Working Principle and Classification of Dip Coater
The dip coater is also called dip pull-up machine, vertical pull-up machine, dip-coating machine, vertical pull-up coating machine, etc. The vertical pull-up film coating machine is specially designed for the study of liquid film growth , so that the sample that needs to grow film is dipped in the coating liquid, and then is vertically pulled back to dry the sample surface film naturally or in a constant temperature drying oven.
The working principle of the pull-up film coating machine is to use a pulling device to replace the manual operation process to make the sample dip or pull out of the liquid and grow a film on the sample surface. There are usually two types of drive methods: pulling wire drive and lead-screw drive. Both drive methods try to ensure that the sample runs smoothly without vibration when the sample is pulled. This ensures that a uniform film is formed on the sample surface.
The advantages of the linear pulling machine: The linear pulling machine runs more smoothly, the pulling wire can relieve the a certain amount of vibration generated by motor, the vibration amount generated by the sample is almost negligible, and the surface quality of the prepared film is higher. The disadvantages: Due to the limitations of pulling wire, the weight of the samples that can be pulled is relatively small, and the pulling wire will be worn to a certain extent during the operation process and needs to be replaced frequently. Therefore, this kind of pulling machine is especially suitable for preparing small samples at laboratories, and more accurate experimental results can be obtained.
The advantages of the lead-screw drive pulling machine: It can hold larger and heavier samples, the drive mechanism is durable, and even if it is used for a long time, there is no need for frequent maintenance. Disadvantages: The motor is in direct contact with the lead screw, and there will be a certain vibration during operation. This method is easy to cause liquid surface vibration when the sample enters and leaves the liquid, resulting in an uneven film.
Under normal circumstances, the dipping time, drying time, pulling speed, pulling distance, and cycle pulling times can be set according to the needs of the pulling machine during the working process. According to the experimental requirements, it can be equipped with a constant temperature drying box or be dried in protective gas for thin film growth.
SHENYANG KEJING AUTO-INSTRUMENT CO., LTD. manufactures a wide variety of pulling and coating machines, including linear pulling machines, vertical pulling machines, and high-throughput pulling machines.
Linear pulling machines can be divided into many type
Divided by speed: millimeter type, micron type, nano-type
Divided by temperature: normal temperature type, heat preservation type, high temperature type
Divided by control method: semi-automatic type and fully automatic type
Divided by control mode: single-chip control type and touch screen control type
Divided by workstation: single-workstation type and multi-station type
Vertical pulling machines include desktop small vertical pulling machine and large-scale vertical pulling machine for large flake samples, both of which can be used at room temperature or be equipped with a constant temperature drying oven.
High-throughput pulling machines can be divided into two types: normal temperature type and constant temperature type.
The company's various types of pulling film coating machines can meet the needs of different customer groups and market. At present, the company's vertical pulling machines with head screw drive adopt a split structure for the control system and the main machine part. The advantages of this control method: ①When repairing the equipment or changing the program, the whole machine does not need to be disassembled or changed, and only the main machine part or the controller needs to be disassembled or changed; ②the control system and the main machine part are separated to avoid the interference of the control system to the main machine motor; ③when preparing film that is harmful to the human body, the control system can be kept away from the main machine part to reduce the harm to the human body.
Examples of dip coaters manufactured by SHENYANG KEJING AUTO-INSTRUMENT CO., LTD.:
Models of linear programmable pulling machine without incubator: PTL-MM01, PTL-MM02 | 1. Power supply: 220V 2. Power: 50W 3. Pulling speed: 1 mm/min-200mm/min 4. Effective dipping length: 60mm 5. Dipping and drying time setting: 1-999s 6. The number of times for pulling: 1-20 times 7. Pulling load: ≤100g 8. Sample size: 75mm×25mm×2.5mm |
Models of linear programmable pulling machine with incubator: PTL-MMB01, PTL-MMB02, PTL-UMB, PTL-NMB, PTL-OV5P, PTL-OV6P, PTL-MMB02-200 | 1. Power supply: 220V 2. Temperature detector: RT-100℃ 3. Pulling speed: 1µm/s-500µm/s 4. Effective dipping length: 60mm 5. Dipping and drying time setting: 1-999s 6. The number of times for pulling: 1-20 times 7. Pulling load: ≤100g 8. Sample size: 75mm×25mm×2.5mm Incubator technical parameters: 1. Temperature range: room temperature +5~100℃ 2. Temperature fluctuation: ±1.5℃ 3. Dimension: 460×510×695 |
Models of vertical pulling machine: PTL-MM02-200, PTL-MM02-500, PTL-MM02-1000 | 1. Power supply: 220V (50Hz) 2. Running (up and down) speed: 1mm/min-200mm/min 3. Travel distance: 270mm 4. Sample size: 310×260×1~5 mm 5. Pulling load: ≤5.5kg 6. Two-phase hybrid stepper motor: The stepping angle is subdivided by the driver. 7. Dipping and drying time setting: 1-999s 8. The number of times for pulling: 1-20 times |
Models of multi-station pulling machine: PTL-MM02-8P, PTL-MMB02-8P | 1. Power supply: 220V 50Hz 2. X-axis speed: 500mm/min-5000mm/min 3. Z-axis speed: 1mm/min-200mm/min 4. Effective dipping length: 65mm 5. Sample size: 75mm×25mm×2.5mm 6. The number of samples to be pulled at the same time: 5 7. Number of pulling workstation for each sample: 8 8. Dipping and drying time setting: 1-999s 9. The number of cycle times: 1 - 999 times |
Model of high temperature pulling machine: PTL-HT | 1. Power supply: 220V (50Hz) 50A 2. Total power: 3KW (including heating part) 3. Pulling speed: 1mm/min-200mm/min 4. Dipping and drying time setting: 1-999s 5. Pulling load: ≤ 1000g 6. Temperature detector: RT-800℃ 7. Effective dipping length: 60mm 8. Cup size: (D)φ40(mm)×(d)φ36(mm)×(H)73(mm) 9. 75(mm)×25(mm)×1~4(mm) 10. Ambient temperature of 5~40℃, relative humidity of not more than 85%RH, with no strong earthquake source or corrosive gas around the equipment. High temperature furnace technical parameters: 1. Power supply voltage: 220V50Hz 2. Maximum temperature: 1000℃ 3. Temperature control accuracy: ±1° 4. Furnace size: Φ80×330 5. Dimension: 640×385×540 |
Note: The parameters of the above products are only examples of individual product parameters, and the actual parameters should depend on the specific product.