Inertial (Pneumatic Motor) Spin Welder

The PSW is a pneumatic motion controlled Inertial (Pneumatic Motor) Spin Welder designed for a wide variety of spin welding applications which do not require part to part orientation. This welder offers a simple approach to assembling parts with circular joints quickly and cost-effectively. Microprocessor control increases overall weld and production quality.

When compared to orientation (servo motor) models, inertial systems typically:

  • Are available at a lower cost as simple pneumatic motors and basic control requirements allow lower equipment pricing.
  • Generate higher operating speeds which often improve joint strength on lower durometer materials such as PE and PP.
  • Allow all process energy (inertia) to be transferred to joint area as part to part contact causes rotation to cease, similar to a brake.
  • Demand low power requirements as welding power is generated pneumatically as opposed to electrically.

Optional Features.

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Standard Features

Ultra-Rigid Rectangular Column minimizes deflection of the system under even the highest pressures.

Modular Design allows adaptability to a variety of production configurations. Controller height may be repositioned or removed from the press and relocated to a user preferred position.

Choice of either 0 - 4,800 RPM or 0 - 16,000 RPM Pneumatic Motor with Roller Bearing Design allows a full range of speeds for flexibility to handle the widest variety of applications.

3.5 Inch Color Touch-Screen User Interface enables programming of weld parameters and several quality management features. Allows the following to be displayed:

  • RPM / Motor Off Height / Hold Time / Total Stroke
  • Resettable Parts Counter
  • Total Machine Cycle Counter
  • Diagnostic Display

Pre-Programmed Inputs for Part Presence, Part Clamp Closed, External Start, & External Cycle Stop.

Pre-Programmed Outputs for Part Clamp & Optional Motor Brake.

Built-In Tachometer provides rotational speed input to microprocessor and increases consistency of the weld cycle. Also allows alarm monitoring of RPM during the welding cycle.

Precision Linear Stroke Encoder allows the system to control multiple process steps including motor off height, stroke height to start actuator deceleration prior to part contact, and engagement of optional electromagnetic brake with an accuracy of +/- 0.005in (+/- 0.127mm). Also allows alarm monitoring of total stroke at the end of each welding cycle.

Welds by Delivery of 100% Stored Inertial or Optionally by Height (when equipped with Optional Electromagnetic Brake) allowing user enhanced control for a wide range of applications.

RPM and Total Stroke Pass/Fail Windows allow user to set min/max alarm limits for bad parts for quality control purposes.

Multi-Level Passcode Protection limits parameter adjustment to qualified personnel only.

5 Weld Program/Setup Memory allows storage for instant recall, minimizing tool change time.

7.9 Inch (200mm) Press Stroke permits loading/unloading with adequate clearance for most parts.

2.5 Inch (63mm) Diameter Pneumatic Cylinder allows more than ample force for most spin welding applications.

Adjustable Stroke Velocity permits control of the vertical speed of the welding head, allowing more precise control for sensitive applications.

Ergonomically Located Dual Cycle Activation Switches ensure operator safety from actuator descent.

Lockable Mechanical Stop prevents shift/migration of stop setting in even the worse vibrating environments.

Sequence of Operation

  • 1.Operator loads part halves into holding fixture and driver.
  • 2.Operator initiates both cycle activation switches.
  • 3.Motor begins rotation and drivers speed (RPM) increases.
  • 4.When target RPM of driver is reached, the actuator moves driver & spinning part half toward stationary fixtured part half.
  • 5.Pneumatic motor is turned off at either user programmed height or automatically at 5mm prior to part halves contacting one another.
  • 6.Operator is permitted to release cycle activation switches after part to part contact is made.
  • 7.Spinning driver's rotation stops when all inertial energy is spent. Parts act as a brake against one another.
  • 8.If Optional Electromagnetic Brake is utilized, the spinning driver's rotation stops by actuation of brake when RPM speed decreases to a user programmed threshold or when reaching a user programmed height. This prevents breakage of solidifying material.
  • 9.Welded parts cool under pressure.
  • 10.Actuator retracts to home position.
  • 11.Operator removes welded part from fixture.