If you run a furniture or mattress factory, you probably know this number: a pre-made continuous spring unit costs you 35-45% more than the raw steel wire it's made from. That markup pays for your supplier's labor, machinery depreciation, transport, and profit. Every spring unit you buy is money leaving your factory that didn't have to.
And the problems don't stop at price. Supplier lead times stretch to 3-4 weeks during peak season. Quality varies between batches — one delivery has perfect tension, the next has springs that pop under load. You adjust your assembly line to compensate, and your warranty claims tick upward anyway.
The IF-L Wire Drawing Spring Machine lets you cut the supplier out entirely. You feed in steel wire, and the machine produces continuous spring units — 32 per minute, with servo-controlled precision and zero wire splicing. One operator runs four machines simultaneously. The math changes fast when you control production yourself.
A wire drawing spring machine — sometimes called a continuous spring coiling machine — takes raw steel wire and forms it into continuous spring units in a single automated process. The wire is drawn, coiled, heat-treated, and cut to length without any manual intervention. The result is a spring unit where every coil has identical tension, height, and spacing.
The IF-L takes this a step further. It uses servo control for coil formation, which means the coiling parameters are digitally set and precisely replicated on every single spring. Traditional mechanical spring machines drift as cams wear and settings loosen — the IF-L's servo system eliminates that drift entirely. You set the spring height, wire diameter, and coil count on the control panel, and every spring that comes out matches the spec.
Here's what that means in practice: a furniture factory in Vietnam was buying continuous spring units from a Chinese supplier at $4.20 per unit, with a 3-week lead time. They installed two IF-L machines and started producing their own springs from raw wire at $2.10 per unit. The two machines paid for themselves in 7 months. After that, every spring unit was pure savings.
| Specification | IF-L |
|---|---|
| Steel Wire Diameter | 1.7 - 2.2 mm |
| Free Height of Springs | 150 - 180 mm |
| External Diameter of Termination Ring | 55 x 105 mm |
| Rings per Spring | 4 |
| Productivity | 32 pcs/min |
| Main Motor Power | 1.5 kW |
| Coil Wire Diameter | 1.8 - 2.0 mm |
| Helical Wire Diameter | 1.6 - 1.7 mm |
| Power Requirement | 380V 3-Phase (50-60Hz) |
| Hydraulic/Air Pressure | 5 MPa |
Let's break down the numbers for a mid-size furniture factory producing 500 mattresses per month with continuous spring units:
| Cost Factor | Buying from Supplier | Making with IF-L |
|---|---|---|
| Unit cost per spring | $4.20 | $2.10 (wire + electricity) |
| Monthly cost (500 units) | $2,100 | $1,050 |
| Lead time | 2-4 weeks | Same day |
| Quality consistency | Varies by batch | Servo-controlled, identical |
| Labor per unit | Included in price | $0.15 (1 operator / 4 machines) |
| Annual savings | — | $12,600+ |
Two IF-L machines cost less than one year of supplier markup. After the payback period, every spring unit you produce adds $2.10 of margin that used to go to your supplier. For a factory running 500 units per month, that is $12,600 per year in pure savings — and that is before you factor in the elimination of lead times, quality issues, and minimum order quantities.
The IF-L produces continuous spring units, but a complete spring production line needs more than one machine. Here are the machines that pair with the IF-L to give you full in-house spring manufacturing capability:
Q: "What wire types does the IF-L accept?"
A: The IF-L works with both ordinary hot-drawn and cold-drawn steel wire, diameter 1.7-2.2mm. This covers the standard wire specs used in mattress and furniture spring manufacturing worldwide.
Q: "How long does it take to change spring specifications?"
A: Spring height, wire diameter, and coil count are set through the digital control panel. A spec change takes 5-10 minutes — no mechanical adjustments needed. You can switch between mattress and sofa spring production on the same shift.
Q: "How many machines do I need for my factory?"
A: One IF-L produces 32 springs per minute — roughly 15,000 springs per 8-hour shift. For a factory making 500 mattresses per month, one machine is sufficient. For 1,000+ mattresses per month, two machines give you redundancy and higher throughput.
Q: "What maintenance does the IF-L require?"
A: Daily inspection of wire feed and cutting mechanism. Weekly lubrication of moving parts. Monthly check of servo motor calibration. Blade replacement every 200-300 hours of operation. The machine is designed for easy maintenance — all service points are accessible without disassembling the main body.
Infinity Foam Machinery has been building spring equipment for mattress and furniture factories for over a decade. The IF-L is not a prototype — it is a production-proven machine running in factories across Southeast Asia, the Middle East, and Latin America. Every machine ships with ISO9001, IEC, and CE certifications, and delivery takes 10-20 working days from order confirmation.
We do not just sell you a machine and disappear. Our team helps you integrate the IF-L into your existing production line, whether you are pairing it with a sofa zig-zag spring former for furniture production or building a complete bonnell spring production line from the ground up. We have the full range of spring machines, from coiling to assembly, and we can help you design a line that fits your factory floor and your budget.
You do not need to decide today. But if you are still buying spring units from a supplier, you are paying 35-45% more than you need to. The IF-L can change that math in less than a year. Tell us your monthly production volume and current spring specs, and we will show you exactly how fast the payback works.
Tell us your monthly volume and current spring specs. We will calculate your payback period and configure the IF-L for your production line.
