Transfer device and multistation presses

Transfer device for workpieces to be transported on a given path, particularly for the transport of workpieces along several successive work stations, comprising

• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing connected with one end of the cross traverse and a second control arm gearing connected with the other end of the cross traverse
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings, and each control arm gearing contains at least two control arms which are stressed essentially with respect to push and pull and together enclose an angle other than zero, and the control arm gearings are configured to have the same effect.

Transfer device for workpieces to be transported on a given path for the transport of workpieces between work stations, comprising

• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing having a first end hingedly connected with one end of the cross traverse and a second end hingedly connected at one of the driving units, and a second control arm gearing having a first end hingedly connected with another end of the cross traverse and a second end hingedly connected at another of the driving units, and
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings,
• wherein the drive units are respective linear units whose output ends carry out a defined linear movement as a function of an input signal, and the linear units are spaced from one another and have working directions which are substantially parallel to one another.

Transfer device for workpieces to be transported on a given path for the transport of workpieces between work stations, comprising

• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing having a first end hingedly connected with one end of the cross traverse and a second end hingedly connected at one of the driving units, and a second control arm gearing having a first end hingedly connected with another end of the cross traverse and a second end hingedly connected at another of the driving units, and
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings,
• wherein at least a third control arm is part of the control arm gearing, which third control arm is connected by one end with a third driving unit and is connected by another end with the cross traverse at a hinge spaced from the hinges of the first and of the second control arm gearing which define a common swivel axis.

Transfer device for workpieces to be transported on a given path for the transport of workpieces between work stations, comprising

• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing having a first end hingedly connected with one end of the cross traverse and a second end hingedly connected at one of the driving units, and a second control arm gearing having a first end hingedly connected with another end of the cross traverse and a second end hingedly connected at another of the driving units, and
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings,
• wherein at least one of the control arms is part of a parallelogram guide.

Transfer device for workpieces to be transported on a given path for the transport of workpieces between work stations, comprising

• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing having a first end hingedly connected with one end of the cross traverse and a second end hingedly connected at one of the driving units, and a second control arm gearing having a first end hingedly connected with another end of the cross traverse and a second end hingedly connected at another of the driving units, and
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings,
• wherein at least one control arm for guiding the cross traverse is provided with a tension device gearing for connecting the cross traverse with an element 104, thereby indicating a rotating position thereof.

Multistation press for the successive machining of workpieces in several steps, comprising

• several press stations arranged behind one another and through which the workpieces are to travel in a successive manner, and
• at least one transfer device for workpieces to be transported on a given path, comprising
• a cross traverse provided with at least one holding device for controllably receiving and releasing workpieces,
• a carrier device on which the cross traverse is held at ends for guiding the holding device on a predetermined closed-loop transfer curve, and
• a driving device which acts upon the carrier device for driving the cross traverse in two mutually independent directions and having at least one first and one second driving unit controllable in a mutually independent manner,
• wherein the carrier device includes a first control arm gearing including at least two control arms having first ends commonly hingedly connected with one end of the cross traverse and second ends separately hingedly connected at one of the driving units, and second control arm gearing including at least two control arms having first ends commonly hingedly connected with another end of the cross traverse and second ends separately hingedly connected at another of the driving units, and
• the cross traverse is carried by the control arm gearings and is synchronously driven on ends thereof by the driving units by way of the control arm gearings.