Rear beam roller mechanism

Abstract

A rear beam roller mechanism includes two transmission modules pivotally mounted on a machine base at intervals, two oscillating modules respectively mounted on the transmission modules, and a tension wheel module and a roller module spaced vertically across the oscillating modules. The transmission shaft of one of the transmission modules can be driven by a tension adjustment mechanism. Each oscillating module can be rotated back and forth by the rotation of the transmission shaft. The roller module includes a central shaft detachably mounted across the oscillating modules and a roller sleeved outside the central shaft. The tension wheel module is parallel to the roller and can be moved back and forth relative to the roller by the oscillating modules. The detachable design of the roller module within the oscillating modules facilitates the S-shaped yarn feeding configuration of the warp yarns.

Claims

1. A rear beam roller mechanism suitable for mounting on the machine base of a weaving machine and connected to a tension adjusting mechanism, the machine base having two mounting seats spaced apart laterally, the rear beam roller mechanism comprising: two transmission modules pivotally mounted on the mounting seats, each transmission module having a transmission shaft rotatable relative to the corresponding mounting seat about a left-right extending axis, wherein one of the transmission shafts is connectable to the tension adjusting mechanism and can be driven by the tension adjusting mechanism to rotate relative to the corresponding mounting seat; two swing modules fixed to the transmission shafts, each swing module having a bearing groove radially recessed along the axis, each swing module being driven by the rotation of the corresponding transmission shaft to swing back and forth; A roller module includes a central shaft coaxial with the axis and detachably mounted across the bearing grooves of the oscillating modules, and a roller rotatably mounted outside the central shaft; and a tension wheel module rotatably mounted across the oscillating modules and parallel to the roller at a distance, the tension wheel module being driven by the oscillation of the oscillating modules to move back and forth relative to the roller.

2. The rear beam roller mechanism as described in claim 1, wherein, Each of the swing modules has a swing seat unit mounted on the corresponding drive shaft, a positioning unit that positions the drive shaft in the swing seat unit, and a support unit that is fixed in the swing seat unit and defines the support groove, with the tension wheel module straddling the swing seat units.

3. The rear beam roller mechanism as described in claim 2, wherein, Each drive shaft passes through the corresponding swing seat unit along the axis, each swing seat unit has an inner side facing the other swing seat unit, each positioning unit has a C-shaped buckle sleeved on the corresponding drive shaft and abutting against the inner side of the swing seat unit, and a locking fastener that drives the C-shaped buckle to be tightly clamped to the drive shaft.

4. The rear beam roller mechanism as described in claim 2, wherein, The central shaft has two mounting ends that extend out of the roller from opposite sides and are respectively disposed in the bearing grooves. Each mounting end has a radially penetrating fixing hole. Each bearing unit has a bearing seat that defines the bearing groove, a plurality of first locking members that lock the bearing seat to the corresponding swing seat unit, and a second locking member that passes through the fixing hole of the corresponding mounting end and locks the mounting end to the bearing seat.

5. The rear beam roller mechanism as described in claim 2, wherein, Each swing seat unit includes a swing seat through which the corresponding drive shaft passes, and a limiting cover covering the swing seat. Each swing seat has an inner side facing another swing seat unit and a swing end that protrudes radially outward relative to the drive shaft. The swing end has an upper-facing mounting groove exposed on the inner side. The tension wheel module includes two bearings respectively embedded downward in the mounting grooves, and a tension wheel with its left and right ends respectively mounted on the bearings and parallel to the roller. The limiting covers are respectively disposed on the swing ends and respectively cover the openings of the mounting grooves, thereby limiting the bearings in the mounting grooves.

6. The rear beam roller mechanism as described in claim 1, wherein, Each of the transmission modules also includes a bearing mounted on the corresponding mounting base, and each transmission shaft extends to the left and right through the corresponding bearing.

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