| 主权项 |
1. A semi-automatic book sewing machine, comprising:
a base with a book storage region, a spiral coil storage region and a coiling rack thereon and a base fixture block at one side; an actuation device with a mobile platform, a motor, a rotary drum, a bottom panel, a manual adjustment kit, two slip joint plates, a linkage, at least a push-pull member, a binder plate and a touch switch, wherein the mobile platform which is opposite to and glidingly contacts the base has a first elliptical hole, and wherein the motor is installed on the mobile platform for output of a rotary force, and wherein the rotary drum mounted on the mobile platform and connected to the motor is driven to spin locally by the motor, wherein the bottom panel installed on the bottom of the mobile platform develops a second elliptical hole and comprises a panel fixture block at one side; the manual adjustment kit comprising a shaft; a first cam eccentrically connected to the shaft and held in the first elliptical hole; a second cam eccentrically connected to the shaft and held in the second elliptical hole; and a rotary knob connected to and coacting with the shaft is used in driving the mobile platform and the bottom panel for displacement; the two slip joint plates glidingly contact both the base and the mobile platform; the linkage is connected between the two slip joint plates; the push-pull members are connected to the linkage for outward and inward movements back and forth; the binder plate pivotally fitted at the linkage communicates with the push-pull members for pivotal compression and separation under effect of the push-pull members; the touch switch installed on the mobile platform is used to control and deactivate the motor when the touch switch is contacted. |
