the roll flat head, insert the pin cylinder, pull out the positioning pin, reset the frame and lock the locking cylinder to lock the frame.

[0061] In the anti-jamming roll changing device provided in this application, after the mill stops, the locking cylinder is unlocked to unlock the frame, the frame is moved to the initial position, positioning plates are installed on the inlet and outlet sides of the bracket and the mill base, and positioning pins are inserted for positioning. The pin cylinder is pulled out, the roll and the bracket are separated, the roll is pushed out to the roll changing position, and the roll changing operation is performed. The position of the roll flat head is aligned and adjusted, the pin cylinder is inserted, the positioning pin is pulled out, the frame is reset, and the locking cylinder is locked to lock the frame, completing the roll changing. By installing positioning plates on the inlet and outlet sides of the bracket and the mill base and inserting positioning pins for positioning, the stability of the mill bracket is increased, the friction between the universal joint flat head sleeve on the bracket body and the roll flat head is overcome during the roll changing process, jamming and roll changing timeout are avoided, roll changing is ensured to proceed normally, rapid roll changing is achieved, and production efficiency is improved.

[0062] It should be noted that the anti-jamming roll changing device provided in the above embodiments and the anti-jamming roll changing method for rolling mills provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the anti-jamming roll changing device provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0063] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the rolling mill anti-jamming roll changing method provided in the above embodiments.

[0064] Figure 3A schematic diagram of a computer system suitable for implementing the embodiments of this application is shown. It should be noted that... Figure 3 The computer system 300 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0065] like Figure 3 As shown, the computer system 300 includes a Central Processing Unit (CPU) 301, which can perform various appropriate actions and processes based on programs stored in Read-Only Memory (ROM) 302 or programs loaded from storage portion 308 into Random Access Memory (RAM) 303, such as performing the methods described in the above embodiments. The RAM 303 also stores various programs and data required for system operation. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An Input / Output (I / O) interface 305 is also connected to the bus 304.

[0066] The following components are connected to I / O interface 305: an input section 306 including a keyboard, mouse, etc.; an output section 307 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to I / O interface 305 as needed. Removable media 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 310 as needed so that computer programs read from them can be installed into storage section 308 as needed.

[0067] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 309, and / or installed from removable medium 311. When the computer program is executed by central processing unit (CPU) 301, it performs various functions defined in the system of this application.

[0068] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0069] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0070] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0071] Another aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a computer's processor, causes the computer to perform the automatic pre-embedding of roll gaps in a rolling mill as described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not incorporated into the electronic device.

[0072] Another aspect of this application provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the rolling mill anti-jamming roll changing method provided in the various embodiments described above.

[0073] 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 method for preventing jamming during roll changing in a rolling mill, characterized in that, include: After the mill is stopped, the locking cylinder is unlocked to unlock the stand and move the stand to its initial position. Positioning plates are installed on the inlet and outlet sides of the bracket and the mill base, and positioning pins are inserted for positioning. Pull out the pin cylinder to separate the roll and the bracket; Push the roll to the roll changing position and perform the roll changing operation; The position of the flat end of the roll is aligned and adjusted, the pin cylinder is inserted, the positioning pin is pulled out, the frame is reset and the locking cylinder is tightened to lock the frame.

2. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: After the mill is moved to its initial position, the water pipe connecting the rolls is removed.

3. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: When the roll is pushed out to the roll changing position and the roll is changed, the connecting pin between the roll changing cylinder and the mill is pulled out, and at the same time the stand is pushed in so that the roll is completely separated from the stand.

4. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: After the rolls are completely detached from the frame, the rolls are lifted out and replaced with new rolls. The lifting position of the new rolls is adjusted to ensure that they are lifted to the limit position of the hydraulic cylinder extension.

5. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: After the new roll is hoisted, pull back the frame to reset the roll changing cylinder and the mill, insert the connecting pin, and ensure that the roll changing cylinder and the roll are properly connected.

6. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: After the roll change is completed, push it into the frame so that the gap between the roll flat head and the universal joint flat head sleeve is 150-250mm. Adjust the position of the roll flat head, apply dry oil evenly to the flat head area, and continue to push it into the frame until it is assembled in place.

7. The method for preventing jamming and changing rolls in a rolling mill according to claim 1, characterized in that: The machine frame is pulled back, the rolling groove is aligned with the rolling center line, the water pipes connecting various parts are restored, and the machine frame is reset.

8. A roller changing device for preventing jamming, characterized in that, The device includes: The unlocking module is used to unlock the locking cylinder after the mill stops to unlock the stand and move the stand to the initial position; The positioning module is used to install positioning plates on the inlet and outlet sides of the bracket and the mill base, and to insert positioning pins for positioning. The separation module is used to pull out the pin cylinder and separate the roll and the bracket; The roll changing module is used to push the rolls to the roll changing position to perform the roll changing operation. The adjustment module is used to center and adjust the position of the roll flat head. Insert the pin cylinder, pull out the positioning pin, reset the frame, and lock the locking cylinder to lock the frame.

9. An electronic device, characterized in that, The electronic device includes: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement a rolling mill anti-jamming roll changing method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, It stores a computer program, which, when executed by the computer's processor, causes the computer to perform a rolling mill anti-jamming roll changing method according to any one of claims 1 to 7.

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