EP2322352A1 - Transport device for conveying flat parts and device for printing flat parts - Google Patents
Transport device for conveying flat parts and device for printing flat parts Download PDFInfo
- Publication number
- EP2322352A1 EP2322352A1 EP10191096A EP10191096A EP2322352A1 EP 2322352 A1 EP2322352 A1 EP 2322352A1 EP 10191096 A EP10191096 A EP 10191096A EP 10191096 A EP10191096 A EP 10191096A EP 2322352 A1 EP2322352 A1 EP 2322352A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor belt
- transport device
- transport
- magazine
- support structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/007—Conveyor belts or like feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0085—Using suction for maintaining printing material flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
- B41J13/12—Sheet holders, retainers, movable guides, or stationary guides specially adapted for small cards, envelopes, or the like, e.g. credit cards, cut visiting cards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
- B65H29/14—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers and introducing into a pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
- B65H29/241—Suction devices
- B65H29/242—Suction bands or belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
- B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of the pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/22—Pile receivers removable or interchangeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H33/00—Forming counted batches in delivery pile or stream of articles
- B65H33/16—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
- B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
- B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/53—Guideways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/54—Springs, e.g. helical or leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/25—Driving or guiding arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
- B65H2701/1914—Cards, e.g. telephone, credit and identity cards
Definitions
- the invention relates to a transport device for conveying flat parts, preferably of flat plastic parts, in particular of plastic cards.
- the invention further relates to a device for printing flat parts, wherein the device has a transport device and / or a Magaziniervorraum.
- Such a transport device and such a device are made WO 2008/055466 known.
- plastic cards include, for example, ec cards, credit cards, fuel cards, access cards or identification cards.
- the challenges of printing on plastic cards arise primarily from two requirements.
- the cards should be conveyed and printed as fast as possible in order to achieve a high throughput.
- the printing should be done precisely in order to achieve a high-quality printing result.
- an improvement is to be achieved in that accurate print results can be achieved even at high throughput.
- the object is achieved by a transport device for conveying flat parts, preferably flat plastic parts, in particular plastic cards, the transport device with a conveyor belt which moves along a transport direction, and with a support structure for the conveyor belt, which carries the conveyor belt and leads along the transport direction, wherein the conveyor belt has openings, the support structure has a cavity in which a negative pressure can be generated, and the support structure is configured such that the cavity at least temporarily in communication can be brought with at least one of the openings, so that at the at least one opening, a negative pressure for holding the parts can be produced, wherein the support structure further comprises at least one lateral guide member which can come into contact with the conveyor belt in a contact area and that is formed to reduce a movement of the conveyor belt in a lateral direction transverse to the transport direction, further wherein the guide element comprises a spring element which biases the guide element on the contact area in a pressing against the conveyor belt.
- the Applicant has found that there is a previously unknown cause, which leads to a deterioration of the print quality, especially with increasing throughput. Although it has already been established in the prior art that it is necessary for good print quality to position the flat parts or the products as accurately as possible on the conveyor belt and to move the conveyor belt at the most constant possible speed.
- the Applicant has now recognized, however, that one can improve the uniform movement of the conveyor belt by means of the proposed transport device by the conveyor belt by a lateral contact force, in particular approximately transversely to the direction of movement of the conveyor belt, prevents lateral movement or at least reduces such sideways movement.
- a conveyor belt according to the prior art can not perform arbitrarily large sideways movements, if only because it is essentially fixed in the field of drive rollers, but arise due to the length of the transport path and the always - at least in small dimensions - uneven configuration the transport route and the conveyor belt Deviations along their respective longitudinal extent. These deviations during operation lead to lateral movements, vibrations and / or vibrations, which change the orientation of the product relative to the transport device, in particular relative to a printhead, which is arranged above the conveyor belt.
- the proposed transport device has the advantage that the lateral guidance of the conveyor belt is improved without jamming the conveyor belt between stationary elements and thereby causing considerable friction with an associated undesirable abrasion.
- the guide element has at least one spring element, by which the guide element is biased in a pressing direction against the conveyor belt.
- the proposed transport device has u.a. the advantage that even larger deviations, resulting for example by unevenness on the conveyor belt, can be intercepted. It should be noted by way of example on the possibility that the conveyor belt at a certain point is wider than elsewhere. If you were to use a fixed forced operation, then the conveyor belt could jam, deform or change its relative position to the transport route, for example, by it is slightly inclined.
- the transport device according to the invention can in this case in particular offer the advantage that the guide element presses with a selectable force against the conveyor belt, but none of the aforementioned dangers exists.
- the spring element can be designed such that with a slight deviation or a lower tendency to lateral movement of the conveyor belt only a small contact force against the conveyor belt acts, whereas at a larger deviation or a greater tendency to lateral movement a larger contact force acts.
- a spring element is to be understood as meaning all elements which deform on application of force and thereby generate a counterforce which results in the element substantially returning to its original shape once the application of force ceases.
- the spring element can therefore be constructed in particular of elastic materials, such as for example of a foam, or have corresponding materials.
- At least two or more guide elements of the type mentioned are arranged along the longitudinal extent of the conveyor belt.
- at least one guide element may extend in the longitudinal direction of the conveyor belt such that its length, or with several guide elements whose total length, at least 10%, preferably at least 40%, more preferably at least 75% and in particular at least 95% of the length of Transport distance is.
- At least one previously described guide element with spring element on both sides of the conveyor belt. This allows guidance of the conveyor belt according to the present invention from both sides of the conveyor belt.
- the guide element on a plate which is adapted to contact with a flat side with the conveyor belt in contact.
- This embodiment is structurally easy to implement. Since the plate with its flat side with the conveyor belt in contact, resulting in only a low friction and thus a very low or negligible wear. Regardless of this specific embodiment, there is the advantageous possibility of providing the guide element on the contact area with a friction-reducing layer or coating. Additionally or alternatively, the lateral edges of the conveyor belt may be provided with a friction reducing layer or coating.
- the guide element along a pivot axis, which is aligned in particular at least approximately parallel to the transport direction, hinged such that a first lever arm and a second lever arm are formed, wherein the first lever arm rests at least with a portion on the conveyor belt.
- the contact force applied by the guide element can be transferred particularly well to the conveyor belt.
- the pivot axis constructively interesting ways to guide the movement of the guide member when pressed against the conveyor belt.
- the pivot axis is advantageously not rigidly fixed, but at least within defined limits in the lateral direction displaced. This offers even better opportunities to absorb irregularities in the conveyor belt movement.
- a further, second spring element acts on a plate of the guide element in order to make the plate oblique.
- the inclination is chosen so that the guide element at least slightly presses with its contact area on the conveyor belt, that exerts a force component on the transport side of the conveyor belt. In this way, in addition to reducing a tendency for lateral movement of the conveyor belt, a tendency of the conveyor belt to move upwardly away from the carrier structure can be reduced or suppressed. This contributes to a further improvement in uniform movement of the conveyor belt.
- the inclination of the guide element relative to a surface normal of the conveyor belt is preferably between 0.1 ° and 30 °, more preferably between 0.2 ° and 15 ° and in particular between 0.5 ° and 5 °.
- the inclination does not have to be constant due to the compensating movements of the guide element and also does not have to be present at all times.
- the inclination can be canceled for a certain time or even form in the opposite direction. It is preferred if the inclination is selected so that during operation continuously at least a slight inclination is present.
- At least one spring element is designed as a helical spring.
- the coil spring offers a particularly good durability. It is particularly preferred in this context if the contact pressure of the spring can be adjusted by means of an adjusting element.
- the adjusting element is preferably supported on a fixed counter element, in particular on a frame of the transport device, so that in particular by actuation of the adjusting element, the coil spring can be displaced at least approximately in the lateral direction and thereby the bias can be adjusted.
- These Type of adjustment of the bias can also be done with any other spring elements.
- the support structure has at least one suction chamber and at least one connecting piece, in particular a plurality of suction chambers and a plurality of connecting pieces, in which the cavity is formed.
- This refinement makes it possible in a simple manner to generate the negative pressure along the transport path.
- the conveyor belt is designed as a toothed belt with a curved toothing.
- This embodiment allows a particularly smooth running of the conveyor belt.
- vibrations can be reduced.
- Due to the arch shape a general tendency of the conveyor belt to shift laterally can be suppressed or reduced.
- a tendency of the conveyor belt to lateral movements is effectively counteracted in connection with the guide element according to the invention.
- the transport device further has a Magaziniervorraum having a plurality of magazine receptacles which are arranged on a displacement device along a longitudinal extent of the displacement device , so that when the displacement device is moved in the same direction, all the magazine holders can repeatedly be guided past a discharge area of the transport device.
- magazine devices are used in the prior art that operate according to the following principle: Several magazine holders are arranged on a displacement device such that the magazine holders can be guided successively past a discharge area of the transport device. When the magazine at the last magazine holder is filled and has moved out of the discharge area, the filled magazines are removed, the contents are transferred to the next processing station and the empty magazines are hung again. Once all empty magazines are hung again, the displacement device moves in the opposite direction back to a starting position. From this starting position, the process starts anew, i. the magazine holders with the magazines are again guided one after the other at the discharge area.
- the Magazineiervorraum described has the advantage that the magazine holders are always moved in the same direction with the mounted therein magazines, so that a retraction of the magazine recordings is not required in a starting position. Instead, gradually filled magazines leave the discharge area, which are then gradually removed and fed to the next processing station. An empty magazine can be hooked into a magazine holder at any time.
- the magazine holders are arranged in the manner of an endless loop, so that an empty magazine can follow at any time when a full magazine is moved away from the discharge area.
- the capacity of the endless loop is chosen in particular so that after the removal of a full magazine remains sufficiently large time before the empty magazine must be mounted again in its magazine recording, and then be made available again at the discharge area. Since the capacity of the endless loop can be easily changed and adjusted, so a continuous operation of the transport device can be ensured.
- a plane in which the magazine holders move at least approximately perpendicular to the direction of gravity.
- This embodiment is particularly advantageous in terms of ease of handling when removing and hanging the magazines in the magazine shots.
- a plane in which the magazine receivers shift at least approximately parallel to a plane which is spanned by the transport direction and the direction of gravity.
- This embodiment offers a space-saving design.
- a part of the magazine device can be arranged below the transport region of the transport device.
- a plane in which the magazine receivers shift at least approximately perpendicular to the transport direction.
- This embodiment also allows a space-saving arrangement of the magazine. It is particularly advantageous if it is not possible, as described above, to arrange a part of the magazine device below the transport area.
- the object is achieved by a device for printing on flat parts, preferably of flat plastic parts, in particular of plastic cards, the device with a previously described transport device and / or with a previously described Magaziniervorraum.
- Fig. 1 shows a device 10 for printing flat parts 12, preferably of flat plastic parts, in particular of plastic cards.
- the device 10 here has a transport device 14, a magazine device 16 and a printing station 18.
- the transport device 14 is designed to convey the flat parts 12.
- the transport device 14 has a conveyor belt 20, which moves along a transport direction 22, and a support structure 24 for the conveyor belt 20, which carries the conveyor belt 20 and leads along the transport direction 22.
- the conveyor belt 20 has openings 26.
- the support structure 24 has a cavity 28 (see Fig. 2 ), in which a negative pressure can be generated.
- the support structure 24 is configured such that the cavity can be at least temporarily brought into connection with at least one of the openings 26, so that at the at least one opening 26, a negative pressure for holding the parts 12 can be generated.
- the carrier structure 24 furthermore has at least one lateral guide element 30 which can come into contact with the conveyor belt 20 in a contact region 32 and which is designed to reduce a movement of the conveyor belt 20 in a lateral direction 34 transversely to the transport direction 22.
- the guide member 30 has a spring element 36, here a plurality of spring elements 36, which biases the guide element 30 on the abutment region 32 in a pressing direction 38 against the conveyor belt 20.
- the guide member 30 is here designed as a plate which is adapted to contact with a flat side with the conveyor belt 20 in contact.
- the guide element 30 is attached at its two ends - in relation to the transport path - in the vicinity of the feed region 40 and in the vicinity of the stacking region 42.
- the device 10 works as follows. A product or a part 12 is transferred via the feed region 40 onto the conveyor belt 20 and held there by a negative pressure at the openings 26. By means of an adjusting device, not shown, the position of the part 12 can be adjusted relative to the conveyor belt 20. The part 12 then moves along the transport direction 22 to the printing station 18, where it is printed. The printing is particularly precise - even at high throughput - because the conveyor belt 20 is resiliently supported by the lateral guide member 30. After the part 12 is printed, it passes to the stacking area 42 and is there in a magazine 70 (see Fig. 4 ) stacked.
- Fig. 2 shows a section of the transport device 14 according to Fig. 1 ,
- a section line AA is shown, the resulting section is shown in a subsequent figure.
- a section is shown in an area below the conveyor belt 20.
- the spring elements 36 is designed as coil springs.
- the spring elements 36 lie at least partially within a respective sleeve 50.
- a part of an adjusting mechanism 52 is shown, by means of which the voltage of the spring element 36 between the plate 54 and a first rigid frame member 56 is set upon actuation of one of the rotary members 55 can be.
- a second spring element 58 is also shown, which acts on the plate 54 of the guide member 30 to make the guide member 30 obliquely. This will be clarified in a subsequent figure.
- the conveyor belt 20 With its other side, that is to say the side of the conveyor belt 20 which is opposite the abutment region 32, the conveyor belt 20 is supported on a second, rigid frame element 58.
- the conveyor belt 20 is fixed between the plate 54 and the second frame member 60, but due to the resilient suspension on the plate 54 can still make some movements in the lateral direction 34.
- the conveyor belt 20 is designed as a toothed belt with a curved toothing 62. Since the curved toothing 62 is located on the underside of the conveyor belt 20, the curved toothing 62 is shown by dashed lines.
- Fig. 3 shows the section along the line AA from the previous figure.
- the plate 54 is drawn obliquely.
- the angle ⁇ between the surface normal 61 of the conveyor belt 20 and the plane of the surface of the plate 54 is merely exemplified in terms of its size.
- the angle ⁇ larger or smaller can be selected.
- the guide element 30, more precisely the plate 54 has a tilting or pivoting axis 62, which is shown here merely by way of example.
- the pivot axis 62 may also be higher or lower (with respect to the Z direction).
- the pivot axis 62 is predetermined by the attachment of the plate 54.
- the pivot axis 62 is aligned at least approximately parallel to the transport direction 22.
- first lever arm 64 and a second lever arm 66.
- first spring element 36 bears against the first lever arm 64, so that the first lever arm 64 rests against the conveyor belt 20 at least with one section.
- the second spring element 58 presses counter to the pressing direction 38 against the second lever arm 66.
- the second spring element 66 is further away from the conveyor belt 20 (relative to the Z direction) than the first spring element 36 or because the point of application of the second spring element 58 on the second Lever arm 66 further away from the conveyor belt 20 as the point of application of the first spring element 36 on the first lever arm 64, creates a resultant force that prevents the conveyor belt 20 from the support structure 24 lifts.
- the support structure 24 has at least one suction chamber 68 and at least one connecting piece 69, wherein according to the representations shown above at least a plurality of connecting pieces 69 are present, in which the cavity 28 is formed.
- Fig. 4 shows the stacking 42 of a transport device 14 and a magazine 70, in which a plurality of flat parts 12 has already been stacked.
- the magazine 70 is associated with a stacking bottom 72, which moves during the filling of the magazine 70 from an upper position 74 to a lower position 76. If the magazine 70 is full - as shown here - the magazine 70 must be exchanged for an empty magazine 70. This task can be carried out particularly efficiently by means of a magazine device 16.
- the drive belt 78 passes around a first roller 78 'and a second roller 78 "; the second drive belt runs around a first roller 80' and a second roller 80".
- Fig. 5 shows a Magaziniervorraum 16 according to the present invention.
- the Magazineiervoriques 16 has a plurality of magazine receptacles 82 which are arranged on an endless drive 84 along a longitudinal extent of the endless drive 84, so that in the same direction displacement of the endless drive 84, here along the drive direction 86, all magazine receptacles 82 repeatedly at the discharge area 88 of the transport device 14 can be passed.
- the plane 90 in which the endless drive belt 84 extends is at least approximately perpendicular to the direction of gravity, i. to the negative Z direction (-Z).
- the operation of the device is as follows.
- the transport device continuously parts 12 are stacked on the discharge area 88 of the transport device 14.
- Fig. 6 shows a second embodiment of a Magaziniervorraum 16 '.
- the principle of this Magaziniervortechnik 16 ' corresponds to the principle of However, the orientation of the endless drive 84 'is chosen here so that the plane in which the endless drive 84' extends, at least approximately parallel to a plane 90 ', of the transport direction 22 and the direction of gravity ( -Z) is clamped.
- the plane here corresponds to the XZ plane, ie the drawing plane shown here.
- a third embodiment of a magaziniervorraum 16 "follows the same principle as the Magaziniervortechnischen described above 16.
- a plane 90 in which the endless drive belt 84 "extends, at least approximately perpendicular to the transport direction 22, that is perpendicular to the X direction.
- the plane 90 corresponds to the drawing plane of this figure, ie the YZ plane.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Belt Conveyors (AREA)
Abstract
Description
Die Erfindung betrifft eine Transportvorrichtung zum Fördern von flächigen Teilen, bevorzugt von flachen Kunststoffteilen, insbesondere von Plastikkarten.The invention relates to a transport device for conveying flat parts, preferably of flat plastic parts, in particular of plastic cards.
Die Erfindung betrifft ferner eine Vorrichtung zum Bedrucken flächiger Teile, wobei die Vorrichtung eine Transportvorrichtung und/oder eine Magaziniervorrichtung aufweist.The invention further relates to a device for printing flat parts, wherein the device has a transport device and / or a Magaziniervorrichtung.
Eine solche Transportvorrichtung und eine solche Vorrichtung sind aus
Das Bedrucken von flächigen Teilen, insbesondere von Plastikkarten, ist bereits seit langem bekannt. Zu derartigen Plastikkarten zählen beispielsweise ec-Karten, Kreditkarten, Tankkarten, Zugangskarten oder Ausweiskarten.The printing of flat parts, in particular of plastic cards, has long been known. Such plastic cards include, for example, ec cards, credit cards, fuel cards, access cards or identification cards.
Die Herausforderungen beim Bedrucken von Plastikkarten ergeben sich in erster Linie durch zwei Anforderungen. Zum einen sollen die Karten möglichst schnell gefördert und bedruckt werden, um einen hohen Durchsatz zu erreichen. Zum anderen soll die Bedruckung präzise erfolgen, um ein qualitativ hochwertiges Druckergebnis zu erzielen.The challenges of printing on plastic cards arise primarily from two requirements. On the one hand, the cards should be conveyed and printed as fast as possible in order to achieve a high throughput. On the other hand, the printing should be done precisely in order to achieve a high-quality printing result.
Insbesondere im Hinblick auf einen hohen Durchsatz bei hoher Druckqualität hat der Stand der Technik bislang keine Lösung aufzeigen können. Vielmehr ist es so, dass eine Erhöhung des Durchsatzes mit einer Verschlechterung der Druckqualität einhergeht und umgekehrt. Die eingangs zitierte Schrift hat sich auch mit dieser Problematik befasst und spezielle Ausrichtmittel zum Ausrichten der Plastikkarten auf einer Transportvorrichtung vorgeschlagen. Es verbleibt jedoch weiterhin der Bedarf an einer verbesserten Lösung.In particular, with regard to a high throughput with high print quality, the prior art has so far been unable to show a solution. Rather, it is such that an increase in throughput is associated with a deterioration in print quality and vice versa. The cited document has also dealt with this problem and proposed special alignment means for aligning the plastic cards on a transport device. However, there remains the need for an improved solution.
Es ist eine Aufgabe der vorliegenden Erfindung, eine verbesserte Transportvorrichtung zum Fördern von flächigen Teilen und eine verbesserte Vorrichtung zum Bedrucken flächiger Teile aufzuzeigen. Dabei soll insbesondere eine Verbesserung dahingehend erzielt werden, dass auch bei hohem Durchsatz genaue Druckergebnisse erzielt werden können.It is an object of the present invention to provide an improved transporting device for conveying flat parts and an improved device for printing flat parts. In particular, an improvement is to be achieved in that accurate print results can be achieved even at high throughput.
Gemäß einem ersten Aspekt der Erfindung wird die Aufgabe gelöst durch eine Transportvorrichtung zum Fördern von flächigen Teilen, bevorzugt von flachen Kunststoffteilen, insbesondere von Plastikkarten, die Transportvorrichtung mit einem Transportband, das sich entlang einer Transportrichtung bewegt, und mit einem Trägeraufbau für das Transportband, der das Transportband trägt und entlang der Transportrichtung führt, wobei das Transportband Öffnungen aufweist, der Trägeraufbau einen Hohlraum aufweist, in dem ein Unterdruck erzeugt werden kann, und der Trägeraufbau derart ausgestaltet ist, dass der Hohlraum zumindest zeitweise in Verbindung mit mindestens einer der Öffnungen gebracht werden kann, so dass an der mindestens einen Öffnung ein Unterdruck zum Halten der Teile erzeugt werden kann, wobei der Trägeraufbau ferner mindestens ein seitliches Führungselement aufweist, das in einem Anlagebereich mit dem Transportband in Kontakt treten kann und das dafür ausgebildet ist, eine Bewegung des Transportbands in einer Seitenrichtung quer zur Transportrichtung zu reduzieren, wobei ferner das Führungselement ein Federelement aufweist, das das Führungselement am Anlagebereich in einer Anpressrichtung gegen das Transportband vorspannt.According to a first aspect of the invention, the object is achieved by a transport device for conveying flat parts, preferably flat plastic parts, in particular plastic cards, the transport device with a conveyor belt which moves along a transport direction, and with a support structure for the conveyor belt, which carries the conveyor belt and leads along the transport direction, wherein the conveyor belt has openings, the support structure has a cavity in which a negative pressure can be generated, and the support structure is configured such that the cavity at least temporarily in communication can be brought with at least one of the openings, so that at the at least one opening, a negative pressure for holding the parts can be produced, wherein the support structure further comprises at least one lateral guide member which can come into contact with the conveyor belt in a contact area and that is formed to reduce a movement of the conveyor belt in a lateral direction transverse to the transport direction, further wherein the guide element comprises a spring element which biases the guide element on the contact area in a pressing against the conveyor belt.
Im Rahmen der Erfindung hat die Anmelderin festgestellt, dass es eine bisher unbekannte Ursache gibt, die zu einer Verschlechterung der Druckqualität, insbesondere bei steigendem Durchsatz, führt. Im Stand der Technik wurde zwar bereits festgestellt, dass es für eine gute Druckqualität erforderlich ist, die flächigen Teile bzw. die Produkte möglichst genau auf dem Transportband zu positionieren und das Transportband mit möglichst konstanter Geschwindigkeit zu bewegen.In the context of the invention, the Applicant has found that there is a previously unknown cause, which leads to a deterioration of the print quality, especially with increasing throughput. Although it has already been established in the prior art that it is necessary for good print quality to position the flat parts or the products as accurately as possible on the conveyor belt and to move the conveyor belt at the most constant possible speed.
Die Anmelderin hat nun aber erkannt, dass man mittels der vorgeschlagenen Transportvorrichtung die gleichförmige Bewegung des Transportbands verbessern kann, indem man das Transportband durch eine seitliche Anpresskraft, insbesondere in etwa quer zur Bewegungsrichtung des Transportbands, an einer Seitwärtsbewegung hindert oder zumindest eine solche Seitwärtsbewegung reduziert.The Applicant has now recognized, however, that one can improve the uniform movement of the conveyor belt by means of the proposed transport device by the conveyor belt by a lateral contact force, in particular approximately transversely to the direction of movement of the conveyor belt, prevents lateral movement or at least reduces such sideways movement.
Zwar kann auch ein Transportband gemäß dem Stand der Technik nicht beliebig große Seitwärtsbewegungen durchführen, allein schon deshalb, weil es im Bereich der Antriebsrollen im Wesentlichen festgelegt ist, doch ergeben sich aufgrund der Länge der Transportstrecke sowie der stets - zumindest in geringen Maßen - ungleichmäßigen Ausgestaltung der Transportstrecke und des Transportbands entlang ihrer jeweiligen Längserstreckung Abweichungen. Diese Abweichungen führen während des Betriebs zu seitlichen Bewegungen, Schwingungen und/oder Vibrationen, die die Ausrichtung des Produkts relativ zur Transportvorrichtung verändern, dabei insbesondere relativ zu einem Druckkopf, der oberhalb des Transportbands angeordnet ist.Although a conveyor belt according to the prior art can not perform arbitrarily large sideways movements, if only because it is essentially fixed in the field of drive rollers, but arise due to the length of the transport path and the always - at least in small dimensions - uneven configuration the transport route and the conveyor belt Deviations along their respective longitudinal extent. These deviations during operation lead to lateral movements, vibrations and / or vibrations, which change the orientation of the product relative to the transport device, in particular relative to a printhead, which is arranged above the conveyor belt.
Die vorgeschlagene Transportvorrichtung bietet den Vorteil, dass die seitliche Führung des Transportbands verbessert wird, ohne dabei das Transportband zwischen feststehenden Elementen einzuklemmen und dadurch eine erhebliche Reibung mit einem damit verbundenen unerwünschten Abrieb zu bewirken. Vielmehr weist das Führungselement zumindest ein Federelement auf, durch das das Führungselement in einer Anpressrichtung gegen das Transportband vorgespannt wird.The proposed transport device has the advantage that the lateral guidance of the conveyor belt is improved without jamming the conveyor belt between stationary elements and thereby causing considerable friction with an associated undesirable abrasion. Rather, the guide element has at least one spring element, by which the guide element is biased in a pressing direction against the conveyor belt.
Gegenüber einer feststehenden Zwangsführung hat die vorgeschlagene Transportvorrichtung u.a. den Vorteil, dass auch größere Abweichungen, die sich beispielsweise durch Ungleichmäßigkeiten am Transportband ergeben, abgefangen werden können. Dabei sei beispielhaft auf die Möglichkeit hingewiesen, dass das Transportband an einer bestimmten Stelle breiter ist als an anderen Stellen. Würde man eine feststehende Zwangsführung verwenden, so könnte sich das Transportband verklemmen, verformen oder seine relative Lage zur Transportstrecke verändern, beispielsweise indem es sich leicht schräg stellt. Die erfindungsgemäße Transportvorrichtung kann hierbei insbesondere den Vorteil bieten, dass das Führungselement mit einer wählbaren Kraft gegen das Transportband drückt, dabei aber keine der zuvor genannten Gefahren besteht.Compared to a fixed forced operation, the proposed transport device has u.a. the advantage that even larger deviations, resulting for example by unevenness on the conveyor belt, can be intercepted. It should be noted by way of example on the possibility that the conveyor belt at a certain point is wider than elsewhere. If you were to use a fixed forced operation, then the conveyor belt could jam, deform or change its relative position to the transport route, for example, by it is slightly inclined. The transport device according to the invention can in this case in particular offer the advantage that the guide element presses with a selectable force against the conveyor belt, but none of the aforementioned dangers exists.
Einer der weiteren Vorteile der Erfindung liegt darin, dass das Federelement derart ausgebildet sein kann, dass bei einer geringen Abweichung bzw. einer geringeren Tendenz zu einer seitlichen Bewegung des Transportbands auch nur eine geringe Anpresskraft gegen das Transportband wirkt, wohingegen bei einer größeren Abweichung bzw. einer größeren Tendenz zu einer seitlichen Bewegung eine größere Anpresskraft wirkt.One of the further advantages of the invention is that the spring element can be designed such that with a slight deviation or a lower tendency to lateral movement of the conveyor belt only a small contact force against the conveyor belt acts, whereas at a larger deviation or a greater tendency to lateral movement a larger contact force acts.
Unter einem Federelement sollen im Zusammenhang mit dieser Erfindung alle Elemente verstanden werden, die sich bei einer Kraftbeaufschlagungverformen und dabei eine Gegenkraft erzeugen, die dazu führt, dass das Element nach Wegfall der Kraftbeaufschlagung im Wesentlichen wieder in seine ursprüngliche Form zurückkehrt. Das Federelement kann daher insbesondere aus elastischen Materialien aufgebaut sein, wie beispielsweise aus einem Schaumstoff, oder entsprechende Materialien aufweisen.In the context of this invention, a spring element is to be understood as meaning all elements which deform on application of force and thereby generate a counterforce which results in the element substantially returning to its original shape once the application of force ceases. The spring element can therefore be constructed in particular of elastic materials, such as for example of a foam, or have corresponding materials.
Im Hinblick auf das Führungselement ist es vorteilhaft, wenn entlang der Längserstreckung des Transportbands mindestens zwei bzw. mehrere Führungselemente der genannten Art angeordnet sind. Alternativ dazu oder zusätzlich kann sich zumindest ein Führungselement derart in Längsrichtung des Transportbands erstrecken, dass seine Länge, bzw. bei mehreren Führungselementen deren Gesamtlänge, mindestens 10 %, bevorzugt mindestens 40 %, besonders bevorzugt mindestens 75 % und insbesondere mindestens 95 % der Länge der Transportstrecke beträgt.With regard to the guide element, it is advantageous if along the longitudinal extent of the conveyor belt at least two or more guide elements of the type mentioned are arranged. Alternatively or additionally, at least one guide element may extend in the longitudinal direction of the conveyor belt such that its length, or with several guide elements whose total length, at least 10%, preferably at least 40%, more preferably at least 75% and in particular at least 95% of the length of Transport distance is.
Es ist ferner von Vorteil, wenn die Transportvorrichtung an der Seite des Transportbands, die der Seite mit dem Anlagebereich gegenüberliegt, ein feststehender Anschlag angeordnet ist, der das Transportband seitlich führt. Diese Ausgestaltung ist kostengünstig zu realisieren. Dabei wird eine gute Seitenführung des Transportbands sichergestellt, wobei durch das Führungselement mit dem Federelement an der anderen Seite weiterhin alle Vorteile der Erfindung realisiert werden können.It is also advantageous if the transport device on the side of the conveyor belt, which is opposite to the side with the contact area, a fixed stop is arranged, which leads the conveyor laterally. This embodiment is inexpensive to implement. In this case, a good lateral guidance of the conveyor belt is ensured, with all the advantages of the invention can be realized by the guide element with the spring element on the other side.
In bestimmten Anwendungsfällen kann es vorteilhaft sein, an beiden Seiten des Transportbands jeweils zumindest ein zuvor beschriebenes Führungselement mit Federelement anzuordnen. Dies ermöglicht eine Führung des Transportbands gemäß der vorliegenden Erfindung von beiden Seiten des Transportbands.In certain applications, it may be advantageous to arrange at least one previously described guide element with spring element on both sides of the conveyor belt. This allows guidance of the conveyor belt according to the present invention from both sides of the conveyor belt.
Damit ist die Aufgabe vollständig gelöst.This completes the task.
Bei einer vorteilhaften Ausgestaltung der Erfindung weist das Führungselement eine Platte auf, die dafür ausgebildet ist, mit einer flachen Seite mit dem Transportband in Kontakt zu treten.In an advantageous embodiment of the invention, the guide element on a plate which is adapted to contact with a flat side with the conveyor belt in contact.
Diese Ausgestaltung ist konstruktiv einfach zu realisieren. Da die Platte mit ihrer flachen Seite mit dem Transportband in Kontakt tritt, ergibt sich nur eine geringe Reibung und damit ein sehr geringer bzw. zu vernachlässigender Verschleiß. Unabhängig von dieser konkreten Ausgestaltung besteht die vorteilhafte Möglichkeit, das Führungselement am Anlagebereich mit einer reibungsreduzierenden Schicht oder Beschichtung zu versehen. Zusätzlich oder alternativ dazu können die seitlichen Ränder des Transportbands mit einer reibungsreduzierenden Schicht oder Beschichtung versehen sein.This embodiment is structurally easy to implement. Since the plate with its flat side with the conveyor belt in contact, resulting in only a low friction and thus a very low or negligible wear. Regardless of this specific embodiment, there is the advantageous possibility of providing the guide element on the contact area with a friction-reducing layer or coating. Additionally or alternatively, the lateral edges of the conveyor belt may be provided with a friction reducing layer or coating.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist das Führungselement entlang einer Schwenkachse, die insbesondere zumindest ungefähr parallel zur Transportrichtung ausgerichtet ist, derart angelenkt, dass ein erster Hebelarm und ein zweiter Hebelarm gebildet sind, wobei der erste Hebelarm zumindest mit einem Abschnitt am Transportband anliegt.In a further advantageous embodiment of the invention, the guide element along a pivot axis, which is aligned in particular at least approximately parallel to the transport direction, hinged such that a first lever arm and a second lever arm are formed, wherein the first lever arm rests at least with a portion on the conveyor belt.
Bei dieser Ausgestaltung lässt sich die vom Führungselement aufgebrachte Anpresskraft besonders gut auf das Transportband übertragen. Außerdem ergeben sich bei entsprechender Wahl der Schwenkachse konstruktiv interessante Möglichkeiten, die Bewegung des Führungselements beim Anpressen gegen das Transportband zu führen. Dabei ist die Schwenkachse vorteilhafterweise nicht starr festgelegt, sondern zumindest innerhalb definierter Grenzen in Seitenrichtung verlagerbar. Dies bietet nochmals verbesserte Möglichkeiten, Ungleichmäßigkeiten bei der Transportbandbewegung aufzufangen.In this embodiment, the contact force applied by the guide element can be transferred particularly well to the conveyor belt. In addition, with appropriate choice of the pivot axis constructively interesting ways to guide the movement of the guide member when pressed against the conveyor belt. The pivot axis is advantageously not rigidly fixed, but at least within defined limits in the lateral direction displaced. This offers even better opportunities to absorb irregularities in the conveyor belt movement.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung wirkt zusätzlich zu dem genannten, ersten Federelement ein weiteres, zweites Federelement auf eine Platte des Führungselements ein, um die Platte schräg anzustellen.In a further advantageous embodiment of the invention, in addition to said first spring element, a further, second spring element acts on a plate of the guide element in order to make the plate oblique.
Die Schrägstellung wird dabei so gewählt, dass das Führungselement mit seinem Anlagebereich zumindest geringfügig auf das Transportband drückt, also mit einer Kraftkomponente auf die Transportseite des Transportbands ausübt. Auf diese Weise kann zusätzlich zu einer Reduzierung einer Tendenz zu einer seitlichen Bewegung des Transportbands auch eine Tendenz des Transportbands zu einer aufwärtigen Bewegung vom Trägeraufbau weg reduziert bzw. unterdrückt werden. Dies trägt zu einer weiteren Verbesserung einer gleichmäßigen Bewegung des Transportbands bei. Die Schrägstellung des Führungselements relativ zu einer Oberflächennormalen des Transportbands beträgt bevorzugt zwischen 0,1° und 30°, besonders bevorzugt zwischen 0,2° und 15° und insbesondere zwischen 0,5° und 5°.The inclination is chosen so that the guide element at least slightly presses with its contact area on the conveyor belt, that exerts a force component on the transport side of the conveyor belt. In this way, in addition to reducing a tendency for lateral movement of the conveyor belt, a tendency of the conveyor belt to move upwardly away from the carrier structure can be reduced or suppressed. This contributes to a further improvement in uniform movement of the conveyor belt. The inclination of the guide element relative to a surface normal of the conveyor belt is preferably between 0.1 ° and 30 °, more preferably between 0.2 ° and 15 ° and in particular between 0.5 ° and 5 °.
Dabei sei darauf hingewiesen, dass die Schrägstellung aufgrund der ausgleichenden Bewegungen des Führungselements nicht konstant sein muss und auch nicht zu jeder Zeit vorhanden sein muss. Insbesondere wenn größere Abweichungen in Seitenrichtung vom Führungselement aufgefangen werden müssen, kann die Schrägstellung für eine gewisse Zeit aufgehoben sein oder sich sogar in die entgegengesetzte Richtung auszubilden. Bevorzugt ist es, wenn die Schrägstellung so gewählt wird, dass während des Betriebs kontinuierlich zumindest eine geringe Schrägstellung vorhanden ist.It should be noted that the inclination does not have to be constant due to the compensating movements of the guide element and also does not have to be present at all times. In particular, when larger deviations in the lateral direction have to be absorbed by the guide element, the inclination can be canceled for a certain time or even form in the opposite direction. It is preferred if the inclination is selected so that during operation continuously at least a slight inclination is present.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist zumindest ein Federelement als Schraubenfeder ausgestaltet.In a further advantageous embodiment of the invention, at least one spring element is designed as a helical spring.
Diese Ausgestaltung ermöglicht eine einfache Realisierung des Federelements. Zudem bietet die Schraubenfeder eine besonders gute Dauerhaltbarkeit. Besonders bevorzugt ist es in diesem Zusammenhang, wenn die Anpresskraft der Feder mittels eines Justierelements eingestellt werden kann. Dabei stützt sich das Justierelement bevorzugt an einem feststehenden Gegenelement ab, insbesondere an einem Rahmen der Transportvorrichtung, so dass insbesondere durch eine Betätigung des Justierelements die Schraubenfeder zumindest in etwa in Seitenrichtung verlagert werden kann und dadurch die Vorspannung eingestellt werden kann. Diese Art der Einstellung der Vorspannung kann auch bei beliebigen anderen Federelementen erfolgen.This embodiment enables a simple realization of the spring element. In addition, the coil spring offers a particularly good durability. It is particularly preferred in this context if the contact pressure of the spring can be adjusted by means of an adjusting element. In this case, the adjusting element is preferably supported on a fixed counter element, in particular on a frame of the transport device, so that in particular by actuation of the adjusting element, the coil spring can be displaced at least approximately in the lateral direction and thereby the bias can be adjusted. These Type of adjustment of the bias can also be done with any other spring elements.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung weist der Trägeraufbau mindestens eine Saugkammer und mindestens ein Anschlussstück auf, insbesondere mehrere Saugkammern und mehrere Anschlussstücke, in denen der Hohlraum ausgebildet ist.In a further advantageous embodiment of the invention, the support structure has at least one suction chamber and at least one connecting piece, in particular a plurality of suction chambers and a plurality of connecting pieces, in which the cavity is formed.
Diese Ausgestaltung ermöglicht auf einfache Weise das Erzeugen des Unterdrucks entlang der Transportstrecke.This refinement makes it possible in a simple manner to generate the negative pressure along the transport path.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist das Transportband als Zahnriemen mit einer Bogenverzahnung ausgestaltet.In a further advantageous embodiment of the invention, the conveyor belt is designed as a toothed belt with a curved toothing.
Diese Ausgestaltung ermöglicht einen besonders gleichmäßigen Lauf des Transportbands. Insbesondere Schwingungen können reduziert werden. Aufgrund der Bogenform kann auch eine allgemeine Tendenz des Transportbands, sich seitlich zu verlagern, unterdrückt bzw. reduziert werden. Dadurch wird im Zusammenhang mit dem erfindungsgemäßen Führungselement einer Tendenz des Transportbands zu seitlichen Bewegungen effektiv entgegengewirkt.This embodiment allows a particularly smooth running of the conveyor belt. In particular, vibrations can be reduced. Due to the arch shape, a general tendency of the conveyor belt to shift laterally can be suppressed or reduced. As a result, a tendency of the conveyor belt to lateral movements is effectively counteracted in connection with the guide element according to the invention.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung, die auch für sich genommen ohne das genannte Führungselement eine erfinderische Weiterbildung gegenüber dem Stand der Technik darstellt, hat die Transportvorrichtung ferner eine Magaziniervorrichtung, die mehrere Magazinaufnahmen aufweist, die an einer Verlagerungseinrichtung entlang einer Längserstreckung der Verlagerungseinrichtung angeordnet sind, so dass bei gleichsinniger Verlagerung der Verlagerungseinrichtung alle Magazinaufnahmen wiederholt an einem Abwurfbereich der Transportvorrichtung vorbeigeführt werden können.In a further advantageous embodiment of the invention, which in itself without the said guide element represents an inventive development over the prior art, the transport device further has a Magaziniervorrichtung having a plurality of magazine receptacles which are arranged on a displacement device along a longitudinal extent of the displacement device , so that when the displacement device is moved in the same direction, all the magazine holders can repeatedly be guided past a discharge area of the transport device.
Bei Transportvorrichtungen gemäß der zuvor beschriebenen Art werden im Stand der Technik Magaziniervorrichtungen verwendet, die nach folgendem Prinzip arbeiten: Mehrere Magazinaufnahmen sind an einer Verlagerungseinrichtung derart angeordnet, dass die Magazinaufnahmen nacheinander an einem Abwurfbereich der Transportvorrichtung vorbeigeführt werden können. Wenn das Magazin an der letzten Magazinaufnahme gefüllt ist und aus dem Abwurfbereich herausgefahren ist, werden die gefüllten Magazine entnommen, der Inhalt an die nächste Verarbeitungsstation übergeben und die leeren Magazine wieder eingehängt. Sobald alle leeren Magazine wieder eingehängt sind, fährt die Verlagerungseinrichtung in entgegengesetzter Richtung zurück in eine Ausgangsposition. Aus dieser Ausgangsposition heraus beginnt der Prozess von neuem, d.h. die Magazinaufnahmen mit den Magazinen werden wieder nacheinander am Abwurfbereich vorbeigeführt.In transport devices according to the previously described type, magazine devices are used in the prior art that operate according to the following principle: Several magazine holders are arranged on a displacement device such that the magazine holders can be guided successively past a discharge area of the transport device. When the magazine at the last magazine holder is filled and has moved out of the discharge area, the filled magazines are removed, the contents are transferred to the next processing station and the empty magazines are hung again. Once all empty magazines are hung again, the displacement device moves in the opposite direction back to a starting position. From this starting position, the process starts anew, i. the magazine holders with the magazines are again guided one after the other at the discharge area.
Diese Vorgehensweise ist jedoch nachteilig, da nach dem Füllen des letzten Magazins in der Reihe von Magazinen immer eine erhebliche Unterbrechung entsteht, bevor die Magazine wieder in ihrer Ausgangsposition sind und wieder die genannten flächigen Teile bzw. Produkte aufnehmen können.However, this procedure is disadvantageous because after the filling of the last magazine in the series of magazines always a significant interruption arises before the magazines are back in their original position and can resume the said sheet-like parts or products.
Die beschriebene Magaziniervorrichtung hat den Vorteil, dass die Magazinaufnahmen mit den darin eingehängten Magazinen stets gleichsinnig verlagert werden, so dass ein Zurückfahren der Magazinaufnahmen in eine Ausgangsposition nicht erforderlich ist. Stattdessen verlassen nach und nach gefüllte Magazine den Abwurfbereich, die dann nach und nach entnommen werden und der nächsten Verarbeitungsstation zugeführt werden können. Ein leeres Magazin kann zu jeder Zeit wieder in eine Magazinaufnahme eingehängt werden.The Magaziniervorrichtung described has the advantage that the magazine holders are always moved in the same direction with the mounted therein magazines, so that a retraction of the magazine recordings is not required in a starting position. Instead, gradually filled magazines leave the discharge area, which are then gradually removed and fed to the next processing station. An empty magazine can be hooked into a magazine holder at any time.
Die Magazinaufnahmen sind dabei in der Art einer Endlosschleife angeordnet, so dass zu jedem Zeitpunkt ein leeres Magazin nachfolgen kann, wenn ein volles Magazin aus dem Abwurfbereich weg bewegt wird. Die Kapazität der Endlosschleife wird dabei insbesondere so gewählt, dass nach der Entnahme eines vollen Magazins eine ausreichend große Zeit verbleibt, bevor das leere Magazin wieder in seiner Magazinaufnahme eingehängt sein muss, um dann wieder am Abwurfbereich zur Verfügung gestellt zu werden. Da sich die Kapazität der Endlosschleife leicht verändern und anpassen lässt, kann so ein fortlaufendes Arbeiten der Transportvorrichtung sichergestellt werden.The magazine holders are arranged in the manner of an endless loop, so that an empty magazine can follow at any time when a full magazine is moved away from the discharge area. The capacity of the endless loop is chosen in particular so that after the removal of a full magazine remains sufficiently large time before the empty magazine must be mounted again in its magazine recording, and then be made available again at the discharge area. Since the capacity of the endless loop can be easily changed and adjusted, so a continuous operation of the transport device can be ensured.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist eine Ebene, in der sich die Magazinaufnahmen verlagern, zumindest in etwa senkrecht zur Schwerkraftrichtung.In a further advantageous embodiment of the invention, a plane in which the magazine holders move, at least approximately perpendicular to the direction of gravity.
Diese Ausgestaltung ist besonders vorteilhaft im Hinblick auf eine einfache Handhabung beim Entnehmen und Einhängen der Magazine in die Magazinaufnahmen.This embodiment is particularly advantageous in terms of ease of handling when removing and hanging the magazines in the magazine shots.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist eine Ebene, in der sich die Magazinaufnahmen verlagern, zumindest in etwa parallel zu einer Ebene, die von der Transportrichtung und der Schwerkraftrichtung aufgespannt ist.In a further advantageous embodiment of the invention, a plane in which the magazine receivers shift, at least approximately parallel to a plane which is spanned by the transport direction and the direction of gravity.
Diese Ausgestaltung bietet einen platzsparenden Aufbau. Insbesondere wird es ermöglicht, dass ein Teil der Magaziniervorrichtung unterhalb des Transportbereichs der Transportvorrichtung angeordnet werden kann.This embodiment offers a space-saving design. In particular, it is possible that a part of the magazine device can be arranged below the transport region of the transport device.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung ist eine Ebene, in der sich die Magazinaufnahmen verlagern, zumindest in etwa senkrecht zur Transportrichtung.In a further advantageous embodiment of the invention, a plane in which the magazine receivers shift, at least approximately perpendicular to the transport direction.
Auch diese Ausgestaltung ermöglicht eine platzsparende Anordnung der Magaziniervorrichtung. Sie ist insbesondere dann vorteilhaft, wenn es nicht, wie zuvor beschrieben, möglich ist, einen Teil der Magaziniervorrichtung unterhalb des Transportbereichs anzuordnen.This embodiment also allows a space-saving arrangement of the magazine. It is particularly advantageous if it is not possible, as described above, to arrange a part of the magazine device below the transport area.
Gemäß einem zweiten Aspekt der Erfindung wird die Aufgabe gelöst durch eine Vorrichtung zum Bedrucken flächiger Teile, bevorzugt von flachen Kunststoffteilen, insbesondere von Plastikkarten, die Vorrichtung mit einer zuvor beschriebenen Transportvorrichtung und/oder mit einer zuvor beschriebenen Magaziniervorrichtung.According to a second aspect of the invention, the object is achieved by a device for printing on flat parts, preferably of flat plastic parts, in particular of plastic cards, the device with a previously described transport device and / or with a previously described Magaziniervorrichtung.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Ausführungsbeispiele der Erfindung sind in der Zeichnung näher dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- eine Draufsicht auf ein Ausführungsbeispiel einer Transportvorrich- tung;
- Fig. 2
- einen Detailausschnitt der Transportvorrichtung gemäß
Fig. 1 ; - Fig. 3
- einen Schnitt durch die Transportvorrichtung gemäß
Fig. 1 entlang der Linie A-A gemäßFig. 2 ; - Fig. 4
- den Abwurfbereich der Transportvorrichtung gemäß
Fig. 1 mit einem am Abwurfbereich angeordneten Magazin; - Fig. 5
- den Abwurfbereich der Transportvorrichtung gemäß
Fig. 1 mit einer dahinter angeordneten Magaziniervorrichtung gemäß einer ersten Aus- führungsform; - Fig. 6
- den Abwurfbereich der Transportvorrichtung gemäß
Fig. 1 mit einer dahinter angeordneten Magaziniervorrichtung gemäß einer zweiten Ausführungsform; und - Fig. 7
- den Abwurfbereich der Transportvorrichtung gemäß
Fig. 1 mit einer dahinter angeordneten Magaziniervorrichtung gemäß einer dritten Ausführungsform.
- Fig. 1
- a plan view of an embodiment of a transport device;
- Fig. 2
- a detail of the transport device according to
Fig. 1 ; - Fig. 3
- a section through the transport device according to
Fig. 1 along the line AA according toFig. 2 ; - Fig. 4
- the discharge area of the transport device according to
Fig. 1 with a magazine arranged at the discharge area; - Fig. 5
- the discharge area of the transport device according to
Fig. 1 with a magazine device arranged behind it according to a first embodiment; - Fig. 6
- the discharge area of the transport device according to
Fig. 1 with a storage device arranged behind it according to a second embodiment; and - Fig. 7
- the discharge area of the transport device according to
Fig. 1 with a storage device arranged behind it according to a third embodiment.
Die Transportvorrichtung 14 ist zum Fördern der flächigen Teile 12 ausgebildet. Die Transportvorrichtung 14 hat ein Transportband 20, das sich entlang einer Transportrichtung 22 bewegt, und einen Trägeraufbau 24 für das Transportband 20, der das Transportband 20 trägt und entlang der Transportrichtung 22 führt. Das Transportband 20 weist Öffnungen 26 auf.The
Der Trägeraufbau 24 weist einen Hohlraum 28 (siehe
Der Trägeraufbau 24 weist ferner mindestens ein seitliches Führungselement 30 auf, das in einem Anlagebereich 32 mit dem Transportband 20 in Kontakt treten kann und das dafür ausgebildet ist, eine Bewegung des Transportbands 20 in einer Seitenrichtung 34 quer zur Transportrichtung 22 zu reduzieren. Das Führungselement 30 weist ein Federelement 36 auf, hier eine Vielzahl von Federelementen 36, das das Führungselement 30 am Anlagebereich 32 in einer Anpressrichtung 38 gegen das Transportband 20 vorspannt.The
Das Führungselement 30 ist hier als Platte ausgeführt, die dafür ausgebildet ist, mit einer flachen Seite mit dem Transportband 20 in Kontakt zu treten. Bei der hier gezeigten Ausführungsform ist das Führungselement 30 an seinen beiden Enden - bezogen auf die Transportstrecke - in der Nähe des Zuführbereichs 40 und in der Nähe des Abstapelbereichs 42 befestigt.The
Die Vorrichtung 10 funktioniert dabei wie folgt. Ein Produkt bzw. ein Teil 12 wird über den Zuführbereich 40 auf das Transportband 20 überführt und dort durch einen Unterdruck an den Öffnungen 26 festgehalten. Mittels einer nicht gezeigten Justiereinrichtung kann die Position des Teils 12 relativ zum Transportband 20 eingestellt werden. Das Teil 12 bewegt sich dann entlang der Transportrichtung 22 zur Druckstation 18, wo es bedruckt wird. Das Bedrucken erfolgt besonders präzise ― auch bei hohem Durchsatz ―, da das Transportband 20 durch das seitliche Führungselement 30 federnd gestützt wird. Nachdem das Teil 12 bedruckt ist, gelangt es zum Abstapelbereich 42 und wird dort in ein Magazin 70 (siehe
Ferner ist in der Figur zusätzlich zum ersten Federelement 36 auch ein zweites Federelement 58 gezeigt, das auf die Platte 54 des Führungselements 30 einwirkt, um das Führungselement 30 schräg anzustellen. Dies wird noch in einer nachfolgenden Figur näher verdeutlicht.Further, in the figure, in addition to the
Mit seiner anderen Seite, also der Seite des Transportbands 20, die dem Anlagebereich 32 gegenüberliegt, stützt sich das Transportband 20 an einem zweiten, starren Rahmenelement 58 ab. Damit ist das Förderband 20 zwischen der Platte 54 und dem zweiten Rahmenelement 60 festgelegt, kann jedoch aufgrund der nachgiebigen Federung an der Platte 54 im gewissen Rahmen noch Bewegungen in Seitenrichtung 34 machen.With its other side, that is to say the side of the
Schließlich ist in der Figur angedeutet, dass das Transportband 20 als Zahnriemen mit einer Bogenverzahnung 62 ausgestaltet ist. Da sich die Bogenverzahnung 62 an der Unterseite des Transportbands 20 befindet, ist die Bogenverzahnung 62 mittels gestrichelter Linien dargestellt.Finally, it is indicated in the figure that the
Betrachtet man die Schwenkachse 62 als Bezugspunkt, so kann man gedanklich einen ersten Hebelarm 64 und einen zweiten Hebelarm 66 definieren. Dabei liegt das erste Federelement 36 am ersten Hebelarm 64 an, so dass der erste Hebelarm 64 zumindest mit einem Abschnitt am Transportband 20 anliegt. Das zweite Federelement 58 drückt entgegen der Anpressrichtung 38 gegen den zweiten Hebelarm 66. Da das zweite Federelement 66 weiter vom Transportband 20 entfernt ist (bezogen auf die Z-Richtung) als das erste Federelement 36 bzw. da der Angriffspunkt des zweiten Federelements 58 am zweiten Hebelarm 66 weiter vom Transportband 20 entfernt ist als der Angriffspunkt des ersten Federelements 36 am ersten Hebelarm 64, entsteht eine resultierende Kraft, die verhindert, dass sich das Transportband 20 vom Trägeraufbau 24 abhebt.Considering the
In dieser Schnittdarstellung ist gut zu erkennen, dass der Trägeraufbau 24 mindestens eine Saugkammer 68 und mindestens ein Anschlussstück 69 aufweist, wobei gemäß der zuvor gezeigten Darstellungen zumindest mehrere Anschlussstücke 69 vorhanden sind, in denen der Hohlraum 28 ausgebildet ist.In this sectional view, it can be clearly seen that the
Zum Abstapeln werden die Produkte bzw. Teile 12 durch zwei entgegengesetzt laufende Förderriemen 78, 80 hindurchgeführt und in das Magazin 70 abgestapelt. Der Antriebsriemen 78 läuft um eine erste Rolle 78' und eine zweite Rolle 78"; der zweite Antriebsriemen läuft um eine erste Rolle 80' und eine zweite Rolle 80".For destacking the products or
Die Ebene 90, in der das Endlosantriebsband 84 verläuft, hier die Zeichenebene, also die XY-Ebene, ist zumindest in etwa senkrecht zur Schwerkraftrichtung, d.h. zur negativen Z-Richtung (-Z).The
Die Funktionsweise der Vorrichtung ist wie folgt. Von der Transportvorrichtung werden fortlaufend Teile 12 am Abwurfbereich 88 der Transportvorrichtung 14 abgestapelt. Es steht dort eins von mehreren Magazinen 70 bereit, um die Teile 12 aufzunehmen. Ist das Magazin 70 gefüllt, verlagert sich der Endlosantrieb 84 in Richtung der Antriebsrichtung 86, so dass sich dann das nächste leere Magazin 70 unterhalb des Abwurfbereichs 88 befindet.The operation of the device is as follows. The transport device continuously
Während des Betriebs, d.h. ohne den Verarbeitungsprozess anhalten zu müssen, kann ein volles Magazin 70" aus der Magazinaufnahme 82" entnommen werden und bequem der Weiterverarbeitung zugeführt werden. Erst zu einem späteren Zeitpunkt muss dann wieder ein leeres Magazin 70' in die Magazinaufnahme 82' eingehängt werden, damit für den Verarbeitungsprozess stets ein leeres Magazin 70 zur Verfügung steht. In Abhängigkeit von der Länge des Endlosantriebs 84 und von der Anzahl der verwendeten Magazine 70 kann so auf einfache Weise ein variabler Puffer erzeugt werden, dessen Kapazität zudem durch Hinzufügen bzw. durch Entfernen von Magazinen 70 vergrößert und verkleinert werden kann.During operation, i. Without having to stop the processing process, a
Schließlich wird in
Damit wurde insgesamt eine verbesserte Transportvorrichtung aufgezeigt, die eine gleichmäßigere Bewegung des Transportbands ermöglicht. Zudem wurde eine neuartige Magaziniervorrichtung aufgezeigt, die einen besonders vorteilhaften Verarbeitungsprozess ermöglicht, insbesondere ohne dass nach einer erfolgten Verlagerung von Magazinen eine Pause für eine erforderliche Rückwärtsbewegung in einer Ausgangsposition erforderlich ist.Thus, an improved transport device was shown overall, which allows a more uniform movement of the conveyor belt. In addition, a novel Magaziniervorrichtung has been shown, which allows a particularly advantageous processing process, in particular without that after a successful relocation of magazines a break for a required backward movement in a starting position is required.
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009052736A DE102009052736A1 (en) | 2009-11-12 | 2009-11-12 | Transport device for conveying flat parts and device for printing flat parts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2322352A1 true EP2322352A1 (en) | 2011-05-18 |
EP2322352B1 EP2322352B1 (en) | 2013-03-27 |
Family
ID=43598148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10191096A Active EP2322352B1 (en) | 2009-11-12 | 2010-11-12 | Transport device for conveying flat parts and device for printing flat parts |
Country Status (2)
Country | Link |
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EP (1) | EP2322352B1 (en) |
DE (1) | DE102009052736A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113211951A (en) * | 2021-04-15 | 2021-08-06 | 南通东川数码科技有限公司 | Circulation operation device of printing machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6141525A (en) * | 1995-04-28 | 2000-10-31 | Canon Kabushiki Kaisha | Image forming apparatus having correction device for lateral misalignment |
DE102006052302A1 (en) * | 2006-11-03 | 2008-05-08 | Atlantic Zeiser Gmbh | Apparatus for printing on flat parts, in particular of plastic cards |
-
2009
- 2009-11-12 DE DE102009052736A patent/DE102009052736A1/en not_active Withdrawn
-
2010
- 2010-11-12 EP EP10191096A patent/EP2322352B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6141525A (en) * | 1995-04-28 | 2000-10-31 | Canon Kabushiki Kaisha | Image forming apparatus having correction device for lateral misalignment |
DE102006052302A1 (en) * | 2006-11-03 | 2008-05-08 | Atlantic Zeiser Gmbh | Apparatus for printing on flat parts, in particular of plastic cards |
WO2008055466A1 (en) | 2006-11-03 | 2008-05-15 | Atlantic Zeiser Gmbh | Device for printing two-dimensional parts, particularly plastic cards |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113211951A (en) * | 2021-04-15 | 2021-08-06 | 南通东川数码科技有限公司 | Circulation operation device of printing machine |
Also Published As
Publication number | Publication date |
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EP2322352B1 (en) | 2013-03-27 |
DE102009052736A1 (en) | 2011-05-19 |
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