4results about How to "No mixing" patented technology

This invention relates to a wafer processing method for etching two metals within the same etching chamber. It incorporates wafer cleaning and spin-drying between the two metal etching processes to ensure the cleanliness of the chamber. Simultaneously, by controlling the wafer rotation speed and the recovery tray rotation speed, a gradient is created between the positions L1 and L3 where the etching solution is splashed onto the recovery tray during the two etching processes and the position L2 where deionized water is splashed onto the recovery tray during the intermediate cleaning process. In step four, L2 is greater than L1 in step two, ensuring that the deionized water completely covers and cleans the first etching solution on the recovery tray. In step six, L3 is less than L1 in step two, so even if a trace amount of the first etching solution remains between L1 and L2, sufficient space exists between L3 and L1 where the second etching solution is splashed onto the recovery tray, preventing mixing of the two solutions. Furthermore, this invention does not require further modifications to the equipment structure, and the process flow is more seamless.

The invention discloses a character printing process for a PCB board, which specifically comprises the following steps: S1, loading a prepared PCB board onto a conveying device, moving the PCB board toward a printer through a conveyor belt, and stopping the PCB board at the printer; S2, at this time, the PCB board is located on the inner side of a supporting positioning mechanism, the supporting positioning mechanism comprises relatively distributed positioning components and positioning cylinders, the PCB board is positioned by the positioning components and the positioning cylinders, and the inner surface of the conveyor belt at the PCB board is supported by the supporting components, and two positioning plates in the positioning components are driven to move relative to each other while being supported by the supporting components; the invention can stably support the PCB board during the printing process of the PCB board, and will not fall or sway, thereby preventing the side deviation of the character printing, and positioning both sides of the PCB board while supporting the PCB board, thereby ensuring the accuracy of the printing process position of the PCB board, and allowing both the front and back sides of the PCB board to be printed, thereby improving the surface character printing quality and printing process stability of the PCB board.

The invention belongs to the field of agricultural equipment, and discloses a sand hollow plum fruit sorting and picking basket which comprises three parts: firstly, a cuboid plastic hollow turnover basket with 3-5 rows of rectangular side holes in the side surface; secondly, two pieces of plywood are placed in the basket in parallel with the short side face of the turnover basket and serve as partition plates; and the straps are tied on hollow handles in the middle of the upper parts of the short side surfaces at the two ends of the turnover basket and are used for obliquely carrying the sorting basket. According to the invention, the cuboid hollow plastic turnover basket with the rectangular side holes is selected, so that the partition plates are simple to process and easy to place or disassemble; two plywood plates are selected as partition plates and placed in the basket to be parallel to the short side face of the turnover basket, the interior of the basket is divided into three sections with the volume capable of being flexibly adjusted, and the partition plates are not prone to deformation when the turnover basket is filled with fruits. The sorting basket is obliquely carried by the straps, so that the sorting basket is suitable for being picked by silver workers, and damage of fruits and fruit powder on the surfaces of the fruits can be reduced as much as possible by lightly taking and placing the fruits during picking.

The utility model discloses a colored master batch mixing and stirring device, relates to the technical field of colored master batches, and aims to solve the technical problem that the stirring space in a box body cannot be adjusted according to the quantity of materials. According to the technical scheme, a stirring cover is installed on the top of the stirring barrel, a feeding port is formed in the stirring cover, a discharging port is formed in one side of the stirring barrel, a stirring shaft is further arranged on the stirring cover, the stirring shaft penetrates through the stirring cover and extends into the stirring barrel, a plurality of stirring blades are arranged on the stirring shaft, and the stirring blades are arranged on the stirring cover. A rotating assembly for driving the stirring shaft to rotate and a lifting assembly for changing the stirring space in the stirring barrel are arranged on the stirring cover, the lifting assembly acts on the top of the stirring shaft, and a reset assembly matched with the lifting assembly is arranged at the bottom of the stirring shaft. The utility model aims to provide a colored master batch mixing and stirring device.