The details are the guarantee of all work quality. The quality of die-cut products is the quality of package forming and occupies a very important position in the quality of printed products. The printing and post-press processing requirements of cigarette packs in the industry are the most representative. The flattened die-cutting method has the most flexibility and low cost to contract most of the post-printing jobs.
Detail one: Die cutter version
1) steel knife, steel wire
The steel knife is divided into "hard knife" according to the material. The hardness of the blade and the blade is the same, both are 450HV and 525HV. The "soft knife" blade is soft and easy to bend. The blade is quenched and hardened. The hardness of the blade is 450HV and 525HV. It is 640HV. According to the shape of the blade, it is divided into:
Double-sided low-edge knife, suitable for general cardboard type die cutting with a thickness of 0.1mm to 0.5mm. Blades have low pressure and high endurance.
Double-sided peak knife, suitable for die-cutting of glass fiberboard, leather, rubber, corrugated and other materials with a thickness of 0.4mm to 1mm, requiring high pressure accuracy.
Single-faced low-cutting knife, suitable for die cutting of 0.3mm~0.5mm thick fiber mats, rubber materials and soft paper materials.
Single-sided high-edge knife, suitable for die-cutting of harder and thicker materials with a thickness of 0.4mm to 1mm.
The paper material die-cutting is generally selected blade "striped handle" steel knife, the incision has a mirror effect, smooth, no dust, the blade is stable and durable.
Steel wire is divided into round head line, double round head line, large head line, pointed line.
The formula for calculating the height of a normal die-cut plate is:
Steel Height - Die Cut Material Thickness - Correction Value = Steel Wire Height
The formula for calculating the height of the steel die-cutting plate is:
Steel knife height + correction value = steel wire height
Note: The correction value is determined according to different materials. Longer fiber papers are more tensile and can use higher steel wire, while more fragile papers have to reduce steel wire accordingly. The correction value is generally controlled at 0.05 to 0.1 mm.
When selecting steel knives and steel wires, it should be noted that steel knives and steel wires should have the following characteristics: 1 Steel treatment. If the steel is loose, the die cutter cannot withstand long-time die-cutting pressure; 2 the surface is decarburized. If there is no carbon treatment of the steel knife is easily broken when bent; 3 heat treatment. If the heat-treated steel knife does not have a long service life.
2) Plate making materials
1 Multi-layer plywood, generally made of birch and beech, the best quality is Finnish plate, uniform wood, high hardness, good flexibility, relatively low material cost. When the temperature and humidity change, the template will be slightly deformed, but it has little effect on the stability of the die-cutting dimension. It is suitable for short-, medium-, long-line production.
2 fiber plastic board, the material is glass fiber reinforced plastic. High production cost, the biggest feature is that in the case of significant changes in temperature and humidity will not be deformed, the product die-cutting size is stable, but the use of steel blades, steel wire, indentation mold damage is multi-layer glued wood 2 More than times. Applicable to the production of long-term products.
3 sandwich plate, steel plate up and down, the middle of the structure filled with synthetic plastic. The board has a high manufacturing cost, and will not be deformed even when the temperature and humidity are significantly changed. The die-cutting dimension of the product is stable, and the supporting bottom mold is also a steel material. The precision of the steel wire and the indentation mold is high, but the use is high. The damage to steel knives and steel wires is more than 3 times that of multi-layer plywood, which is suitable for the production of long-term products.
3) Strips
The standard selection criteria for flattened cigarette label paper type cutting strips is: when the spacing between steel blades is greater than 12mm, an open sponge strip with a Shore hardness of 35 degrees is selected; when the distance between the steel blade and the steel wire is less than 12mm, the Choose a solid rubber strip with a Shore hardness of 70 degrees or an open dense sponge strip with a Shore hardness of 45 degrees. When the distance between steel blades is less than 8 mm, select a closed foam strip with a hardness of 55 degrees Shore hardness. The rubber strip should be 1.2mm higher than the steel blade and 1mm from the steel blade (if the height of the strip is less than 1mm higher than the steel blade, replace the strip as soon as possible), and the width of the strip should be equal to the height.
4) Preservation of multilayer glued wood version
Multi-layer glue wood knife plate manufacturers have been long-term storage of wood before production to ensure the stability of the board, but because of the company's geographical location and storage space conditions and the knife factory are different, the wooden knife plate will appear slightly deformed , so the new production of wooden knife plate is best placed in the die-cutting equipment for more than 24h, and then on the machine, which can stabilize the die-cut shape and size. After use, the knife plate shall be placed vertically and wrapped with plastic wrap. The temperature and humidity of the storage place shall be consistent with the temperature and humidity around the die cutting equipment.
Detail II: Indentation Die
1) Process calculation method of indentation bottom mold
Indentation groove depth = paper
thickness of
Indentation groove width = paper thickness × 1.5 + steel wire thickness
Corrugated paper crease width = compressed paper thickness × 2.0 + steel wire thickness
(It can be fine-tuned depending on the paper and the need for packaging.)
2) Characteristics and Types of Indentation Molding Materials
Composite paper die. With the use of multi-layer plywood or fiber plastic plate, the composite paper mold has its own toughness, low pressure requirement for die-cut creasing, small damage to paper fiber, and good tolerance for deviation between steel wire and indentation mold. The wear of steel knives and steel wires is small, and the cost is low. The product package forming stability after die-cutting and indentation is poor, and the service life is generally 200,000 to 600,000 times, and the cost is low. Suitable for the production of short and midline products.
Steel mold. The metal indentation mold is used in combination with sandwich plates. The height requirement for the steel wire is different from that of other indentation molds. The damage to the paper fibers is very large. The product packaging after die-cutting and indentation is stable in shape, and the indentation mold will not be used for a long time. Deformation; but the wear of steel knives and steel wire is large, the position and pressure precision of die-cut indentation are required to be high, and the cost is high. Suitable for the production of long-term products.
Insulating synthetic fiber module. With the use of multi-layer glued wood board or fiber plastic plate, it can also be used with sandwich plate under the conditions of steel knife and steel wire modification (it is not recommended to use). Destruction of the paper fiber is large, the product packaging after die-cutting and indentation is stable, and the long-term use will not be deformed when the indentation mold and the steel wire are in good condition; but the edge of the indentation mold is easy to collapse and die-cut indentation position And the pressure accuracy is required to be high, and the service life is generally between 800,000 times and 1.6 million times and the cost is moderate. Suitable for the production of medium and long-term products.
The indentation mold is divided into four types according to the different positions: standard shape, ultra-narrow shape, unilateral narrow shape, and even pit shape.
1 Standard shape: used for wide distances on both sides of steel wire.
2 Ultra-narrow shape: used for the position where the steel wire and steel knife are close.
3 Unilateral narrow shape: used for the distance between the steel wire and the steel wire.
4 pit shape: used to match two or more indentation lines with an equal distance of 4mm or less.
According to the quantity of their own products and customer requirements to accurately customize the indentation mold, can effectively improve product quality and production efficiency.
Detail three: knife installation
1) The new version of the steel knife resets, the life of the indentation mold can be improved
Some steel knives are under great pressure when making "bottom-up graphics paper", but suddenly they make repeated cuts and make frequent cuts. When the whole plate fills the bottom, knife-edge adhesion often occurs; after the stamping die is used for a short period of time At the edge of the die, there is paper dust entering, and even indentation or mold wall collapse.
Analysis of the problem: The new knife version of the burr or burr is too tight, the steel knife does not return to position, in a few times after the steel knife to restore the position, so suddenly cut constantly; in the sticky indentation mold only when the mold groove Can be fully stressed with the floor, the groove is only the part of the edge of the steel knife pressed on the floor, the rubber layer is not enough force, it is easy to rebound.
Treatment method: Record the pressure after sticking the bottom mold, reduce the pressure by 0.05mm~0.1mm, fix the product on the bottom plate with a transparent plastic film, run the machine for 5~10min, let the steel knife reset, let the indentation mold layer Fully stressed. After cleaning the floor, use a little “502 glue†to seal the edge of the indentation mold, naturally dry for 15 minutes, and use 0# sandpaper to smooth the solidified “502 glueâ€, which can significantly improve the service life of the indentation mold.
2) The "fundamental" balance of the blade
The pressure from the mouth to the tip of the mouth is unbalanced, the mouth cut continuously, the dragging has been completely cut off, and the pressure of the mouth is repeatedly added. The key is that the effect of filling is not obvious, the more the adhesion problem is filled, the pressure pattern paper has been found to have 80 More than % has been compensated, even if the area near the mouth has been filled with 3 or 4 layers or not cut off.
Analysis of the problem: The general layout of the box has a positioning block block and block fixed knife plate, and drag the bolt and both sides are fixed by bolts, plate frame after the force, the part of the frame will have a number of protrusions, resulting in There is a gap between the knife plate and the plate frame, there is a buffer when the pressure is combined, and the pressure that affects the dragging pressure is not large.
Treatment method: From the back of the box, use the bolts to tighten the knife plate. Generally, 3 to 4 bolts are distributed and tightened to ensure the plane contact between the knife plate and the plate. (There are a lot of equipment frame is not such a hole, it is recommended that the frame technology change) in the pressure test found that the mouth is not cut off, drag slightly has been cut off, on the balance knife over pressure, until the mouth and After dragging it down, it is possible to press it properly and then start the other ones.
3) Make up the bottom of the graphic paper materials and make up tips
In the production, there will be frequent mild adhesions and burrs, and after the filling, there will be loose paper. Secondly, it is difficult to cut off where the steel knives and two or more steel wires meet, and there are many adhesions or burrs on the bottom. The last place where the steel knives are bent is to repeatedly fill the bottom, often to make up 3 or 4 layers, and the more the camber, the more it will make up.
Problem Analysis: Filling the bottom of the graphic paper material is not good, the material has its own compression space or hardness is not enough, the material shrinks and deforms after a long period of pressure, resulting in diminishing pressure and thus repeatedly fill the bottom; steel wire is shorter than the steel knife, but the steel wire and pressure The height of the steel wire will rise relative to the tracer, and the steel knife will relatively decrease. When the bottom is filled, the steel knife and the steel wire are close, the bottom is not clear, and the steel knife will also fill the steel at the same time. The line, so how to make up has adhesion or burrs; when the steel blade is bent, the height, hardness, and abrasion resistance of the blade at the bending point will decrease with the degree of bending, so it will be shorter than other places and wear faster than other places. More pressure.
Treatment method: The material used to make "bottom-up graphic paper" is characterized by thinness, small pressure gap, pressure resistance, and small shrinkage. It is mainly recommended to apply 90g/m2 copper plate paper or special material paper on one side. Do not have a lap joint at the bottom of the machete. At the beginning of the pressure compensation, the steel wire filling bottom pattern paper where the steel knife and the two or more steel wires meet is hollowed out, or the steel wire in this place is reduced by 0.05 mm more when a knife plate is required. When filling the bottom, the bent portion of the steel knife deliberately laps the backing paper to increase the height of the bending point.
Detail 4: The use of the blade
1) There is a requirement to change the steel knife
New steel knives that were only changed during production, were not damaged again several times after the steel knife was pressed, or the steel knives did not reach the normal service life.
Analysis of the problem: The old steel knife is worn out, the blade is relatively short compared to the new steel knife. When the new steel knife is replaced, there is no decompression. The life of the new steel knife after loading under heavy pressure must be greatly reduced, and the old steel knife The corresponding bottom plate position is also worn, which has a great influence on the life of the new steel knife.
Processing method: When replacing the steel knife, firstly replace the make-up paper corresponding to the bottom-up graphic paper, and then the corresponding bottom plate position is smoothed with 0# sand paper.
2) Note that the diecut will swell
In the normal production, there will be misalignment of the steel wire and the indentation mold, which will seriously cause the die wall of the indentation mold to collapse, and even indentation burst.
Problem Analysis: After a long time of pressure and multiple steel knife replacements, new wooden die-cutting plates will have steel blade slot wall wear, each steel blade slot wear 0.01mm, cumulative wear is very large, so will The appearance of the steel wire and the indentation mold is not completely coordinated, and if it is found that the mold wall collapses or the indentation cracks occur in time.
Treatment method: Observe the back of the product during each quality inspection. If any misalignment is found, dispose of it immediately. First, loosen the tension bolts on the back of the plate, loosen the lock nuts one by one, and reinforce the bolts around the frame one by one. The key is still the quality of the inspection, to do "three services," and prevent quality problems before they happen.
3) Temperature and humidity are the key to quality
In the normal production, a large area of ​​adhesion suddenly appears, or the paper is suddenly scattered, or the indentation bursts, or the indentation becomes lighter.
Problem Analysis: In normal operation, our equipment is a mechanical movement, the pressure is always the same, the normal template will not suddenly change, so these problems should be paper weight or temperature and humidity problems. Problems such as adhesion, loose paper, and indentation bursts are easy to find. Although some unqualified products may be caused, they can be prevented from flowing to customers. If the indentation becomes shallow, it will only be noticed when the customer forms a bad package on the machine. The loss is very large, so we cannot ignore this issue.
Processing method: we can only adjust the pressure, the speed will be the thickest paper, ensure product quality, and feedback paper suppliers. The temperature of the paper to be die-cut is +10 degrees Celsius or +15% change in humidity, which is obviously reflected in die-cutting. The temperature and humidity increase the paper absorbs moisture, the paper increases the toughness and the adhesion occurs, and the temperature and humidity drop the paper to release moisture. Paper becomes brittle and loose paper appears. The only way to solve this problem is to install a temperature and humidity meter and install a temperature and humidity control device in the paper storage space so that the temperature and humidity around the paper and equipment before die cutting can be maintained.
Conclusion
With the flow of talents and the liberation of thinking, the general direction of technology is no longer a secret. The quality of the packaging of die-cutting products is only a change in some details. Considering the details and people who pay attention to details, they not only treat the work seriously. Doing small things in detail, and focusing on finding opportunities in the details of doing things, this kind of person can go to the road to success, understand that controlling such details is the guarantee of product quality stability.
Detail one: Die cutter version
1) steel knife, steel wire
The steel knife is divided into "hard knife" according to the material. The hardness of the blade and the blade is the same, both are 450HV and 525HV. The "soft knife" blade is soft and easy to bend. The blade is quenched and hardened. The hardness of the blade is 450HV and 525HV. It is 640HV. According to the shape of the blade, it is divided into:
Double-sided low-edge knife, suitable for general cardboard type die cutting with a thickness of 0.1mm to 0.5mm. Blades have low pressure and high endurance.
Double-sided peak knife, suitable for die-cutting of glass fiberboard, leather, rubber, corrugated and other materials with a thickness of 0.4mm to 1mm, requiring high pressure accuracy.
Single-faced low-cutting knife, suitable for die cutting of 0.3mm~0.5mm thick fiber mats, rubber materials and soft paper materials.
Single-sided high-edge knife, suitable for die-cutting of harder and thicker materials with a thickness of 0.4mm to 1mm.
The paper material die-cutting is generally selected blade "striped handle" steel knife, the incision has a mirror effect, smooth, no dust, the blade is stable and durable.
Steel wire is divided into round head line, double round head line, large head line, pointed line.
The formula for calculating the height of a normal die-cut plate is:
Steel Height - Die Cut Material Thickness - Correction Value = Steel Wire Height
The formula for calculating the height of the steel die-cutting plate is:
Steel knife height + correction value = steel wire height
Note: The correction value is determined according to different materials. Longer fiber papers are more tensile and can use higher steel wire, while more fragile papers have to reduce steel wire accordingly. The correction value is generally controlled at 0.05 to 0.1 mm.
When selecting steel knives and steel wires, it should be noted that steel knives and steel wires should have the following characteristics: 1 Steel treatment. If the steel is loose, the die cutter cannot withstand long-time die-cutting pressure; 2 the surface is decarburized. If there is no carbon treatment of the steel knife is easily broken when bent; 3 heat treatment. If the heat-treated steel knife does not have a long service life.
2) Plate making materials
1 Multi-layer plywood, generally made of birch and beech, the best quality is Finnish plate, uniform wood, high hardness, good flexibility, relatively low material cost. When the temperature and humidity change, the template will be slightly deformed, but it has little effect on the stability of the die-cutting dimension. It is suitable for short-, medium-, long-line production.
2 fiber plastic board, the material is glass fiber reinforced plastic. High production cost, the biggest feature is that in the case of significant changes in temperature and humidity will not be deformed, the product die-cutting size is stable, but the use of steel blades, steel wire, indentation mold damage is multi-layer glued wood 2 More than times. Applicable to the production of long-term products.
3 sandwich plate, steel plate up and down, the middle of the structure filled with synthetic plastic. The board has a high manufacturing cost, and will not be deformed even when the temperature and humidity are significantly changed. The die-cutting dimension of the product is stable, and the supporting bottom mold is also a steel material. The precision of the steel wire and the indentation mold is high, but the use is high. The damage to steel knives and steel wires is more than 3 times that of multi-layer plywood, which is suitable for the production of long-term products.
3) Strips
The standard selection criteria for flattened cigarette label paper type cutting strips is: when the spacing between steel blades is greater than 12mm, an open sponge strip with a Shore hardness of 35 degrees is selected; when the distance between the steel blade and the steel wire is less than 12mm, the Choose a solid rubber strip with a Shore hardness of 70 degrees or an open dense sponge strip with a Shore hardness of 45 degrees. When the distance between steel blades is less than 8 mm, select a closed foam strip with a hardness of 55 degrees Shore hardness. The rubber strip should be 1.2mm higher than the steel blade and 1mm from the steel blade (if the height of the strip is less than 1mm higher than the steel blade, replace the strip as soon as possible), and the width of the strip should be equal to the height.
4) Preservation of multilayer glued wood version
Multi-layer glue wood knife plate manufacturers have been long-term storage of wood before production to ensure the stability of the board, but because of the company's geographical location and storage space conditions and the knife factory are different, the wooden knife plate will appear slightly deformed , so the new production of wooden knife plate is best placed in the die-cutting equipment for more than 24h, and then on the machine, which can stabilize the die-cut shape and size. After use, the knife plate shall be placed vertically and wrapped with plastic wrap. The temperature and humidity of the storage place shall be consistent with the temperature and humidity around the die cutting equipment.
Detail II: Indentation Die
1) Process calculation method of indentation bottom mold
Indentation groove depth = paper
thickness of
Indentation groove width = paper thickness × 1.5 + steel wire thickness
Corrugated paper crease width = compressed paper thickness × 2.0 + steel wire thickness
(It can be fine-tuned depending on the paper and the need for packaging.)
2) Characteristics and Types of Indentation Molding Materials
Composite paper die. With the use of multi-layer plywood or fiber plastic plate, the composite paper mold has its own toughness, low pressure requirement for die-cut creasing, small damage to paper fiber, and good tolerance for deviation between steel wire and indentation mold. The wear of steel knives and steel wires is small, and the cost is low. The product package forming stability after die-cutting and indentation is poor, and the service life is generally 200,000 to 600,000 times, and the cost is low. Suitable for the production of short and midline products.
Steel mold. The metal indentation mold is used in combination with sandwich plates. The height requirement for the steel wire is different from that of other indentation molds. The damage to the paper fibers is very large. The product packaging after die-cutting and indentation is stable in shape, and the indentation mold will not be used for a long time. Deformation; but the wear of steel knives and steel wire is large, the position and pressure precision of die-cut indentation are required to be high, and the cost is high. Suitable for the production of long-term products.
Insulating synthetic fiber module. With the use of multi-layer glued wood board or fiber plastic plate, it can also be used with sandwich plate under the conditions of steel knife and steel wire modification (it is not recommended to use). Destruction of the paper fiber is large, the product packaging after die-cutting and indentation is stable, and the long-term use will not be deformed when the indentation mold and the steel wire are in good condition; but the edge of the indentation mold is easy to collapse and die-cut indentation position And the pressure accuracy is required to be high, and the service life is generally between 800,000 times and 1.6 million times and the cost is moderate. Suitable for the production of medium and long-term products.
The indentation mold is divided into four types according to the different positions: standard shape, ultra-narrow shape, unilateral narrow shape, and even pit shape.
1 Standard shape: used for wide distances on both sides of steel wire.
2 Ultra-narrow shape: used for the position where the steel wire and steel knife are close.
3 Unilateral narrow shape: used for the distance between the steel wire and the steel wire.
4 pit shape: used to match two or more indentation lines with an equal distance of 4mm or less.
According to the quantity of their own products and customer requirements to accurately customize the indentation mold, can effectively improve product quality and production efficiency.
Detail three: knife installation
1) The new version of the steel knife resets, the life of the indentation mold can be improved
Some steel knives are under great pressure when making "bottom-up graphics paper", but suddenly they make repeated cuts and make frequent cuts. When the whole plate fills the bottom, knife-edge adhesion often occurs; after the stamping die is used for a short period of time At the edge of the die, there is paper dust entering, and even indentation or mold wall collapse.
Analysis of the problem: The new knife version of the burr or burr is too tight, the steel knife does not return to position, in a few times after the steel knife to restore the position, so suddenly cut constantly; in the sticky indentation mold only when the mold groove Can be fully stressed with the floor, the groove is only the part of the edge of the steel knife pressed on the floor, the rubber layer is not enough force, it is easy to rebound.
Treatment method: Record the pressure after sticking the bottom mold, reduce the pressure by 0.05mm~0.1mm, fix the product on the bottom plate with a transparent plastic film, run the machine for 5~10min, let the steel knife reset, let the indentation mold layer Fully stressed. After cleaning the floor, use a little “502 glue†to seal the edge of the indentation mold, naturally dry for 15 minutes, and use 0# sandpaper to smooth the solidified “502 glueâ€, which can significantly improve the service life of the indentation mold.
2) The "fundamental" balance of the blade
The pressure from the mouth to the tip of the mouth is unbalanced, the mouth cut continuously, the dragging has been completely cut off, and the pressure of the mouth is repeatedly added. The key is that the effect of filling is not obvious, the more the adhesion problem is filled, the pressure pattern paper has been found to have 80 More than % has been compensated, even if the area near the mouth has been filled with 3 or 4 layers or not cut off.
Analysis of the problem: The general layout of the box has a positioning block block and block fixed knife plate, and drag the bolt and both sides are fixed by bolts, plate frame after the force, the part of the frame will have a number of protrusions, resulting in There is a gap between the knife plate and the plate frame, there is a buffer when the pressure is combined, and the pressure that affects the dragging pressure is not large.
Treatment method: From the back of the box, use the bolts to tighten the knife plate. Generally, 3 to 4 bolts are distributed and tightened to ensure the plane contact between the knife plate and the plate. (There are a lot of equipment frame is not such a hole, it is recommended that the frame technology change) in the pressure test found that the mouth is not cut off, drag slightly has been cut off, on the balance knife over pressure, until the mouth and After dragging it down, it is possible to press it properly and then start the other ones.
3) Make up the bottom of the graphic paper materials and make up tips
In the production, there will be frequent mild adhesions and burrs, and after the filling, there will be loose paper. Secondly, it is difficult to cut off where the steel knives and two or more steel wires meet, and there are many adhesions or burrs on the bottom. The last place where the steel knives are bent is to repeatedly fill the bottom, often to make up 3 or 4 layers, and the more the camber, the more it will make up.
Problem Analysis: Filling the bottom of the graphic paper material is not good, the material has its own compression space or hardness is not enough, the material shrinks and deforms after a long period of pressure, resulting in diminishing pressure and thus repeatedly fill the bottom; steel wire is shorter than the steel knife, but the steel wire and pressure The height of the steel wire will rise relative to the tracer, and the steel knife will relatively decrease. When the bottom is filled, the steel knife and the steel wire are close, the bottom is not clear, and the steel knife will also fill the steel at the same time. The line, so how to make up has adhesion or burrs; when the steel blade is bent, the height, hardness, and abrasion resistance of the blade at the bending point will decrease with the degree of bending, so it will be shorter than other places and wear faster than other places. More pressure.
Treatment method: The material used to make "bottom-up graphic paper" is characterized by thinness, small pressure gap, pressure resistance, and small shrinkage. It is mainly recommended to apply 90g/m2 copper plate paper or special material paper on one side. Do not have a lap joint at the bottom of the machete. At the beginning of the pressure compensation, the steel wire filling bottom pattern paper where the steel knife and the two or more steel wires meet is hollowed out, or the steel wire in this place is reduced by 0.05 mm more when a knife plate is required. When filling the bottom, the bent portion of the steel knife deliberately laps the backing paper to increase the height of the bending point.
Detail 4: The use of the blade
1) There is a requirement to change the steel knife
New steel knives that were only changed during production, were not damaged again several times after the steel knife was pressed, or the steel knives did not reach the normal service life.
Analysis of the problem: The old steel knife is worn out, the blade is relatively short compared to the new steel knife. When the new steel knife is replaced, there is no decompression. The life of the new steel knife after loading under heavy pressure must be greatly reduced, and the old steel knife The corresponding bottom plate position is also worn, which has a great influence on the life of the new steel knife.
Processing method: When replacing the steel knife, firstly replace the make-up paper corresponding to the bottom-up graphic paper, and then the corresponding bottom plate position is smoothed with 0# sand paper.
2) Note that the diecut will swell
In the normal production, there will be misalignment of the steel wire and the indentation mold, which will seriously cause the die wall of the indentation mold to collapse, and even indentation burst.
Problem Analysis: After a long time of pressure and multiple steel knife replacements, new wooden die-cutting plates will have steel blade slot wall wear, each steel blade slot wear 0.01mm, cumulative wear is very large, so will The appearance of the steel wire and the indentation mold is not completely coordinated, and if it is found that the mold wall collapses or the indentation cracks occur in time.
Treatment method: Observe the back of the product during each quality inspection. If any misalignment is found, dispose of it immediately. First, loosen the tension bolts on the back of the plate, loosen the lock nuts one by one, and reinforce the bolts around the frame one by one. The key is still the quality of the inspection, to do "three services," and prevent quality problems before they happen.
3) Temperature and humidity are the key to quality
In the normal production, a large area of ​​adhesion suddenly appears, or the paper is suddenly scattered, or the indentation bursts, or the indentation becomes lighter.
Problem Analysis: In normal operation, our equipment is a mechanical movement, the pressure is always the same, the normal template will not suddenly change, so these problems should be paper weight or temperature and humidity problems. Problems such as adhesion, loose paper, and indentation bursts are easy to find. Although some unqualified products may be caused, they can be prevented from flowing to customers. If the indentation becomes shallow, it will only be noticed when the customer forms a bad package on the machine. The loss is very large, so we cannot ignore this issue.
Processing method: we can only adjust the pressure, the speed will be the thickest paper, ensure product quality, and feedback paper suppliers. The temperature of the paper to be die-cut is +10 degrees Celsius or +15% change in humidity, which is obviously reflected in die-cutting. The temperature and humidity increase the paper absorbs moisture, the paper increases the toughness and the adhesion occurs, and the temperature and humidity drop the paper to release moisture. Paper becomes brittle and loose paper appears. The only way to solve this problem is to install a temperature and humidity meter and install a temperature and humidity control device in the paper storage space so that the temperature and humidity around the paper and equipment before die cutting can be maintained.
Conclusion
With the flow of talents and the liberation of thinking, the general direction of technology is no longer a secret. The quality of the packaging of die-cutting products is only a change in some details. Considering the details and people who pay attention to details, they not only treat the work seriously. Doing small things in detail, and focusing on finding opportunities in the details of doing things, this kind of person can go to the road to success, understand that controlling such details is the guarantee of product quality stability.
Sunroom can be divided into five development stages according to its materials and manufacturing methods: one is the sun room with pure wood structure, the other is the sun room with pure steel structure, the third is the sun room with aluminum Curtain Wall structure, and the fourth is the steel and aluminum structure. Sun room.
The balcony or terrace sun room is in the entire living room, so visual connectivity is very important. It needs to be considered in line with the overall style of the building, while the overall tone is as consistent as possible.
Sunroom
Winter Garden,Glass Sunroom,Aluminum Frame Sunroom,Aluminum Glass Room,Aluminium Green House
Lingyin Construction Materials LTD , https://www.lingyincn.com