Production Line Integration: Can Machines from Different Brands Be Linked?

Can Different Brands Be Linked into One Line?

Yes, and that's the norm in food factories. Very few companies can supply everything from mixing, forming, steaming, and freezing to packaging themselves; most factories pick the best machine for each section and then connect them.

But "can be connected" and "connected well" are two different things. It's very common for every machine to test fine on its own, yet once linked, the line keeps jamming and piling up. The problems usually lie in a few areas: speed, connections, signals, safety, and responsibility.

In June 2026, the Economic Daily News reported that the Taiwan Association of Machinery Industry had announced the first food machinery industry standard, covering common communication protocols and data structures between equipment, so that equipment from different brands can exchange data in a consistent format, such as defrost status, compressor frequency, and door-open time for freezing equipment, or furnace temperature and fault alarms for boilers. Standards like this address whether "data can be exchanged"; mechanical connections and speed matching still need to be handled individually. For the full content of the standard, refer to the association's announcement.

What If Speeds Don't Match?

Every machine has its own pace: how many pieces per minute the encrusting machine produces, how many trays per minute the arranger fills, how fast the steamer conveyor runs, how many kilograms per hour the freezer can handle. If any one section is slower than the rest, the whole line's output is limited by it; that section is called the "bottleneck."

How to deal with it:

1. Find the bottleneck first: List the actual capacity of each section (not the catalog maximum); the slowest one is the ceiling for the whole line.
2. Have upstream follow downstream: Slowing down the forming machine is better than letting products pile up on the conveyor.
3. Add buffer zones: Leave a stretch of accumulation conveyor or temporary storage between two sections to absorb brief speed differences. For example, when the packaging machine changes film, products ahead of it can queue temporarily.
4. Expand the bottleneck section: If the bottleneck is freezing or steaming, add more units or switch to a larger model.

Mechanical and Signal Connections

• Height and width: The outlet height and belt width of the previous machine should line up with the inlet of the next, adding a transfer conveyor if needed.
• Product orientation: Whether products flip over, deform, or bump into each other as they drop from one machine to the next.
• Interlock signals: When downstream stops, should upstream stop too? This requires signal interlocking between machines, for example a stop signal sent when downstream is full. The control systems of different brands must coordinate contacts and logic.
• Emergency stop: Ideally the line's emergency stop buttons are interlinked, so pressing one anywhere stops all related machines.

Safety Interlocks

Once two machines are connected, new hazard points often appear at the junction: pinch points between the conveyor and the machine, and nip points at the transfer. Article 43 of the Occupational Safety and Health Facilities Rules (職業安全衛生設施規則) requires guards and enclosures on hazardous parts of machinery such as shafts, gears, pulleys, and drive belts; Article 57 states that where it's difficult to stop part of a continuously fed production unit and guards can't be installed, devices with safety function design must be provided or necessary safety measures taken, with an on-site supervisor assigned to oversee the work. When integrating, re-examine the guarding at every junction.

Who Is Responsible for Integration?

This is where disputes most easily arise. There are three common approaches:

1. The factory integrates it itself: The factory has someone who understands mechanical and electrical systems, plans it, and coordinates the vendors. The most flexible, but the responsibility is also yours.
2. The main equipment maker is responsible: Usually the forming or packaging machine maker coordinates the interfaces and interlocks.
3. A systems integrator is hired: A professional integrator handles planning, power distribution, controls, and acceptance for the whole line.

Whichever approach you take, make these clear in advance:

• Who is responsible for the interfaces (mechanical, electrical, control signals)?
• What are the acceptance criteria for the whole line? For example, how long it runs continuously, what output, and what defect rate.
• When problems arise, who determines which machine is at fault?
• Who is the warranty and repair contact for each machine?

To ask whether Dong-Yih Machinery takes on full-line planning, call us at 06-257-4644.

FAQ

Q: Can machines from different brands be linked into one line?
A: Yes, it's the industry norm, but you need to handle speed matching, height alignment, signal interlocking, and safety guarding.

Q: My encrusting machine is faster than my packaging machine, and products keep piling up. What should I do?
A: First set the forming speed no higher than downstream capacity, then add a buffer zone; in the long run, expand the bottleneck section.

Q: If problems arise after integration, whom should I contact?
A: Agree on integration responsibilities and acceptance criteria in advance, or it's easy for everyone to blame someone else.

Q: What skills are needed to integrate a line myself?
A: You need to understand mechanical connections, electrical control signals, and safety guarding, and have someone who can coordinate all the vendors.