公开(公告)号：US06811391B1

公开(公告)日：2004-11-02

申请号：US09980508

申请日：2001-11-02

申请人： M. Barr Klaus ,  David S. Bernardi ,  Todd W. Brown

发明人： M. Barr Klaus ,  David S. Bernardi ,  Todd W. Brown

IPC分类号： B29C4540

CPC分类号： B29C45/4005

摘要： A molded part ejection tystem (103) includes a drive mechanism having a reversible servomotor (240). The drive mechanism for the ejection system includes a cam-and-follower arrangement whereby a circular cam member (252) is driven by the servomotor (240) through a drive shaft (250) that is connected with the cam member (252) and is offset from the center of the circular cam track (254). A cam follower (260) connected with an ejector drive rod (238), and the cam follower (260) rides in the cam track (254) to cause linear movement of the ejector drive rod (238) as the cam follower (260) follows the circular cam through its non-circular path of motion. Rotation of the servomotor (240) in one direction of rotation operates the part ejection system, while rotation of the servomotor in the opposite direction of rotation provides power to another portion of the machine during another portion of a molding machine operating cycle, such as a core-pull system. The servomotor drive shaft (241) includes a pair of one-way clutches that are each operable in a different direction of rotation of the motor drive shaft (241). In one direction of rotation, the motor (240) actuates a part ejection mechanism and in the other direction of rotation, the motor (240) can provide power to operate a different system of the molding machine. The present invention thus permits a single motor to perform two functions at different times during the operating cycle of an injection molding machine.

摘要翻译： 模制零件排出系统（103）包括具有可逆伺服电动机（240）的驱动机构。 用于喷射系统的驱动机构包括凸轮和从动装置，由此圆形凸轮构件（252）由伺服电动机（240）通过与凸轮构件（252）连接的驱动轴（250）驱动，并且是 偏离圆形凸轮轨道（254）的中心。 与顶出器驱动杆（238）连接的凸轮从动件（260），并且凸轮从动件（260）骑在凸轮轨道（254）中，以引起作为凸轮从动件（260）的顶出器驱动杆（238）的线性运动， 遵循圆形凸轮通过其非圆形运动路径。 伺服电动机（240）在一个旋转方向上的旋转操作部件弹出系统，同时伺服电动机沿相反的旋转方向的旋转在成型机操作循环的另一部分期间向机器的另一部分提供动力，例如 核心牵引系统。 伺服马达驱动轴241包括一对单向离合器，每个单向离合器可在马达驱动轴241的不同旋转方向上操作。 在一个旋转方向上，马达（240）致动部件弹出机构，并且在另一个旋转方向上，马达（240）可以提供动力以操作成型机的不同系统。 因此，本发明允许单个电动机在注塑机的操作循环期间的不同时间执行两个功能。

公开(公告)号：US06471904B2

公开(公告)日：2002-10-29

申请号：US09770343

申请日：2001-01-26

申请人： M. Barr Klaus ,  Norman L. Steffens

发明人： M. Barr Klaus ,  Norman L. Steffens

IPC分类号： B29C4570

CPC分类号： B29C45/53 ,  B29C45/531 ,  B29C45/54 ,  B29C45/542 ,  B29C2045/1792 ,  B29C2045/536

摘要： A two-stage, electrically-powered injection unit for an injection molding machine includes an extruder for plasticating material, and a separate melt accumulator to receive the plasticated material. The accumulator includes an injection plunger that is slidably positioned to inject the plasticated material from the accumulator into a mold. The plunger is rotated and translated by an electrically-driven linear actuator, such as a roller screw mechanism. The plunger extends outwardly of the accumulator barrel at the commencement of an injection stroke and is peripherally supported by a bushing at the outer end of the accumulator barrel. The outwardly-extending portion of the plunger can also be supported by a movable intermediate support member to minimize lateral deflection of the plunger and enable a longer injection stroke to be employed. The injection pressure imposed upon the plasticated material can be varied from a relatively low initial injection pressure, to minimize lateral deflection of the plunger, to a relatively higher injection pressure as the length of the portion of the plunger that extends outwardly of the accumulator barrel decreases.

摘要翻译： 用于注射成型机的两级电动注射单元包括用于塑化材料的挤出机和用于接收塑化材料的单独的熔融蓄积器。 蓄能器包括可滑动地定位以将来自蓄能器的塑化材料注入模具的注射柱塞。 柱塞通过诸如滚柱螺杆机构的电动线性致动器旋转和平移。 在注射行程开始时，柱塞从蓄压器筒的外部延伸，并且在储液器筒的外端处由衬套周向支撑。 柱塞的向外延伸的部分也可以由可移动的中间支撑构件支撑，以最小化柱塞的横向偏转并且能够采用更长的注射冲程。 施加在塑化材料上的注射压力可以从相对低的初始注射压力变化，以使柱塞的横向偏转最小化到相对较高的注射压力，因为延伸到蓄压器筒体外部的柱塞部分的长度减小 。

公开(公告)号：US06200127B1

公开(公告)日：2001-03-13

申请号：US09258729

申请日：1999-02-26

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C4554

CPC分类号： B29C45/52 ,  B29C45/54

摘要： The invention is directed to a bi-directional check ring for a two-stage injection unit. More specifically, a close fitting ring is inserted behind the plunger head of the melt accumulator so that normal running clearances between the plunger and barrel bore can be used. The outer diameter of this check ring has a very close fit with the inner diameter the injection barrel, but is not rigidly connected to the plunger. Accordingly, the plunger is free to “floats” while injection and plastication/filling take place. The open volume between the ring and plunger is small, but sufficient to permit the ring to “float” very close to the barrel inner diameter, without being influenced by the alignment of the plunger and injection drive motor.

摘要翻译： 本发明涉及一种用于两级注射单元的双向止回环。 更具体地说，在熔融蓄压器的柱塞头之后插入紧密的环，从而可以使用柱塞和筒孔之间的正常运行间隙。 该止回环的外径与注射筒的内径非常紧密配合，但并不与柱塞刚性连接。 因此，当注射和塑化/填充发生时，柱塞自由地“漂浮”。 环和柱塞之间的开放体积小，但足以允许环“非常接近柱体内径”浮动，而不受柱塞和注射驱动电机的对准的影响。

公开(公告)号：US07347965B2

公开(公告)日：2008-03-25

申请号：US11239192

申请日：2005-09-29

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C45/54 ,  B29C45/76

CPC分类号： B29C45/54 ,  B29C45/5008 ,  B29C45/531 ,  B29C2045/1792 ,  B29C2045/5036 ,  B29C2045/5068

摘要： An apparatus for injection molding comprises an injection unit comprising a plunger, the plunger being translated with accumulation of plasticized material in preparation for injection and being advanced to inject the accumulated plasticized material into mold cavities. At least one electric motor is engaged with the plunger to resist translation as melt is accumulated and to inject plasticized material into the mold cavities. At least one hydraulic actuator selectably operates the plunger during a pack and hold interval to supply supplemental force when force supplied by the electric motors is limited to maintain the operation of the motors within the applicable continuous duty rating thereof. The electric motors are advantageously selectably operatively engaged with the plunger to inject plasticized material into the mold cavities and the hydraulic actuators are operated to inject plasticized material into the mold cavities when the motors are not engaged therefore.

摘要翻译： 一种用于注射成型的装置包括一个注射单元，该注射单元包括一个柱塞，该柱塞在塑化材料的堆积中被平移以准备注射并被推进以将累积的增塑材料注入到模腔中。 至少一个电动机与柱塞接合以抵抗熔融物堆积时的平移并且将增塑材料注入到模腔中。 至少一个液压致动器在包装和保持间隔期间可选择地操作柱塞以在由电动机提供的力被限制的情况下提供补充力，以将电动机的操作保持在其适用的连续工作额定值内。 电动机有利地可选地与柱塞可操作地接合以将增塑材料注入到模腔中，并且当电动机不接合时，液压致动器被操作以将增塑材料注入到模腔中。

公开(公告)号：US06193499B1

公开(公告)日：2001-02-27

申请号：US09248935

申请日：1999-02-12

申请人： M. Barr Klaus ,  Norman L. Steffens

发明人： M. Barr Klaus ,  Norman L. Steffens

IPC分类号： B29C4570

CPC分类号： B29C45/53 ,  B29C45/531 ,  B29C45/54 ,  B29C45/542 ,  B29C2045/1792 ,  B29C2045/536

摘要： A two-stage, electrically-powered injection unit for an injection molding machine is disclosed. The injection unit includes an extruder for plasticating material, and a separate melt accumulator to receive the plasticated material. The accumulator includes an injection plunger that is slidably positioned to inject the plasticated material from the accumulator into a mold. The plunger is rotated and translated by an electrically-driven linear actuator, such as a roller screw mechanism. The plunger extends outwardly of the accumulator barrel at the commencement of an injection stroke and is peripherally supported by a bushing at the outer end of the accumulator barrel. The outwardly-extending portion of the plunger can also be supported by a movable intermediate support member to minimize lateral deflection of the plunger and enable a longer injection stroke to be employed. The injection pressure imposed upon the plasticated material can be varied from a relatively low initial injection pressure, to minimize plunger lateral deflection, to a relatively higher injection pressure as the length of the portion of the plunger that extends outwardly of the accumulator barrel decreases.

摘要翻译： 公开了一种用于注射成型机的两级电动注射单元。 注射单元包括用于塑化材料的挤出机和用于接收塑化材料的单独的熔融蓄热器。 蓄能器包括可滑动地定位以将来自蓄能器的塑化材料注入模具的注射柱塞。 柱塞通过诸如滚柱螺杆机构的电动线性致动器旋转和平移。 在注射行程开始时，柱塞从蓄压器筒的外部延伸，并且在储液器筒的外端处由衬套周向支撑。 柱塞的向外延伸的部分也可以由可移动的中间支撑构件支撑，以最小化柱塞的横向偏转并且能够采用更长的注射冲程。 施加在塑化材料上的注射压力可以从相对低的初始注射压力变化，从而将柱塞横向偏转最小化到相对更高的注射压力，因为延伸到储液器筒外侧的柱塞部分的长度减小。

公开(公告)号：US6120277A

公开(公告)日：2000-09-19

申请号：US306330

申请日：1999-05-06

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C45/50 ,  B29C45/82 ,  B29C45/80

CPC分类号： B29C45/5008 ,  B29C45/82 ,  B29C2045/1792 ,  B29C2045/7673 ,  B29C2045/824 ,  B29C2945/76602 ,  B29C2945/76665 ,  Y02P70/261

摘要： An electro-mechanical drive apparatus uses a single variable speed motor, two one-way clutches, a hydraulic pump stack and a hydraulic accumulator to provide both hydraulic power for linear motion axes and rotation of a driven element of an electromechanical drive system in an injection molding machine. When engaged, the first one-way clutch couples the drive motor to the pump stack, while the second one-way clutch couples the motor to the driven element. During rotation of the drive motor in a forward direction, (a) the first one-way clutch engages, rotating the shaft of the hydraulic pump stack to power the machine's hydraulic systems and charge an accumulator; and (b) the second one-way clutch slips. When the drive motor is rotated in a reverse direction, (a) the second one-way clutch engages, rotating the driven element, and (b) the first one-way clutch slips.

摘要翻译： 机电驱动装置使用单个可变速电动机，两个单向离合器，液压泵组和液压蓄能器，以提供用于直线运动轴的液压动力和机电驱动系统的从动元件在喷射中的旋转 成型机。 当接合时，第一单向离合器将驱动马达耦合到泵组，而第二单向离合器将马达耦合到从动元件。 在驱动马达向前转动的过程中，（a）第一单向离合器接合，使液压泵组的轴旋转，为机器的液压系统供电并对蓄能器充电; 和（b）第二单向离合器滑动。 当驱动马达沿相反方向转动时，（a）第二单向离合器接合，使从动元件旋转，并且（b）第一单向离合器滑动。

公开(公告)号：US6086353A

公开(公告)日：2000-07-11

申请号：US24731

申请日：1998-02-17

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C45/53 ,  B29C45/54 ,  B29C45/70

CPC分类号： B29C45/53 ,  B29C45/531 ,  B29C45/54 ,  B29C45/542 ,  B29C2045/1792 ,  B29C2045/536

摘要： The invention is directed to a two-stage, all-electric injection unit. More specifically, an injection unit in which the feed screw is preferably used only for plastication and the injection of the plasticized material is accomplished by a separate accumulator having an electrically driven linear actuator, such as a ball screw mechanism. The plunger of the accumulator is configured with a helical flight and is rotatable by way of a one-way clutch interposed between the plunger and the ball screw.

摘要翻译： 本发明涉及一种两级全电喷射装置。 更具体地，其中进料螺杆优选仅用于增塑和注塑塑化材料的注射单元通过具有诸如滚珠丝杠机构的电驱动线性致动器的单独的蓄能器来实现。 蓄能器的柱塞构造成具有螺旋形飞行，并且可通过插入柱塞和滚珠丝杠之间的单向离合器旋转。

公开(公告)号：US5916602A

公开(公告)日：1999-06-29

申请号：US901752

申请日：1997-07-28

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C45/50 ,  B29C45/82 ,  B29C45/80

CPC分类号： B29C45/5008 ,  B29C45/82 ,  B29C2045/1792 ,  B29C2045/7673 ,  B29C2045/824 ,  B29C2945/76498 ,  B29C2945/76602 ,  B29C2945/76665 ,  B29C2945/76765 ,  Y02P70/261

摘要： An electro-mechanical drive apparatus uses a single variable speed motor, two one-way clutches, and a hydraulic accumulator to provide both hydraulic power for the linear motion axes and rotation of the plasticizing screw in an injection molding machine. When engaged, the first one-way clutch couples the drive motor to the pump stack, while the second one-way clutch couples the motor to the feed screw. During rotation of the drive motor in a forward direction; (a) the first one-way clutch engages, rotating the shaft of the hydraulic pump stack to power the machines hydraulic systems and charge the accumulator; and (b) the second one-way clutch slips. When the drive motor is rotated in a reverse direction, (a) the second one-way clutch engages, rotating the feed screw, and (b) the first one-way clutch slips. Preferably, the drive apparatus is associated with a double shaft motor mounted adjacent separate drive couplings for the feed screw and hydraulic pump stack.

摘要翻译： 电动机械驱动装置使用单个变速电动机，两个单向离合器和液压蓄能器，以在注射成型机中为直线运动轴线提供液压动力和增塑螺杆的旋转。 当接合时，第一单向离合器将驱动马达耦合到泵组，而第二单向离合器将马达耦合到进给螺杆。 在驱动马达沿向前方向的旋转期间; （a）第一单向离合器接合，旋转液压泵组的轴以为机器液压系统供电并对蓄能器充电; 和（b）第二单向离合器滑动。 当驱动马达沿相反方向旋转时，（a）第二单向离合器接合，旋转进给螺杆，和（b）第一单向离合器滑动。 优选地，驱动装置与安装在用于进给螺杆和液压泵组的分开的驱动联接件相邻的双轴马达相关联。

公开(公告)号：US5863567A

公开(公告)日：1999-01-26

申请号：US901744

申请日：1997-07-28

申请人： M. Barr Klaus

发明人： M. Barr Klaus

IPC分类号： B29C45/53 ,  B29C45/54 ,  B29C45/70

CPC分类号： B29C45/531 ,  B29C45/54

摘要： The invention is directed to a two-stage, all-electric injection unit. More specifically, an injection unit in which the feed screw is preferably used only for plastication and the injection of the plasticized material is accomplished by a separate accumulator having an electrically driven linear actuator, such as a ball screw mechanism. The accumulator is configured so that the ratio of the piston stroke to the piston diameter is preferably in the range of ten to fifteen. In the preferred embodiment there are separate motors for rotation of the screw and operation of the accumulator. An alternate embodiment is disclosed wherein the system is driven with a single motor and one-way clutches.

摘要翻译： 本发明涉及一种两级全电喷射装置。 更具体地，其中进料螺杆优选仅用于增塑和注塑塑化材料的注射单元通过具有诸如滚珠丝杠机构的电驱动线性致动器的单独的蓄能器来实现。 蓄能器构造成使得活塞行程与活塞直径的比率优选地在十到十五的范围内。 在优选实施例中，存在用于旋转螺杆和蓄能器的操作的单独的马达。 公开了一种替代实施例，其中系统由单个电动机和单向离合器驱动。