Preparation for thermal transfer processing

Preparation for thermal transfer processing

The thermal transfer processing process is divided into two parts

1. Pre-production preparation for thermal transfer processing:

Schematic diagram of thermal transfer processing process

1.1 The workshop manager arranges the production plan, issues the "Thermal Transfer Processing Production Order", assigns specific tasks to the corresponding machines and personnel, and provides necessary explanations and guidance for the specific tasks.

1.2 After the operator receives the thermal transfer processing task and receives the required workpieces and other production materials, he arranges to adjust the transfer machine for the specified or corresponding needs (such as flat ironing or rolling ironing) or asks the technicians in the workshop to adjust it.

1.3 Install the mold: Install the special clamp for the substrate on the rolling seat or flat push seat or contour seat or special device, and then install it on the workbench of the transfer machine, move the workbench, so that the center of the round ironing or flat ironing substrate is aligned with the center of the ironing furnace spindle; make the right end of the round ironing substrate 20 to 30 mm away from the vertical point of the center of the ironing furnace spindle, and then fix the workbench.

1.4 Adjust the downward pressure distance of the vertical cylinder, that is, the distance between the silicone roller and the substrate, which is generally controlled between 6 and 8 cm. After adjustment, turn the manual descending button to press the hot furnace downward, and adjust the hot stamping surface of the substrate to be parallel to the rubber roller based on the parallelism of the silicone roller. If it is not parallel, you can adjust the angle of the hot stamping seat or the 4 M12 fine-tuning screws connected to the column mounting plate or the electric heating mounting plate or the substrate clamp balance screw. After adjustment, lock all fasteners, and then adjust the fine-tuning nut on the vertical cylinder to adjust the actual pressure required between the rubber roller and the substrate. After reaching the required pressure, tighten the anti-locking nut.

1.5 Install the required hot stamping film on the film placement shaft, and introduce the flower film into the film collection shaft. Adjust the distance between the flower film and the rubber roller, which is generally within 1 to 4 mm. If the distance between the flower film and the rubber roller is too short, it is easy to cause wrinkles due to heat. Adjust the electric eye rod and the two film rack rollers to balance, adjust the height based on the actual space of the hot stamping product, and adjust the flower film to balance. Take the actual pattern of the required hot stamping film as the starting point, adjust the position of the photoelectric eye after the hot stamping center, press down the hot stamping furnace, and ensure that the flower film, rubber roller, and substrate product are aligned.

1.6 Before the trial printing, check whether the fasteners of the lifting mechanism are locked, whether the cylinder fine-tuning anti-locking nut is tightened, whether the power switch and the selection switches are in normal working condition, start the rubber roller motor and the hot stamping furnace spindle to start running. And conduct a trial printing, turn the hot stamping selection to the single-cycle hot stamping mode, press the hot stamping button or the foot switch, and after completing a hot stamping action program, the machine returns to the initial action state.

1.7 According to the actual hot stamping length of the substrate and the speed of the rubber roller, determine the hot stamping time or the stroke of the horizontal push cylinder. Adjust the position of the limit sleeve so that the travel switch controls the film rolling motor to ensure that the film is evenly collected. Press the hot stamping button to complete a hot stamping program. If any abnormality is found, press the emergency stop switch. The working state of the machine immediately returns to the initial state to protect the safety of the rubber roller and the operator.

1.8 After debugging and everything is normal, check again whether the hot rubber roller is rotating and whether the heating tube is heating evenly. First adjust the temperature of the rubber roller to about 100℃, and then increase it to the required hot stamping temperature after automatic constant temperature. The general heating time is 25 minutes.