Application of SIMATICS7-300 Programmable Controller in Combination Machine Tool

Injector is a key component of diesel internal combustion engine and it is one of the leading products in the oil pump nozzle industry. With the development of China's automobile industry, the demand for fuel injectors has new requirements in quantity and quality. In view of this situation, we have designed and manufactured a combination machine tool for processing fuel injectors.

The machine's mechanical structure is complex and the power heads are made in France. It requires high processing precision, strong electrical excavation system function, tight workpiece processing and high production efficiency.

In order to realize the functions of drilling, reaming, reaming, tapping and compound drilling of this machine tool, we have chosen SIEMENS SIMATIC S7-300 programmable controller and OP15 character operator panel to achieve the purpose of electrical control. The machine tool is operated in automatic mode, semi-automatic mode and manual zero mode, and parameter setting and running status display can be performed. When the machine tool fails, alarm information is promptly issued and the fault is accurately eliminated. This intuitive display method provides a good human-machine interface.

The structure of the S7-300 programmable controller is a DIN rail module combination that is easy to replace and can select any desired module. The corresponding STEP BASIC software is more powerful and has a variety of programming methods. It can debug programs or monitor the actual running status of flags, timers, and counters online, and realize functions such as PLC fault diagnosis and information query.

The OP15 character display operator panel can directly display the status information, wrong accommodations and process variables, which brings great convenience for the user's corner machine operation status and fault location.

OP15's programming software, PROTOOL/LITE, is used to define the functions and interfaces of the OP15, enabling various display screens. The OP15 is connected to the S7-300 programmable controller via the MPI interface and the S7 program establishes communication with the OP15 via the user data area.
With the above hardware and software support, it is very beneficial to the system's software design. The programming of the machine tool adopts distributed programming. The program is divided into independent instruction blocks. Each block contains the logic of a given operation group.

The programming methods used are ladder diagrams, statement tables, and display blocks, parameter setting blocks, workbench execution blocks, auto-recovery blocks, and dynamic note adjustment blocks, etc., based on the name job functions implemented. This block is called by the organization block OB1 to realize the coordinated operation of the whole and the program.

After several years of operation, the machine tool shows that the entire system has a reasonable design, high control accuracy and reliable operation, which improves the automation level of injector production, reduces the labor intensity of operators, and improves production efficiency.

Seal Repair kit

Cypher SPRSEALS - it starts with seals

Since 1998, in the field of mechanical seal work and control, we have made step-by-step efforts to overcome the limitations and difficulties of the factors that affect the stability of the sealing performance, such as the material and the shape of the sealing lip.
Since 2000, continuous improvement and optimization of polyurethane elastomer materials and research on mixing with different materials and chemical raw materials. While the physical properties are balanced, new material performances after different chemical mixtures are also deeply developed.

Regarding the mixing research and development of nitrile rubber, hydrogenated nitrile rubber, silicone rubber, fluorinated rubber and various metal powders, countless deployment tests have also successfully realized the ideal special sealing material.
In the development and improvement of polyamide (nylon resin), polytetrafluoroethylene, and phenolic resin, we also ushered in a rapid increase in the number of our European customers and a doubled increase in sales in the Asian market.

We are researching dust seals (DKBI), piston rod seals (IDI, IUH, HBY), support rings (KZT,), piston seals (OUH, SPGO) in conventional hydraulic sealing systems day after day ), anti-wear rings/anti-wear rings (WR, SPGW) and are suitable for all kinds of jib cylinders, cantilever cylinders, bucket cylinders, lifting cylinders, and power steering cylinders.
Including the research and development and iterative production of the sealing ring of the hydraulic breaker, there have also been more new breakthroughs.

Thank you very much for your attention. If you have any demand for sealing system solutions, please be sure to contact me. I will cooperate with you in an honest and professional manner.

+ 0086 18024069172 / 18028519773
+86 020 3201 7236
sprseals@126.com

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