公开(公告)号：EP0159676A3

公开(公告)日：1988-07-27

申请号：EP85104780

申请日：1985-04-19

申请人： Precision Handling Devices, Inc.

发明人： Kerivan, Leo J.

IPC分类号： B41J11/30 ,  B41J11/66

CPC分类号： B41J11/66 ,  B41J11/30 ,  Y10T225/14 ,  Y10T225/16 ,  Y10T225/343 ,  Y10T225/35

摘要： An overhead unit used with a printer having a platen for feeding continuous, fan-folded, edge perforated forms. The tractors which engage the feed perforations on the forms are driven with the platen. The unit automatically bursts the side perforations along the margins of the forms where the feed perforations are located by the use of flexural members which extract energy from the forms feed and oscillates to shear the side perforations. Bursting of the cross perforations which separate successive forms is carried out by a pivotally mounted, lever actuated bar which engages the platen and forms a toggle therewith to engage the successive forms against the platen just below the cross perforations; the toggle being arranged to tighten and increase the clamping force, as the form is pulled away from the platen when bursting the cross perforations. Precision feeding of the forms so as to enable printing of high quality precise images on the forms is facilitated by a roller assembly including rollers engaging the outside of the loop on the infeed or upstream side of the platen to remove any platen wave due to differential displacement of the forms as they travel with linear motion through the tractors and with rotational motion around the platen. These rollers also steer the form to counteract lateral meandering thereof on the platen. Other rollers on the infeed side of the tractors wrap the forms to at least a 90° arc to eliminate positive tents at the cross perforations. Backlash is removed by a diagonally split collet and tapered sleeve which controls the clearance between the tractor drive shaft and the sprockets of the tractors. Additional rollers on the drive shaft and the support shaft for the tractors, which can be used together with fingers extending from the support shaft, stiffen the forms between the tractors to facilitate bidirectional feeding thereof and bursting by the shearing flexures.

摘要翻译： 与具有用于供给连续的扇形折叠的边缘穿孔形式的压板的打印机一起使用的顶置单元。 拖拉机与表格上的进料穿孔接合。 该单元通过使用弯曲构件自动地破裂侧孔，该弯​​曲构件从形式进料中提取能量并振荡以使侧面孔穿透。 交叉穿孔的破裂是通过枢转安装的杠杆致动杆来进行的，该杠杆接合压板并形成一个肘节，以使连续的形式抵靠刚好在十字穿孔下方的压板; 所述肘节被布置成当突出交叉穿孔时将所述形式从所述压板拉开时，以紧固并增加所述夹紧力。 包括在压板的进料或上游侧接合回路外侧的辊的滚子组件消除了当形状随着通过拖拉机的直线运动并且围绕压板的旋转运动而移动的形状的差异移位时的任何压板波形。 这些辊子还引导形式以抵消压板上的侧向弯曲。 拖拉机进料侧的其他辊子将形状包裹至少90°弧度，以消除交叉穿孔处的正面帐篷。 齿间隙通过对角分解的夹头和锥形套筒移除，该套筒控制拖拉机驱动轴和拖拉机的链轮之间的间隙。 驱动轴上的附加辊和用于拖拉机的支撑轴，其可以与从支撑轴延伸的手指一起使用，从而加强了拖拉机之间的形状。

公开(公告)号：EP0200869A2

公开(公告)日：1986-11-12

申请号：EP86102800.9

申请日：1986-03-04

申请人： Precision Handling Devices, Inc.

发明人： Hubbard, John D. ,  Kerivan, Leo J.

IPC分类号： B41J11/30

CPC分类号： B41J11/30

摘要： A tractor for feeding perforated webs, such as perforated paper, to present successive lines for printing in a computer printer, typewriter or the like has a frame which locates a sprocket and a belt having pins projecting from the pitch line of the belt and lugs which are driven by the sprocket. In order to provide precision feeding of the web and to minimize drag and jamming, the lid is arranged with respect to the frame so that the web is maintained at or substantially at the pitch line of the belt in the region where the pins enter the perforations, are engaged by the perforations and leave the perforations. The distance between the surface of the lid which faces the belt and the belt surface is limited such that the perforations contact the pin surface below a critical position where the web clings to the pins. This is the position of repose where the angle between the surface of the belt and a line from the position of repose perpendicular to a tangent to the pin surface at that position which intersects the belt surface is equal to the arc tangent of the coefficient of friction between the web and pin materials. The lid surface is preferably provided by a rib extending the length of the lid so as to overlie and extend beyond the aforesaid region of entry and engagement of the pins and web perforations. This rib has a wall which provides a thrust surface against which the pins in the region can bear to accommodate the side thrust toward the center of the web when the web is driven by two tractors engaging rows of perforations along the opposite edges of the web.

公开(公告)号：EP0200869A3

公开(公告)日：1988-07-13

申请号：EP86102800

申请日：1986-03-04

申请人： Precision Handling Devices, Inc.

发明人： Hubbard, John D. ,  Kerivan, Leo J.

IPC分类号： B41J11/30

CPC分类号： B41J11/30

摘要： A tractor for feeding perforated webs, such as perforated paper, to present successive lines for printing in a computer printer, typewriter or the like has a frame which locates a sprocket and a belt having pins projecting from the pitch line of the belt and lugs which are driven by the sprocket. In order to provide precision feeding of the web and to minimize drag and jamming, the lid is arranged with respect to the frame so that the web is maintained at or substantially at the pitch line of the belt in the region where the pins enter the perforations, are engaged by the perforations and leave the perforations. The distance between the surface of the lid which faces the belt and the belt surface is limited such that the perforations contact the pin surface below a critical position where the web clings to the pins. This is the position of repose where the angle between the surface of the belt and a line from the position of repose perpendicular to a tangent to the pin surface at that position which intersects the belt surface is equal to the arc tangent of the coefficient of friction between the web and pin materials. The lid surface is preferably provided by a rib extending the length of the lid so as to overlie and extend beyond the aforesaid region of entry and engagement of the pins and web perforations. This rib has a wall which provides a thrust surface against which the pins in the region can bear to accommodate the side thrust toward the center of the web when the web is driven by two tractors engaging rows of perforations along the opposite edges of the web.

公开(公告)号：EP0159676A2

公开(公告)日：1985-10-30

申请号：EP85104780.3

申请日：1985-04-19

申请人： Precision Handling Devices, Inc.

发明人： Kerivan, Leo J.

IPC分类号： B41J11/30 ,  B41J11/66

CPC分类号： B41J11/66 ,  B41J11/30 ,  Y10T225/14 ,  Y10T225/16 ,  Y10T225/343 ,  Y10T225/35

摘要： An overhead unit used with a printer having a platen for feeding continuous, fan-folded, edge perforated forms. The tractors which engage the feed perforations on the forms are driven with the platen. The unit automatically bursts the side perforations along the margins of the forms where the feed perforations are located by the use of flexural members which extract energy from the forms feed and oscillates to shear the side perforations. Bursting of the cross perforations which separate successive forms is carried out by a pivotally mounted, lever actuated bar which engages the platen and forms a toggle therewith to engage the successive forms against the platen just below the cross perforations; the toggle being arranged to tighten and increase the clamping force, as the form is pulled away from the platen when bursting the cross perforations. Precision feeding of the forms so as to enable printing of high quality precise images on the forms is facilitated by a roller assembly including rollers engaging the outside of the loop on the infeed or upstream side of the platen to remove any platen wave due to differential displacement of the forms as they travel with linear motion through the tractors and with rotational motion around the platen. These rollers also steer the form to counteract lateral meandering thereof on the platen. Other rollers on the infeed side of the tractors wrap the forms to at least a 90° arc to eliminate positive tents at the cross perforations. Backlash is removed by a diagonally split collet and tapered sleeve which controls the clearance between the tractor drive shaft and the sprockets of the tractors. Additional rollers on the drive shaft and the support shaft for the tractors, which can be used together with fingers extending from the support shaft, stiffen the forms between the tractors to facilitate bidirectional feeding thereof and bursting by the shearing flexures.

摘要翻译： 与打印机一起使用的高架单元，带有台板，用于输送连续的，扇形折叠的边缘穿孔形式。 与模板上的进给穿孔接合的拖拉机由压板驱动。 该装置通过使用从模板进料中提取能量并振荡以剪切侧孔的弯曲构件自动沿着穿孔所在的形状边缘沿侧面穿孔。 分开连续形式的十字形孔眼的爆裂由枢转安装的杠杆致动杆进行，该杠杆致动杆接合台板并与台板形成肘节以使相继的形式抵靠在正好位于十字形孔眼下方的台板上; 肘节被设置为收紧和增加夹紧力，因为当破裂十字孔时，模板被拉离压板。 模具的精确馈送使得能够在模板上打印高质量的精确图像，这通过辊组件促进，所述辊组件包括辊子，所述辊子在台板的进给侧或上游侧与环的外侧接合，以去除由于差动位移引起的任何台板波 当它们以线性运动通过拖拉机并且围绕压板旋转运动时传播。 这些辊子还可以转动模板以抵消台板上的侧向弯曲。 拖拉机进料侧的其他滚轮将模板包裹至少90°弧形，以消除十字孔处的正面帐篷。 齿隙通过对角线分开的夹头和锥形套筒来控制拖拉机传动轴和拖拉机链轮之间的间隙。 驱动轴和拖拉机支撑轴上的附加滚轮可与从支撑轴上伸出的手指一起使用，加强了拖拉机之间的模板，以方便双向进给和剪切挠曲。