US 12,257,801 B2
Pressing group for a sintering press for sintering electronic components on a substrate
Nicola Schivalocchi, Gavardo (IT)
Assigned to AMX—AUTOMATRIX S.R.L, Gavardo (IT)
Appl. No. 17/256,119
Filed by AMX—AUTOMATRIX S.R.L., Gavardo (IT)
PCT Filed Jun. 19, 2019, PCT No. PCT/IB2019/055170
§ 371(c)(1), (2) Date Dec. 24, 2020,
PCT Pub. No. WO2020/008287, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 102018000006846 (IT), filed on Jul. 2, 2018.
Prior Publication US 2021/0170708 A1, Jun. 10, 2021
Int. Cl. B30B 11/02 (2006.01); B22F 3/10 (2006.01); B30B 15/34 (2006.01); H01L 21/50 (2006.01); H01L 21/60 (2006.01); H01L 21/67 (2006.01); H01L 23/00 (2006.01)
CPC B30B 11/027 (2013.01) [B22F 3/10 (2013.01); B30B 15/34 (2013.01); H01L 21/50 (2013.01); H01L 21/67103 (2013.01); H01L 24/83 (2013.01); H01L 2021/6015 (2013.01); H01L 2224/83203 (2013.01); H01L 2224/8384 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pressing group for a sintering press to carry out sintering of electronic components on a substrate, the pressing group comprising a multi-stem cylinder having a front head and a rear head together delimiting a compression chamber, wherein:
between the front head and the rear head is interposed an annular sealing element positioned around the compression chamber,
in the rear head an inlet passage is formed for introducing a pressurized fluid into the compression chamber in the rear head;
in the front head pressing stems are slidingly supported, parallel and independent from each other, rear ends of said pressing stems protruding into the compression chamber,
in the compression chamber, an actuating flat gasket extends over the rear ends of the pressing stems in such a way that, when the compression chamber is pressurized, the actuating flat gasket acts on said rear ends to transfer pressure in the compression chamber to each individual pressing stem,
the actuating flat gasket is fixed to the front head by an anchoring frame which engages a peripheral portion of the actuating flat gasket,
the anchoring frame is completely housed in the compression chamber so that the pressurized fluid also acts on said anchoring frame,
wherein the compression chamber forms a bottom wall opposite the actuating flat gasket, wherein the anchoring frame has a rear surface facing and separated from said bottom wall, wherein the compression chamber is radially delimited by a side wall, and wherein the anchoring frame has a side surface facing and separated from said side wall.