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Packaging Machinery Co., Ltd. Carton Machinery Branch is engaged in research and development of corrugated board production line and automatic printing slotting machine and carton machinery and equipment for more than ten years, and won many awards.
A few questions.
Determine the corrugated specifications in your products: Domestic corrugated board specifications mainly include: A, B, C, D, EK, which respectively indicate: Which type of cardboard is determined in the carton in your product: corrugated cardboard can be divided into single-sided corrugated Cardboard (two-layer corrugated cardboard), three-layer corrugated cardboard, five-layer corrugated cardboard, and seven-layer corrugated cardboard. As shown. Generally, five-layer corrugated cardboard can be A-B or B-C combination, or A-E, B-E combination. The seven-layer corrugated determines the carton type and size of the seven-layer cardboard corrugated cardboard type in your product. 1 side paper 2 - corrugated core paper 3 - inner paper 4 core paper commonly used carton box type: flat mouth carton, ie international carton type In the 0201 type; the junction carton, that is, the 2002 type in the international carton type; the large carton, that is, the 0203 type in the international carton type.
Determining the Yield of Your Product After determining your product specifications, you can calculate the output you need based on the type of carton, the type of paperboard, and the amount of production. The unit of output can be square meters/year, long rice, and the like.
After the above factors are basically determined, the carton equipment can be selected.
If you don't have a little confidence in your business before investing, the investment risk will be very large, which will easily lead to investment waste or investment failure.
Below we will discuss the issues to be noted in the selection of equipment according to the above three types of investment.
1 The basic investment corrugated box can be divided into the front production process and the downstream production process. The front production process refers to making corrugated cardboard, that is, forming three-layer corrugated cardboard and five-layer corrugated cardboard with the required specifications. The post-production process refers to printing, slitting, indentation, and ordering on cardboard.
It is necessary to select a single-face corrugated board production line in the previous production process. In the past, the new carton factory only considered the investment amount when investing in equipment, and all of them used manual production of single machine, which is not advisable. The quality of the produced cardboard is unstable due to the manual processing technology. Although this paperboard is available, the quality is low. The corrugated medium paper produced by the manual single machine is completely glued to the core paper or the inner paper through the intermediate conveying environment to the next process. In the process, the standard height and the tooth pitch of the corrugated have changed, which seriously affects the quality of the cardboard. The single-faced corrugated cardboard produced by the single-sided machine solves this problem. As shown in the figure, since the corrugated medium paper is glued to the inner paper or the facial paper at the same time, the standard tooth height and the tooth of the corrugated fiber are ensured. spacing.
The single-faced corrugated board production line mainly consists of three machines, a paper-feeding frame, a single-sided machine and a cross-cutting machine. When investing, determine the following factors: Determine the tooth profile of the single-face corrugated board production line, that is, determine the tooth shape according to your product requirements.
Determine the width of the line, which is the width of the carton you produce.
After the single-sided machine is determined, select another single machine. Generally, it should be considered to be able to make five layers of corrugated cardboard after selecting equipment. There are many combinations of equipments, for example: the front road: a corrugated board production line, a single-knife cross-cutting machine, a paper machine, a gluing machine, and a paste machine.
After the road: two-color water-based printing machine (or monochrome) one cut, indentation, chamfering, slotting machine, a number of sets of boxing machine (top left and right).
If the funds are insufficient, the process can be selected as follows: After the process: two-color water-based printing machine (or monochrome), one-point cutting, creasing machine, one-line machine, one-four-knife machine, one book-making machine (three or so) .
The above-mentioned single-machine equipment needs to pay attention to the following problems: the overall processing precision of the two-color printing machine, especially the processing quality of the printing roller, and the printing quality and precision after printing.
The processing precision of the rubber roller on the glue machine (requires grinding, preferably chrome plating), the diameter of the rubber roller is required to be large, which is advantageous for sizing.
The spindle of the quadruple knife is required to be large.
Factors such as productivity and door width match the output.
If the investment funds are insufficient, you can consider doing the front or the back, so that the investment amount can be halved.
2 Scale investment type This investment scale can directly select the corrugated board production line, which guarantees the quality of corrugated board in the process. The domestic corrugated board production line has a width of 1600mm, 1800mm, 20(1) and 2200mm. The production line is divided into a production line with a corrugated cardboard and a corrugated cardboard production line without a guide. The main difference between them is that the quality of corrugated board produced by the non-guide chopped corrugated board production line is better than that of the chopped board corrugated board production line. The lower corrugating roller with the claw corrugating machine is provided with dozens of guide sheets in the longitudinal direction of the shaft, which on the one hand serves as a paper guiding function, on the other hand prevents the corrugated core paper from being removed by the centrifugal force of the corrugating roller when the corrugating machine rotates at a high speed. The corrugated roller causes a defective product. Because the production speed of the guide claw corrugating machine is limited, the adjustment of the paper guide board is very difficult, so it has been limited in the application of the production line, for example. The guideless corrugating machine overcomes the above shortcomings. The lower corrugating roller adopts the principle of vacuum adsorption. When the corrugating roller is running at high speed, the corrugated core paper is always closely attached to the corrugating roller in the corrugating roller, and when the corrugating roller is finished, The lower corrugating roller adopts the principle of blowing, so that the corrugated paper is quickly disengaged from the corrugating roller. It is conceivable that the corrugated tooth type produced by the non-guide claw corrugating machine is closer to the corrugating roller than the toothed type produced by the guiding claw corrugating machine. Shape, which means more in line with the standard, corrugated cardboard has better physical properties.
1 one upper corrugating roller 2 one corrugating roller 3 - pressure roller 4 - a pasting roller 5 - a regulating roller 6 - a paper guide 7 - a plate 8 is a device with a guide claw and a non-guide claw corrugated cardboard production line: The equipment of the five-layer production line of the corrugated cardboard corrugated board is: there are guide vane corrugated machine 2 sets of one hydraulic paper rack 5 sets of paper carts 10 sets of bridges 1 set of one preheater 2 sets of one pretreatment machine 2 sets of 1st and 2nd layers Preheating machine 1 set one fine machine 1 set one double side machine 1 set one total shaft drive 1 set one slitting paper guide table 1 set one slitting machine 1 set one cross cutting paper lead table 1 one cross cutting machine 2 Taiwan 1 output rack 1 set of automatic stacking machine 1 set of a paste machine 1 set of a control system 1 set.
If the investment funds are difficult, the hydraulic paper storage rack can be changed to a mechanical paper storage rack, and the paper storage rack can be reduced from five to three, and the automatic stacking machine can be simplified.
The speed of the corrugated cardboard production line has three speeds of 8Ch/min and five layers of 5 (00. The annual production capacity is about 11 million square meters of cardboard (with an average speed of 1800mm and a speed of 65/1*, 6 hours per day, 270 days per year). It should be noted that the selection of the corrugated cardboard production line should be noted: in principle, the form of the paper-loading frame should not be used with a shaft-type paper holder, which is very inconvenient because the shaft is to be inserted into the original paper core.
Pay attention to the cylinder diameter of the preheater and the pretreatment machine, including the diameter of the preheating roller in the corrugating machine and the paste machine, and choose a larger one, so it has more production potential. Also pay attention to their structure, such as whether the wrap angle is adjustable, manual or maneuverable.
In the corrugating machine, special attention should be paid to the size of the corrugating roller, the processing quality, the basic hardness and the hardness of the surface layer.
The number and size of the flat dryers of the double-sided machine, that is, the length of the heating portion and the length of the cooling portion. The length of the heating section and the length of the cooling section should be chosen as much as possible, so that the production potential is greater.
The slitter should pay attention to its knife group, whether it is a group of knives or two sets of knives. The second set of knives is conducive to changing specifications, which can save the adjustment time of the whole machine.
The cross-cutting machine should pay attention to its long adjustment range to see if it can meet the maximum specifications of the product.
The length of the production site is at least 5 meters longer than the length of the production line, and the area is at least 3 times the floor space of the production line.
The boiler needs to use more than 3 tons of boilers, and the equipment with at least five-layer production line of pressure-free corrugated cardboard is: no guide claw corrugated machine, 2 sets of hydraulic paper-loading racks, 5 sets of paper carts, 10 sets of bridges, 1 set of preheating. Machine 2 sets of a pretreatment machine 2 sets of one and three layers of preheating machine 1 set of a paste machine 1 set of a double-sided machine 1 set of a total shaft drive 1 set of a vertical cut-off paper table 1 set of a thin knife slitting machine 1 set A cross-cutting paper-making table 1 computer-cross-cutting machine 2 sets one output rack 1 set one automatic stacking machine 1 set one paste machine 1 set one waste side processing machine 1 set one electrical control 1 set.
The speed of the guideless corrugated board production line is three layers 11 (Vmin, five layers of 80 m / min. The production capacity is about 15 million square meters per year.
Since the production capacity of the corrugated cardboard production line without the claws is higher than that of the production line with the corrugated cardboard, the automation of the entire production line is also high. The production line is equipped with a computer cross-cutting machine and a thin film slitting machine to make the entire production line. The quality of the carton that came out has been greatly improved.
The following matters should be considered in the selection of the corrugated cardboard production line without the claws. In addition to the (8) described in the corrugated board production line, there are also factors to be considered: the vacuum type of the corrugating machine has a suction type and an external suction type. It is recommended to use the system.
The diameter of the dryer of the three-layer preheater should be greater than 550mm. The number of dryers for the double-sided machine should be greater than 18.
The pulping capacity of the paste machine should meet the maximum speed of the production line.
Due to the advanced nature of the production line without the claws corrugated board, the equipment selection is very different from the production line of the corrugated board with the guide claws, so the investment price can differ by 800,000 to 1 million.
The rear-end equipment matched with the production line generally needs to adopt a full-automatic printing, a chamfering slotting machine or a full-automatic printing and die-cutting machine with a relatively wide door width and a relatively high production speed. The door widths of the fully automatic printing and printing machine are: 2500mm and 3000mm. The printing color group has two colors, three colors and four colors. The number of machine widths and color groups can be selected according to the product requirements.
The main considerations when choosing a printing grooving machine are: the material of the anilox roll has a common roll and a ceramic roll, and the ceramic roll has a better printing effect, but the investment price is much higher.
The number of mesh rolls, the number of mesh rolls is one of the main factors affecting the printing effect, the general mesh should be greater than 165 lines / square inch.
The manufacturing precision of the whole machine is high, and all the adjustment shafts should be chrome-plated and finely ground.
Slotting knife and slitting knife station adjustment requirements are flexible, convenient and automatic.
The connection between the machine feed unit, each printing unit, the chamfered groove portion, and the die-cut portion is preferably modular, which is conducive to the continuous improvement of the machine function in the future.
3 equipment transformation investment type Because investors have a good understanding of the carton production process, they are very aware of the advantages and disadvantages of the equipment in their production, which is very beneficial to the selection of equipment.
Investment is divided into equipment renewal or equipment transformation.
Equipment upgrades can be considered from front and rear equipment, selecting production lines or printing grooving machines or printing die-cutting units. The main points are the same as above.
3.1 Investment thin knife machine, thin knife machine is another new type of popular cutting and creasing machine which has just been listed in the past two years. Because the thin knife machine completely solves the problem that the cardboard is crushed during slitting. phenomenon. Not only has the quality of the carton been greatly improved, but more importantly, it can reduce the difficulty of paper feeding caused by the crushing of the cardboard during the slitting in the automatic printing and grooving machine in the subsequent process. Cardboard scrapping phenomenon. Users can get a good return by investing in the machine. The problems that should be paid attention to when selecting this machine are: () Inserting the machine in the original production line or replacing the original slitting machine, mainly considering whether the total shaft drive changes.
The wear resistance of the blade in the thin knife machine, whether the position adjustment of the thin knife is convenient, whether there is cooling measures, etc.
Whether the width of the thin knife machine matches the original production line.
After the machine is inserted or replaced, it does not affect the overall operation of the production line.
3.2 Investment computer cross-cutting machine, computer cross-cutting machine overcomes the slow speed of mechanical cross-cutting machine switching specifications, affects the overall speed of the production line and other undesirable factors, and improves the cross-cutting precision and the overall performance of the production line.
The problems that should be paid attention to when selecting the machine are: inserting the machine in the original production line or replacing the original mechanical cross-cutting machine, it is necessary to consider whether the transmission of the main shaft changes.
Consider whether the specifications of the computer cross-cutting function can be preset and whether other parameters that can be set meet the requirements.
After the machine is inserted or replaced, it does not affect the overall operation of the production line.
3.3 Production line extension transformation On the basis of the original production line, the production line is extended. For example, a corrugating machine with a corrugated tooth shape different from that of the original production line, a paper feeding frame and related units can be added at the front end of the production line to make the processing performance of the original production line. For example, the paperboard that can be processed in the original production line is A-B type paperboard, and the BC and A-C type paperboard can be produced by adding the C-type corrugating machine production line. This transformation is beneficial to fully utilize energy to expand the business of producing carton.
3.4 The five-layer production line is transformed into a seven-layer production line. With the wide application of corrugated boxes in various industries, the application of the seven-layer carton is more and more extensive. If there is a carton production order, the original five-layer production line can be transformed into a seven-layer production line. In addition to 1 set of 2 and 2 sets of paper machine, plus 1 set of bridge, 1 set of preheater, 1 set of pretreatment machine, 3 layers of preheater plus layer, paste machine plus layer, double machine heat The department and the cold department are correspondingly lengthened.
3.5 Reconstruction of the rear line equipment of the production line If the model of the original printing slotting machine is modular, the color group can be arbitrarily added on the basis of the primary color group, or a set of die-cutting units can be added after the chamfering groove portion. Production functions are more complete.
In summary, regardless of the basic investment type, the scale investment type, or the equipment modification type of investment, the investment can only be mature after analyzing the situation wisely and objectively. We believe that with the further development of carton equipment, China's packaging industry will have a brighter future.
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