PORTABLE ULTRASONIC ENERGY AT THE ASSEMBLY
Dizo Sonics handheld ultrasonic spot welding machines bring a compact acoustic tool to localized plastic joints, stakes or repair points. The 28 and 35 kHz reference models are suited to short manual cycles after the exact material, horn contact, operator method and production duty have been validated.
Handheld ultrasonic welding is best for localized joining, staking, tacking or rework where the operator can position the tool consistently and the quality plan permits manual application. Because tool angle and applied force can vary, it is not the default choice for critical joints requiring tightly controlled force, collapse and traceability.
A simple support fixture, trigger guide or balancer can improve ergonomics and repeatability. Duty cycle, handpiece temperature, cable routing and operator exposure are reviewed for production use. The machine must not be marketed as suitable for every plastic; exact grades and joint features require trials.|
Production requirement |
How the system addresses it |
|
Portable access |
The tool moves to a large or installed assembly instead of moving the part to a press. |
|
Localized joining |
Custom tip geometry concentrates energy at selected spots or stakes. |
|
Simple deployment |
Compact generator and handpiece suit cells, repair areas and low-volume stations. |
|
Upgradeable method |
Fixtures, balancers and guides can improve manual-process consistency. |
|
Application |
Typical joining requirement |
|
Automotive trim tack |
Localized attachment where the approved manual process is suitable. |
|
Plastic stake forming |
Small posts with a custom handheld staking tip. |
|
Large assembly spot weld |
Accessible points on parts that cannot enter a standard press. |
|
Prototype and repair |
Controlled trial, rework or service operation. |
|
Nonwoven / sheet spot |
Selected materials after exact stack and horn tests. |
Ultrasonic welding converts electrical energy into high-frequency mechanical vibration and delivers it through a tuned acoustic stack. Under controlled force, localized heating develops at the designed joint or stake feature, followed by a short hold stage while the polymer solidifies. The process is fast and uses no adhesive, but repeatability depends on resin grade, molded-part consistency, joint design, horn contact, fixture support and a validated process window.
|
Configuration |
Architecture |
Best fit |
|
DZ-3512E |
35 kHz / 1200 W reference |
Fine localized welds and compact tips. |
|
DZ-2808E |
28 kHz / 800 W reference |
Portable lower-frequency option. |
|
Handpiece support |
Balancer or suspension |
Reduces operator load in repeated production. |
|
Guided fixture |
Locating nest and tool guide |
Improves angle, contact and repeatability. |
|
Reference model |
Frequency |
Rated power |
Reference weight |
Generator size (W×L×H) |
|
DZ-3512E |
35 kHz |
1200 W |
Approx. 10 kg |
450×350×200 mm |
|
DZ-2808E |
28 kHz |
800 W |
Approx. 10 kg |
450×350×200 mm |
|
Common reference |
28 or 35 kHz |
Model dependent |
Generator reference |
220 VAC; amplitude 10-100% |
|
Environment |
— |
— |
— |
Reference operating range: -10 to 40 °C |
Important: Published values are reference configurations, not a universal performance guarantee. The approved quotation, application trials and general arrangement drawing define the supplied machine.
|
Parameter |
Engineering purpose |
|
Frequency and acoustic tuning |
Matches the horn, booster, converter and application; confirmed after acoustic design and trials. |
|
Amplitude |
Controls vibration displacement and heat generation; stored by recipe where the generator supports it. |
|
Trigger force or trigger position |
Defines when ultrasonic energy starts and reduces variation from part loading. |
|
Weld mode |
Time, energy, peak power, collapse/distance or absolute position, depending on controller and validation plan. |
|
Weld force / air pressure |
Influences interface contact, melt flow and final joint formation. |
|
Hold time and hold force |
Stabilizes the joint before the horn retracts. |
|
Peak power and energy windows |
Useful indicators for detecting missing parts, poor contact, tool wear or material variation. |
|
Collapse or final position |
Optional measured characteristic for applications requiring dimensional control. |
|
Control element |
Available project function |
|
Recipe and access control |
Named part programs, controlled editing rights and change history where required. |
|
Cycle result |
Pass/fail result based on agreed parameter limits, with clear alarm and recovery logic. |
|
Process data |
Time, energy, peak power, amplitude, force/pressure and position values available according to controller scope. |
|
Part identification |
Barcode, QR, RFID or manual selection options to prevent recipe/variant mismatch. |
|
Tool and fixture status |
Presence, home-position and service-life counters can be included in the control plan. |
|
Line interface |
Dry contacts, industrial Ethernet or customer-defined protocol; MES exchange is optional, not standard. |
|
Recipe setting |
Amplitude and time settings are established in trials and protected from casual change. |
|
Tool condition |
Tip wear, tightness and acoustic response are checked as part of daily maintenance. |
|
Operator method |
Position, angle, support and trigger sequence are documented in the work instruction. |
|
Sampling plan |
Strength or appearance checks compensate for the higher manual-process variation. |
The final control plan, parameter limits, data fields, retention period and failure-recovery logic are agreed with the customer. MES connectivity is optional unless it is explicitly included in the project scope.
|
Material or design factor |
Application guidance |
|
ABS, PC/ABS, PC, PS |
Common ultrasonic candidates when joint geometry and cosmetics are suitable. |
|
PP, PE and other semi-crystalline resins |
Feasibility depends strongly on near/far-field distance, stiffness, joint design and fillers. |
|
PA and filled engineering resins |
Moisture, reinforcement level and horn wear must be reviewed during trials. |
|
TPE/TPU or soft components |
Often challenging; test the exact grade, thickness and support condition. |
|
Dissimilar materials |
Do not approve from generic resin names; validate chemical compatibility and melt behavior. |
Always confirm weldability with the exact production resin grade, additives, fillers, color, moisture condition and molded-part geometry. Generic resin-family names are not approval evidence.
|
Option |
Project scope |
|
Handpiece |
Straight or application-specific ergonomic form where available. |
|
Tip / horn |
Custom spot, stake, cut or localized joining geometry after acoustic review. |
|
Support |
Tool balancer, suspension, holder or positioning guide. |
|
Fixture |
Simple nest, back support and datum features for the assembly. |
|
Safety |
Trigger protection, cable management and site-specific operator controls. |
The acceptance plan for this system focuses on spot strength and appearance, tool temperature, operator repeatability, fixture support, duty cycle, ergonomics and work-instruction clarity. Quantities, test methods, limits, gauges and responsibility for production parts are agreed before detailed engineering.
|
Acceptance activity |
Typical evidence |
|
Documented scope review |
Approved specification, layout, utilities, interfaces, cycle definition and exclusions. |
|
Tool and datum verification |
Part location, clamp support, tool identity and changeover checks. |
|
Process-window trials |
Representative production parts across agreed material and dimensional variation. |
|
Quality checks |
Agreed visual, dimensional, strength, leak, burst or functional test with defined limits. |
|
Repeatability run |
Quantity, run duration, operator conditions and acceptance method agreed before FAT. |
|
Safety validation |
Guarding, interlocks, emergency stops, reset behavior and maintenance access. |
|
Data and alarm test |
Recipes, access levels, pass/fail windows, alarms, identifiers and interface signals. |
|
Training and handover |
Operation, changeover, maintenance, backup/restore and agreed documentation. |
|
Stage |
Main input or activity |
Output / decision |
|
1. Application review |
Parts, materials, joint, CTQs, takt and plant standards |
Feasibility risks and missing inputs |
|
2. Concept and quotation |
Process choice, layout, tooling, controls, interfaces and exclusions |
Approved technical and commercial scope |
|
3. Trials and samples |
Production-equivalent parts and agreed test method |
Process window and sample evidence |
|
4. Detailed engineering |
3D design, risk review, I/O, safety and documentation plan |
Customer design approval |
|
5. Build and debug |
Machine, tooling, programs and internal run-off |
Ready-for-FAT review |
|
6. FAT |
Agreed parts, run quantity, quality checks, takt and documents |
Punch list and shipment release |
|
7. Installation and SAT |
Utilities, setup, training and site acceptance run |
Production handover by agreed scope |
|
Please provide |
Why it is needed |
|
Part and joint photos/drawings |
Used to check envelope, datums, access, tooling and machine layout. |
|
Exact material and thickness |
Required for process feasibility and a grade-level trial plan. |
|
Number and location of spots |
Required to complete the technical concept and remove quotation assumptions. |
|
Required strength/appearance |
Defines measurable trial, FAT and SAT acceptance criteria. |
|
Cycle frequency and shift pattern |
Required to complete the technical concept and remove quotation assumptions. |
|
Need for balancer, guide or fixture |
Required to complete the technical concept and remove quotation assumptions. |
|
Question |
Answer |
|
Can a handheld welder replace an automatic press? |
It can for appropriate localized work, but it provides less control of angle, force and position. Critical high-volume joints generally benefit from a guided press or automated station. |
|
Which frequency should I choose? |
35 kHz often suits smaller details and 28 kHz can provide a different balance of amplitude and tool size. Final selection follows part trials. |
|
Can it weld PP or PE? |
Possibly, but these semi-crystalline materials can be challenging. Joint design, support, distance and exact grade must be tested. |
|
Is continuous operation possible? |
Duty cycle depends on the handpiece, horn, weld duration, cooling and environment. Production rate is confirmed only after a thermal and ergonomic review. |
|
What information is required for an application review? |
Please send part 3D data and drawings, exact resin grades, joint or stake details, production-equivalent samples if available, CTQ and test requirements, takt, annual volume, variant mix, utilities and plant standards. |
|
Can Dizo Sonics test our real parts before quotation? |
Yes. An application review and representative-part trials are recommended when feasibility, tooling concept or cycle assumptions need evidence. Trial scope, sample quantity and test method are agreed before testing. |
|
How is the final cycle time confirmed? |
The committed cycle is based on trials and a complete sequence study including loading, clamping, joining, cooling, inspection, data handling and unloading. Published reference cycles are not universal guarantees. |
|
Which plastic materials can be processed? |
Suitability is approved at exact-grade level. Resin chemistry, fillers, moisture, additives, color, recycled content, molded-part variation and joint design can all change the process window. |
|
What documents are supplied with the machine? |
The project handover package can include the approved specification and layout, electrical and pneumatic documentation, manuals, maintenance plan, spare-parts list, parameter backup, inspection records and FAT documents according to the contract. |
|
Do you support FAT, installation and SAT? |
Yes. FAT and SAT activities are defined in the project plan. Installation, training and on-site support depend on destination, responsibility split and the commercial scope. |
Pneumatic Plastic Ultrasonic Welding Machine — Robust 15 and 20 kHz pneumatic ultrasonic welding presses for medium and high-power thermoplastic joining, staking and insertion applications.
Enclosed Desktop Plastic Ultrasonic Welding Machine — Guarded, floor-standing ultrasonic workstations marketed in the legacy desktop range, for high-power 15 kHz production with integrated controls and tooling.
Ultrasonic Degating and Runner Separation Machine — Application-specific ultrasonic vibration for separating selected rigid molded parts from runners with controlled support and part collection.
Send Dizo Sonics your part drawings, 3D data, exact material grades, production samples, CTQ requirements and target takt. Our engineering team will review process feasibility, tooling, automation, validation and the information needed for a technical proposal.