Patent FR-2899827-A1 (FR)
Title: Forging machine useful in the manufacture of coins, comprises support having lower wall, side walls and guide plates fixed to sidewalls of support, rotating units, and unit forming mold mounted at interior of receiving space
Inventor: CHANG YUN TE
IPC: B21J13/06
Filed: 2006-04-13
Abstract: The forging machine comprises a support (2) having a lower wall, two side walls (22) extending towards a height from left and right sides of the lower wall and two guide plates fixed to the sidewalls of the support, two first rotating units having first rollers exposed from the guide plate (23), an unit forming a mold mounted at an interior of a receiving space and entering in contact with the first rollers, and two second rotating units mounted on an upper part, which is close to rear end of the support. The forging machine comprises a support (2) having a lower wall, two side walls (22) extending towards a height from left and right sides of the lower wall and two guide plates fixed to the sidewalls of the support, two first rotating units having first rollers exposed from the guide plate (23), an unit forming a mold mounted at an interior of a receiving space (24) and entering in contact with the first rollers, and two second rotating units mounted on an upper part, which is close to rear end of the support. Each of the side walls of the support has a lower part to which the guide plate is fixed, and an upper part extending above the lower part. The lower wall and the sidewalls of the support and the guide plate are confined by the receiving space. The two first rotating units are mounted on the guide plate, which is close to a front end of the support. The second rotating units have second rollers exposed from the upper part of the support. A sliding body (50) has left and right upper flanges, which are resting at the top of the guide plates to get in contact with the second rollers. Each of the left and right lower side walls of the support comprises a first steel plate placed in contact with a roller with respect to the first rollers. Each of the left and right upper flanges comprises a second steel plate placed in contact with a roller with respect to the second rollers. The upper part of each sidewalls have a cavity, and a part of wall connecting the cavity, which extends at one side of the support of second roller in front of the sliding body. Each of the second rotating units comprise a support of second roller, which is disposed within the cavity, a second tightening plate inserted in the part of the wall connecting the cavity and the support of second roller, a setting screw, which is inserted in the second tightening plate to move the plate linearly within the sliding groove, a constraint element, which tightens the support of second roller to move in a direction towards the part of wall connecting the cavity, a fixing bolt extending through the part of wall connecting the cavity and inserted by threads inside of the support of second roller, and an adjustment screw across the part of upper plate of the second tightening plate and inserted by threads in the part of the bottom plate. A revetment of side wall extends horizontally above the upper end of the guide plate, and an inner face of side wall extends vertically downwards from the revetment of the side wall and making side of the sliding body. The support of second roller comprises a side wall of support making side of the wall, which is connected to the cavity, and an inclined surface. The second tightening plate is laid out between the part of wall connecting the cavity and the inclined surface, and has two opposite sides of which a primary side comes into contact with the part of wall connecting the cavity and the other side comes in contact with the inclined surface. The second tightening plate slides over the inclined surface to move the support of second roller in a direction substantially perpendicular to the part of the wall connecting the cavity. The side wall of the support comprises a groove with sliding face on the part of wall connecting the cavity. The inclined surface is formed in the sliding groove, and the second tightening plate is inserted inside the sliding groove. The fixing bolt has a head extending towards the part of the wall connecting the cavity, and the constraint element comprising spring washers arranged around the fixing bolt and between the head and the part of wall connecting the cavity. The inclined surface is divided into an upper and a lower surface, which is inclined in two different directions. The groove is divided into an upper groove having an upper surface, which gradually decreases downwards and a lower groove having a lower surface, which gradually decreases upwards. The second tightening plate is divided into upper and lower plates, which are inserted respectively in the parts of upper and lower grooves.