In this paper, the WLJ-II-1600 corrugated board production line of the slitter's structure, performance specifications, use of operation, maintenance and other aspects of the details of the description, so that operators and maintenance personnel to work smoothly.
1. WLJ-II-1600 corrugated board production line The WLJ-II-1600 corrugated board production line is an automatic continuous production line. It is a medium-sized, high-efficiency equipment suitable for mass production. It adopts centralized control and is easy to operate and safe. With specifications are as follows:
The highest speed 100m/min (refers to the three-layer corrugated cardboard, five layers of 70 ~ 80m/min)
Economic speed 80m/min
Cardboard width 1600mm
Productivity 45000m2/8h
Adhesive corn starch vapor pressure 0.9807 ~ 1.1768Mpa
Steam consumption 3000kg/h
Total power 150kw
The total length of the organization 79m or 88m two specifications Second, the Slitter This Slitter is mainly composed of rotary cutting machine, slitting line and cross-cutting machine. The following sections give detailed introductions. 1. Rotary cutting machine This machine is installed behind the double-sided machine. The purpose is to cut off and discharge the poorly-bonded cardboard when replacing the cardboard specifications, and to cut off the end of the replacement cardboard.
The rotary cutting machine is a soft cut, the cutter is mounted on the upper roller, and the surface of the lower anvil roller is pressed off when the urethane rotates. Each revolution, cutting once, operation is divided into a cutting and continuous cutting in two ways. The length of the knife is 1650mm, so the effective cutting width is 1600mm. Both ends of the anvil roll are supported by guide plates, and adjusting the adjusting bolt can easily change the cutting pressure. Behind the cutter, there is a opening and closing baffle, which is controlled by the cylinder. When the bad cardboard needs to be removed, the baffle plate is tilted and the bad cardboard is introduced into the waste paper removing rack.
Operational notes:
When the corrugated board is transported, depending on the length of the bad board to be removed, the button (single cutting or continuous cutting) is selected. The machine will continuously cut and adjust it to cut twice. If necessary, it can be adjusted to 3 to 4 times to adjust the line. The time in the circuit breaker can be.
Cut once, press the cutting button once, and stop once the cutter rotates.
Continuous cutting, press the continuous cutting button, and the cutter will cut continuously for two times.
Repair and maintenance:
Regular inspection work:
a. Check the lubrication of shafts, transmission wheels, chains, etc. daily.
b. Check the surface of the cutter and anvil roller daily.
c. Check whether the magnetic switch and cylinder are in normal operation every day.
d. Replace the reducer lubricant every six months to check the working conditions of the clutch and brake.
Adjustment and replacement:
a. Adjustment of the pressure of the anvil roll, keeping the knife adjusted to cut into urethane about 2mm.
b. After the anvil roll is worn or the knife is worn out, it should be replaced.
c. The anvil roll must be replaced with a new one after grinding 4mm. When replacing the lubricating plate, bearing, sprocket, etc. supporting it, the anvil roller can be taken out. When the anvil roller is installed, the depth of the knife is adjusted and the parallelism with the upper roller is used to fix the supporting plate.
2. Slitting Cutter The Slitting Cutter has two sets of cutters, each consisting of four axes, symmetrically arranged. The machine cuts and presses the corrugated board conveyed from the double-sided machine. Its power and double-sided machine, cross-cutting machine share a drive shaft to ensure the speed synchronization of the three. In order to ensure a smooth cutting and a smooth and trimming edge, the cutting speed of the cutting tool is approximately 20% faster than that of corrugated cardboard.
The symmetrical central axes of the two sets of cutters form an intermediate frame that is supported on both sides of the support. The central axis can be adjusted by 40 mm to the center point by turning the screw to the center point with the hand wheel. It can be used to adjust the cardboard when it is out of center. When one set of tools is working, the other set of tools can be pre-adjusted to the size of the next specification.
Operation and precautions: The slitting and crimping machine shall coordinate with the main transmission in order to realize the tool change without stopping the machine.
The tool change control procedure is as follows:
First reduce the operating speed of the double-sided machine to less than 40m/min - start the rotary cutting machine to cut the paperboard - the main drive changes the speed and divides the board into fast and slow conveying - when the quick board is started by the slitting and cutting machine - - The slitter rotates to 180°C. After stopping, the slow paper reenters the slitting tool and continues slitting. The cross cutting machine adjusts the new cutting length and instantaneous cutting speed. - The main drive accelerates to normal driving speed.
When the slitter is used for tool change, it must be carried out at a speed of less than 40m/min to prevent gears from colliding and causing equipment accidents.
When setting the knife, between any pairs of slitting blades, a gap of not less than 1 sheet of 127 grams of base paper thickness shall be maintained, and a new knife shall be used to maintain a larger gap to prevent the blade from rocking and damaging the blade during operation.
3. Cross-cutting machine The cross-cutting machine is a mechanical double-knife cutting and is divided into upper and lower layers, which can simultaneously actuate double-knife and cut two different specifications of cardboard, which is beneficial to increase the effective utilization rate of the cardboard. When needed, any pair of cutter shafts can also be started for cutting.
The cutting length is changed by adjusting the rotation speed of the cutter shaft through a conical stepless transmission, and the cutting range is arbitrarily selected from 600 to 2400 mm. With the double crank instantaneous cutting speed mechanism, the tool shaft can be accelerated or decelerated so that the instant cutting speed of the knife is equal to the conveying speed of the cardboard. The machine's cutting accuracy at stable speed is ±2mm.
Controlling the length of cuts and adjusting the instantaneous cutting speed is done by controlling the buttons on the panel surface. When driving a car, you can adjust the next cut specification. Changes in driving speed do not affect the length of cuts.
The power of the cross cutting machine comes from the main rotating shaft and is connected with the CVT through the gear box. The ground shaft guarantees the synchronization of the double-sided machine, slitting machine and cross cutting machine. Any cutter shaft that connects or disconnects the cross cutter is controlled by an electromagnetic clutch.
The cutter shaft is supported by medium-sized ball bearings, and the rotation of the pair of cutter shafts is driven by the meshing of the gears at both ends of the cutter shaft. The transmission gear is a combination type, which can adjust the reward and reward when the gear is worn out.
transmission:
With cone-type friction disc type continuously variable transmission, open the protective cover on the power side of the cross cutter, and you can see the whole picture and carry out maintenance inspections. The role of the transmission changes the cutting length. When the continuously variable transmission ratio is adjusted to a certain value, the cutting length becomes a fixed value. Whether the driving speed increases or decreases, the cutting length does not change, ie, it is not affected by the feeding speed. .
Two limit switches are installed on the cross beam of the shift arm, and the limit switch works when the speed-regulating motor drives the cone friction disc to the lowest point. Do not use beyond the speed range.
Double crank instantaneous speed regulation mechanism:
The instantaneous speed-regulating mechanism changes the constant-speed circular motion of the tool shaft into a non-uniform circular motion through the double-crank relationship, so that the instantaneous paper cutting speed of the tool shaft can be adjusted to be equal to the paper-feeding speed of the paper board. For example, when the short paper is rotated, the spindle speed increases. At this time, the cutting speed will increase the paper feed speed. When the long paper is cut, the spindle speed will slow down. At this time, the cutting speed will be smaller than the feeding speed. Therefore, the back knife cuts. When the short paper is moved, the slider moves down to speed up the cutting speed; when cutting the long paper, sliding it up moves the paper cutting speed slower. The slider moves up when the front blade cuts the short paper and moves downward when cutting the long paper.
Instantaneous cutting speed should always be corrected according to the orderliness of the cutting edge of the paperboard. A limit switch is placed on the indication lever of the operation side of the cutting machine. When the slider of the crank reaches the highest or lowest position, the limit switch works.
The adjustment of the instantaneous speed should be carried out at a driving speed of not less than 25m/s. No parking adjustments.
Engaging roller:
Each pair of arbors has a pair of infeed rollers in front. The infeed roller has a faster line speed than the feed speed, so its function is to correct the tension between the double-sided machine and the cross-cutting machine. Suddenly it is tight and tight. The infeed roller is equipped with a counterweight to adjust the pressure on the board. The position of the counterweight can be adjusted.
Feed tray:
The feed tray is divided into upper and lower layers. The feed roller speed is slightly faster than the feed speed so that the cut cardboards prevent each other from overlapping interference.
A paperboard brake pad is installed on the paper feeding rack to prevent the paperboard from being disarranged after being cut off, and the brake pad can adjust the pressure with the change of cutting length.
Adjust knife:
The two blades are pressed on the cutter shaft with a pressure plate, and the gap size between the blades affects the cutting quality. The gap is too large cardboard can not be cut, it is best to adjust to 0.02 ~ 0.03mm as well. However, the size of the gap is also not good. At this time, the two blades easily hit the blade.
When adjusting the knife, if the clearance is too large, you can first adjust the rotation of a knife shaft around its own axis. If you loosen the screw 1, the screw 1 and the screw 1 play a role in the pin 3 to produce a gap. At this time, tighten the screw 2, then the cutting edge Rotate clockwise. Instead, loosen the screw 2 first, and tighten the screw 1 so that the knife shaft rotates counterclockwise. Due to the rotation of the cutter shaft, the gap between the upper and lower cutter shaft blades can be changed. However, it should be noted that the gears at both ends of the cutter shaft should be adjusted to be a single-piece cutter, because the gear is a two-piece combination and the cutter does not function as a cutter. The double-set gear is used to wear gears. After adjusting the gap clearance. The drive shaft is a single piece gear shaft.
Use a rotary arbor to change the tip clearance during coarse adjustment. Fine adjustment is to adjust the relative position of the blade and the knife shaft. It has been described above that the blade is pressed on the knife shaft through a row of screws with a pressure plate, and a top wire between each two screws is used for the top blade. If there is a gap in the tip of a certain segment, the compression screw is loosened and the tip wire is pulled, so that the blade part and the cutter shaft generate a relative displacement, thereby achieving the purpose of fine tuning. Fine-tuning is best to start from the end of the blade, step by step gradually transferred to the other end, and can be cut with thin paper (newspaper) test can be cut, where the cut can also be part of the paper adjustment. When the knife is adjusted, the shaft is manually rotated, and the rotation speed is very slow and slow.
Sharpening knife:
Sharp edges should always be maintained to achieve good cutting results. Grinding tools are conditional on the use of grinders. Unconditional grinding can be done with an oil grindstone. And ensure that the blades are on the same line. The blade should be properly fixed when the knife is worn.
Operational notes:
Changing the cutting length or adjusting the instantaneous speed should be carried out under the operation of the machine. The operating speed is not lower than 25mm/min. Otherwise, the continuously variable transmission and the instantaneous speed-regulating mechanism will be damaged. Pay special attention to this.
When changing the cutting length, you can manually (adjust the length and instantaneous speed) or automatically (changing the cutting length and instantaneous speed at the same time), but be aware that some ranges should correct the instantaneous speed after changing the cutting length.
The spline shaft of the transmission must not be lubricated too much. When it is too large, the oil will splash on the conical friction disc and the conveyor belt, causing slippage resulting in poor cutting length.
Lubrication, always check the oil cup, the oil in the cup is full of oil, in order to check whether the oil is injected into the bearing, you can remove the cup to see if the oil out of the hole.
To check whether the crankshaft of the instantaneous speed-regulating mechanism is immersed in oil, always check that the oil tank is filled with oil.
Cutting speed limit:
The cardboard cut-off length and the maximum allowable speed when starting up should be as follows:
Third, the prospects of the cutting machine transformation This cutting machine is all mechanical transmission, so maintenance is more troublesome, cardboard cutting edge is not ideal, the error is larger (up to 20mm), causing great losses, now the most advanced or imported The same type of equipment is controlled by a computer. The main benefits are: 1 easy to operate; 2 to ensure quality; 3 cut accurate; can achieve better economic benefits, the error is only 2mm, equivalent to one-tenth of mechanical transmission. (Zhuhai Huafeng Group Chen Kuncai)
1. WLJ-II-1600 corrugated board production line The WLJ-II-1600 corrugated board production line is an automatic continuous production line. It is a medium-sized, high-efficiency equipment suitable for mass production. It adopts centralized control and is easy to operate and safe. With specifications are as follows:
The highest speed 100m/min (refers to the three-layer corrugated cardboard, five layers of 70 ~ 80m/min)
Economic speed 80m/min
Cardboard width 1600mm
Productivity 45000m2/8h
Adhesive corn starch vapor pressure 0.9807 ~ 1.1768Mpa
Steam consumption 3000kg/h
Total power 150kw
The total length of the organization 79m or 88m two specifications Second, the Slitter This Slitter is mainly composed of rotary cutting machine, slitting line and cross-cutting machine. The following sections give detailed introductions. 1. Rotary cutting machine This machine is installed behind the double-sided machine. The purpose is to cut off and discharge the poorly-bonded cardboard when replacing the cardboard specifications, and to cut off the end of the replacement cardboard.
The rotary cutting machine is a soft cut, the cutter is mounted on the upper roller, and the surface of the lower anvil roller is pressed off when the urethane rotates. Each revolution, cutting once, operation is divided into a cutting and continuous cutting in two ways. The length of the knife is 1650mm, so the effective cutting width is 1600mm. Both ends of the anvil roll are supported by guide plates, and adjusting the adjusting bolt can easily change the cutting pressure. Behind the cutter, there is a opening and closing baffle, which is controlled by the cylinder. When the bad cardboard needs to be removed, the baffle plate is tilted and the bad cardboard is introduced into the waste paper removing rack.
Operational notes:
When the corrugated board is transported, depending on the length of the bad board to be removed, the button (single cutting or continuous cutting) is selected. The machine will continuously cut and adjust it to cut twice. If necessary, it can be adjusted to 3 to 4 times to adjust the line. The time in the circuit breaker can be.
Cut once, press the cutting button once, and stop once the cutter rotates.
Continuous cutting, press the continuous cutting button, and the cutter will cut continuously for two times.
Repair and maintenance:
Regular inspection work:
a. Check the lubrication of shafts, transmission wheels, chains, etc. daily.
b. Check the surface of the cutter and anvil roller daily.
c. Check whether the magnetic switch and cylinder are in normal operation every day.
d. Replace the reducer lubricant every six months to check the working conditions of the clutch and brake.
Adjustment and replacement:
a. Adjustment of the pressure of the anvil roll, keeping the knife adjusted to cut into urethane about 2mm.
b. After the anvil roll is worn or the knife is worn out, it should be replaced.
c. The anvil roll must be replaced with a new one after grinding 4mm. When replacing the lubricating plate, bearing, sprocket, etc. supporting it, the anvil roller can be taken out. When the anvil roller is installed, the depth of the knife is adjusted and the parallelism with the upper roller is used to fix the supporting plate.
2. Slitting Cutter The Slitting Cutter has two sets of cutters, each consisting of four axes, symmetrically arranged. The machine cuts and presses the corrugated board conveyed from the double-sided machine. Its power and double-sided machine, cross-cutting machine share a drive shaft to ensure the speed synchronization of the three. In order to ensure a smooth cutting and a smooth and trimming edge, the cutting speed of the cutting tool is approximately 20% faster than that of corrugated cardboard.
The symmetrical central axes of the two sets of cutters form an intermediate frame that is supported on both sides of the support. The central axis can be adjusted by 40 mm to the center point by turning the screw to the center point with the hand wheel. It can be used to adjust the cardboard when it is out of center. When one set of tools is working, the other set of tools can be pre-adjusted to the size of the next specification.
Operation and precautions: The slitting and crimping machine shall coordinate with the main transmission in order to realize the tool change without stopping the machine.
The tool change control procedure is as follows:
First reduce the operating speed of the double-sided machine to less than 40m/min - start the rotary cutting machine to cut the paperboard - the main drive changes the speed and divides the board into fast and slow conveying - when the quick board is started by the slitting and cutting machine - - The slitter rotates to 180°C. After stopping, the slow paper reenters the slitting tool and continues slitting. The cross cutting machine adjusts the new cutting length and instantaneous cutting speed. - The main drive accelerates to normal driving speed.
When the slitter is used for tool change, it must be carried out at a speed of less than 40m/min to prevent gears from colliding and causing equipment accidents.
When setting the knife, between any pairs of slitting blades, a gap of not less than 1 sheet of 127 grams of base paper thickness shall be maintained, and a new knife shall be used to maintain a larger gap to prevent the blade from rocking and damaging the blade during operation.
3. Cross-cutting machine The cross-cutting machine is a mechanical double-knife cutting and is divided into upper and lower layers, which can simultaneously actuate double-knife and cut two different specifications of cardboard, which is beneficial to increase the effective utilization rate of the cardboard. When needed, any pair of cutter shafts can also be started for cutting.
The cutting length is changed by adjusting the rotation speed of the cutter shaft through a conical stepless transmission, and the cutting range is arbitrarily selected from 600 to 2400 mm. With the double crank instantaneous cutting speed mechanism, the tool shaft can be accelerated or decelerated so that the instant cutting speed of the knife is equal to the conveying speed of the cardboard. The machine's cutting accuracy at stable speed is ±2mm.
Controlling the length of cuts and adjusting the instantaneous cutting speed is done by controlling the buttons on the panel surface. When driving a car, you can adjust the next cut specification. Changes in driving speed do not affect the length of cuts.
The power of the cross cutting machine comes from the main rotating shaft and is connected with the CVT through the gear box. The ground shaft guarantees the synchronization of the double-sided machine, slitting machine and cross cutting machine. Any cutter shaft that connects or disconnects the cross cutter is controlled by an electromagnetic clutch.
The cutter shaft is supported by medium-sized ball bearings, and the rotation of the pair of cutter shafts is driven by the meshing of the gears at both ends of the cutter shaft. The transmission gear is a combination type, which can adjust the reward and reward when the gear is worn out.
transmission:
With cone-type friction disc type continuously variable transmission, open the protective cover on the power side of the cross cutter, and you can see the whole picture and carry out maintenance inspections. The role of the transmission changes the cutting length. When the continuously variable transmission ratio is adjusted to a certain value, the cutting length becomes a fixed value. Whether the driving speed increases or decreases, the cutting length does not change, ie, it is not affected by the feeding speed. .
Two limit switches are installed on the cross beam of the shift arm, and the limit switch works when the speed-regulating motor drives the cone friction disc to the lowest point. Do not use beyond the speed range.
Double crank instantaneous speed regulation mechanism:
The instantaneous speed-regulating mechanism changes the constant-speed circular motion of the tool shaft into a non-uniform circular motion through the double-crank relationship, so that the instantaneous paper cutting speed of the tool shaft can be adjusted to be equal to the paper-feeding speed of the paper board. For example, when the short paper is rotated, the spindle speed increases. At this time, the cutting speed will increase the paper feed speed. When the long paper is cut, the spindle speed will slow down. At this time, the cutting speed will be smaller than the feeding speed. Therefore, the back knife cuts. When the short paper is moved, the slider moves down to speed up the cutting speed; when cutting the long paper, sliding it up moves the paper cutting speed slower. The slider moves up when the front blade cuts the short paper and moves downward when cutting the long paper.
Instantaneous cutting speed should always be corrected according to the orderliness of the cutting edge of the paperboard. A limit switch is placed on the indication lever of the operation side of the cutting machine. When the slider of the crank reaches the highest or lowest position, the limit switch works.
The adjustment of the instantaneous speed should be carried out at a driving speed of not less than 25m/s. No parking adjustments.
Engaging roller:
Each pair of arbors has a pair of infeed rollers in front. The infeed roller has a faster line speed than the feed speed, so its function is to correct the tension between the double-sided machine and the cross-cutting machine. Suddenly it is tight and tight. The infeed roller is equipped with a counterweight to adjust the pressure on the board. The position of the counterweight can be adjusted.
Feed tray:
The feed tray is divided into upper and lower layers. The feed roller speed is slightly faster than the feed speed so that the cut cardboards prevent each other from overlapping interference.
A paperboard brake pad is installed on the paper feeding rack to prevent the paperboard from being disarranged after being cut off, and the brake pad can adjust the pressure with the change of cutting length.
Adjust knife:
The two blades are pressed on the cutter shaft with a pressure plate, and the gap size between the blades affects the cutting quality. The gap is too large cardboard can not be cut, it is best to adjust to 0.02 ~ 0.03mm as well. However, the size of the gap is also not good. At this time, the two blades easily hit the blade.
When adjusting the knife, if the clearance is too large, you can first adjust the rotation of a knife shaft around its own axis. If you loosen the screw 1, the screw 1 and the screw 1 play a role in the pin 3 to produce a gap. At this time, tighten the screw 2, then the cutting edge Rotate clockwise. Instead, loosen the screw 2 first, and tighten the screw 1 so that the knife shaft rotates counterclockwise. Due to the rotation of the cutter shaft, the gap between the upper and lower cutter shaft blades can be changed. However, it should be noted that the gears at both ends of the cutter shaft should be adjusted to be a single-piece cutter, because the gear is a two-piece combination and the cutter does not function as a cutter. The double-set gear is used to wear gears. After adjusting the gap clearance. The drive shaft is a single piece gear shaft.
Use a rotary arbor to change the tip clearance during coarse adjustment. Fine adjustment is to adjust the relative position of the blade and the knife shaft. It has been described above that the blade is pressed on the knife shaft through a row of screws with a pressure plate, and a top wire between each two screws is used for the top blade. If there is a gap in the tip of a certain segment, the compression screw is loosened and the tip wire is pulled, so that the blade part and the cutter shaft generate a relative displacement, thereby achieving the purpose of fine tuning. Fine-tuning is best to start from the end of the blade, step by step gradually transferred to the other end, and can be cut with thin paper (newspaper) test can be cut, where the cut can also be part of the paper adjustment. When the knife is adjusted, the shaft is manually rotated, and the rotation speed is very slow and slow.
Sharpening knife:
Sharp edges should always be maintained to achieve good cutting results. Grinding tools are conditional on the use of grinders. Unconditional grinding can be done with an oil grindstone. And ensure that the blades are on the same line. The blade should be properly fixed when the knife is worn.
Operational notes:
Changing the cutting length or adjusting the instantaneous speed should be carried out under the operation of the machine. The operating speed is not lower than 25mm/min. Otherwise, the continuously variable transmission and the instantaneous speed-regulating mechanism will be damaged. Pay special attention to this.
When changing the cutting length, you can manually (adjust the length and instantaneous speed) or automatically (changing the cutting length and instantaneous speed at the same time), but be aware that some ranges should correct the instantaneous speed after changing the cutting length.
The spline shaft of the transmission must not be lubricated too much. When it is too large, the oil will splash on the conical friction disc and the conveyor belt, causing slippage resulting in poor cutting length.
Lubrication, always check the oil cup, the oil in the cup is full of oil, in order to check whether the oil is injected into the bearing, you can remove the cup to see if the oil out of the hole.
To check whether the crankshaft of the instantaneous speed-regulating mechanism is immersed in oil, always check that the oil tank is filled with oil.
Cutting speed limit:
The cardboard cut-off length and the maximum allowable speed when starting up should be as follows:
Third, the prospects of the cutting machine transformation This cutting machine is all mechanical transmission, so maintenance is more troublesome, cardboard cutting edge is not ideal, the error is larger (up to 20mm), causing great losses, now the most advanced or imported The same type of equipment is controlled by a computer. The main benefits are: 1 easy to operate; 2 to ensure quality; 3 cut accurate; can achieve better economic benefits, the error is only 2mm, equivalent to one-tenth of mechanical transmission. (Zhuhai Huafeng Group Chen Kuncai)
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