Abstract: An automatic feeding system adapted to arrange a variety of components having different shapes comprises a storage apparatus and a first conveying device. The storage apparatus includes loaded storage devices loaded with the components and unloaded storage devices unloaded with the components. The first conveying apparatus includes a pair of first support frames disposed opposite to each other, a loading conveying apparatus mounted between the first support frames and configured to convey the unloaded storage devices to a loading position to load the components thereon and change the unloaded storage devices to loaded storage devices, and an unloading conveying apparatus mounted between the first support frames and configured to receive the loaded storage devices conveyed from the loading position. The unloading conveying apparatus conveys the unloaded storage devices to the loading conveying apparatus after the components on the loaded storage devices are picked up by a pick-up apparatus.

Abstract: A positioning device that has a support table, two pairs of sliding blocks slidably mounted in the support table, a positioning plate extending vertically at the top of each sliding block, a base on which the support table is supported, a cylinder in the base, a ball in the cylinder, a piston rod slidably mounted in the cylinder and pushing the ball to move upward in a vertical direction, so that the ball drives the two pairs of sliding blocks to move away from each other in the first horizontal direction and the second horizontal direction, respectively, until the positioning plates of the two pairs of sliding blocks abut against four inner walls of the opening of the circuit board, respectively, to allow the electronic device to be received in a positioning slot defined by the positioning plates, and a release mechanism that drives the piston rod to move downward in the vertical direction to allow the two pairs of sliding blocks to be moved toward each other in the first horizontal direction and the second

Abstract: Disclosed in the present invention are a crystalline Form of pyrido[1,2-a]pyrimidone analog, a preparation method therefor and an intermediate thereof,

Abstract: The utility model discloses a novel phase change heat storage device, comprising a housing, wherein the housing is internally provided with a lining; an insulating layer is disposed between the lining and the housing; the lining is internally filled in with a phase change material; a coiled pipe is embedded in the phase change material; the inlet and outlet of the coiled pipe both extend out of the lining and are respectively welded with and communicate with a main water inflow pipe and a main water outflow pipe, so all welds between the coiled pipe and the main water inflow pipe and main water outflow pipe are positioned outside the lining and are not soaked by the phase change material. The lining is provided with at least one partition board; the partition board divides the inner space of the lining into independent spaces such that the phase change material is respectively positioned in the independent spaces divided by the partition board.