I. Current status and comparison of the development of stone sawing machine processing equipment at home and abroad
In countries with advanced stone processing technologies such as Italy, the saw blades of the sawing machine are mostly supported by the two ends of the spindle. The saw blade supports the rigidity and the machining precision is high. Compared with the single-piece sawing machine, the combined sawing machine has obvious advantages in terms of processing efficiency, production cost and yield. Therefore, in Italy, Spain and other major European stone producing countries, the multi-saw sawing board supported by both sides is used. Single-piece saws can only be used as flat materials and are rarely used to process sheets.
The structure of domestic sawing machines is mostly single-piece saws, and the main shafts are cantilever type. This structure greatly limits the number and performance of the hangable saw blades, and the processing efficiency is low and the waste of resources is serious. At present, the southern market has gradually developed a single-arm combination saw, and the north is still dominated by a bridge-type single-piece saw. Therefore, an efficient multi-blade saw is widely available in the northern market.
At present, the domestic multi-chip saw is compared with the parameters of some foreign famous stone machinery similar products:
Through the comparison of the above data, it can be seen that the MZJ160/32 gantry type longitudinal sawing machine has the following advantages compared with similar foreign products:
1. Compared with the two models with the same Φ1600 in 32 pieces, the main motor has the smallest power, and the energy saving effect is obvious when the processing efficiency is similar.
2. The spindle mounting blade has the longest shaft length and can process 32 sheets of 20mm thick plates at the same time. Other manufacturers can only process 15mm thick.
3, the worktable has a long stroke, can install more blocks, saving shipping assistance time.
4, In addition, the price of this machine has an absolute advantage, the price is only about 220,000, and the price of these foreign models are more than 700,000.
With its remarkable advantages of high efficiency, low energy consumption, low cost and low price, multi-saw saws will gradually replace the sheet saw and become the mainstream sheet processing equipment.
Second, the development status and performance comparison of domestic mill equipment
First look at the comparison of the parameters of the various existing equipment in the table below:
In the production of granite plates, the grinding heads of the continuous grinding and polishing machines are all four-claw and six-claw grinding heads. The price of such grinding heads is generally high. The cheapest one for a four-claw grinding head is more than RMB 5,000. The price of six-claw grinding head is 8,000-10,000 yuan. The power used by each grinding head is 11KW～15KW, and the diameter of the grinding head is more than 400mm. This makes the whole mill model huge and the price is high. The price of a granite continuous grinding and polishing machine is 75~100. Ten thousand yuan, such a high price, hindered the technical transformation of some stone enterprises, and at the same time restricted the optimization of equipment purchase funds for some new stone enterprises.
The use of hand-held grinding and polishing machines is low in price and is very practical in the early stage of the development of the stone industry with low labor costs. However, with the continuous development of China's economy, labor costs (including wages, various social insurance, corporate management fees, etc.) are also constantly increasing, which also increases the cost of production and use. The quality of processed plates is unstable and the surface is flat. To achieve a gloss of 85 degrees or more, the production efficiency is reduced to about 40 m2/day.
At present, many stone processing enterprises in China have used multi-head bridge grinding and polishing machines. The application of such grinding and polishing machines has greatly improved production efficiency, reduced labor costs and reduced labor intensity. The price of the six-headed bridge grinding and polishing machine is basically between 100,000 yuan and 120,000 yuan. Usually, a multi-head bridge grinding and polishing machine is used to process sheets of about 10 to 12 m2 per hour. However, the multi-head bridge grinding and polishing machine has insurmountable shortcomings: frequent replacement of the grinding discs; troublesome loading and unloading of the plates, adjustment of the strokes each time the plates are loaded; can not simultaneously process plates of different lengths; multi-piece combination sawing The thickness of the sheet is not uniform. When grinding with a multi-head bridge grinding and polishing machine, it is necessary to mill a pair of single sheets, which is time-consuming and labor-intensive.
From the above comparison can be seen:
1. Resin grinding disc Continuous grinding machine has very high efficiency, which is 1/2 of 16 continuous grinding machines, but the price of equipment is relatively low, only 1/4 of 16 continuous grinding machines.
2. Resin disc grinding disc is light in weight and consumes less power; the energy consumed for processing 1 square meter of sheet is only higher than that of hand-held grinder, and the power consumption is low.
3. Resin grinding disc continuous grinding machine uses resin disc abrasive and metal disc diamond abrasive, and the abrasive use cost is greatly reduced.
4. The resin grinding disc continuous grinding machine is a multi-head continuous feeding board with high efficiency and low labor cost.
The device not only saves labor, improves productivity, reduces labor intensity, and reduces the production cost of the plate, especially the uniform thickness of the plate produced, the flatness is high, the gloss is good; the price of the device is low, the ordinary user Can bear it. The advantages of the resin disc continuous mill in the field of grinding are gradually emerging. With the state's policy support for energy-saving and environmentally friendly products and the awareness of energy conservation and environmental protection in the stone industry, the domestic stone equipment industry is developing in an efficient and low-cost direction.
In countries with advanced stone processing technologies such as Italy, the saw blades of the sawing machine are mostly supported by the two ends of the spindle. The saw blade supports the rigidity and the machining precision is high. Compared with the single-piece sawing machine, the combined sawing machine has obvious advantages in terms of processing efficiency, production cost and yield. Therefore, in Italy, Spain and other major European stone producing countries, the multi-saw sawing board supported by both sides is used. Single-piece saws can only be used as flat materials and are rarely used to process sheets.
The structure of domestic sawing machines is mostly single-piece saws, and the main shafts are cantilever type. This structure greatly limits the number and performance of the hangable saw blades, and the processing efficiency is low and the waste of resources is serious. At present, the southern market has gradually developed a single-arm combination saw, and the north is still dominated by a bridge-type single-piece saw. Therefore, an efficient multi-blade saw is widely available in the northern market.
At present, the domestic multi-chip saw is compared with the parameters of some foreign famous stone machinery similar products:
Through the comparison of the above data, it can be seen that the MZJ160/32 gantry type longitudinal sawing machine has the following advantages compared with similar foreign products: 1. Compared with the two models with the same Φ1600 in 32 pieces, the main motor has the smallest power, and the energy saving effect is obvious when the processing efficiency is similar.
2. The spindle mounting blade has the longest shaft length and can process 32 sheets of 20mm thick plates at the same time. Other manufacturers can only process 15mm thick.
3, the worktable has a long stroke, can install more blocks, saving shipping assistance time.
4, In addition, the price of this machine has an absolute advantage, the price is only about 220,000, and the price of these foreign models are more than 700,000.
With its remarkable advantages of high efficiency, low energy consumption, low cost and low price, multi-saw saws will gradually replace the sheet saw and become the mainstream sheet processing equipment.
Second, the development status and performance comparison of domestic mill equipment
First look at the comparison of the parameters of the various existing equipment in the table below:
In the production of granite plates, the grinding heads of the continuous grinding and polishing machines are all four-claw and six-claw grinding heads. The price of such grinding heads is generally high. The cheapest one for a four-claw grinding head is more than RMB 5,000. The price of six-claw grinding head is 8,000-10,000 yuan. The power used by each grinding head is 11KW～15KW, and the diameter of the grinding head is more than 400mm. This makes the whole mill model huge and the price is high. The price of a granite continuous grinding and polishing machine is 75~100. Ten thousand yuan, such a high price, hindered the technical transformation of some stone enterprises, and at the same time restricted the optimization of equipment purchase funds for some new stone enterprises. The use of hand-held grinding and polishing machines is low in price and is very practical in the early stage of the development of the stone industry with low labor costs. However, with the continuous development of China's economy, labor costs (including wages, various social insurance, corporate management fees, etc.) are also constantly increasing, which also increases the cost of production and use. The quality of processed plates is unstable and the surface is flat. To achieve a gloss of 85 degrees or more, the production efficiency is reduced to about 40 m2/day.
At present, many stone processing enterprises in China have used multi-head bridge grinding and polishing machines. The application of such grinding and polishing machines has greatly improved production efficiency, reduced labor costs and reduced labor intensity. The price of the six-headed bridge grinding and polishing machine is basically between 100,000 yuan and 120,000 yuan. Usually, a multi-head bridge grinding and polishing machine is used to process sheets of about 10 to 12 m2 per hour. However, the multi-head bridge grinding and polishing machine has insurmountable shortcomings: frequent replacement of the grinding discs; troublesome loading and unloading of the plates, adjustment of the strokes each time the plates are loaded; can not simultaneously process plates of different lengths; multi-piece combination sawing The thickness of the sheet is not uniform. When grinding with a multi-head bridge grinding and polishing machine, it is necessary to mill a pair of single sheets, which is time-consuming and labor-intensive.
From the above comparison can be seen:
1. Resin grinding disc Continuous grinding machine has very high efficiency, which is 1/2 of 16 continuous grinding machines, but the price of equipment is relatively low, only 1/4 of 16 continuous grinding machines.
2. Resin disc grinding disc is light in weight and consumes less power; the energy consumed for processing 1 square meter of sheet is only higher than that of hand-held grinder, and the power consumption is low.
3. Resin grinding disc continuous grinding machine uses resin disc abrasive and metal disc diamond abrasive, and the abrasive use cost is greatly reduced.
4. The resin grinding disc continuous grinding machine is a multi-head continuous feeding board with high efficiency and low labor cost.
The device not only saves labor, improves productivity, reduces labor intensity, and reduces the production cost of the plate, especially the uniform thickness of the plate produced, the flatness is high, the gloss is good; the price of the device is low, the ordinary user Can bear it. The advantages of the resin disc continuous mill in the field of grinding are gradually emerging. With the state's policy support for energy-saving and environmentally friendly products and the awareness of energy conservation and environmental protection in the stone industry, the domestic stone equipment industry is developing in an efficient and low-cost direction.
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