Conveying device for conveying workpieces along a direction of conveyance, comprising: - a workpiece holding device on which one or more workpieces are arrangeable; - an accelerating device by means of which the workpiece holding device together with the one or more workpieces arranged thereon is adapted to be accelerated from a given start position of the workpiece holding device along the direction of conveyance, wherein, after the acceleration of the workpiece holding device together with the one or more workpieces arranged thereon, an accelerating element of the accelerating device is movable from an ending position into a starting position, wherein the accelerating device comprises a drive device by means of which the accelerating element is movable alternately forwards and backwards along a path of movement of the accelerating element; - a braking device by means of which the workpiece holding device together with the one or more workpieces arranged thereon is brakable at a given end position; - a guidance device by means of which the workpiece holding device is guidable along the direction of conveyance and by means of which the weight force of the workpiece holding device can be accommodated, wherein the accelerating device and/or the braking device is a device differing from the guidance device, wherein the conveying device comprises a positioning device for positioning the workpiece holding device together with the one or more workpieces arranged thereon, wherein the positioning device comprises a sliding device and a blocking device, wherein the blocking device is formed such as to block unidirectionally so that the workpiece holding device together with the one or more workpieces arranged thereon is movable past the blocking device in the direction of conveyance but a movement of the workpiece holding device together with the one or more workpieces arranged thereon is blockable in a direction opposed to the direction of conveyance and wherein the workpiece holding device together with the one or more workpieces arranged thereon is movable in a direction opposed to the direction of conveyance by means of the sliding device and is clampable between the blocking device and the sliding device, characterized in that a blocking element of the blocking device is pivotal about a rotational axis when the workpiece holding device is moving past the blocking device and is thereby moved out of the path of conveyance and in that the blocking element is pivotal back into the path of conveyance due to the effect of a spring in the blocking device as soon as the workpiece holding device has moved past the blocking device. - a workpiece holding device on which one or more workpieces are arrangeable; - an accelerating device by means of which the workpiece holding device together with the one or more workpieces arranged thereon is adapted to be accelerated from a given start position of the workpiece holding device along the direction of conveyance, wherein, after the acceleration of the workpiece holding device together with the one or more workpieces arranged thereon, an accelerating element of the accelerating device is movable from an ending position into a starting position, wherein the accelerating device comprises a drive device by means of which the accelerating element is movable alternately forwards and backwards along a path of movement of the accelerating element; - a braking device by means of which the workpiece holding device together with the one or more workpieces arranged thereon is brakable at a given end position; - a guidance device by means of which the workpiece holding device is guidable along the direction of conveyance and by means of which the weight force of the workpiece holding device can be accommodated, wherein the accelerating device and/or the braking device is a device differing from the guidance device, wherein the conveying device comprises a positioning device for positioning the workpiece holding device together with the one or more workpieces arranged thereon, wherein the positioning device comprises a sliding device and a blocking device, wherein the blocking device is formed such as to block unidirectionally so that the workpiece holding device together with the one or more workpieces arranged thereon is movable past the blocking device in the direction of conveyance but a movement of the workpiece holding device together with the one or more workpieces arranged thereon is blockable in a direction opposed to the direction of conveyance and wherein the workpiece holding device together with the one or more workpieces arranged thereon is movable in a direction opposed to the direction of conveyance by means of the sliding device and is clampable between the blocking device and the sliding device, characterized in that a blocking element of the blocking device is pivotal about a rotational axis when the workpiece holding device is moving past the blocking device and is thereby moved out of the path of conveyance and in that the blocking element is pivotal back into the path of conveyance due to the effect of a spring in the blocking device as soon as the workpiece holding device has moved past the blocking device.