Control method for improving coiling quality of scroll of slitting machine

Abstract

The invention discloses a control method for improving the coiling quality of a slitting machine reel, and belongs to the field of slitting machine coiling transmission rate ratio control. According to the invention, the problem that the processing efficiency is influenced due to the curl and layer crossing condition when the strip is pneumatically wound by the slitting machine is solved. Comprising the following steps that firstly, the coiling machine speed Vcoil of a coiling machine installed on the slitting machine is regulated and controlled, the coiling machine speed Vcoil is kept to meet the initial speed value V0, and the coiling diameter Dact is gradually increased; 2, when the coiling diameter reaches a numerical value D1, the coiling machine speed Vcoil is regulated and controlled, so that the coiling machine speed Vcoil is reduced along with the increase of the coiling diameter Dact, and the coiling diameter Dact and the coiling machine speed Vcoil are in a direct proportion function relationship; 3, when the coiling diameter reaches the numerical value D2, the speed of the coiling machine is reduced to the final speed numerical value V1, the speed Vcoil of the coiling machine is regulated and controlled, the speed Vcoil of the coiling machine is kept to meet the final speed numerical value V1, the coiling diameter Dact is gradually increased, the numerical value V1 is smaller than the numerical value V0, and the numerical value D1 is smaller than the numerical value D2. And the edge of a material roll product is curled neatly. The method is used for controlling the slitting machine.

Description

Technical Field

[0001] The invention relates to a control method for improving the curling quality of a slitting machine reel, and belongs to the field of slitting machine curling transmission rate ratio control. Background Art

[0002] The machine transmission system of the slitting machine adopts AC / DC multi-axis modular drive, and the drive is speed controlled. The reel of the coiling machine adopts pneumatic and hydraulic methods, and can automatically switch the reel control according to the reel input diameter. When the slitting knife is used to cut two wide strips in tension mode, the transmission rate ratio between the slitting knife and the coiling machine is too small. The coiling effect of the 150mm pneumatic expansion strip reel is not good, and the strip is easy to slip on the reel, resulting in poor curling quality, which cannot meet the high standards of market customers.

[0003] In the tension mode, the speed setting of the slitting knife in the slitting machine transmission system is 0.9 to 1.1 times the speed of the machine train, and the speed setting of the coiler is equal to the speed of the machine train. The transmission rate ratio of the slitting knife and the coiler is too low, resulting in insufficient tension between the two, causing the strip to layer on the reel. A significant reduction in the speed multiple of the slitting knife through the HMI human-machine interface often results in poor shearing effect of the slitting knife.

[0004] In summary, when the existing slitting machine pneumatically reels the strip, there is a problem of curling and layer leakage, which in turn affects the processing efficiency. Summary of the invention

[0005] The invention aims to solve the problem that when the existing pneumatic slitting machine rolls the strip, there is curling and layer-stripping, which affects the processing efficiency, and further provides a method for improving the curling quality of the slitting machine roll.

[0006] The technical solution of the present invention is a control method for improving the curling quality of a slitting machine reel, comprising the following steps:

[0007] Step 1: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act gradually increase in size;

[0008] Step 2: When the coiling diameter reaches the value D1, adjust the coiling machine speed V coiler , so that the coiler speed V coiler With curling diameter D act The curling diameter D act With coiler speed V coiler In direct proportional function relationship;

[0009] Step 3: When the coiling diameter reaches the value D2, the coiling machine speed is reduced to the final speed value V1, and the coiling machine speed V is adjusted. coiler , maintain the coiler speed V coiler Satisfy the final speed value V1, curling diameter D act Gradually increasing, the value V1 is smaller than the value V0, and the value D1 is smaller than the value D2.

[0010] As another improvement of the present invention, the direct proportional function relationship in step 2 is specifically:

[0011]

[0012] Coiler speed V of the coiler installed on the slitting machine coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where

[0013] Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula:

[0014]

[0015] Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

[0016]

[0017] As another improvement of the present invention, the direct proportional function relationship in step 2 is specifically:

[0018]

[0019] Coiler speed V of the coiler installed on the slitting machine coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where

[0020] Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula:

[0021]

[0022] Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

[0023]

[0024] As another improvement of the present invention, the value S0 in step 2 is 1.3, the value S1 is 1.11, the value D1 is 800 mm, and the value D2 is 1100 mm.

[0025] As another improvement of the present invention, step one includes the following steps:

[0026] Step 1: Increase the air supply pressure of the pneumatic expansion strip reel on the slitting machine to 7 bar;

[0027] Step 2: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act Gradually increase.

[0028] As another improvement of the present invention, the implementation conditions of step one include adding an air compressor and installing pipelines.

[0029] As another improvement of the present invention, the operation mode of the slitting machine in step one is tension mode.

[0030] As another improvement of the present invention, a 150 mm pneumatic reel is installed on the winder in step one.

[0031] Beneficial effects of the present invention:

[0032] 1. When the coiling diameter reaches the value D1, the coiling machine speed V is adjusted. coiler , so that the coiler speed V coiler With curling diameter D act The curling diameter D act With coiler speed V coiler When the coiling diameter reaches the value D2, the coiling machine speed is reduced to the final speed value V1, and the coiling machine speed V is adjusted. coiler , maintain the coiler speed V coiler The final speed value V1 is met. This control method is used to solve the problem of curling and layering of 150mm pneumatic reel strip in the tension mode of the slitting machine, so that the tension between the slitting knife and the curling machine is improved, and the edge of the material roll product is curled neatly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the installation of the longitudinal shearing machine. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the examples of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0035] Specific implementation method 1: Combination Figure 1 This embodiment is described. This embodiment is a control method for improving the curling quality of a slitting machine reel, comprising the following steps:

[0036] Step 1: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act gradually increase in size;

[0037] Step 2: When the coiling diameter reaches the value D1, adjust the coiling machine speed V coiler , so that the coiler speed V coiler With curling diameter D act The curling diameter D act With coiler speed V coiler In direct proportional function relationship;

[0038] Step 3: When the coiling diameter reaches the value D2, the coiling machine speed is reduced to the final speed value V1, and the coiling machine speed V is adjusted. coiler , maintain the coiler speed V coiler Satisfy the final speed value V1, curling diameter D act Gradually increasing, the value V1 is smaller than the value V0, and the value D1 is smaller than the value D2.

[0039] This embodiment is implemented and improved on the original longitudinal shear machine transmission system. The original system is driven by multi-axis modularization, and the driver is speed controlled. Under the tension mode of operation, the speed setting of the longitudinal cutter in its transmission system is 0.9 to 1.1 times the set speed of the machine series, and the speed setting of the coiler is almost equal to the set speed of the machine series. The transmission rate ratio of the longitudinal cutter and the coiler is too low, resulting in insufficient tension between the two, causing the strip to layer on the reel. The effect of processing and curling according to the control method in this embodiment is relatively neat, and the tension between the longitudinal cutter and the coiler is relatively sufficient. The edges of the coiled products are curled neatly.

[0040] Specific implementation method 2: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that the direct proportional function relationship in step 2 is specifically:

[0041]

[0042] Coiler speed V of the coiler installed on the slitting machine coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where

[0043] Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula:

[0044]

[0045] Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

[0046]

[0047] Specific implementation method three: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that the direct proportional function relationship in step 2 is specifically:

[0048]

[0049] Coiler speed V of the coiler installed on the slitting machine coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where

[0050] Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula:

[0051]

[0052] Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

[0053]

[0054] Specific implementation method four: Combination Figure 1This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the value S0 in step 2 is 1.3, the value S1 is 1.11, the value D1 is 800mm, and the value D2 is 1100mm. In the Step 7 software program, the automatic variable program of the coiling machine speed ratio is written according to the formula. As the coiling diameter increases from 800mm to 1100mm, the coiling transmission speed ratio gradually decreases from 1.3 to 1.11, the coiling effect is relatively neat, and the coiling quality of the pneumatic coiling strip is improved.

[0055] Specific implementation method five: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that step 1 includes the following sub-steps:

[0056] Step 1: Increase the air supply pressure of the pneumatic expansion strip reel on the slitting machine to 7 bar;

[0057] Step 2: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act The pneumatic expansion strip reel is installed on the coiler, and the air supply pressure is increased from 5 bar of the original system to 7 bar, which can better meet the control effect of the slitting machine on the coiler.

[0058] Specific implementation method six: Combination Figure 1 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the implementation conditions of step 1 include adding an air compressor and installing pipelines.

[0059] Specific implementation method seven: Combination Figure 1 To illustrate this embodiment, the difference between this embodiment and the specific embodiment 1 is that the operation mode of the slitting machine in step 1 is the tension mode.

[0060] Specific implementation method eight: Combination Figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that a 150 mm pneumatic expansion strip reel is installed on the reel in step 1. Experiments show that the curling effect of the 150 mm pneumatic expansion strip reel is more uniform.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for improving the curling quality of a slitting machine reel, characterized in that It includes the following steps: Step 1: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act gradually increase in size; Step 2: When the coiling diameter reaches the value D1, adjust the coiling machine speed V coiler , so that the coiler speed V coiler With curling diameter D act The curling diameter D act With coiler speed V coiler In direct proportional function relationship; Step 3: When the coiling diameter reaches the value D2, the coiling machine speed is reduced to the final speed value V1, and the coiling machine speed V is adjusted. coiler , maintain the coiler speed V coiler Satisfy the final speed value V1, curling diameter D act Gradually increasing, the value V1 is smaller than the value V0, and the value D1 is smaller than the value D2.

2. A control method for improving the curling quality of a slitting machine reel according to claim 1, characterized in that: The specific proportional function relationship in step 2 is: Slitting machine coiler speed V coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula: Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

3. A control method for improving the curling quality of a slitting machine reel according to claim 1, characterized in that: The specific proportional function relationship in step 2 is: Slitting machine coiler speed V coiler Equal to the set speed V of the train line Multiply by the rate ratio S slip , the running speed of the slitting knife installed on the slitting machine is equal to the set speed V of the machine train line , where Speed ​​ratio S slip The initial velocity ratio value S0 satisfies the following formula: Speed ​​ratio S slip The final velocity ratio value S1 satisfies the following formula:

4. A control method for improving the curling quality of a slitting machine reel according to claim 2 or 3, characterized in that: In step 2, the value S0 is 1.3, the value S1 is 1.11, the value D1 is 800 mm, and the value D2 is 1100 mm.

5. A control method for improving the curling quality of a slitting machine reel according to claim 1, characterized in that: Step 1 includes the following steps: Step 1: Increase the air supply pressure of the pneumatic expansion strip reel on the slitting machine to 7 bar; Step 2: Adjust the coiler speed V of the coiler installed on the slitting machine coiler , maintain the coiler speed V coiler Satisfy the initial speed value V0, curling diameter D act Gradually increase.

6. A control method for improving the curling quality of a slitting machine reel according to claim 1, characterized in that: The implementation conditions for step one include adding an air compressor and installing pipelines.

7. A control method for improving the curling quality of a slitting machine reel according to any one of claims 1 to 6, characterized in that: In step 1, the operation mode of the slitting machine is tension mode.

8. A control method for improving the curling quality of a slitting machine reel according to any one of claim 7, characterized in that: In step 1, a 150 mm pneumatic expansion strip reel is installed on the reel.

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