Screen printer having mask pressing device for determining tension of mask by calculating mask deflection amount
US11511535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Oct 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/163
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A screen printer that measures a tension of a mask in a machine, including a mask holding device configured to hold a mask; a board device configured to position a board from below with respect to the mask held by the mask holding device; a squeegee device configured to apply and spread a cream solder on an upper surface of the mask; a mask pressing device configured to press the mask at a set pressure by a pusher which is installed on an upper travelling device or a lower travelling device with respect to the mask; a mask measurement device, installed on the upper travelling device or the lower travelling device to be opposed to the pusher, which is configured to measure a height of the mask; and a tension measurement device configured to calculate a tension of the mask based on a measured value of the mask measurement device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.