Air pressure type heat transfer printing machine

Abstract

The invention discloses an air pressure type heat transfer printing machine, belongs to the technical field of heat transfer printing industry, and solves the technical problems that a large amount of time, energy and manpower are consumed due to the defects that a traditional three-dimensional polygon heat transfer printing process is large in labor, long in consumed time and high in reject ratio, and manufacturing can only be conducted through a large assembly line and a large high-temperature furnace, and the like. Therefore, the heat transfer printing cost of the three-dimensional polygonal structure is high for a long time, and large-area popularization and application cannot be realized. The invention aims to accelerate the speed and efficiency of the heat transfer printing process of the three-dimensional polygonal structure, improve the qualification rate of the heat transfer printing process of the three-dimensional polygonal structure, ensure that heat transfer printing paper is tightly attached to the surface of a workpiece through high air pressure, rapidly heat and keep constant temperature, and separate the heat transfer printing paper from the workpiece through rapid pressure reduction and cooling after transfer printing is completed, so that the heat transfer printing efficiency is improved. Waste of energy, manpower and time in the heat transfer printing process of the three-dimensional polygonal structure is greatly reduced, and bad loss generated in the heat transfer printing process of the three-dimensional polygonal structure is greatly reduced; the other purpose of the invention is to greatly reduce the high cost caused by high investment, high energy consumption and high labor of large equipment such as a large assembly line and a large high-temperature furnace in the heat transfer printing process of the three-dimensional polygonal structure product, and promote the popularity and universality of the heat transfer printing process of the three-dimensional polygonal structure product.

Description

Technical Field

[0001] For a long time, thermal transfer of three-dimensional polygonal structures has been carried out in a traditional way, which has remained unchanged. That is, thermal transfer paper is pasted on each surface of the three-dimensional polygon that needs to be transferred by wet water stickers. After pasting, it needs to be left for several hours to wait for the wet thermal transfer paper to dry naturally before it is moved to the assembly line for a slow, step-by-step heating process from room temperature to high temperature. This heating process is long, and during the heating process, the thermal transfer paper is prone to surface warping, bubbles, and detachment from the product surface due to uncontrollable heat. In addition, this process will cause batches of defective products due to uncontrollable reasons such as climate, temperature and humidity, as well as handling and movement, thereby consuming a lot of time, energy and manpower. Such serious losses have greatly increased the production cost of the thermal transfer process of the three-dimensional polygonal structure, resulting in the long-term high cost of thermal transfer of three-dimensional polygonal structures, and it cannot be popularized and applied on a large scale. Background Art

[0002] The purpose of the invention is to speed up the speed and efficiency of the thermal transfer process of the three-dimensional polygonal structure, improve the qualified rate of the thermal transfer process of the three-dimensional polygonal structure, ensure that the thermal transfer paper is closely attached to the surface of the workpiece through high air pressure, and quickly heat and maintain a constant temperature, and after the transfer is completed, the thermal transfer paper is separated from the workpiece through rapid pressure reduction and temperature reduction, which greatly reduces the waste of energy, manpower and time in the thermal transfer process of the three-dimensional polygonal structure, and greatly reduces the bad loss generated in the thermal transfer process of the three-dimensional polygonal structure; Another purpose of the invention is to significantly reduce the high cost caused by high investment, high energy consumption and high labor in the thermal transfer process of three-dimensional polygonal structure products, and promote the popularity and versatility of the thermal transfer process of three-dimensional polygonal structure products; Summary of the invention

[0003] The purpose of the invention is mainly achieved through the following technical solution 1: after positioning the thermal transfer paper flat on the surface of the three-dimensional polygonal structure product, push it into the cavity of the device, close the hatch, start the air inlet 1 to inject air to pressurize the inside of the cavity, and keep the thermal transfer paper close to the surface of the product through high air pressure. After reaching the set pressure, the air inlet 1 stops injecting air, and the inspection is carried out through the equipment observation port. After that, the air inlet 2 starts to inject high-temperature gas (150-230 degrees), continuously pressurizes, and pushes the pressure exhaust port 1 to exhaust while maintaining the cavity pressure. This process is carried out The air inlet 2 and the pressure exhaust port 1 work uninterruptedly at the same time, quickly replacing the air in the cavity and quickly raising the temperature in the cavity. When the temperature sensor detects that the temperature in the cavity reaches the set temperature, the air inlet 2 and the pressure exhaust port 1 stop working at the same time, constantly maintaining the pressure and temperature in the cavity, allowing the cavity to perform thermal transfer. After the set time is reached, the exhaust port 2 starts to exhaust, and the air inlet 1 starts after the pressure is reduced, quickly replacing the air, and sharply reducing the pressure and temperature in the cavity, so that the thermal transfer paper is quickly separated from the workpiece surface during the process of reducing pressure and temperature, completing the entire process of thermal transfer.

[0004] The purpose of the invention can also be achieved through the following technical solution 2: after the thermal transfer paper is positioned and flatly covered on the surface of the three-dimensional polygonal structure product, it is pushed into the cavity of the equipment, the hatch is closed, and the air inlet is started to inject air to pressurize the inside of the cavity, and the thermal transfer paper is kept close to the three-dimensional polygon through high air pressure. After the set pressure is reached, the air inlet stops injecting air, and the inspection is carried out through the equipment observation port. Then the circulating fan is started to circulate the air in the cavity, and the temperature in the cavity is quickly increased by circulating to the spiral heating tube, and the gas temperature in the cavity is sharply increased to a high temperature (150-230 degrees). When the temperature sensor detects that the temperature in the cavity reaches the set temperature, the circulating fan and the heating system stop working at the same time, and the pressure and temperature in the cavity are kept constant, so that the thermal transfer work can be carried out in the cavity. After the set time is reached, the exhaust port starts to exhaust, and the air inlet is started after the pressure is reduced, and the air is quickly replaced, and the pressure and temperature in the cavity are sharply reduced, so that the thermal transfer paper can be quickly separated from the surface of the workpiece during this process of reducing pressure and cooling, and the entire process of thermal transfer is completed.

[0005] The purpose of the invention can also be achieved through the following technical solution 3: after the thermal transfer paper is positioned and flatly covered on the surface of the three-dimensional polygonal structure product, it is pushed into the cavity of the equipment, the hatch is closed, and the air inlet 1 starts to inject high-temperature gas to pressurize and heat the inside of the cavity. The thermal transfer paper is kept close to the three-dimensional polygon through high air pressure while the temperature in the cavity is quickly raised to a high temperature (150-230 degrees). When the pressure sensor detects that the pressure in the cavity reaches the set pressure, the exhaust port starts to exhaust. When the temperature sensor detects that the temperature in the cavity reaches the set temperature, the air inlet 1 and the exhaust port stop working at the same time, and the pressure and temperature in the cavity are kept constant to allow thermal transfer to be carried out in the cavity. After the set time is reached, the exhaust port starts to exhaust. After the pressure is reduced, the air inlet 2 is started to quickly replace the air, and the pressure and temperature in the cavity are sharply reduced, so that the thermal transfer paper can quickly separate from the surface of the workpiece during the process of reducing pressure and cooling, completing the entire process of thermal transfer.

[0006] Therefore, the present invention has the following advantages: 1. It becomes easy to stick the thermal transfer paper to each surface of the three-dimensional polygon that needs to be transferred. You only need to fix it flat and cover it. There is no need to wait for a long time to dry naturally after sticking the film, which greatly saves manpower and time; 2. It is no longer necessary to use the long-time process of slow heating and slow cooling of the assembly line. The heating and cooling of the present invention are completed in the same fixed cavity, which is small in size and very fast in heating and cooling, greatly saving time waste and energy loss, greatly improving the output of the thermal transfer process, and eliminating the need to invest heavily in building a heating assembly line, which greatly reduces the equipment investment of the thermal transfer process; 3. Completely solve the process defects of thermal transfer paper warping, bubbling, and separation from the product surface in the traditional thermal transfer process. During the heating and constant temperature process, the stable high air pressure in the cavity of the present invention keeps the thermal transfer paper close to the surface of the workpiece throughout the process, greatly improving the transfer effect of thermal transfer and the qualified rate of thermal transfer products; 4. After thermal transfer, there is no need to manually tear off the thermal transfer paper. The thermal transfer paper will fall off naturally through rapid pressure reduction and temperature reduction, which greatly saves labor costs. 5. Unlike the traditional assembly line heating, which requires a team of at least 7 to 8 people to work around the assembly line at the same time, the entire thermal transfer process of the present invention is completed in the same equipment and can be automatically controlled. Only one person is needed to operate it, which greatly reduces the input of personnel and greatly saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a state diagram of technical solution 1 Figure 2 Schematic diagram of the state of technical solution 2 Figure 3 This is a status diagram of Technical Solution 3.

Claims

1. A pneumatic heat transfer machine, characterized in that The thermal transfer process is completed by injecting air or high-temperature gas to generate high pressure and maintaining high pressure and high temperature.

2. The pneumatic heat transfer machine according to claim 1, characterized in that The thermal transfer process is carried out by pressing the thermal transfer paper against the surface of the workpiece through high-pressure and high-temperature gas.

3. The pneumatic heat transfer machine according to claim 1 or 2, characterized in that High pressure is generated by injecting air, and high-temperature gas is injected while maintaining high pressure. The gas in the cavity is quickly replaced and the temperature in the cavity is quickly increased, thereby carrying out the thermal transfer process.

4. The pneumatic heat transfer machine according to claim 1 or 2, characterized in that High air pressure is generated by injecting air, and the gas in the cavity is quickly circulated and heated by the circulating fan and heating system, which quickly increases the temperature in the cavity, thereby carrying out the thermal transfer process.

5. The pneumatic heat transfer machine as claimed in claims 1 and 2, characterized in that The thermal transfer process is carried out by injecting high-temperature gas to generate high air pressure and quickly increase the air pressure and temperature in the cavity.

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