DE102018118138B4 - Insertion device and method with force or distance control for inserting a circular ring into an outer ring - Google Patents

Abstract

Insertion device (39) for inserting a circular blank ring (30) into an outer ring (29) of a multi-part circular blank, with a tappet (58) which is arranged coaxially to an axis (A) and has a tappet surface (62) which is used to act on the circular blank ring ( 30) is set up, with a plunger drive (57) which is set up to move the plunger (58) along the axis (A), with a centering body (48) which is arranged coaxially to the axis (A) and a free end ( 52), which is assigned to the ram surface (62), with a centering drive (47) for moving the centering body (48) along the axis (A), with a control unit (70) which is set up to control the centering drive (47) to be controlled in order to bring the centering body (48) into engagement with an outer ring (29) arranged at the insertion point (E) and thereby align it coaxially to the axis (A), the control unit (70) also being set up to control the ram drive ( 57) to control the circular ring (30) by Bea to move the impact with the plunger surface (62) to the insertion point (E) and to insert it into the outer ring (29) which is aligned coaxially to the axis (A) by the centering body (48), characterized in that the control unit (70) is also designed to to control the centering drive (47) and / or the plunger drive (57) in such a way, - the movements of the plunger (58) and the centering body (48) are coordinated so that when the circular ring (30) is inserted, a predetermined maximum pressure force between the Circular ring (30) and the centering body (48) are not exceeded or - that a predetermined minimum distance (d) between the circular ring (30) and the centering body (48) is not undershot.

Description

The invention relates to an insertion device and a method for inserting a circular blank ring into an outer ring of a circular blank.

Out DE 10 2010 013 148 A1 a round blank with several round parts is known. The circular blank consists of a circular blank core, an outer ring and a circular blank ring, which is arranged between the circular blank core and the outer ring. The circular core and the outer ring consist of a metallic material. The circular ring can essentially consist of plastic, for example a polymer.

A multi-part coin with a circular core, an outer ring and a circular ring is also in DE 10 2012 014 958 A1 described.

EP 0 320 731 A2 discloses an automatic coining machine for ring-core coins. The embossing machine has a revolving plate with receiving pockets, into which separated rings are inserted via a separating device. Another separating device feeds the cores that are to be inserted into a ring each. A spring-loaded lever is provided for this purpose, which presses the cores, which are pushed onto the rings, into the ring. When the core is pushed over the ring, the lever can move against the spring force.

DE 100 57 000 A1 describes an apparatus for making multi-part coins. Circular cores are inserted into a circular ring by means of an insertion device. The circular blank cores are pressed into the circular blank rings by means of a ram.

DE 10 2016 204 209 A1 discloses an insertion device and method for inserting a circular blank ring into an outer ring. The outer ring is first arranged at an insertion point and the circular ring is arranged in an initial position. The insertion point and the starting position are spaced along an axis A. arranged. The outer ring is first aligned coaxially to the axis via a centering body which is arranged coaxially to the axis. The circular ring is then moved in the direction of the insertion point by means of a plunger and inserted into the outer ring.

The device and the method DE 10 2016 204 209 A1 have the advantage that when they are inserted, there is no overlap between the outer ring and the circular blank ring radially to the axis, thereby avoiding damage to the circular blank ring, in particular in the case of circular blank rings made of plastic or a polymer material.

Based on this, it is an object of the present invention to further improve the known insertion device or the method for inserting a circular blank ring into an outer ring, in particular in order to reduce the load on the circular blank ring to be inserted and to increase the efficiency and production speed.

This object is achieved by an insertion device with the features of claim 1 and a method with the features of claim 13.

The circular blank ring and the outer ring are, for example, part of a multi-part circular blank, which can in particular consist of a circular blank core, the circular blank ring and the outer ring. The outer ring consists of a metal or a metallic alloy. The circular core can also consist of a metal or a metallic alloy and can be made of the same material as the outer ring or of a different material. The circular blank ring is made of a material that can be softer than the outer ring and / or the circular blank core and is preferably made of plastic or at least predominantly consists of plastic. In one example, the circular blank ring can be made from a polymer material. It can therefore also be referred to as a polymer ring. The circular ring can alternatively also consist of a metallic alloy.

The insertion device according to the invention has a tappet which is arranged coaxially to an axis and has a tappet surface for acting on the circular ring. A ram drive is provided which is set up to move the ram along the axis. In addition, the insertion device has a centering body and a centering drive designed to move the centering body along the axis. The centering body is arranged coaxially to the axis and has a free end which is assigned to or facing the tappet surface of the tappet. At the free end, the centering body can taper in the direction of the ram, preferably taper conically.

A control unit is available and set up to control the centering drive and the ram drive. As a result, the centering body can be brought into engagement with an outer ring arranged at the insertion point in order to align the outer ring coaxially with the axis. In addition, the plunger with the plunger surface can move the circular blank ring, which is arranged in an initial position, to the insertion point and insert it into the outer ring, which is aligned coaxially to the axis. When the circular ring is moved to the point of insertion, the plunger drive and / or the centering drive is activated in such a way that there is no maximum pressing force between the circular ring and the centering body is exceeded or that a predetermined minimum distance between the circular ring and the centering body is not undershot. The maximum pressing force can be a few Newtons up to and including zero Newtons. The minimum distance is greater than zero.

By this measure and the specification of a maximum pressing force or the specification of a minimum distance, the pressure load on the circular ring between the plunger and the centering body is minimized or eliminated. Often the circular blank rings, especially if they are made of plastic or polymer material, are very sensitive to pressure loads and can be plastically deformed when inserted between the centering body and the plunger. The coordinated control of the centering drive and plunger drive by means of a common control unit ensures that a pressing force between the circular ring and the centering body is limited or, in a preferred embodiment, a minimum distance greater than zero is maintained between the circular ring and the centering body. With this second alternative, contact between the circular ring and the centering body is avoided. The centering body is adapted to the movement of the plunger and moved away from the insertion point or the outer ring, so that the respectively specified condition - maximum pressing force or minimum distance - is always guaranteed when the circular ring is inserted.

The centering body preferably has a maximum outer diameter which at least corresponds to the inner diameter of the outer ring. The centering body can have a tapering section at its free end, since it has a minimum outer diameter which is smaller than the inner diameter of the outer ring. In the area of the tapering end section following the free end, the outer ring can be quickly and reliably aligned coaxially to the axis in order to be able to insert the circular ring into the outer ring without radial overlap relative to the axis.

It is advantageous if the control unit is set up to control the centering drive and the plunger drive in a coordinated manner in such a way that the position of the centering body is controlled or regulated as a function of the target position or the actual position of the plunger. In this embodiment, the plunger drive can be moved continuously in an oscillating manner. The position of the centering body is controlled or regulated depending on the specified target position or a determined actual position of the plunger in such a way that the specified condition is met: maintaining a maximum pressure force or maintaining a predetermined minimum distance between the circular ring and the centering body. Since the predetermined target position of the ram is known to the control unit, the centering drive can be controlled or regulated in a simple manner as a function thereof. It is also possible to provide one or more position sensors in order to detect the respective actual position of the plunger and / or the centering body, so that a closed control loop is possible for regulating the position of the plunger or the centering body.

The control unit can preferably also be set up to control the centering drive and the plunger drive in a time-coordinated manner in such a way that the centering body engages the outer ring before the plunger brings the circular ring into contact with the outer ring or before the circular ring has reached the insertion point in which the outer ring is located. This prevents the circular blank ring from colliding with the outer ring. The centering body aligns the outer ring coaxially to the axis beforehand.

It is also preferred if the control unit is set up to control the centering drive and the plunger drive in a coordinated manner in terms of time such that the centering body rests on the outer ring at least at the beginning of the insertion of the circular blank ring into the outer ring. The centering body rests on the outer ring during an insertion phase until the circular ring is inserted into the inner area of the outer ring. This ensures that the centering of the outer ring is maintained until the circular ring at least partially engages the inner region of the outer ring, so that the circular ring prevents radial displacement of the outer ring relative to the axis. During this phase of insertion, there is preferably no contact between the circular ring and the centering body, or it is ensured that the maximum pressing force is not exceeded.

In an advantageous embodiment, a reshaping station is present in which the outer ring of the round blank is reshaped, in particular radially reshaped.

It is advantageous if the centering body has a cylindrical centering section and, when centering the outer ring, engages with the cylindrical centering section in the outer ring or completely penetrates the outer ring. As a result, the inner diameter can be checked in addition to the centering of the outer ring. The outer diameter of the cylindrical centering section of the centering body corresponds to this - apart from the play that is technically necessary - the nominal inner diameter of the outer ring. Deviations in the inner diameter or shape of the outer ring can be recognized in this way. This measure is particularly advantageous when the outer ring is reshaped in an optionally available reshaping station immediately before being transported to the insertion point.

In the optionally available forming station, there may be diameter deviations due to tool wear and / or varying forming forces, which can then be detected at the insertion point or by the insertion device. For example, the force that is required to move the centering body into or through the outer ring and / or a variable describing this force, such as a motor current, can be determined. If this force and the variable describing the force exceeds a predetermined threshold value, it can be concluded from this that the inner diameter of the outer ring has reached a minimum inner diameter value. Measures can then be initiated at the forming station in order to change the forming of the outer rings in such a way that the inner diameter is again adapted to the nominal inner diameter. The reshaping station can be readjusted manually by an operator. Alternatively, it is also possible to provide an automatic adjustment by a control or regulation when it is recognized in the insertion device that the inner diameter of the outer rings leaves a tolerance range around the nominal inner diameter.

In a preferred embodiment, the centering drive and / or the plunger drive are gearless. The centering drive and / or the ram drive are preferably designed as an electric motor drive.

There are preferably no rotating abrasion parts on the centering drive and / or on the ram drive. For example, the ram drive and / or the centering drive can have a linear motor or be formed by a linear motor.

By designing the drives with one or more of the aforementioned features, a very rapid movement in the direction of the axis can take place in order to maintain the boundary condition of the maximum pressing force or the minimum distance even with high numbers of strokes of the insertion device.

It is also advantageous if a first transport unit is present in order to transport the circular blank rings into an initial position adjacent to the ram surface. Additionally or alternatively, a second transport unit can be present in order to transport the outer rings to the insertion point. The transport units can each be formed by a turret plate that has receiving pockets for the outer rings or circular rings. The outer ring can remain in the receiving pocket of the associated turret plate when the circular ring is inserted.

A centering channel can be present between the insertion point and a starting position for a circular blank ring to be inserted in order to align the circular blank ring coaxially to the axis when it moves to the insertion point.

A method according to the invention has the following steps:

First, an outer ring is transported to an insertion point. At the same time, before or afterwards, a circular ring is transported to an initial position, the insertion point and the initial position in the direction of the axis A. are arranged adjacent at a distance from one another. The outer ring is then aligned coaxially to the axis by means of a centering body which can be moved along the axis. The circular ring is moved in the axial direction to the insertion point and reaches the insertion point when the outer ring has been aligned coaxially to the axis by the centering body. During the insertion of the circular blank ring into the inner area of the outer ring, it is ensured that a maximum contact force is not exceeded between the circular blank ring and the centering body or that a predetermined minimum distance is not undershot between the circular blank ring and the centering body. In this way, loading or deformation of the circular ring can be avoided.

The circular ring can be aligned coaxially to the axis during its movement from the starting position to the insertion point.

• 1 eine Transportvorrichtung zum Transportieren von Rondenteilen bzw. Ronden zu einer Prägestation,
• 2 eine blockschaltbildähnliche teilgeschnittene Prinzipdarstellung eines Ausführungsbeispiels einer Einsetzvorrichtung zum Einsetzen von Rondenringen in Außenringe einer Ronde,
• 3 bis 6 die Einsetzvorrichtung gemäß 2 in unterschiedlichen Zuständen während des Einsetzens eines Rondenrings in einen Außenring,
• 7 bis 9 jeweils eine Prinzipdarstellung einer abgewandelten Ausführungsform eines Zentrierkörpers für die Einsetzvorrichtung aus den 2 bis 6,
• 10 ein Flussdiagramm eines Ausführungsbeispiels eines erfindungsgemäßen Verfahrens,
• 11 Rondenteile zur Herstellung einer mehrteiligen Ronde in schematischer Darstellung in einer Draufsicht,
• 12 eine aus den Rondenteilen der 11 geprägte Münze in Draufsicht und
• 13 die geprägte Münze aus 12 in einem Querschnitt gemäß der Schnittlinie XIII - XIII.

Advantageous embodiments of the invention emerge from the dependent claims, the description and the drawings. Preferred exemplary embodiments of the invention are explained in detail below with reference to the accompanying drawings. Show it:

• 1 a transport device for transporting blank parts or blanks to an embossing station,
• 2 a block diagram-like, partially sectioned basic representation of an embodiment of an insertion device for inserting circular rings into outer rings of a circular disk,
• 3 until 6th the insertion device according to 2 in different states during the insertion of a circular blank ring into an outer ring,
• 7th until 9 each a schematic representation of a modified embodiment of a centering body for the insertion device from the 2 until 6th ,
• 10 a flowchart of an embodiment of a method according to the invention,
• 11 Round parts for the production of a multi-part round blank in a schematic representation in a top view,
• 12th one from the round parts of the 11 minted coin in top view and
• 13th the minted coin 12th in a cross section according to the section line XIII - XIII.

1 is highly schematic on the transport device 20th for transporting round pieces 21 to an embossing station 22nd illustrated. The transport device 20th can have several separately drivable transport units, for example a first turret plate 23 , a second revolver plate 24 as well as a third revolver plate 25th . Each turret plate can be rotated step by step around a corresponding turret axis. Each has a revolver plate in the circumference 23 , 24 , 25th several evenly distributed receiving pockets 26th . In every pocket 26th can be one or more parts of a blank 21 be picked up and transported.

In the exemplary embodiment, the round blank is made in several parts and in particular in three parts and has an outer ring 29 , a circular ring 30th as well as a circular core 31 on. The ones from these three parts of the circle 21 existing round blank is in 11 illustrated. The circular ring 30th is located between the circular core after assembling the round blank 31 and the outer ring 29 . In this assembled state, the blank becomes an embossing station 22nd transported and there from the round a coin 32 embossed. The minted coin is in the 12th and 13th illustrated schematically.

The circular core 31 and the outer ring 29 exist in the embodiment of the round or the coin 32 made of a metallic material or a metallic alloy and, for example, of the same material. In contrast to this, the circular ring 30th be made of a less hard material and, in the exemplary embodiment, made of plastic and, in particular, a polymer material. The mass of the circular ring 30th can therefore be lower than that of the circular core 31 and that of the outer ring 29 . The circular ring 30th usually has a low spring stiffness and - depending on the material - can become statically charged during transport. At least some of these properties result in the circular ring 30th when assembling the blank and during transport cannot be handled like other metallic blank parts with a significantly greater spring stiffness and a greater mass. In addition, the circular ring has 30th a small dimension of less than 5 mm in its radial direction. It must be ensured that the circular ring 30th up to the complete assembly of the blank from the blank parts 21 is not plastically deformed or damaged. Only by minting the coin 32 in the embossing station 22nd a desired plastic deformation of the circular ring occurs 30th on, its material in inner ring grooves 33 on the circular core 31 or on the outer ring 29 flows ( 13th ). When minting the coin 32 can the outer ring 29 also an all-round edge 34 preserved on either side of the coin 32 protrudes from the respective flat side of the coin.

The parts of the blank 21 become the transport unit 20th one after the other fed and placed one inside the other. In the exemplary embodiment, there is a first feed device 38 available, by means of each one circular ring 30th in a storage pocket 26th of the first revolver plate 23 is used. By means of the first revolver plate 23 will be in the receiving pockets 26th inserted circular blank rings 30th one after the other to an insertion device 39 transported. The insertion device 39 will be about the second revolverteller 24 also the outer rings 29 individually fed. By means of a second feed device 40 become the outer rings 29 in the receiving pockets 26th of the second revolver plate 24 used, each with an outer ring 29 in every pocket 26th is arranged.

At a deployment station 41 becomes a round core each 31 into the ab by means of the insertion device 39 nested rings 29 , 30th used. Then the multi-part round blank is made with the three nested round blank parts 21 from the deployment station 41 by means of the second revolver plate 24 to a transfer point 42 transported and there for onward transport to the embossing station 22nd the third revolver plate 25th hand over. The external dimensions of the receiving pockets 26th of the third revolver plate 25th are preferably larger than that of the second turret plate 24 in order to provide sufficient clearance as when minting the coin 32 in the embossing station 22nd the diameter of the coin 32 opposite the outer ring 29 the round blank increases. By means of the third revolver plate 25th are the minted coins 32 from the embossing station 22nd transported away and at a delivery point 43 from the third revolver plate 25th released or removed by a removal device.

In one embodiment, between the second feed device 40 and the insertion device 39 a forming station 44 for forming the outer rings 29 to be available. In particular, the inner diameter of the outer rings 29 or the inner shape of the outer ring 29 set according to the specifications.

In 2 FIG. 11 is a schematic block diagram of an exemplary embodiment of an insertion device 39 illustrated. In the exemplary embodiment, the first turret plate forms 23 one first transport unit, which is set up to each have a circular ring 30th in a starting position P. to transport. The second revolver plate 24 In the exemplary embodiment, a second transport unit, which is set up for this, forms one of the outer rings in each case 29 to an insertion point E. to transport. The starting position P. and the insertion point E. are in the direction of an axis A. arranged at a distance from one another. A direction that is parallel to the axis A. is aligned is called the axial direction.

The first revolver plate 23 and the second revolver plate 24 each perform a stepping movement so that successively the in the receiving pockets 26th arranged outer rings 29 or circular rings 30th to the insertion device 39 be transported.

The insertion device 39 has one by means of a centering drive 47 along the axis A. movable centering body 48 . The centering body 48 is linearly displaceable. For example, the centering body 48 in a first guide channel 49 a first guide element 50 be slidably mounted. The guide channel 49 has adjacent to the insertion point E. an estuary 51 . Adjacent to the first guide element 50 and adjacent to the mouth 51 is the respective circumferential section of the second turret plate 24 arranged so that each one of the receiving pockets 26th on the axis A. is positioned. The inside dimensions of the receiving pockets 26th in the second revolver plate 24 is larger than the outer dimension of the outer ring 29 so that this is radial to the axis A. Is arranged to be displaceable without jamming.

The centering body 48 has one of the insertion point E. assigned free end 52 . To the free end 52 an end section closes 53 at that is from the free end 52 away radially to the axis A. expanded and expanded conically according to the example. At the free end 52 has the centering body 48 hence its smallest dimension perpendicular to the axis A. and, for example, its smallest diameter, that in the region of the end section 53 from the free end 52 increases away. The diameter at the free end 52 is smaller than the inner diameter of the outer ring 29 . The maximum outside diameter of the centering body 48 is preferably approximately as large as the inner diameter of the outer ring 29 ( 2-6 ). In this embodiment, the centering body 48 a cylindrical centering portion 54 on.

Through the cylindrical centering section 54 can the centering body 48 the outer ring 29 take full action, as stated in 3 is shown. This can not only center the outer ring 29 opposite the axis A. can be achieved, but at the same time checked whether the inner diameter of the outer ring 29 corresponds to a nominal inner diameter. For example, for the implementation of the centering body 48 through the outer ring 29 required force or a related variable, such as the motor current, can be detected. If the detected variable exceeds an assigned threshold value, it can be recognized that the inner diameter of the outer ring 29 gets smaller. This is typically the case when the tool of the forming station 44 wears out. The forming station 44 then has to be readjusted to accommodate the increasingly smaller inner diameter of the outer ring 29 to counteract. This adjustment of the settings of the forming station 44 can take place manually or automatically in the form of a control or regulation, if in the insertion device 39 it is recognized that the inner diameter of the outer rings 29 decreases.

Alternatively, it can be applied to the end area 53 subsequent cylindrical part of the centering body 48 also have a diameter that is larger than the inner diameter of the outer ring 29 ( 7-9 ). In all exemplary embodiments, the centering body 48 at least partially in the inner area of the outer ring 29 engage and with the outer ring 29 come in contact to the outer ring 29 coaxial to the axis A. at the insertion point E. to position. The outer ring is located here 29 in the pocket 26th of the second revolver plate 24 ( 2 ).

In some embodiments, the end region tapers 53 to the free end 52 towards conical ( 2-7 and 9 ). In other embodiments ( 8th ) can be the end area 53 be formed by a convexly curved region.

The insertion device 39 also has a by means of a ram drive 57 along the axis A. linearly displaceable ram 58 . The plunger 58 is in a second guide channel 59 within a second guide element 60 mounted displaceably guided. The second guide channel 59 has a mouth 61 that is adjacent to the starting position P. is arranged. The circular ring 30th is in its starting position P. inside a storage pocket 26th of the first revolver plate 23 . In the starting position P. is the outer ring 30th on a ram surface 62 of the ram 58 on. The ram surface 62 is essentially perpendicular to the axis A. aligned. The ram surface 62 is the centering body 48 facing.

Between the starting position P. and the place of insertion E. is in the embodiment of the insertion device 39 an intermediate element 65 arranged. Coaxial to the axis A. penetrates a centering channel 66 the intermediate element 65 . The centering channel 66 has for example, a yourself to the ram 58 channel section widening and preferably conically widening 67 , on which there is a cylindrical channel section in the exemplary embodiment 68 that connects to the in the centering body 48 facing side of the intermediate element 65 empties. The inside diameter of the cylindrical channel section 68 corresponds - apart from a technically necessary guide play - to the outer diameter of the circular ring 30th . Starting from this cylindrical channel section 68 the widening canal section expands 67 the inner diameter of the centering channel 66 to the ram 58 so that the maximum inner diameter of the centering channel 66 is larger than the outer diameter of the circular ring 30th .

The insertion device 39 has a control device 70 . The control device 70 generated to control the centering drive 47 a first control signal S1 and to control the ram drive 57 a second control signal S2 . About the control signals S1 , S2 are the drives 47 , 57 controlled coordinated to each other. In particular, the positions of the centering body 48 and the ram 58 coordinated controlled or optionally also regulated. A first position sensor can be used for regulation 71 be present, the one the position of the centering body 48 along the axis A. descriptive first position signal Z1 generated that to the control device 70 is transmitted. A second position sensor 72 may be present, which is the position of the plunger 58 along the axis A. descriptive second position signal Z2 generated that of the control device 70 is transmitted. The position sensors 71 , 72 are optional and can be used to set up a position control loop for the position of the centering body 48 or the position of the ram 58 be used. Alternatively, the position of the centering body 48 and the position of the ram 58 without a closed control loop by the control device 70 being controlled.

By means of the insertion device 39 becomes a circular ring each 30th in the inner area of an outer ring 29 used. The procedure is based on the in 10 illustrated flowchart and the 3 until 6th explained below:

In a first process step V1 become an outer ring 29 and a circular ring 30th to the inserter 39 transported so that the outer ring 29 at the insertion point E. and the circular ring 30th in the starting position P. is located (as in 2 illustrated). Then in a second process step V2 by means of the first control signal S1 the centering drive 47 driven to the centering body 48 in the direction of the insertion point E. to move. The centering body 48 at least partially engages in the inner area of the outer ring 29 and is preferably on the outer ring 29 so that the outer ring 29 coaxial to the axis A. is positioned ( 3 ). Simultaneously or subsequently, in a third process step V3 by the second control signal S2 the ram drive 57 driven to the ram 58 together with that on the ram surface 62 attached circular ring 30th from the starting position P. through the centering channel 66 in the direction of the insertion point E. to move ( 4th ). While moving through the centering channel E. becomes the circular ring 30th coaxial to the axis A. aligned. The movement of the centering body 48 and the ram 58 can at least partially overlap in time. At least the outer ring is 29 coaxial to the axis A. aligned before the circular ring 30th the insertion point E. reached, so that a collision between the circular blank ring 30th and the outer ring 29 is avoided ( 3 and 4th ).

In the fourth process step V4 is checked in the preferred embodiment, whether the plunger 58 during its movement towards the insertion site E. has reached a predetermined ram position. If this is not yet the case (branch neg from the fourth method step V4 ), the procedure starts with the third procedural step V3 continued. Has the plunger 58 the specified ram position and thus a specified distance from the centering body 48 reached (branch pos from the fourth process step V4 ), the procedure is in the fifth procedural step V5 continued.

In the fifth process step V5 is via the first control signal S1 the centering drive 47 driven to the centering body 48 from the place of insertion E. move away, leaving a minimum distance d between the circular ring 30th and the centering body 48 and according to the example between the circular ring 30th and the free end 52 of the centering body 48 is maintained ( 4th ). By the minimum distance d it is ensured that there is contact between the circular ring 30th and the centering body 48 when inserting the circular ring 30th in the outer ring 29 is avoided. This is intended to press on the circular ring 30th against the centering body 48 prevented to the circular ring 30th to protect against damage or deformation. Just inserting a deformed circular blank ring 30th in the outer ring 29 is often not possible. Will be the circular ring 30th when inserting into the outer ring 29 deformed, it can occur during the subsequent insertion of the circular core 31 problems arise or the insertion of the circular blank core 31 no longer be possible if the inner diameter of the circular ring 30th decreased by accidental deformation.

Then the centering body 48 by means of the centering drive 47 and the Plunger 58 by means of the ram drive 57 coordinated moves to the circular ring 30th in the outer ring 29 at the insertion point E. using the minimum distance d to maintain ( 5 ). The minimum distance to be observed d is chosen in the embodiment so that the circular ring 30th already in the interior of the outer ring 29 engages before the centering body 48 from the outer ring 29 is removed and makes contact with the outer ring 29 loses. This ensures that the outer ring 29 centered coaxially to the axis at all times A. remains.

The plunger 58 is along the axis A. moved until the circular blank ring 30th in the outer ring 29 who is at the insertion point E. is located, was used ( 6th ). Then the plunger 58 in a sixth process step V6 from the place of insertion E. moved away back to its starting position, which in 2 is illustrated. This starting position forms the ram surface 62 a support surface for the circular ring 30th in the starting position P. .

Finally, the rings are inserted into one another 29 , 30th from the place of insertion E. and from the inserter 39 transported out according to the example to the insertion station 41 to the round core 31 in the circular ring 30th to use. This transport of the nested rings 29 , 30th from the insertion device 39 out can in a seventh process step V7 respectively. In the exemplary embodiment illustrated here, this separate method step is omitted V7 . Simultaneously with the addition of a new outer ring 29 in the first process step V1 become the interlocking rings 29 , 30th that are in the pouch 26th of the second revolver plate 24 from the insertion device 39 transported out.

In order to achieve high productivity, the centering drive 47 and the ram drive 57 in the exemplary embodiment designed as electromotive drives and have no fluidically actuated drive elements. Preferably the centering drive 47 and / or the ram drive 57 gearless. In this version, the output parts of the drives 47 , 57 directly linear in the axial direction parallel to the axis A. moves and this linear movement is translation-free on the centering body 48 or the plunger 58 transfer. In particular, the centering drive 47 and / or the ram drive 57 one electric linear motor each 73 exhibit. It has been shown that in this way the number of strokes can be increased by a factor greater than two compared to known solutions with fluidic drives, to at least 500 cycles per minute, ie at least 500 circular rings can be used 30th per minute in one outer ring each 29 can be used. This is crucial in the production of coins, since coin minting presses are operated with high stroke rates and therefore a sufficiently high supply of interleaved blanks 21 must be provided in preparation for the embossing process.

In the preferred embodiment explained above, the position of the centering body 48 depending on the position of the ram 58 controlled or regulated. The control device 70 can be subordinate controls both for the centering drive 47 as well as for the slide drive 57 exhibit. This makes it easy to coordinate the drives 47 , 57 by the common control device 70 guaranteed. The control device 70 can optionally also be used to control the transport movement of one or more turret plates 23 , 24 , 25th be set up.

About the load on the circular ring 30th when inserting into the outer ring 29 An alternative to maintaining the minimum distance can be to keep it small d also a control or regulation of the drives 47 , 57 by the control device 70 take place in such a way that a contact force between the circular ring 30th and the centering body 48 or the circular ring 30th and the plunger 58 does not exceed a specified maximum contact force. In the fourth process step V4 could be checked whether there is contact between the circular ring 30th and the centering body 48 is present and then the movements of the plunger could 58 and the centering body 48 take place coordinated with one another in such a way that a predetermined maximum pressing force is not exceeded. The amount of the maximum pressing force can be specified to be very small, so that plastic deformation or damage to the circular ring 30th is sure to be avoided.

In order to detect the contact and / or the pressing force, in the centering body 48 and / or in the ram 58 at least one corresponding contact or force sensor can be arranged. In 9 an embodiment is illustrated in which at least one touch or force sensor 74 following the free end 52 in the centering body 48 is arranged to a contact and / or the pressing force between the circular ring 30th and the centering body 48 capture. Is the touch or force sensor 74 acts as a pure touch sensor, the contact can be detected and then the movement of the centering body 48 via the centering drive 47 by means of the control device 70 be controlled in such a way that the maximum predetermined pressing force is not exceeded.

In one exemplary embodiment, the pressing force can be specified or set via a control or regulation of the motor current.

The invention relates to an insertion device 39 and a method for inserting a circular ring 30th in an outer ring 29 a multi-part round blank. The insertion device 39 has a means of a ram drive 57 movable ram 58 and one by means of a centering drive 47 movable centering body 48 on. The plunger 58 and the centering body 48 are along a common axis A. moveable. The centering body 48 is coaxial with the axis A. arranged. By moving the centering body 48 along the axis A. by means of the centering drive 47 the centering body arrives 48 in contact with one at a deployment site E. arranged outer ring 29 and positions the outer ring 29 coaxial to the axis A. by at least partially in an inner region of the outer ring 29 intervenes. By means of the ram drive 57 becomes a circular ring 30th starting from a starting position P. towards the insertion point E. moved and there in the inner area of the outer ring 29 used. This is where the drives 47 , 57 by means of a control device 70 controlled in such a coordinated manner that a minimum distance d between the circular ring 30th and the centering body 48 is maintained or at least a pressing force between the circular ring 30th and the centering body 48 does not exceed a specified maximum pressing force.

List of reference symbols

20th

Transport device

21

Round part

22nd

Embossing station

23

first revolver plate

24

second revolver plate

25th

third revolver plate

26th

Receiving pocket

29

Outer ring

30th

Circular ring

31

Round core

32

coin

33

Inner ring groove

34

edge

38

first feeding device

39

Insertion device

40

second feeding device

41

Deployment station

42

Transfer point

43

Delivery point

47

Centering drive

48

Centering body

49

first guide channel

50

first guide element

51

The mouth of the first guide channel

52

free end of the centering body

53

End section

54

cylindrical centering section

57

Slide drive

58

Plunger

59

second guide channel

60

second guide element

61

Mouth of the second guide channel

62

Ram surface

65

Intermediate element

66

Centering channel

67

widening canal section

68

cylindrical channel section

70

Control device

71

first position sensor

72

second position sensor

73

Linear motor

74

Touch or force sensor

A.

axis

d

Minimum distance

E.

Insertion point

P.

Starting position

S1

first control signal

S2

second control signal

V1

first procedural step

V2

second procedural step

V3

third process step

V4

fourth procedural step

V5

fifth procedural step

V6

sixth procedural step

V7

seventh procedural step

Z1

first position signal

Z2

second position signal

Claims (14)

Insertion device (39) for inserting a circular blank ring (30) into an outer ring (29) of a multi-part circular blank, with a tappet (58) which is arranged coaxially to an axis (A) and has a tappet surface (62) which is used to act on the circular blank ring ( 30) is set up, with a plunger drive (57) which is set up to move the plunger (58) along the axis (A), with a centering body (48) which is arranged coaxially to the axis (A) and a free end ( 52), which is assigned to the ram surface (62), with a centering drive (47) for moving the centering body (48) along the axis (A), with a control unit (70) which is set up to control the centering drive (47) to be controlled in order to bring the centering body (48) into engagement with an outer ring (29) arranged at the insertion point (E) and thereby align it coaxially to the axis (A), the control unit (70) also being set up to control the plunger drive ( 57) to control the circular ring (30) dur to move the action of the plunger surface (62) to the insertion point (E) and to insert it into the outer ring (29) aligned coaxially to the axis (A) by the centering body (48), characterized in that the control unit (70) is also set up for this purpose to control the centering drive (47) and / or the plunger drive (57) in such a way, - the movements of the plunger (58) and the centering body (48) are coordinated so that a predetermined maximum pressure between the circular ring (30) and the centering body (48) is not exceeded or - that a predetermined minimum distance (d) between the circular ring (30) and the centering body (48) is not undershot. Insertion device according to Claim 1 , characterized in that the control unit (70) is set up to control the centering drive (47) and the plunger drive (57) in a coordinated manner in such a way that the position of the centering body (48) is controlled depending on the target or actual position of the plunger (58) or is regulated. Insertion device according to one of the preceding claims, characterized in that the control unit (70) is set up to control the centering drive (47) and the plunger drive (57) in a coordinated manner such that the centering body (48) engages in the outer ring (29) before the plunger (58) brings the circular ring (30) into contact with the outer ring (29). Insertion device according to one of the preceding claims, characterized in that the control unit (70) is set up to control the centering drive (47) and the plunger drive (57) in a time-coordinated manner such that the centering body (48) at least during a time phase of the insertion of the Circular ring (30) in the outer ring (29) rests on the outer ring (29), while the circular ring (30) is inserted into the inner area of the outer ring (29). Insertion device according to one of the preceding claims, characterized in that the centering drive (47) and / or the ram drive (58) are gearless. Insertion device according to one of the preceding claims, characterized in that the centering drive (47) and / or the ram drive (58) is an electromotive drive. Insertion device according to Claim 6 , characterized in that the centering drive (47) and / or the ram drive (58) has a linear motor (73). Insertion device according to one of the preceding claims, characterized in that there is a first transport unit which is set up to transport one of the circular blank rings (30) into a starting position (P) adjacent to the ram surface (62). Insertion device according to one of the preceding claims, characterized in that there is a second transport unit which is set up to transport one of the outer rings (30) to the insertion point (E). Insertion device according to Claim 8 or 9 , characterized in that the first transport unit has a first turret plate (23) which can be driven about a turret axis and which has a plurality of receiving pockets (26) each for a circular blank ring (30) and / or that the second transport unit has a second turret plate (24) which can be driven about a turret axis ), which has a plurality of receiving pockets (26) each for an outer ring (30) or a unit made up of an outer ring (29) and an inserted circular ring (30). Insertion device according to Claim 10 , characterized in that the outer ring (29) remains in the receiving pocket (26) of the second turret plate (24) when the circular ring (30) is inserted. Insertion device according to one of the preceding claims, characterized in that coaxial to the axis (A) between which in a In the retracted position, the plunger (58) and the insertion point (E) have a centering channel (66). Method for inserting a circular blank ring (30) into an outer ring (29) of a circular blank using an insertion device according to one of the preceding claims, comprising the following steps: - transporting an outer ring (29) to an insertion point (E), - transporting a circular blank ring (30 ) in an initial position (P) in the axial direction, parallel to an axis (A), adjacent to the outer ring (29), - aligning the outer ring (29) coaxially to the axis (A) by means of a centering body movable along the axis (A) ( 48), - moving the circular ring (30) in the axial direction into the outer ring (29) at the insertion point (E) by means of a plunger (58), characterized in that when the circular ring (30) is moved in the axial direction in the outer ring (29 ) - the movements of the plunger (58) and the centering body (48) are controlled coordinated with one another in such a way that a predetermined maximum pressing force between the circular ring (30) and the centering body (38) is not exceeded or he - a predetermined minimum distance (d) between the circular ring (30) and the centering body (48) is not fallen below. Procedure according to Claim 13 , characterized in that the circular ring (30) is aligned coaxially to the axis (A) during its movement from the starting position (P) to the insertion point (E).

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