A refilling device on a stacking magazine (2) comprises a refilling magazine (18) which is disposed above the stacking magazine and has a rotatably drivable shaft (10) on each of two sides of the refilling magazine, the shafts together forming a support for a stack (11), and at least one controllably activatable air nozzle, by way of which air can be blown into the refilling magazine in such a way that metal sheets on the bottom side of the stack (11) can be bent by the air supply in the direction of the stacking magazine.

A threading bolt (1) for stacking sheets provided with at least one threading hole (2), in particular core sheets (3) of transformer cores, on a core stacking table (4), on a building platform, on a stacking device or the like, at least one threading bolt (1) being positionable on the core stacking table (4), on the building platform, on the stacking device or the like, wherein the outer diameter (D.sub.a) of the threading bolt (1) is adaptable to different inner diameters (d.sub.i) of the threading holes (2).

There is provided a buildup device that builds up a plate-shaped core after rotating the core by a predetermined angle, and that includes a servomotor, a damping plate attached to the servomotor, at least one upper plate provided above the damping plate, at least one lower plate provided below the damping plate, and a plurality of vibration absorbing members attached to the damping plate. The upper plate and the lower plate restrict a degree of freedom of vibration to one direction, and the vibration absorbing members absorb vertical vibration.

A method for determining the thickness of a material strip (5) when feeding the material strip (5) to the processing zone of a machine tool (1). The material strip (5) is clamped between two rotatable rollers (3, 4), whose relative position to each other in the original state with clean rollers and zero roller spacing was detected (reference relative position) and whose relative position to each other in the intended feed operation is determined for each feed interval (current relative position). The difference between the current relative position and the reference relative position, which gives the thickness of the strip material (5) when the rollers are clean in their original state, is corrected according to the invention for any changes in diameter of the rollers (3, 4) that may have occurred, for example, due to contamination. For this purpose, in the original state with clean rollers (3, 4) in a reference feed operation, an assigned reference angle of rotation of the roller (3) is additionally detected for at least one of the rollers (3) at a detected reference feed length, so that the original ratio of feed length/angle of rotation for this roller (3) is known and thus its original diameter is also clearly defined. If there are deviations from these parameters during the intended feed operation, the deviations are converted into a diameter change of the at least one roller (3) and taken into account in the calculation of the thickness of the material strip (5). The invention makes it possible to solve today's problems in strip thickness measurements with rollers.

A method for determining the thickness of a material strip (5) when feeding the material strip (5) to the processing zone of a machine tool (1). The material strip (5) is clamped between two rotatable rollers (3, 4), whose relative position to each other in the original state with clean rollers and zero roller spacing was detected (reference relative position) and whose relative position to each other in the intended feed operation is determined for each feed interval (current relative position). The difference between the current relative position and the reference relative position, which gives the thickness of the strip material (5) when the rollers are clean in their original state, is corrected according to the invention for any changes in diameter of the rollers (3, 4) that may have occurred, for example, due to contamination. For this purpose, in the original state with clean rollers (3, 4) in a reference feed operation, an assigned reference angle of rotation of the roller (3) is additionally detected for at least one of the rollers (3) at a detected reference feed length, so that the original ratio of feed length/angle of rotation for this roller (3) is known and thus its original diameter is also clearly defined. If there are deviations from these parameters during the intended feed operation, the deviations are converted into a diameter change of the at least one roller (3) and taken into account in the calculation of the thickness of the material strip (5). The invention makes it possible to solve today's problems in strip thickness measurements with rollers.

The present invention relates to an integrated flattening, cutting and collecting assembly capable of integrity maintenance, which includes a frame, a conveyor seat and a processing rack. The processing rack is provided with a flattening cylinder and cutting cylinders in sequence, a flattening block cooperating with the steel sheet in the conveyor seat is connected below the flattening cylinder, a cutting lift seat is provided below the cutting cylinder, the cutting lift seat is provided with a cutter and cutting pressing blocks, the cutting pressing blocks are arranged symmetrically on the left and right sides of the cutter; and the distance between the two cutting pressing blocks is smaller than the distance of the flattening block, the lower end of the cutter exceeds the cutting pressing block, and the distance it exceeds is the same as the thickness of the steel sheet, the end of the conveyor seat is fitted with a collecting device; the cutting pressing block can press and hold the steel sheet during cutting, while not affect the cutting of the cutter, thereby the accuracy of the steel sheet cutting is greatly improved.

Provided is a fin stacking apparatus, which is configured to stack a fin having a flat-plate shape and a plurality of holes formed therein. The fin stacking apparatus includes: a plurality of stacking pins to be inserted into the plurality of holes of the fin; a suction plate which is arranged above the plurality of stacking pins and is configured to suck the fin through a plurality of holes formed in the suction plate; and a roller arranged in a slide region on the suction plate where a flat surface portion of the fin moves.

Provided is a fin stacking apparatus, which is configured to stack a fin having a flat-plate shape and a plurality of holes formed therein. The fin stacking apparatus includes: a plurality of stacking pins to be inserted into the plurality of holes of the fin; a suction plate which is arranged above the plurality of stacking pins and is configured to suck the fin through a plurality of holes formed in the suction plate; and a roller arranged in a slide region on the suction plate where a flat surface portion of the fin moves.

According to some embodiments a conveying device for conveying goods includes at least one conveyor belt with an outer contact face against which the goods to be conveyed are held during conveyance. A main negative pressure holding area is provided adjacent to the conveyor belt, the main negative pressure holding area being configured to hold or release the goods to or from the conveyor belt by negative pressure. The conveyor belt includes at least one suction chamber on the outer contact face forming an additional negative pressure holding area, the suction chamber being in fluid communication with negative pressure holding means through at least one opening transversely going through the conveyor belt.

In a destacking device comprising a stacking magazine (2), the respective lowest sheet of a stack (1) of metal sheets is destacked by way of a suction element (5, 15). This element can be moved upward and downward by way of a drive (6). At the end of the upward movement, the respective lowest metal sheet (4) of the stack (1) is gripped by suction power and pulled from the stack. A second suction element (5, 15) is provided, which can be moved upward and downward by way of a drive (6) and by way of which the lowest sheet (4) of the stack (1) can be gripped at the end of the upward movement. The second suction element is driven so as to be leading with respect to the first suction element, so that the respective lowest sheet (4) of the stack (1) can first be pulled from the stack by the second suction element (5), and subsequently by the first suction element (5). In this way, it becomes possible to destack thin sheets having a thickness of only 0.12 mm and a square shape without disruption. The stack is held magnetically in the stacking magazine, which facilitates destacking.