Four Color Semi-Automatic Pad Printing Machine with Conveyor

Product Description

What's pad printing?

Pad printing is a printing process that can transfer a 2-D image onto a 3-D object. This is accomplished using an indirect offset (gravure) printing process that involves an image being transferred from the cliché via a silicone pad onto a substrate. Pad printing is used for printing on otherwise impossible products in many industries including medical, automotive, promotional, apparel, and electronic objects, as well as appliances, sports equipment and toys. It can also be used to deposit functional materials such as conductive inks, adhesives, dyes and lubricants.

What's the printing cycle of pad printing machine?

Pad printing cycle

1.From the home position, the sealed ink cup (an inverted cup containing ink) sits over the etched artwork area of the printing plate, covering the image and filling it with ink.

2.The sealed ink cup moves away from the etched artwork area, taking all excess ink and exposing the etched image, which is filled with ink. The top layer of ink becomes tacky as soon as it is exposed to the air; that is how the ink adheres to the transfer pad and later to the substrate.

3.The transfer pad presses down onto the printing plate momentarily. As the pad is compressed, it pushes air outward and causes the ink to lift (transfer) from the etched artwork area onto the pad.

4. As the transfer pad lifts away, the tacky ink film inside the etched artwork area is picked up on the pad. A small amount of ink remains in the printing plate.

5. As the transfer pad moves forward, the ink cup also moves to cover the etched artwork area on the printing plate. The ink cup again fills the etched artwork image on the plate with ink in preparation for the next cycle.

6 .The transfer pad compresses down onto the substrate, transferring the ink layer picked up from the printing plate to the substrate surface. Then, it lifts off the substrate and returns to the home position, thus completing one print cycle.

Applications

It's suitable for printing logo or letter on plastic, metal product with multi color.

Features of machine

1.Micro computer controls all functions and actions, high level of automation and easy operation.
2.Four-digit automatic counter. 
3.Adjustable printing stroke and speed, can meet all different printing requests.
4.The title angle of working table can be adjusted slightly up-and-down, left-and-right and level. very convenient to calibrate.
5.Printing & ink-return are controlled by pneumatic system with pressure adjustment function.
6.Steady micro computer controller. 
7.Bright & clear blue monitor to show machine status at any time.
8.Separated speed control for printing and ink-return.

9.The machine can be modified to sealed ink cup system as well