公开(公告)号：EP0560361A1

公开(公告)日：1993-09-15

申请号：EP93103943.2

申请日：1993-03-11

申请人： PRECISION HANDLING DEVICES, INC.

发明人： Ferguson, Gregory A.

IPC分类号： F16C19/46 ,  F16C33/46

CPC分类号： F16C19/46 ,  F16C33/4635 ,  F16C33/498 ,  Y02T10/865

摘要： A relatively low cost, low friction plastic needle bearing assembly uses a unitary plastic circular member with multiple frangibly attached substantially cylindrical needles (4) axially inserted into a cover (9). A plastic needle separator housing element provides a race (6) and is in axial registration with the frangibly attached needles (4). A shaft (on which a sprocket of a web feed device or tractor is mounted), upon axial insertion through the member to which the needles (4) are attached, frees the multiple needles (4) from the frangible attachment to the member and ejects the member from the cover (9) leaving the needle bearings captured by the race in the cover (9).

摘要翻译： 相对低成本的低摩擦塑料滚针轴承组件使用具有轴向插入盖（9）中的多个易碎的大致圆柱形的针（4）的整体塑料圆形构件。 塑料针分离器壳体元件提供一个座圈（6）并与易碎连接的针头（4）轴向对准。 轴（在其上安装有卷筒纸送料装置或拖拉机的链轮），当轴向插入通过所述针（4）所附接的构件时，将多根针（4）从易碎附件释放到构件上 来自所述盖（9）的所述构件将由所述座圈捕获的所述滚针轴承留在所述盖（9）中。

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：EP0751084A2

公开(公告)日：1997-01-02

申请号：EP95119382.0

申请日：1995-12-08

申请人： PRECISION HANDLING DEVICES, INC.

发明人： Ferguson, Gregory A.

IPC分类号： B65G21/06

CPC分类号： B65G21/06 ,  B65G15/00 ,  B65G15/28 ,  B65G15/60 ,  B65G2201/06

摘要： A low cost, self contained endless conveyor belt assembly (10) includes a flat conveyor bed (14), an endless conveyor belt (12) and a plurality of frame members (16-19) mounted thereto. The bed mounted frame members (16-19) support and house a drive shaft (24) which includes sprockets (26) for engaging the front inside radius of the endless conveyor belt (12) and a remote mounted drive motor (28). The self contained conveyor belt assembly (10) is adjustably mounted to complemental frame rails (34), one of which includes the drive motor (36) to which can be coupled the drive pulley (39) of the endless conveyor belt (12).

摘要翻译： 低成本，自包含的环形输送带组件（10）包括平坦输送床（14），环形输送带（12）和安装在其上的多个框架构件（16-19）。 床安装的框架构件（16-19）支撑并容纳驱动轴（24），其包括用于接合环形输送带（12）的前内半径的链轮（26）和远程安装的驱动马达（28）。 自包含的输送带组件（10）可调节地安装到互补框架轨道（34）上，其中一个包括可与环形输送带（12）的驱动滑轮（39）联接的驱动马达（36）。

公开(公告)号：EP0388514B1

公开(公告)日：1993-09-01

申请号：EP89118394.9

申请日：1989-10-04

申请人： PRECISION HANDLING DEVICES, INC.

发明人： Ferguson, Gregory A.

IPC分类号： B41J11/30

CPC分类号： B41J11/30

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：EP0192985A2

公开(公告)日：1986-09-03

申请号：EP86101196.3

申请日：1986-01-30

申请人： Precision Handling Devices, Inc.

发明人： Kerivan, Leo

IPC分类号： B41J11/30

CPC分类号： B41J11/30

摘要： A drive mechanism having a sprocket and a belt with inter-engaging lugs and receptacles on the belt and sprocket, respectively, wherein orthographic motion is obtained of the lugs into and out of the receptacles so as to provide for smooth, high efficiency transmission of drive forces by providing a fulcrum at inter-pitch spacing positions about which the belt bends along a radius centered at the fulcrum to bring the lugs directly into registry with the receptacles in the sprocket. The system provides virtual sprocket teeth, thereby effectively doubling or multiplying the number of teeth on the sprocket, compared to lugs on the belt so that a small, low-inertia, sprocket-belt drive system effectively provides the smoothness of transmission of a system with twice or greater the number of sprocket teeth than lugs, but without the cost of such additional teeth and lugs and without sacrificing belt life due to additional flexures of the belt. The drive system is embodied in a web feed tractor wherein the belt has pins which enter into and engage perforations in a web for feeding the web. Thefulcrums also locate the belt so as to accommodate the difference between the pitch of the belt lugs and the pitch of the sprocket teeth. The fulcrums also accommodate the arch in the belt when located on the sprocket due to the flexure of the belt about the edges of the lugs thereby providing for uniform registration of the drive system and spacing of lines printed on the web (paper) of a printer equipped with a tractor drive using the system.

摘要翻译： 一种驱动机构，其分别具有链轮和皮带，所述皮带和皮带在皮带和链轮上分别具有相互接合的凸耳和容器，其中凸耳进入和离开容器获得正交运动，从而提供驱动器的平滑，高效率的传动 通过在间距间距位置处设置支点，所述支撑带围绕所述支点沿着以支点为中心的半径弯曲，以使凸耳直接与链轮中的容器对准。 该系统提供虚拟链轮齿，从而与带上的凸耳相比，有效地使链轮上的齿数加倍或乘以使得小的，低惯量的链轮传动系统有效地提供系统的传动平滑度 两个或更多个链轮齿数超过凸耳，但是不需要额外的齿和凸耳的成本，并且由于带的额外弯曲而不牺牲皮带寿命。 驱动系统体现在卷筒纸进料拖拉机中，其中带具有进入和接合用于进料幅材的幅材中的穿孔的销。 支点还定位皮带以适应皮带凸耳的间距和链轮齿的间距之间的差异。 当位于链轮上时，由于皮带围绕凸缘的边缘的弯曲，支点也容纳在皮带中的拱形，从而提供驱动系统的均匀配准和打印在打印机的卷筒纸（纸）上的线的间距 配备了使用该系统的拖拉机驱动器。

公开(公告)号：EP0083401A3

公开(公告)日：1984-06-20

申请号：EP82109983

申请日：1982-10-28

申请人： Precision Handling Devices, Inc.

发明人： Kobryn, Ronald J.

IPC分类号： B41J03/12

CPC分类号： B41J2/275

摘要： An impact dot matrix print head has a body with a coil frame assembly and a nose piece on the rear of which the coil frame assembly is mounted. The nose piece has guides for print wires, the ends of which at the rear of the nose piece are in a circular array and are in a linear array and are maintained in sliding relationship by a linear slot guide at the front end of the nose piece so as to facilitate high quality high impact printing. An array of solenoidal coils and armatures complementary to the array of print wires at the rear end of the nose piece are located in the frame assembly. The armatures are freely disposed at one end on the frame and at the other end on the rear ends of the print wires. An end cap which bears on the frame assembly has a plurality of posts which extend through holes in each of the armatures and holes in spider springs which bear against the end caps and against the armatures where they bear against and pivot on the frame whereby to provide for ease of assembly and low friction guidance of the armatures and the spider springs which retain them. The springs may also be located with respect to the pivot so that they oppose the force of return springs on the print wires and partially balance such force to improve magnetic actuation of the armatures to help increase the printing speed of the head. Another end cap at the front of the frame assembly and the rear end cap are joined together by press fitting into posts to clamp the frame assembly into assembled relationship. A printed circuit board may be attached to the outside of the front end cap facing the front end of the nose piece. The coils are connected to energizing circuits for the print head by leads therefrom which extend through holes in the front end cap and are connected to the printed circuit board.

公开(公告)号：EP0083401A2

公开(公告)日：1983-07-13

申请号：EP82109983.5

申请日：1982-10-28

申请人： Precision Handling Devices, Inc.

发明人： Kobryn, Ronald J.

IPC分类号： B41J3/12

CPC分类号： B41J2/275

摘要： An impact dot matrix print head has a body with a coil frame assembly and a nose piece on the rear of which the coil frame assembly is mounted. The nose piece has guides for print wires, the ends of which at the rear of the nose piece are in a circular array and are in a linear array and are maintained in sliding relationship by a linear slot guide at the front end of the nose piece so as to facilitate high quality high impact printing. An array of solenoidal coils and armatures complementary to the array of print wires at the rear end of the nose piece are located in the frame assembly. The armatures are freely disposed at one end on the frame and at the other end on the rear ends of the print wires. An end cap which bears on the frame assembly has a plurality of posts which extend through holes in each of the armatures and holes in spider springs which bear against the end caps and against the armatures where they bear against and pivot on the frame whereby to provide for ease of assembly and low friction guidance of the armatures and the spider springs which retain them. The springs may also be located with respect to the pivot so that they oppose the force of return springs on the print wires and partially balance such force to improve magnetic actuation of the armatures to help increase the printing speed of the head. Another end cap at the front of the frame assembly and the rear end cap are joined together by press fitting into posts to clamp the frame assembly into assembled relationship. A printed circuit board may be attached to the outside of the front end cap facing the front end of the nose piece. The coils are connected to energizing circuits for the print head by leads therefrom which extend through holes in the front end cap and are connected to the printed circuit board.

公开(公告)号：EP0751084B1

公开(公告)日：2002-07-03

申请号：EP95119382.0

申请日：1995-12-08

申请人： PRECISION HANDLING DEVICES, INC.

发明人： Ferguson, Gregory A.

IPC分类号： B65G21/06

CPC分类号： B65G21/06 ,  B65G15/00 ,  B65G15/28 ,  B65G15/60 ,  B65G2201/06

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.