Waterborne polyurethane synthetic leather foaming device

The utility model belongs to the technical field of synthetic leather, and particularly relates to a waterborne polyurethane synthetic leather foaming device which comprises a foaming furnace, the side wall of the foaming furnace is fixedly connected with a feeding hole; the foaming furnace is communicated with the feeding hole; the side wall of the feeding hole is fixedly connected with a third water pipe; a first water pipe is detachably mounted on the side wall of the third water pipe; the first water pipe is communicated with the third water pipe; a second water pipe is detachably mounted on the side wall of the third water pipe; the second water pipe is communicated with the third water pipe; through the arrangement of the first water pipe and the third water pipe, heat emitted by the foaming furnace can be effectively recycled and utilized, the probability that the foaming effect is not ideal or fails due to the fact that materials to be foamed are not preheated is effectively reduced, the overall relia