2results about How to "Avoid abrasions" patented technology

This invention discloses a PCB edge grinding fixture, comprising a fixture substrate, a movable stage, a pushing device, a guiding device, and an edge grinding device. The movable stage includes a first guide rail and a stage portion. The first guide rail is disposed on the fixture substrate, and the stage portion is slidably disposed on the first guide rail. The pushing device can push the stage portion to slide along the first guide rail. The edge grinding device includes a second guide rail, an edge grinding bracket, and a pressing part. A first industrial oilstone is disposed on the inner side of the edge grinding bracket, and a second industrial oilstone is disposed on the top surface of the edge grinding bracket. The second industrial oilstone is aligned with a height limiting block. The pressing part is disposed on the outer side of the edge grinding bracket and fixedly connected to the fixture substrate. A second compression spring is connected between the pressing part and the edge grinding bracket. This invention can remove burrs from the sides and top surfaces of the PCB circuit board edges, removing burrs cleanly and efficiently, ensuring complete removal without omissions, and providing uniform grinding force to avoid damaging the circuit board.

The utility model provides a kind of for angle stroke valve non-contact installation mechanism, at least two clamping holes are opened in the gripping handle of valve upper portion, positioning hole is opened in the flange plate of valve upper portion, and it is matched with clamping hole, installation mechanism includes the clamping rod matched with clamping hole, the number of clamping rod is equal to the number of clamping hole, the upper portion of clamping rod is provided with connecting plate, the outside of connecting plate is provided with force applying element, the utility model can be clamped into the clamping hole and positioning hole matched with it by clamping rod, then it is tightened operation by the aid of force applying element, it can be realized not to contact angle stroke valve to realize the firm efficient installation or dismounting operation to it, greatly improve the efficiency of installation and dismounting, operation is more convenient and efficient.