摘要:
In a method for the manufacture of armatures from sheet-metal parts stacked in the manner of laminated inductors, predeterminately shaped openings or indentations (6) and corresponding coaxially opposite projections (8) are defined in and during the formation of the sheet-metal parts (1, 2, 3), the sheet-metal parts are stacked so that the projections (8) nestedly engage the shaped openings or indentations (6) of the adjacent sheet-metal part (1, 2, 3) and thereby provide form-locked mechanical connections between the parts, and the stack (11) of sheet-metal shapes is secured against loosening and disengagement of the form-locked mechanical connections (10) by cementing or thermal bonding or the like of the sheet-metal parts one to another.
摘要:
A matrix print head comprises several armature device groups which, in each case, comprise a magnet yoke (9) with an electromagnetic coil (10), disposed on one of the magnet yoke arms (9a), and an armature (8), which armature serves as a drive for a print element (2). The armature (8) can be moved in a rapid sequence against the pole faces (20b) of the magnet yokes (9) and back into a rest position. In order to reduce the wear at the pole faces (20a and 20b) or, respectively, at the wear faces (18), high temperature-stable lubricants can be disposed and intercalated in capillary hollow spaces (17) of armatures (8) and/or magnet yokes (9). These capillary hollow spaces (17) are adjoining and running to the wear faces (18).
摘要:
An electromagnetic coil support (7) forms a magnet yoke ring for, for example, 18 or 24 print element systems of a matrix print head. In each case the magnet yoke body (9) with yoke feet (16) is attached in polygonal openings (19) of the annular electromagnetic coil support (7) and is directed radially toward the center of the electromagnetic coil support (7). In order to achieve a smallest possible diameter for the matrix print head in cases where the number of print element systems amounts to over 14, for example, 18 or 24, and a simultaneously safe attachment of the magnet yoke bodies (9) to the base plate, a larger rest face (18a) of the magnet yoke body (9) follows to the smaller yoke foot (16) in cross-section (16a) as compared to the cross-section (17) of the magnet yoke body (9). The yoke foot (16) is glued into the polygonal openings (19) of the electromagnetic coil support (7).
摘要:
A light source for use in a device, for example in a dental device, comprising a semiconductor element disposed in a housing wherein the semiconductor element comprises a light-emitting surface. The light source further comprises a socket that extends from a side of the semiconductor element opposite the light-emitting surface, the socket being provided for being placed in a frame located in the device, wherein the socket comprises contact elements and lines for power supply to the semiconductor element. The light source is particularly robust and long-lasting.
摘要:
A method for production of an armature device group for matrix print heads of the clapper-armature construction is based on connecting and jointly processing prefabricated parts (1, 2) such that elongated armatures with wide armature arms (4) and narrower armature arms (5) are generated. For further decreasing the production costs and for increasing the precision of the armature coordination, for facilitating mounting and for saving assembly steps, an armature circle (1) is punched out with openings (6). An annular elastic shaped plate (2) of sheet metal is then attached covering the opening (6) and the radially outer and radially inner armature arms (4, 5) are then cut out employing a method such as thermal cutting or, respectively, water-torch cutting, without damaging of the shaped plate (2).
摘要:
An armature (4) is coordinated to each print pin (1) with a pin guide case (9) and in a coil support case (14) an electromagnetic coil (3) and magnet yokes (3a, 3b) in a matrix pin print head. In order to improve the system of the individual armatures (4) and their support, all armatures (4) are maintained in operations with a shaped sheet metal (19, 19a) and are connected thereby to each other and thereby form a unit (4, 19). Thus unit (4, 19) is centered via in the pin guide case (9) via several cogs (25), distributed over the circumference, and cogs are provided, which center this unit (4, 19) also in a coil support case (14).
摘要:
A device for disinfecting, sterilizing and/or maintaining medical, particularly dental, instruments comprises connecting units for connecting supply containers for media used by the device, in particular cleaning or care products, wherein the connecting units comprise control and/or identification means, which enable an identification of the supply container.
摘要:
In a vibration frame (1) for print elements (2) of a matrix line printer, the print elements (2) are furnished in the clapper armature construction. The print elements (2) form neighboring component units in line direction (3) in or, respectively, at a profile rod (7). Said component units include, in each case, a magnetic yoke (8), an electromagnetic coil (9), a clapper armature (10), a clapper armature pivoting hinge support (11), a restoring spring (12), and print elements (2) attached at the clapper armature (10). In order to create a space-saving lateral guiding for the clapper armature (10), the clapper armature (10) is, in each case, laterally guided and pivotably movable by at least one tongue (15), extending perpendicular to the longitudinal extension and engaging into a recess (16). The restoring spring (12) is formed as an arm spring (17). The arm spring (17) forms with a spring arm (18) a second lateral guide for the clapper armature (10).
摘要:
A drive system for printers, in particular for matrix printers of a needle-type construction or hammer-type construction, exhibits an electromagnetic coil (L) coordinated to each printing element (6), as well as a magnetizable armature disposed opposite to each electromagnetic core (2), where the print element (6) is attached to the magnetizable armature, where the armature, in case of switched-off electromagnetic coil (L), is maintained in a rearward launching position, and where during a current-passing electromagnetic coil (L) the armature is launched with the print element (6) into a forward-disposed print position. In order to further increase the driving frequency for such electromagnetic coils (L), it is disclosed that a discharge time (t3), for the feeding back of the discharge current from the capacitor (C) into the electromagnetic coil (L) and via a resistor (R3) and a transistor (V2) into the capacitor (C), is provided following to a charge time (t2) for the capacitor (C), which charge time (t2) follows to a first pulse time (t1). Such a drive system is suitable both for electromagnetic-coil permanent-magnet systems as well as electromagnetic-coil clapper-armature systems.
摘要:
A matrix pin print head is set to a fixed distance (17) relative to a print counter support (2), where a recording substrate (3) rests on the print counter support (2). An ink ribbon (4) is guided in front of the print pins (5) between the matrix pin print head (1) and the recording substrate (3). Electromagnetic-coil pin drives (8, 9, 10) are coordinated jointly to the print pins (5) or individually to each print pin (5). Each print pin (5) can be moved within a stroke path (16) from a rearward withdrawn position (18) into a forward extended position (19) and back. In order to adjust the operating air gap (25) between a magnet yoke (9) and a clapper armature (10) during its operation, it is provided that the drive energy, fed of equal size in each case to each print pin (5), is changeable in each case in uniform amounts, i.e. by equal amounts, to enlarge or to decrease the drive energy fed to the respective print pin (5).