The machines for producing hose clamps

As one of the most professional hose clamp suppliers in China, we have a series of professional and advanced production equipment. The equipment required by hose clamp manufacturers needs to cover the entire process of raw material processing, component molding, assembly and quality inspection. The following is a list of core equipment classified by process, taking into account different production scales and process requirements:

1. Raw material processing equipment

• Flattening machine/slitting machine

         Used to cut coiled steel plates into steel strips of specified width (such as 12-20mm wide), with an accuracy of ±0.1mm.

• Material straightening machine

        Correct the bending deformation of the steel strip to ensure the accuracy of subsequent stamping.

• Cold drawing machine (optional)

        Cold drawing of stainless steel or carbon steel wire to improve material strength and surface finish (for worm raw materials).

2. Core component forming equipment

• Steel strip processing equipment

         Punching machine (punch press)

        Equipped with special molds to complete steel strip punching, slot punching (American throat clamp), folding (German throat clamp edge curling) and other processes, the tonnage is usually 20-60 tons.

• Bending machine

        Bend or curl the edge of the steel strip. Some German-style hose clamps need to be bent multiple times to form a rubber gasket slot.

• Surface treatment equipment

        Galvanizing line (hot-dip galvanizing or electrogalvanizing): rust-proof treatment of carbon steel strip;

        Polishing machine/passivation tank: polish or passivate stainless steel strip to improve corrosion resistance.

• Worm processing equipment

        Cold heading machine

        Multi-station cold heading machine (such as 3-5 stations) is used for one-time forming of worm head (cross groove, slot) and thread segment, with high efficiency (50-100 pieces can be produced per minute).

        Lathe (auxiliary)

        Used for small batch or non-standard worm processing, with higher precision.

        Heat treatment equipment

        Mesh belt quenching furnace + tempering furnace: quench (820-860℃) and temper the carbon steel worm to increase hardness (HRC 30-40).

        Thread rolling machine

       Thread rolling of the worm thread to ensure that the pitch and tooth depth meet the standards (such as ISO 262).

3.Component assembly and debugging equipment

• Automatic assembly machine

         The high-end production line uses fully automatic equipment to realize the integration of steel belt feeding, worm insertion, spring washer installation, and pre-tightening, with an efficiency of 20-30 pieces per minute.

• Manual/semi-automatic assembly tooling

         Use simple tooling to assist assembly in small-scale production, such as worm positioning fixtures and steel belt pre-bending molds.

• Torque testing equipment

         Torque wrench or torque tester: Check whether the tightening torque of the hose clamp meets the standard (such as American 15-30N·m, German 20-40N·m).

4. Surface treatment and protection equipment

• Spraying equipment

         Automatic spraying line: Spray anti-rust paint or Dacromet coating on carbon steel hose clamps, and the salt spray resistance test needs to be ≥500 hours.

• Grease coating machine

         Automatically apply molybdenum disulfide grease to the worm thread to ensure smooth tightening.

• Electrolytic polishing equipment (special for stainless steel)

         Improve the surface finish of stainless steel hose clamps through electrolytic process  and reduce the surface roughness to below Ra 0.8.

• Quality inspection equipment

         Dimension inspection tools

         Vernier caliper, micrometer: measure the thickness of steel strip (±0.05mm), worm diameter, etc.;

        Projector/image measuring instrument: detect the hole position and slot accuracy of stamping parts.

• Performance testing equipment

         Sealing test bench: simulate the working condition of hose, pass compressed air (0.6MPa) to detect the leakage;

         Vibration test bench: simulate transportation or working condition vibration, and detect the anti-loosening ability of throat clamp.

• Hardness tester

         Rockwell hardness tester: detect the hardness (HRC) of worm after heat treatment.

• Auxiliary equipment

         Mold processing equipment

        Wire cutting machine, EDM forming machine: used for the processing and maintenance of stamping dies and cold heading dies.

        Storage and packaging equipment

        Automatic sorting machine, counting and packaging machine: pack hose clamps according to specifications and print batch labels (including material, specifications, and production date).

Equipment selection suggestions

• Small-scale production: Manual/semi-automatic equipment (such as punch press + manual assembly) can be used, with low initial investment (about 500,000-1 million yuan), suitable for sample trial production or small batch orders.
• Large-scale production: Configure a fully automatic production line (such as stamping-cold heading-assembly integrated equipment), which requires an investment of 3 million to 5 million yuan, but the efficiency is increased by 3-5 times, which is suitable for industrial-grade orders.
• Customized needs: If non-standard hose clamps (such as large pipe diameters or special materials) are produced, special molds and testing equipment (such as large-size torque testers) are required.

By reasonably configuring the above equipment, hose clip manufacturers can achieve full process control from raw materials to finished products, and at the same time, they need to adjust the equipment accuracy and automation level according to the product positioning (civilian grade/industrial grade).