Paper cup machine ultrasonic horn replacement is a compatibility decision, not a purchase by face dimensions alone. The horn belongs to an acoustic assembly whose interfaces, tuning and application must match. A similar-looking part can fit mechanically while lacking the approval needed for the installed generator and process.
Use this guide to prepare a replacement brief for a confirmed ultrasonic sealing system. Record the actual assembly; a separate booster, a diagnostic scan and a particular mounting arrangement are not assumed to exist on every paper cup machine.
Establish whether replacement is supported by evidence
Keep the exact alarm, first occurrence, seam samples and recent service history. If the original concern is only weak sealing, use the ultrasonic troubleshooting guide before treating the horn as the failed part. Material, positioning, support and system conditions can affect the same finished seam.
Record the reason for replacement: identified damage, an authorized service finding, planned spare provision or an application change. Distinguish a confirmed defect from a component being considered as one possible cause. Preserve the old part identity and findings even when production urgently needs a spare.
Build the compatibility brief
| Item | Evidence to supply | Question for approval |
|---|---|---|
| System identity | Generator and converter references; booster if fitted | Is the proposed part approved for this assembly? |
| Acoustic specification | Supplier drawing, nominal frequency and application data | Does tuning and gain match the intended system? |
| Joint and mounting | Interface, fastener and mounting drawings | Can it be installed by the documented method? |
| Working geometry | Contact face, support and clearance references | Does the geometry suit the intended seam? |
| Cooling and duty | Installed provisions and operating scope | Can the approved condition be maintained? |
| Commissioning evidence | Permitted diagnostics and product test plan | What must pass before production release? |
Equal nominal frequency does not close the remaining compatibility questions. Do not create an adapter, substitute a joint fastener or alter the mounting merely because the replacement will otherwise not fit.
Keep component guidance within its scope
The Branson horn catalog explains tuning and the relationship between horn geometry, material and acoustic behavior for its equipment. It is useful background for the compatibility questions above, not evidence that a HANNAI machine uses Branson components or a catalog-listed assembly.
Final approval should come from the documentation or responsible supplier for the actual system. If the fitted references are unreadable, ask for an authorized identification route instead of inferring the stack from a general machine photograph.
Plan removal and assembly through the supplied procedure
Qualified personnel should follow the specified shutdown, isolation and safe access requirements. Preserve reference photographs and part labels before disassembly. Joint preparation, retention and assembly torque must follow the approved component instructions; this article supplies no universal value or interface compound.
Do not grind, weld, drill or polish a resonant component as an informal repair. Where the supplier provides a repair route, obtain the required inspection and tuning evidence before reuse. Store removed and spare parts so their joint and working surfaces remain protected and their status is clear.
Use only diagnostics available and approved for the system
A stack scan or other diagnostic check can be useful where the installed equipment supports it and the manufacturer requires it. If it does not, obtain the specified alternative. Do not perform an unsupported free-running check, energize exposed components or widen protection limits to obtain a result.
Retain the exact diagnostic quantity and test state. A startup result and a loaded operating value should not be compared as if they were the same measurement. Investigate abnormal noise, heating or repeated trips through the authorized stop and service procedure.
Validate the seam after installation
Complete the required equipment checks before controlled production. Use identified paper/coating, cup geometry and an approved setup, then repeat the agreed seam and functional assessments through the relevant operating condition. An alarm-free generator does not prove an acceptable cup seam.
Keep part references, assembly record, diagnostic results, rejected samples and the release decision together. For a spare, retain its approved stack assignment; do not assume approval for one machine covers every similar-looking station.
Frequently asked questions
Is matching the frequency label enough?
No. Interfaces, tuning, gain, mounting, geometry and the application still require approval.
Does every system need a scan before trial?
Use the installed manufacturer’s required checks. A scan is not a universal available function.
Can the horn be machined locally to fit?
Only through an explicitly approved specialist repair or modification route with the required validation.
What is the most useful replacement request?
A reason for replacement, actual component identities, supplier drawings, seam/material details and the relevant alarm or service evidence.
Request a horn-compatibility review
Send that brief through the HANNAI inquiry page, marking unknown references. The forming equipment range provides machine context; it does not establish that a specific horn, booster or generator is fitted as standard.