Full-Auto Spiral Center Tube Making Machine

Pulan is one of prominent manufacturers, producers, and exporters of Full-Auto Spiral Center Tube Making Machine. The tube length is infinitely adjustable, with diameter range Φ30~75mm (any five specifications selectable), and production efficiency of 20~35 pcs/min. Driven by a hydraulic system, with adjustable clutch pressure, the long barrel cutting process saves raw materials. Factory direct supply, customized solutions and bulk orders are available.

What is Full-Auto Spiral Center Tube Making Machine?

Full-Auto Spiral Center Tube Making Machine is a spiral center tube forming machine. The main shaft is driven by a hydraulic motor, and the steel strip is embossed, edge folded, and spirally wound into a tube, then cut into fixed lengths. The machine integrates embossing, edge folding, and tube forming processes into one unit, reducing production steps, saving raw materials, and improving efficiency. It is suitable for mass production of oil filter and diesel filter center tubes.

Equipment Applications and Components

Application

Production of metal center tubes for automotive oil filters and diesel filters.

Main Components:

Material unwinding rack and embossing rollers
Hydraulic system (vane pump, hydraulic motor, throttle valve, relief valve)
Forming main shaft and clutch
Edge folding mechanism (adjusted by screws)
Edge pressing rollers (handwheel adjustment)
Cutting rotary unit (outer cutting knife + inner cutting knife)
Length control rod and measuring scale
Electrical control system (touch screen/buttons)

Working Principle

The steel strip passes through the embossing rollers to create patterns, then enters the guiding channel and reaches the forming shaft. After the clutch is engaged, the main shaft rotates to spiral wind the steel strip. Meanwhile, the edge folding mechanism locks the edges together. When the preset length is reached, the cutting disc automatically cuts off the finished center tube.

Production Process:

Loading: Place the steel strip coil on the unwinding rack.
Embossing: The steel strip passes through embossing rollers to create patterns.
Feeding: Use manual inching feeding, wind one circle around the forming shaft, then separate the clutch.
Forming: The main shaft rotates, the steel strip is spirally wound, and the edge folding mechanism locks the edges.
Cutting: The cutting disc operates after reaching the preset length and cuts the center tube.
Discharging: The finished product automatically falls down.

Core Features

1. Multi-process Integration
Embossing, edge folding, and tube forming are completed in one machine, eliminating the need for multiple machines and improving production efficiency.
2. Spiral Forming with Hydraulic Drive
The hydraulic motor provides a torque of 115N·m, and the rotation speed can be adjusted through the throttle valve.
3. Fast Diameter Switching
Within the range of Φ30~75mm, any five specifications can be selected. Changing specifications is convenient and quick.
4. Infinitely Adjustable Tube Length
The center tube length can be freely set through the length control rod.
5. Adjustable Clutch Pressure
The clutch pressing force can be adjusted according to different steel strip thicknesses (0.25~0.32mm).
6. Precise Edge Folding Adjustment
The double screw adjustment structure controls the edge locking angle, ensuring neat and stable tube seams.
7. Long Barrel Cutting Process
The special cutting method reduces material waste and lowers production costs.
8. Stable Hydraulic System
Recommended hydraulic pressure is 7MPa, providing stable operation, low noise, and reliable performance.

Technical Parameters

Installation Notes

The ground should be flat and well ventilated. Adjust the bottom winch to maintain level.
Power supply: 380V/50Hz, above 4kW. Wire cross-section ≥2.5mm². Motor rotation direction must match the arrow direction on the pump body. Proper grounding is required.
Use a forklift above 2 tons for low-height transportation.
Hydraulic pump pressure should be ≤10MPa (recommended around 7MPa).
Replace hydraulic oil completely after the first month of operation, then replace every six months.
Check the remaining steel strip material in time to prevent idle running.

Common Questions (Q&A)

Q1: How to change different center tube diameters?
A: Within the range of Φ30~75mm, replace the corresponding forming molds and cutting positioning parts. No complicated adjustment is required, making size changeover quick and convenient.
Q2: What should I do if the edge locking is uneven?
A: Adjust the two screws of the edge folding mechanism. If the locking angle is too small, tighten screw 2 inward; if it is too large, tighten screw 1 inward until the edge is properly formed.
Q3: Why is the product deformed or not completely cut?
A: Possible reasons: ① Outer cutting knife adjustment is too deep → readjust it; ② Blade wear → sharpen or replace the blade; ③ Pressing roller too tight causing shaft deformation → loosen the edge pressing roller handwheel.
Q4: How to adjust the hydraulic motor speed?
A: Adjust the throttle valve at the hydraulic motor oil port. Turn clockwise to reduce speed and counterclockwise to increase speed. Do not keep the flow too low for a long time, otherwise the relief valve load may increase.
Q5: What maintenance is required every working day?
A: Add oil to all moving parts of the Full-Auto Spiral Center Tube Making Machine twice a day with a grease gun. Add calcium-based grease to the chain transmission system every three working days and regularly check the hydraulic oil level.

Purchasing Information

Factory direct supply, customized solutions available (diameter, length, etc.), bulk orders accepted.
Free sample testing available (send steel strip materials for trial production).
Chinese and English manuals, hydraulic diagrams, and spare parts lists are provided with the machine.
Long-term supply of spare parts (cutting knives, hydraulic pump seals, throttle valves, etc.).
Welcome to request a quotation or visit our factory. We will provide professional technical support and after-sales service.