Munekata MIW71-1 / MIW71-2 / MIW72-1 / MIW72-2 / MIW81-1 / MIW81-2 IMPULSE WELDER

Type: Plastic Welding Machine

Supplier / Manufacturer: Munekata Industrial Machinery Co

Model: MIW71-1 / MIW71-2 / MIW72-1 / MIW72-2 / MIW81-1 / MIW81-2

IMPULSE WELDER

The IMPULSE WELDER is a heat staking system with instantaneous heating and cooling which is safe, stable, and energy-saving. It is also environmentally friendly in terms of easy recycling of parts.

The mechanism of IMPULSE WELDER

The impulse welder operates by applying an electrical current to the heat tip, causing it to heat up through Joule heating. This heated tip melts and forms the thermoplastic material. Subsequently, cool air is blown to solidify the plastic. The welder is capable of staking multiple points simultaneously, handling up to 100 points in the same time as it would for a single point, though the exact time may vary depending on the size of the heat tip.

The impulse welder continues to be utilized for various applications, consistently demonstrating strong performance and versatility. Its multi-purpose design meets a wide range of needs, ensuring reliable results across different use cases.

Welding pattern	Features	Examples
Plastics + Plastic (dissimilar materials)	● Widely Applicable and Versatile: Can be used with different materials for parts a and b. ● Minimal Pressure Application: Applies small pressure, minimizing impact on the surface. ●Enhanced Strength: Strength increases significantly with sufficient heating after forming the welding head.	● Automotive: Tail lamps, high mount lamps, trunk sides, side moldings, instrument panels (meter panels, shift levers, steering wheel covers), seat peripheral parts. ● Electrical Appliances: Bathroom controllers, digital appliances (circuit board fixing). ● Precision Parts: Camera lens components, electronic components.
Plastic + Plastic (same plastic)	● Deep Welding: By deeply welding and melting resin a, it fuses with resin b, resulting in excellent sealing properties.	● Automotive: Door trims, deck side trims, pillars. ●Electrical Appliances: Switch panels.
Plastic + Metal Mesh	● Welding Without Holes: Enables welding without creating holes in the wire mesh.	● Automotive: Cowl louver wire mesh. ● Other: Wire mesh filter installation.
Plastic + Non-Woven Fabric	● Fiber-Resin Integration: Welding is achieved by allowing the resin to penetrate and fuse with the fibers.	● Automotive: Attaching non-woven fabric to the inner surface of door trims and pillars (compatible with PET and Thinsulate materials).
Plastic + Membrane Filter	● Direct Heat Application: Allows for welding directly through the filter by applying heat, ensuring waterproof and breathable characteristics necessary for venting air.	Applications Requiring Waterproof and Breathable Properties ● Automotive: ABS (Anti-lock Braking System), motor components, electronics components.
Embedding	● Embedded Flanged Nut and Hole Sealing: Capable of embedding flanged nuts and sealing holes.	● Electronics: Electronic device casings.
Insert nut	● Impulse Press-Fit Welding of Bit Nuts: Utilizes impulse technology for press-fit welding of bit nuts.	● Automotive: Intake manifolds, air filters. ●Electrical Appliances: Audio components, etc. ●Size Compatibility: Suitable for M4 to M5 nuts; larger sizes are handled with induction heating.
Flat head tip welding	● Flat Head Heat Tip: Allows for flush riveting where the head does not protrude from the surface, using C-cut or swaged sections.	●Keyboard: Attaching the steel plate to the backside. ● Battery: Attaching battery terminals.
Hole Sealing	● Sealing Blow Molding Holes: Capable of sealing holes created by blow molding processes.	● Blow Molding Nozzle Sealing: Efficiently seals holes from blow molding nozzles. ● Relay Cases: Suitable for sealing holes in relay cases. ●FFS Electrodes: Handling electrode holes in FFS (Form-Fill-Seal) applications.
Rim swaging	● Heat Riveting Lens Rims: Secures the outer rim of lenses through heat riveting, ensuring no play or rotation.	● Camera Lenses: Fixing camera lenses securely. ● Metal Parts: Fixing metal components.

Compatible Welding Resins

■ＡＢＳ ■ＰＰ ■ＰＳ ■ＰＥ ■ＰＣ ■ＰＯＭ ■ＰＭＭＡ

■ＰＢＴ ■ＡＢＳ／ＰＣ ■ＰＰＳ ■ＰＰＡ ■ＰＥＴ ■ＰＡ etc.

*Our extensive product lineup reflects our proven welding capabilities to date. We can also weld materials containing glass fibers, subject to consultation.

Handy Machine

In addition to the grip type, the slide unit (Munekata original mechanism) can be used to incorporate into hand presses, robots, and equipment.

■Timer control type: Achieve the stable heating that directly leads to improved welding quality

Product	Features	Specifications
MIW71-1	Temperature Display: Displays the temperature of the welding tip with a thermocouple. Advanced Functions: Includes error signal output, program selection, and air pressure detection (sensor required). Voltage Output: Outputs the tip temperature as a voltage signal. Audible Alert: Buzzer activation for detachment timing. Options available ■Grip Type: Designed for handheld operations (thermocouple attachment not available). ■Slide Unit*: Available in hand press and equipment integration types.	Input voltage: AC 100V Power consumption: 265W Air pressure: 0.4MPa~0.5MPa Welding time: 5 to 15 sec Welding tip size: Standard ø2 to ø7 (reference) Product dimensions: 304(W)×212(D)×130(H) Product weight: 6.5kg
MIW71-2	Temperature Display: Displays the temperature of the welding tip with a thermocouple. Advanced Functions: Includes error signal output, program selection, and air pressure detection (sensor required). Voltage Output: Outputs the tip temperature as a voltage signal. Audible Alert: Buzzer activation for detachment timing ■Tip Block Type: Designed for precise and efficient operation.	Input voltage: AC 200V Power consumption: 364W Air pressure: 0.4MPa to 0.5MPa Welding time: 5 to 15 sec Welding tip size: Special heat tip Product dimensions: 400(W)×330(D)×160(H) Product weight: 12.5kg
MIW72-1	Dual-Point Welding Control: Supports control for welding at two points. Temperature Display: Displays the temperature of the welding tip with a thermocouple. Advanced Functions: Includes error signal output, program selection, and air pressure detection (sensor required). Voltage Output: Outputs the tip temperature as a voltage signal. Audible Alert: Buzzer activation for detachment timing. ■Tip Block Type: Designed for precise and efficient dual-point welding operations.	Input voltage: AC 100V Power consumption: 455W Air pressure: 0.4 MPa to 0.5 MPa Welding time: 5 to 15 sec Welding tip size: Standard ø2 to ø7 Product dimensions: 400(W)×330(D)×160(H) Product weight: 14.0kg
MIW72-2	Dual-Point Welding Control: Supports control for welding at two points. Temperature Display: Displays the temperature of the welding tip with a thermocouple. Advanced Functions: Includes error signal output, program selection, and air pressure detection (sensor required). Voltage Output: Outputs the tip temperature as a voltage signal. Audible Alert: Buzzer activation for detachment timing. ■Tip Block Type: Designed for precise and efficient dual-point welding operations.	Input voltage: AC 200V Power consumption: 707W Air pressure: 0.4MPa to 0.5MPa Welding time: 5 to 15 sec Welding tip size: Supports special heat tip Product dimensions: 400(W)×330(D)×160(H) Product weight: 18.5kg

■Temperature control type: Secure stable quality with temperature setting and management functions

Product	Features	Specifications
MIW81-1／MIW81-2	Dual Control Methods: Select between temperature control and timer control modes. Control Backup: Temperature control recording function allows operation in timer control mode if a thermocouple malfunction occurs. Advanced Functions: Includes error signal output, program selection, and air pressure detection (sensor required). Voltage Output: Outputs the tip temperature as a voltage signal. Audible Alert: Buzzer activation for detachment timing. ■Tip Block Type: Designed for precise and efficient dual-point welding operations.	Input voltage: AC100V/200V Power consumption: 270W～370W Air pressure: 0.4MPa～0.5MPa Welding time: 5 to 15 sec Welding tip size: Supports special heat tip. heat tip size ø2.5 to ø7 Product dimensions: 330(W)x280(D)x160(H) Product weight: 9kg/12kg

■Multiple Points Machine

Munekata offers custom-made solutions tailored to your specific requirements. We can propose multi-point machines with various specifications to meet your needs. Please feel free to contact us for more information and to discuss your custom solution.


Tabletop Model Ideal for welding small products (workpieces) at one or a few points. This compact design is perfect for precision tasks in smaller work environments.	Floor Model Suitable for welding large products (workpieces) with multiple welding points. We offer a wide variety of types, including front-and-back sliding combinations and turntable models, to meet diverse welding needs.

Control Unit Can be integrated into welding equipment for seamless operation and enhanced control.

Basic Welding Process The Impulse Welder controls the welding conditions as follows. The roles of each step are described below. Here is how the Impulse Welder controls the conditions of welding. The roles of each process are described below.

Here is how the Impulse Welder controls the conditions of welding. The roles of each process are described below.

1.Timer control method

2.Phase (power control) method

Heating and welding can both be accomplished through the heating process. Heating, welding, and cooling can each be input via a timer. By setting the phase control level (heating), the angle of temperature increase can be adjusted. Additionally, by setting the phase control level (welding), the welding time can be maintained at a stable temperature. 3.Temperature control method

Set the temperature for the heating, post-welding heating, and cooling end phases. This allows for stable heating and welding processes. Additionally, the system can adapt to fluctuations in power supply voltage (within specified limits).