Key Maintenance Knowledge for Straw Baling Machines

　　No automatic tape feed

　　1. The potentiometer for tape-length control is at the zero position.

　　The ribbon‑feed length control potentiometer is located in the second position from the left on the front‑panel switch panel. Turning it clockwise increases the ribbon‑feed length, while turning it counterclockwise decreases it; at the zero position, no ribbon is fed.

　　2. The strap is worn incorrectly.

　　Open the right door and thread the belt correctly, following either the “belt‑threading procedure” specified in the instruction manual or the illustrated diagram.

　　3. Foreign objects are present inside the upper and lower extensions.

　　With prolonged use, packaging machines that are not cleaned and maintained promptly can accumulate debris inside, leading to uneven or obstructed belt feeding. Regular cleaning and maintenance are therefore essential.

　　4. The clearance of the tape‑feeding roller is incorrect.

　　The clearance between the feed rollers of a semi‑automatic strapping machine is critical for proper belt feeding; adjust it according to the instructions in the manual. Make fine adjustments until the gap between the feed rollers exceeds the strap thickness by only 0.05–1 mm.

　　5. The selected PP strap is either too thick or too thin.

　　Since there are many manufacturers of PP strapping, and the thicknesses vary, select according to the specified requirements. If this is not feasible, carefully adjust the gap between the feed and return rollers following the procedure outlined in the instruction manual.

　　6. The electromagnet is not functioning properly.

　　The electromagnet is not functioning. First, check whether the wiring terminals have come loose, then inspect the coil for burnout. If both are normal, verify that the electromagnet has not shifted or become obstructed by debris, preventing the plunger from moving freely.

　　II. The strapping machine does not retract the strap.

　　1. Foreign objects are present inside the upper and lower extensions.

　　Foreign matter inside the upper and lower sub‑units, or loose countersunk screws securing the guide strips, may be jamming the strapping. Remove the upper sub‑unit and clear any foreign material.

　　2. The bearing of crossbar 635 has fractured.

　　Improper adjustment of the crossbar’s balance position can easily lead to cracking. The crossbar should be properly adjusted according to the instructions.

　　3. Improper belt clearance.

　　Since the take-up roller serves to tension the belt, when adjusting the clearance between the take-up and return rollers, prioritize the take-up roller and set the clearance so that it exceeds the belt thickness by 0.05 to 0.1 mm.

　　Siping Shunbang Agricultural Machinery Manufacturing Co., Ltd. is a modern agricultural machinery equipment manufacturer that integrates product research and development, manufacturing, sales, and service. The company has established strong, long-term partnerships with numerous well-known enterprises both domestically and internationally, thereby building robust advantages in talent, technology, and brand reputation.

　　The company adopts “Go with the flow and achieve national prosperity through practical action” as its corporate philosophy, aligning with the overarching trends of China’s economic development and pursuing industrial advancement with a spirit of pragmatism. Rooted in the core values of “filial piety and kindness, responsibility, innovation, and the pursuit of excellence,” the company strives to deliver automated, intelligent, and highly practical products, thereby generating greater value for its customers.

　　The company’s flagship product, the “Shouji Wang” straw‑feed baler, is an innovative, multi‑functional, high‑yield agricultural machine. After seven years of research and development, it has been awarded two national invention patents and four utility‑model patents, with full intellectual property rights, making it a premium product both domestically and internationally.