Roll change method and system for split coater

Abstract

This invention discloses an automatic roller changing method and system for a split-type coating machine. In this method, the coating roller cart is moved to the offline roller changing position, a hydraulic device opens the bearing seat, and a lifting arm lifts the old coating roller; the coating roller cart is moved to the online standby position, and the roller changing trolley is moved to the roller changing position; the lifting arm places the old coating roller onto the roller changing trolley, and then lifts the new coating roller; the roller changing trolley removes the old coating roller, and the coating roller cart returns to the offline roller changing position; the lifting arm places the new coating roller into the bearing seat, and the hydraulic device closes and locks it. This invention eliminates the need for manual intervention in the roller changing operation. Through the coordinated actions of the coating roller cart, the roller changing trolley, the hydraulic device, and the lifting arm, it shortens the roller changing time, significantly improves roller changing efficiency, reduces manual labor intensity, and ensures continuous production.

Description

Technical Field

[0001] This invention relates to the field of coating machine equipment technology, and in particular to a roller changing method and system for a split-type coating machine. Background Technology

[0002] On cold-rolled strip steel production lines, coating machines are the core equipment used to coat the surface of strip steel, and their coating rollers directly affect the uniformity of coating thickness and product quality. During long-term production, coating rollers need to be replaced periodically due to wear and coating adhesion issues. Currently, roller replacement on coating machines mainly relies on manual operation: requiring 3 to 5 operators to work together. First, the roller fixing bolts are removed; then, the old roller is lifted using a crane or manual hoist; next, the new roller is moved to the installation position; and finally, the bolts are tightened again. The entire process takes up to one hour.

[0003] The manual roller changing method has obvious drawbacks: First, it is labor-intensive and the coating roller is heavy, posing safety hazards during handling; second, the manual alignment operation during roller changing is cumbersome and the roller changing efficiency is extremely low, affecting the continuity of production; third, it is difficult to guarantee the accuracy of manual installation, and the positioning deviation of the coating roller can easily lead to excessive coaxiality deviation, affecting the quality of subsequent coatings.

[0004] Therefore, how to improve roller changing efficiency, reduce manual labor intensity, and ensure production continuity is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a method and system for changing rollers in a split coating machine, which can solve the problems of long time consumption, low efficiency, poor safety, and insufficient positioning accuracy in the prior art, resulting in the inability to accurately place the new roller into the bearing seat.

[0006] The first aspect of this invention provides a roller changing method for a split-type coating machine, comprising:

[0007] Move the coating roller cart to the offline roller changing position, start the hydraulic device to open the bearing seat that fixes the coating roller, and lift the old coating roller by raising the lifting arm to complete the unlocking and picking up of the old coating roller; The control roll carriage moves from the offline roll changing position to the online standby position, and at the same time, the roll changing trolley loaded with the new roll is moved to the roll changing position, which is located in the junction area between the roll carriage and the roll changing trolley. The old coating roller is placed downwards into the preset position of the roller changing trolley by lifting the arm, and then the new coating roller on the roller changing trolley is lifted upwards by lifting the arm to complete the handover of the old and new coating rollers. The control roll changing trolley carries the old coating roll from the roll changing position to the standby position, and at the same time controls the coating roll trolley to return from the online standby position to the offline roll changing position; The new coating roller is placed downwards into the bearing housing installation position by raising the arm. The hydraulic device is then activated to close and lock the bearing housing, thus completing the automatic roller change.

[0008] Preferably, the coating roller is precisely positioned by a position sensor, wherein the positioning accuracy is within the range of -1 mm to +1 mm.

[0009] Preferably, the lifting arm is precisely positioned by a position sensor with a positioning accuracy within the range of -1 mm to +1 mm, so that the end of the coating roller is precisely fitted with the lifting arm and the bearing seat when the old coating roller is disassembled and the new coating roller is installed.

[0010] Preferably, activating the hydraulic device to open the bearing housing of the fixed coating roller includes: Start the hydraulic system, which uses a dual-cylinder synchronous drive to open the bearing housing.

[0011] Preferably, the lifting arm moves up and down under the drive of a servo motor and a ball screw.

[0012] Preferably, moving the roller changing trolley loaded with the new coating roller to the roller changing position includes: positioning the roller changing trolley using a position sensor to align the preset position of the roller changing trolley with the falling trajectory of the lifting arm.

[0013] Preferably, the lifting arm provides real-time position feedback via a built-in position sensor to achieve precise fit between the end of the coating roller and the lifting arm and bearing housing.

[0014] A second aspect of the present invention provides a roller changing system for a split-type coating machine, comprising: The coating roller carriage is used to move along the guide rail between the offline roller changing position and the online standby position; The roller changing trolley is used to move along another set of guide rails to the roller changing position, which is located in the junction area between the coating roller trolley and the roller changing trolley. Bearing housing, used to fix the coating roller; A hydraulic device, connected to the bearing housing, is used to drive the bearing housing to open or close. The boom arm is used for raising and lowering in the vertical direction; The controller, connected to the coating roller cart, roller changing trolley, hydraulic system, and lifting arm, is configured to perform the following operations: Control the coating roller cart to move to the offline roller changing position, start the hydraulic device to open the bearing seat, and control the lifting arm to lift the old coating roller upwards; Control the coating roller carriage to move from the offline roller changing position to the online standby position, and at the same time control the roller changing carriage loaded with the new coating roller to move to the roller changing position; Control the lifting arm to place the old coating roller downwards into the preset position of the roller changing trolley, and then control the lifting arm to lift the new coating roller on the roller changing trolley upwards; The control roll changing trolley carries the old coating roll from the roll changing position to the standby position, and at the same time controls the coating roll trolley to return from the online standby position to the offline roll changing position; Control the lifting arm to place the new coating roller downwards into the installation position of the bearing housing, and start the hydraulic device to close the bearing housing and lock the new coating roller.

[0015] Beneficial effects: (1) High degree of automation, no need for manual participation in roller handling, installation and centering operations, reducing manual labor intensity and safety hazards; (2) Significantly improved roller changing efficiency, the whole process takes less than 10 minutes, which is more than 80% shorter than traditional manual roller changing; (3) High positioning and installation accuracy, the lifting arm adopts servo control plus position sensor feedback to achieve a positioning accuracy of ≤±1mm, ensuring that the new roller is accurately placed into the bearing seat and ensuring the stability of coating quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic flowchart of a roller changing method for a split-type coating machine provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the roller changing system of a split coating machine provided in an embodiment of the present invention. Detailed Implementation

[0018] This invention provides a method and system for changing rollers in a split-type coating machine, which is applicable to the roller replacement operation on the coating processing line of cold-rolled silicon steel and other metal sheets.

[0019] See Figure 1 This figure is a schematic flowchart of a roller changing method for a split-type coating machine according to an embodiment of the present invention. The roller changing method for the split-type coating machine provided in this embodiment of the present invention can be implemented, for example, through the following steps S101-105.

[0020] S101: Move the coating roller cart to the offline roller changing position, start the hydraulic device to open the bearing seat of the fixed coating roller, and lift the old coating roller upward by lifting the arm to complete the unlocking and picking up of the old coating roller.

[0021] In this embodiment of the invention, the coating roller is precisely positioned using a position sensor, with a positioning accuracy ranging from -1 mm to +1 mm. The lifting arm moves up and down under the drive of a servo motor and a ball screw.

[0022] Specifically, the old roller is unlocked and picked up. The coating roller carriage is controlled to move along the guide rail to the offline roller changing position. Precise positioning is achieved through a position sensor to ensure that the horizontal position deviation between the coating roller carriage and the lifting arm is ≤±1mm. The hydraulic device is activated, and the bearing seat is opened by synchronous dual-cylinder drive, releasing the fixing constraint on the old coating roller. Subsequently, the lifting arm is raised upward under the drive of a servo motor and ball screw. The lifting arm provides real-time position feedback signals through a built-in position sensor, achieving a positioning accuracy of ≤±1mm, so that the lifting arm precisely fits against the end of the old coating roller, and the old coating roller is smoothly lifted from the bearing seat. In this embodiment of the invention, the position sensor can be, for example, a laser position sensor, etc., without specific limitations.

[0023] S102: Control the coating roller cart to move from the offline roller changing position to the online standby position, and at the same time move the roller changing trolley loaded with the new coating roller to the roller changing position, which is located in the junction area between the coating roller cart and the roller changing trolley.

[0024] In this embodiment of the invention, the roller changing trolley is positioned by a position sensor so that the preset position of the roller changing trolley is aligned with the falling trajectory of the lifting arm.

[0025] Specifically, the equipment position is switched. The coating roller carriage is controlled to move along the guide rail from the offline roller changing position to the online standby position. At the same time, the roller changing carriage, which is pre-loaded with a new coating roller, is moved along another set of guide rails to the roller changing position, which is located directly below the lifting arm. The roller changing carriage is positioned by a position sensor to ensure that its preset position is aligned with the falling trajectory of the lifting arm.

[0026] S103: The old coating roller is placed downwards on the preset position of the roller changing trolley by lifting the arm, and then the new coating roller on the roller changing trolley is lifted upwards by lifting the arm to complete the handover of the old and new coating rollers.

[0027] In this embodiment of the invention, the lifting arm provides real-time position feedback through a built-in position sensor to achieve precise fit between the end of the coating roller and the lifting arm and bearing seat.

[0028] Specifically, the handover of old and new rollers is carried out. Based on the feedback signal from the position sensor, the lifting arm moves downward with a positioning accuracy of ≤±1mm, placing the old coating roller in the preset position of the roller changing trolley. Then, the roller changing trolley is moved so that the lifting arm is close to the end of the new coating roller, and then the lifting arm is raised upward to smoothly lift the new coating roller from the roller changing trolley.

[0029] S104: Control the roller changing trolley to move the old coating roller from the roller changing position to the standby position, and at the same time control the coating roller trolley to return from the online standby position to the offline roller changing position.

[0030] In this embodiment of the invention, the equipment is reset. The control roll changing trolley carries the old coating roll from the roll changing position to the standby position, while the coating roll trolley returns from the online standby position to the offline roll changing position. The position is precisely positioned by the position sensor to ensure that the relative position accuracy between the coating roll trolley and the lifting arm is ≤±1mm, providing positioning assurance for the installation of the new roll.

[0031] S105: The new coating roller is placed downwards into the installation position of the bearing housing by raising the arm. The hydraulic device is activated to close the bearing housing and lock the new coating roller, thus completing the automatic roller change.

[0032] In this embodiment of the invention, the hydraulic device is activated, and the bearing housing is opened by synchronous dual-cylinder drive. The lifting arm is precisely positioned by a position sensor with a positioning accuracy within the range of -1 mm to +1 mm, so that the end of the coating roller is precisely aligned with the lifting arm and the bearing housing when the old coating roller is disassembled and the new coating roller is installed.

[0033] Specifically, the new roller is installed and locked. Based on the installation position coordinates fed back by the position sensor, the lifting arm moves downwards with a positioning accuracy of ≤±1mm, precisely placing the new coating roller into the installation position of the bearing housing. The hydraulic system is activated, and the two cylinders synchronously drive the bearing housing to close, clamping and fixing the new coating roller. The lifting arm then returns to its original position, completing the entire automatic roller changing process.

[0034] Beneficial effects: (1) High degree of automation: No manual intervention is required for roller handling, installation and alignment operations. The entire process is completed automatically through equipment collaboration, reducing the intensity of manual labor and safety hazards; (2) Significantly improved roller changing efficiency: The entire process takes less than 10 minutes, which is more than 80% shorter than the traditional manual roller changing; (3) High positioning and installation accuracy: The lifting arm adopts servo control + position sensor feedback to achieve a positioning accuracy of ≤±1mm, ensuring that the new roller is accurately placed into the bearing seat and ensuring the stability of coating quality.

[0035] Based on the methods provided in the above embodiments, this invention also provides a roller changing system for a split coating machine. The roller changing system for the split coating machine is described below with reference to the accompanying drawings.

[0036] See Figure 2 The figure is a schematic diagram of the roller changing system of a split coating machine provided in an embodiment of the present invention.

[0037] The roller changing system 200 of the split coating machine provided in this embodiment of the invention includes: a coating roller carriage 201, a roller changing trolley 202, a bearing housing 203, a hydraulic device 204, a lifting arm 205, and a controller 206. The controller 206 is connected to the coating roller carriage 201, the roller changing trolley 202, the hydraulic device 204, and the lifting arm 205 via control signal lines (shown as dashed lines in the figure); the hydraulic device 204 is connected to the bearing housing 203 via hydraulic pipelines (shown as solid lines in the figure); the coating roller carriage 201 carries the bearing housing 203 and the old coating roller, and the roller changing trolley 202 carries the new coating roller.

[0038] The coating roller carriage 201 is used to move along the guide rail between the offline roller changing position and the online standby position. Roll changing trolley 202 is used to move along another set of guide rails to the roll changing position, which is located in the junction area between coating roll trolley 201 and roll changing trolley 202; Bearing housing 203 is used to fix the coating roller; Hydraulic device 204 is connected to bearing housing 203 and is used to drive bearing housing 203 to open or close. The lifting arm 205 is used for vertical lifting and lowering; Controller 206 is connected to coating roller carriage 201, roller changing carriage 202, hydraulic device 204 and lifting arm 205. Controller 206 is configured to perform the following operations: Control the coating roller cart 201 to move to the offline roller changing position, start the hydraulic device 204 to open the bearing seat 203, and control the lifting arm 205 to lift the old coating roller upward. Control the coating roller carriage 201 to move from the offline roller changing position to the online standby position, and at the same time control the roller changing carriage 202 loaded with the new coating roller to move to the roller changing position; Control the lifting arm 205 to place the old coating roller downwards into the preset position of the roller changing trolley 202, and then control the lifting arm 205 to lift the new coating roller on the roller changing trolley 202 upwards; The control roll changing trolley 202 carries the old coating roll from the roll changing position to the standby position, and at the same time controls the coating roll trolley 201 to return from the online standby position to the offline roll changing position; The control arm 205 lowers the new coating roller to the installation position of the bearing housing 203, and the hydraulic device 204 is activated to close and lock the bearing housing 203.

[0039] Since the roller changing system 200 of the split coating machine is a system corresponding to the roller changing method of the split coating machine provided in the above method embodiments, the specific implementation of each unit of the roller changing system 200 of the split coating machine is based on the same concept as in the above method embodiments. Therefore, for the specific implementation of each unit of the roller changing system 200 of the split coating machine, please refer to the description of the roller changing method of the split coating machine in the above method embodiments, and it will not be repeated here.

[0040] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic roller changing method for a split-type coating machine, characterized in that, include: Move the coating roller cart to the offline roller changing position, start the hydraulic device to open the bearing seat that fixes the coating roller, and lift the old coating roller by lifting the lifting arm to complete the unlocking and picking up of the old coating roller; The coating roller cart is controlled to move from the offline roller changing position to the online standby position, and at the same time, the roller changing trolley loaded with the new coating roller is moved to the roller changing position, which is located in the junction area between the coating roller cart and the roller changing trolley. The old coating roller is placed downwards into the preset position of the roller changing trolley by the lifting arm, and then the new coating roller on the roller changing trolley is lifted upwards by the lifting arm to complete the handover of the old and new coating rollers. The roller changing trolley is controlled to carry the old coating roller from the roller changing position to the standby position, and at the same time, the coating roller trolley is controlled to return from the online standby position to the offline roller changing position; The new coating roller is placed downwards into the installation position of the bearing housing by the lifting arm, and the hydraulic device is activated to close and lock the bearing housing, thus completing the automatic roller change.

2. The method according to claim 1, characterized in that, The coating roller is precisely positioned using a position sensor, with a positioning accuracy ranging from -1 mm to +1 mm.

3. The method according to claim 1, characterized in that, The lifting arm is precisely positioned by a position sensor with a positioning accuracy within the range of -1 mm to +1 mm, so that the end of the coating roller is precisely fitted with the lifting arm and the bearing seat when the old coating roller is disassembled and the new coating roller is installed.

4. The method according to claim 1, characterized in that, The hydraulic activation device opens the bearing housing of the fixed coating roller, including: The hydraulic device is activated, and the hydraulic device opens the bearing housing by means of synchronous dual-cylinder drive.

5. The method according to claim 1, characterized in that, The lifting arm moves up and down under the drive of a servo motor and a ball screw.

6. The method according to claim 1, characterized in that, The step of moving the roller changing trolley loaded with the new coating roller to the roller changing position includes: the roller changing trolley being positioned by a position sensor so that the preset position of the roller changing trolley is aligned with the falling trajectory of the lifting arm.

7. The method according to claim 1, characterized in that, The lifting arm uses a built-in position sensor to provide real-time position feedback signals, thereby achieving precise contact between the end of the coating roller and the lifting arm and the bearing seat.

8. An automatic roller changing system for a split-type coating machine, characterized in that, include: The coating roller carriage is used to move along the guide rail between the offline roller changing position and the online standby position; A roller changing trolley is used to move along another set of guide rails to the roller changing position, which is located in the junction area between the coating roller trolley and the roller changing trolley. Bearing housing, used to fix the coating roller; A hydraulic device, connected to the bearing housing, is used to drive the bearing housing to open or close. The boom arm is used for raising and lowering in the vertical direction; The controller, connected to the coating roller trolley, the roller changing trolley, the hydraulic device, and the lifting arm, is configured to perform the following operations: Control the coating roller cart to move to the offline roller changing position, start the hydraulic device to open the bearing seat, and control the lifting arm to lift the old coating roller upward; The coating roller carriage is controlled to move from the offline roller changing position to the online standby position, and at the same time, the roller changing carriage loaded with the new coating roller is controlled to move to the roller changing position. Control the lifting arm to place the old coating roller downwards into the preset position of the roller changing trolley, and then control the lifting arm to lift the new coating roller on the roller changing trolley upwards; The roller changing trolley is controlled to carry the old coating roller from the roller changing position to the standby position, and at the same time, the coating roller trolley is controlled to return from the online standby position to the offline roller changing position; Control the lifting arm to place the new coating roller downwards into the installation position of the bearing seat, and activate the hydraulic device to close the bearing seat and lock the new coating roller.

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