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In the water head, the market share of single-bar lining saws is over 80%. There are not many stone processing plants using double-bar lining saws. For example, Haixi uses double-bar 2 meters saws, which is the first case. “In the 16 static saws, there are 12 double-row bars and 2 m saws.†The factory director Chen Chukai introduced, “The 12 sets of 2 m saws are currently only available in Haixi.â€
Compared to a single link, each double-row bar saw is at least 100,000 more expensive. “But the fluctuation of the double-bar linkage is significantly reduced. The saw blade swings more smoothly and the guiding precision is higher. It can effectively improve the flatness of the cutting board surface, and the subsequent grinding and polishing time and cost of the product will be greatly reduced.†Haixi Stone Lanzhou Electronics, the equipment manager of the trading center, said.
"In fact, in terms of production capacity, there is no obvious gap between the two. We increase the budget by using double-connected bars, and the purpose is to 'seek stability.' The equipment in the processing plant is stable, and the quality of the products will be improved accordingly. The subsequent steps are much simpler. "Director Chen introduced.
The upgrade from a single link to a double link is not as simple as it seems, and the process took a full seven months. “In the beginning, we organized a team to inspect the processing equipment all over the country.†Chen said, “In Shanghai, I found a custom-made double-bar 2 m saw in Kodak. The sawing effect is very good. In the sawing process, the blocks are not easy to swing and will not be scattered, so we decided to use this equipment on the spot."
After the equipment was filmed, there was a problem in the installation of the base. Since the location of the Haixi Stone Processing Factory is made by reclamation and land reclamation, the stratum is soft and sandy, and it is difficult to load the impact of the double-row bar saw. “Preliminary consideration was given to piling, and a group of experts were invited to demonstrate that the result was that the piling could not load the impact.†Chen said: “I was inspired by the train track laying method. We dug 1 m under the frame. The flat bottom pit, filled with gravel and covered with cement, perfectly solved the installation problem of the base."
Li Jianhua, manager of Keda Stone Machinery Office, said frankly that this project is no small challenge. “At the beginning, I didn’t have a good grasp of this project. Because there are 2 double-bar 2 meters saws in Shanghai, too few samples can be borrowed. Later, we organized a group of engineers to spend nearly 3 months. Repeated modifications and adjustments to components such as bearings and connecting rods have finally completed this project successfully."
When the double-row bar saw was put into production according to the scheduled plan, all the people involved in the project were all impressed by the fact that the blocks were sawed into thin sheets, even though they were sawing from a single-bar 2 m to a double-link 2 The upgrade of the rice saw is only a small innovation for the entire stone machinery industry, but the advancement of the industry often comes from a subtle point, which is the "butterfly effect" of innovation.
Looking back at the history of stone processing equipment, every step forward is an innovation brand.
The history of sawing equipment
The stone sawing equipment was originally based on a frame saw. The frame saw is mainly composed of a saw frame, a chain rod, a column frame, a saw blade and the like. The working principle is that the saw blade mounted on the saw frame is reciprocated with the saw frame under the driving of the connecting rod, and at the same time, the feeding movement is continuously performed downward through the lifting and transmitting mechanism, thereby realizing the sawing processing of the stone.
Since the sawing process of the frame saw is non-continuous, the sawing speed is slower. In order to improve the processing efficiency, a diamond circular saw machine has been developed. It is mainly composed of a frame, a saw blade driving motor and a diamond circular saw blade, a lifting and feeding guide device, a saw blade translation guide rail and the like. The working principle is that the diamond circular saw blade mounted on the main shaft rotates and performs reciprocating linear motion on the beam guide rail, and the lifting and lowering guide device realizes the up and down movement of the saw blade and accurately eats the knife. Compared with the frame saw, the sawing line speed of the circular saw can reach 30~45m/s, which greatly improves the processing efficiency.
However, the circular saw machine drive shaft cannot fully support the heavy saw blade to be sawed along the vertical plane of the space, and the excessively large saw blade will cause the saw to be not straight, so the diameter of the circular saw blade generally does not exceed 3 meters. From the sawing depth and the number of sawing plates, the circular saw is not as good as the frame saw. In the production of stone slabs, the circular saw cannot completely replace the frame saw in a short period of time.
In order to further improve the processing efficiency, a combination saw has been developed on the basis of a single-disc circular saw, and a plurality of circular saw blades are mounted on the same main shaft at a certain interval. Since the number of combined saw blades can be as many as one hundred pieces, one hundred pieces of wool can be produced in one process, which greatly improves the production efficiency; on the other hand, in order to improve the automation degree of stone processing, people in the combination saw sawing thin plates At the same time, the horizontal sawing machine cuts the thin stone sheets into slats. This vertical sawing and horizontal sawing are concentrated on one machine and the equipment is called a two-way cutting machine. The two-way cutting machine is one of the fastest growing devices in the modern stone industry.
Swing arm is a schematic diagram of the frame machine
Changes in grinding and polishing equipment
The stone grinding and polishing equipment was previously a hand-held grinding and polishing machine. Its basic structure consists of the main rocker arm, the auxiliary rocker arm, the main motor, the main shaft and the pressing device, the column, the rocker base, the lifting motor and the screw. Armrests and other components. The working principle of the main motor is that the vertically mounted main shaft and the grinding disc mounted under the main shaft are rotated by the belt drive. The armrest can be moved along the surface of the stone product and moved up and down within a limited range by using the armrest with two rocker arms. The grinding device or the artificial grindstone grinds the surface of the stone to complete the grinding and polishing operation. By manually replacing the grinding discs on the same machine, all the operations of rough grinding, semi-fine grinding, fine grinding, fine grinding and polishing can be completed one after another.
However, since the hand-held mill requires manual observation to determine the replacement of the different size discs, the technical level of the workers is higher, and the final quality of the products varies from person to person. So the multi-head continuous grinding and polishing machine came into being.
The continuous mill completes the whole process of coarse grinding, fine grinding, fine grinding and polishing of the stone in one time by installing a plurality of different grinding blocks and polishing blocks on the production line. The machine is mainly composed of grinding head, grinding head motor, grinding disc drive frame, frame, automatic conveyor belt and transmission shaft, total control panel, grinding disc control panel, hydraulic station, water spray cooling device, etc., and the degree of automation is extremely high. Compared with the hand-held mill, the operator has low labor intensity, high production efficiency, low production loss, high processing precision, and stable quality of the grinding and polishing plate.
The 16-head automatic stone grinding and polishing machine uses a resin disc grinding disc and a pendulum grinding head. The resin disc grinding disc is light in weight, low in power consumption and high in grinding efficiency; the price is only 1/2 of the conventional continuous grinding and polishing machine of the same specification; The required power is 7.5KW, which is only 1/3 to 2/3 of the normal continuous grinding head (plate) of the same specification, and the power consumption is low.
Upgrade of special-shaped processing equipment
The processing of special-shaped stone was originally artificial, and with the advancement of technology, CNC machining equipment such as diamond bead wire saw, high-pressure water jet equipment and copy CNC machine tools appeared one after another.
The CNC diamond bead saw is mainly composed of a sheave, a diamond bead, a guide wheel motor, a frame, and a sheave propulsion device. The cutting tool used in this machine is a beaded rope, which uses the diamond particles contained in the bead to move at a high speed of 20 m/s or more on the surface of the stone. It is suitable for processing large-sized and thick-shaped shaped stone products. The wire saw has high cutting efficiency and large cutting area, flexible use, no noise, no vibration, and smooth stone cutting surface. At present, the beaded rope has been developed from a single rope type in which only one diamond bead rope can be installed to a multi-rope type in which 60 bead ropes can be installed at the same time.
High-pressure water jet technology is a stone processing technology that uses high-pressure water jet or abrasive jet as cutting means. It consists of high-pressure water pump, working host and numerical control system. It is a simple tool with no dust pollution, low noise and narrow slit. Cutting technology, low processing cost, low power consumption, large batch of processed products, high precision, wearable materials and water can be recycled, mainly used for processing of parquet plates and various flat stone processing.
With the development of computer technology, various multi-functional and high-efficiency numerical control processing equipments have appeared for space-dimensional products with different cross-sectional shapes. These processing equipment can be programmed to complete the processing of a variety of complex shapes of stone shaped products, such as rotary body, body carving products processing, plane engraving processing. The biggest advantage of this type of processing equipment is that it can perform multi-process operations at one time, with high processing quality and high machining accuracy, and is suitable for processing complex contours.
Innovative game
Throughout the development of stone processing equipment, stone processing equipment is increasingly diversified, refined, and automated, and innovation has never stopped. The stone processing enterprises all over the country have been forced to shut down due to problems such as dust and noise pollution, which has sounded the alarm for the stone industry. The backwardness will be eliminated, and the replacement of stone processing equipment is the trend of the times.
Under the current situation, how to increase production capacity, enhance product added value, increase product profitability, and become an urgent problem for the entire stone industry, and introduce and innovate stone machinery and equipment and accept new stone processing technology to improve the utilization rate of stone. The level of deep processing will surely lead the growth of the industry.
In the past 30 years, China has continuously introduced advanced national technology, and has formed a complete stone processing equipment manufacturing system. The gap between its technical level and international advanced level is gradually shortening. Intelligent equipment-based equipment development and numerical control technology are gradually becoming more and more mature. A number of stone machinery enterprises in Shandong, Fujian, Guangdong and other places have further improved the processing and manufacturing level of domestic stone machinery on the basis of absorbing and digesting foreign advanced technology, such as modern multi-strand wire saw, large-size marble gang saw machine, surface coating. Technical research and development of technology and quartz plate pressing production lines have been in line with international standards.
However, it is undeniable that in many projects, there is still a big gap between the domestic and international advanced levels. For example, the combination of wire saws has been widely used in foreign countries such as India, Brazil, Italy and other stone producing countries, but it is still quite rare in China due to high cost and other factors; like domestic special-shaped stone processing equipment, there are few CNC machining machines with strong functions. It is mainly a simple CNC machine tool, which uses profiled tools for profiled machining. Shaped machining equipment such as horizontal CNC machining tools, vertical CNC machining machines, CNC countertop machining machines, etc. are mainly imported from abroad. In addition, technologies such as automatic glue line, standard board automatic processing and packaging production line, and CNC CNC machining center have not yet been popularized in China.
Technology is the primary productive force, and innovation is undoubtedly the soul of technology. In the era of innovation, along with the continuous development of the stone market, stone machinery manufacturers need to continue to innovate in order to better participate in the competition in the international stone market. Only by adhering to the road of absorbing foreign advanced experience and technology and independent research and development, domestic intelligent stone processing equipment can replace the high-priced “Parkai products†and become the mainstream of China's stone processing equipment, thus promoting the stone industry to move faster and better. Modernization is moving forward.
Innovation never stops: the advanced path of stone processing equipment
Abstract On May 11, the stone processing plant of Haixi Stone Trading Center was officially put into operation. Into the processing plant, steel structure standard factory, cement hardened workshop floor, fully automated machinery and equipment, all show the advanced and style of the processing plant. Among the many processing equipment, especially...
On May 11, the stone processing plant of Haixi Stone Trading Center was officially put into operation. Into the processing plant, steel structure standard factory, cement hardened workshop floor, fully automated machinery and equipment, all show the advanced and style of the processing plant. Among the many processing equipment, the 16 striking Kodak double-joined marble static shovel saws are particularly striking.