FR2562476A1 - Sealing stylus points of automatic plotter or drawing unit - Google Patents

Abstract

The method is intended for sealing the stylus point (18) of an automatic plotter (01), comprising at least one plotter head (07), at least one stylus, a seal (31) for each stylus and a seal storage station (42). Any stylus not in use has an air-tight closure seal, the seal(s) for the stylus to be activated having been moved into the station and held therein during stylus operation. After stylus operation, the stylus is re-sealed and then returned to its rest position. The change-over of the seals, or where applicable, the seal carriers, before and/or after the operation of each stylus is effected automatically.

Description

 The invention relates to a method for closing the writing tip (s) of automatically operating writing, drawing or recording installations, in particular of digitally controlled drawing installations (plotters) which comprise at least one housing, at least one writing point and a seal for each writing point as well as a deposit station, and it also relates to devices for implementing the method.

 Devices and methods of this kind are known inter alia from DE-A 31 44 057 and US Patent 2,717,820. Here, a single writing tip is maintained, with a writing cartridge, in a housing and moved during the work phase above the work surface according to a prescribed program (according to the first cited document) or in accordance with detected recording values (according to the second cited document). Other writing cartridges are kept in a spite station placed at the edge of the work surface and if necessary they are brought from this station, automatically with command by program (according to the first document cited) or mechanically and possibly manually ( according to the second cited document) to replace the writing cartridge each time used. The other unused writing cartridges are closed, during storage at the depot, each with a seal attached to each cartridge and arranged fixedly at the deposit station (according to the first document cited) or are again filled with writing agent via a reservoir of writing agent similar to a seal (according to the second document cited).

 From patent DE 29 13 690, DE-A 32 47 460, patent DE 31 10 623 and patent DE 32 26 455, installations are known in which a single usable writing tip is also contained, with a cartridge writing, in the corresponding housing head, while other writing cartridges are kept ready in depositing stations. When it is desired to change the writing cartridge, the passage to the respective positions making it possible to remove the writing cartridge each time used and to receive the one which must be used then takes place automatically and the writing cartridges are changed. from the cartridge to the housing head and / or to the deposition station is carried out each time mechanically in the third and fourth documents cited, by means of ratchet or stop-nose systems which lock and unlock each other, or in the fifth and sixth documents cited, by means of permanent magnetic elements, ie magnetic couplings which are formed from ferromagnetic materials and permanent magnets.

 All these known devices and methods are only suitable for writing tips which have a clean and independent system for supplying writing agent and which are generally placed on detachable writing cartridges. Er. in particular, tube writing tips, which are suitable for high operating speeds and which must be connected to writing agent supply systems integrated into a machine, cannot be used purely and simply in these facilities. Here, additional couplings and complicated connections would still have to be made first for the supply of writing agent or for the supply of compressed air and / or vacuum to the supply of controlled writing agent. By pressure or vacuum. In addition, these devices are generally not suitable for output or operation with several writing tips.

To this end, a significant additional expense would be required for device components, control functions and program steps.

 Another disadvantage of the known devices lies in the fact that the retaining elements of the housing head, relatively unstable by virtue of the change system each time used, often do not provide firm retention of the writing tip each time used. nor of the writing cartridge to be used and, in particular, do not ensure an always similar and exactly fixed position of the writing tip and / or the writing cartridge in the housing head. As a result, more often than not, these installations cannot be used for very rapid processes and frequent change of position. In addition, the seals - insofar as they only exist - (for example according to the first cited document) cannot be replaced without difficulty when they are heavily fouled, damaged or destroyed.

 DE-B 27 50 937 discloses, on the other hand, an installation and a method making it possible to have, with safe retention and always uniform and exact fixing, several writing tips with tubes in a single housing head, according to which the writing cartridges can also optionally be connected to machine-specific writing agent supply systems, and, in addition, have a joint support attached to each writing tip, which can be actuated mechanically and each time provided with a seal.

 In addition to a significant additional expenditure of circuit, control and program elements, it is also necessary, for a construction of this kind, to choose a construction form larger than that of a usual housing head otherwise. As a result, the overall size as well as the weight of the parts to be moved, as a whole, are increased appreciably, so that the wear becomes greater and the possible operating speed must be kept smaller. The use of a relatively small and light seal assembly which consists of a seal and possibly a simple seal holder is also not possible here, due to the necessary mechanical switching elements.

 Consequently, the invention aims to provide a procedure and devices for implementing this method, with which it is possible, in a simple manner, to close and open surely the writing tip or the cartridge. writing each time used, during automatic operation, in particular to eliminate the drawbacks mentioned and to allow the use of writing tips and / or writing cartridges with different writing agent supply systems, and also for hermetically closing the writing tip (s) in the rest position and being able to execute the housing head as small and as light as possible, with, at the same time, secure retention in the correct position of the writing tip Each time it is used, it is also a question of ensuring a quick and simple change of the seals if necessary and possibly also of allowing the simultaneous use of several writing tips or several writing cartridges.

 This problem is solved according to the invention, as to the method, by the fact that each writing tip disposed in the housing head is kept hermetically closed in the rest position by a seal, that the seal of the writing tip is use is transported, before assuming the operating position, to the filing station and is kept there during the operating phase, that the seal of the writing tip used, kept at the filing station, is again connected to the tip writing after the operating phase and before occupying the rest position, and that each change of position of the joint (s) or of the joint support (s) that may be provided takes place automatically before and / or after the operating phase of the writing tip each time used. As for the device, the problem is solved by the fact that each writing tip is provided with a special detachable seal and that each seal has retaining means for the connection o u automatic separation between writing tip and seal and / or cooperates with such retaining means.

Other arrangements and preferential modes of execution are indicated below.

According to the invention, in an installation as it is known,
for example, by the first document cited, it is necessary that each writing tip disposed in the housing head is kept hermetically closed in the rest position by a seal, while the seal of the writing tip to be used (or precisely used) is transported, before taking the operating position, to the depot, is stored there during the operating phase and, after the operating phase, before the writing tip used takes the retaining position, is again connected to it, for an equally hermetic closure. It is necessary here that the change of position of the seal (s) or the seal support (s) connected to these, before and / or after the operating phase of the writing tip each time used, takes place automatically.

 Thus, in the course of the process according to the invention, first of all, the writing, drawing or recording installation being out of action, that is to say in the rest position, all the points writing or writing cartridges contained in the log head: each are closed with a special seal. In this position, the housing head can be arranged so that all the seals and / or their seal supports rest on the work surface or on another support integral with the machine, so that even in the event of a stop extended the machine, a hermetic closing of the writing points is ensured, even without particular holding forces, mechanical or magnetic, and even without need of current.

 By rest position is meant in this case the situation in which, the installation being also ready to operate, the writing tips contained in the housing head are axially spaced from the working surface and are provided with 'a seal to close them tightly. To make a writing tip ready to use ready for operation, it is automatically moved, with the entire working head, to the filing station. At the depot, the seal is removed. From this moment, this writing tip is ready to operate. After the seal has been separated and lowered onto the work surface in the operating position, automatic reproduction of writing, drawing with digital control or automatic recording of data or values to be detected may occur. carry out. At the end of the operating phase, in particular during the operating break and when there is reason to change the writing point to be used, the writing point which comes from the be used, it is coupled to the joint or joint support and it is brought to the rest position, that is to say to a position axially spaced from the work surface. filing a new writing tip that is needed, it is zero-rated from the seal, it is brought back to the operating position, that is to say in contact with the recording medium placed on the work surface and it is moved in accordance with the program or task, as part of the operating phase.

 Thanks to this process, it is easy to achieve that the writing agent of the writing tips which are each time in rest position does not dry, due to prolonged r-on use.

 According to a development of this process, all the control and / or maneuver orders for the considered position change of the writing point each time used as well as of its joint, particularly for] eur brought to the deposit station and their withdrawal of this position and to the extent necessary - also for possible coupling and uncoupling can be given by a predetermined program. This program can be in the form of a basic program or specific framework of the installation or be controlled by processor and be added regularly to all operating programs or it can be incorporated into the operating program, for example so that the necessary control signals are located directly or indirectly before and / or after those relating to the change of writing tips or writing cartridges (in case of different line thickness or color change).

 Depending on the overall construction and the equipment of the installation, it may be advantageous for the delivery to the depot to be done in the same direction each time and the withdrawal, in opposite directions, but advantageously, the directions of supply and withdrawal of the writing tip to be used, with seal - therefore when changing from the rest position to that of operation - differ from the directions of supply and withdrawal of the writing tip which has just been used (without seal), therefore when switching from the operating position to that of rest.

The two directions can, for example, make an angle of 90 between them. As a result, more often than not, we can make better use of the existing work surface and reach and leave the depot with numerous monk lines and signals, but always similar and harmonized. When a cleaning element is placed inside the work surface or at the deposit station, thanks to the always equal feed paths, this advantage is obtained that this cleaning element can be relatively small and placed optimally.

The same is true for cleaning winds which are directly attached to the joint or the joint support.

 The coupling and uncoupling between the joint in question or the corresponding Joint support and the writing tip, or the housing head and / or the deposit station, must be able to be carried out automatically or necessarily in an appropriate position, mEcani - only or with control by processor and / or by program and mechanical, magnetic or pneumatic means or elements must ensure both the connection between the parts and their uncoupling and detachment.

Details, advantageous developments and preferred embodiments of different devices for implementing the method are set out below by way of example and described more precisely with reference to the drawings, in which
FIG. 1 shows a first embodiment of a table installation as an XY tracer
Figure 2 shows another table installation as a flatbed plotter
Figure 3 shows a housing head with several writing cartridges
FIG. 4 represents an installer of a drum plotter
Figure 5 shows a housing head with seal and seal support
Figure 6 shows a mechanical deposition station with seal support
Figure 7 is a plan view of the housing head according to Figure 5
Figure 8 shows a variant of seal support with seal and adherent magnet
Figure 9 shows a seal holder with seal and writing point sealed
FIG. 10 shows another housing head with seal support and a corresponding deposit station
Figure 11 is a plan view of the deposition station according to Figure 10
FIG. 12 shows another housing head with seal support and magnetic deposition station
Figure 13 shows another embodiment of housing head and electromagnetic deposition station
FIG. 14 shows another electromagnetic deposition station, and
FIG. 15 shows a pneumatic deposition station.

 the table installation 01 represented by FIG. 1 is usually called xy plotter or chart plotter and essentially consists of a work surface 03 delimited by a frame 13 and a guide slide 05 movable in the direction x, on which a housing head 07 movable in the y direction is guided. On the frame 13 is disposed, outside the working surface 03, a deposition station 41 which has a deposition support 43, in which is the unused seal support 21 with the seal 31. Another seal support 21 ' is connected to the writing cartridge 12 retained in the rest position in the housing head 07, while the additional writing cartridge i1 is located inside the housing head 07, in the operating position. the recordings are finished, the housing head 07 moves in the x direction or the z direction perpendicular to the axis of the joint 31, in the direction of the latter, in the raised position. Then, by means of the retaining means provided, contact is made by embedding or under the action of a force between the seal support 2i and the writing cartridge 11, so that when leaving the deposit 41, the seal 31, the writing tip 18, the seal support 21 and the writing cartridge 11 remain connected.

 FIG. 2 shows another table installation 01, generally called a tracer with a flat bench, the working surface 03 of which covers a base plate 14. In guide grooves 15 is disposed, movably in direction A, a slide guide 05 on which can slide in direction D the housing head 07 which is equipped with four writing cartridges 11, 12. The writing cartridges 12 which are in the rest position are closed by seals arranged in permanent magnetic seal supports 23 ′, while the seal 31 and its seal support 23 are kept at the deposition station 42, since the writing tip 18 of the writing cartridge 11 is in the operating position.

 The deposition station 42 is provided with a deposition support 44 which has a cleaning element 61. To change the positions of the seals 31, 32 or the seal supports 23, 23 ′, the guide slide 05 - the tip d writing 11 being lifted - moves in direction A on the extended center line - parallel to this direction - of the depot station 42 or of the joint 31 which is retained there, in the direction thereof.

The writing tip 18 passes in contact with the wiping element of the cleaning element 61 and scrapes the remains of writing agent, and the like, which may exist. When the axes of the writing tip 18 and of the seal 31 are aligned, the connection between the contact parts is established and sealing is ensured, by vertical movement of the writing cartridge 11 and / or of the support. deposit 44 and possibly by electrical pulses (in the case of an electromagnetic coupling). The housing head 07 is then removed from the deposition station 42 in the direction D, inter alia because in this way the cleaning element 61 is not damaged by the seal support 23. prepare another writing tip for operation, the sliding of the housing head 07 in direction D takes place only over the corresponding distance which separates the writing tips used and to be used 18, 19.

 According to FIG. 3, in a housing head 09 are axially movably disposed several writing cartridges 10 which are supplied with writing agent by means of flexible pipes with writing agent 16 and pressure pipes 17, from writing agent containers 26, via pressure connections 27 provided on the machine.

 In FIG. 4, a drum plotter installation 02 can be seen on the support roller 28. From which a sheet wound on two sides serves as recording medium 99. The housing head 08 is here in the form of a plate and contains a single writing cartridge 11, the writing tip 18 of which is in the operating position.

 In a deposition station 41 disposed next to the support roller 28 whose generator located at the top forms here the working surface 04, the seal 31 is kept in the deposition support 43. The recording 38 is carried out by the point writing 18 according to the program interpreted and transmitted by the control unit 39 and which is on the program support, and by which are also given the change orders for clearing or closing the writing points 18, 19.

 In the case of the housing head 09 according to FIG. 5, a writing cartridge 12 is movably mounted axially in a guide sleeve 60 and its writing tip 19 is closed by a seal 32. The seal 32 is disposed in a seal holder 25 which further has a cleaning element 61 and is fixed to a seal holder 21. The seal holder 21 is fixed to the housing head 09 by means of a cartridge holder 51 provided with coupling bevels 59 and a pressure caliper 53 which cooperates with a pressure pin 54, as well as by clamping calipers 52.

 As indicated in FIG. 6, a mechanical deposition station 40 can be coupled to a seal support 21, by deposition supports 45, in the same way as the seal support 21 at the housing head (for example 09 according to Figure 5). At the deposition station 40 is attached in a fixed position an unlocking bar 55, by the unlocking bevels 56 is carried out the alternative release of the pressure caliper 53. In the seal support 21 is, in addition, arranged an opening coupling 58 as well as a coupling spring 57, to harmonize between them, in cooperation with the cartridge holder 51, the horizontal and vertical sliding movements and to ensure that during the horizontal movement of contact, a vertical movement of closing is compulsory, only when the seal 31 and the writing tip 18, 19 are correctly arranged one above the other.

 Figure 7, which is a plan of the housing head 09 according to Figure 5, illustrates again the cooperation of the different elements.

The seal support 21 is retained by the clamping caliper 52, making it spring radially, while the pressure caliper 53, by means of the pressure pin 54, acts on the writing cartridge 12 mounted vertically movable in the guide sleeve 60, so that there is a tension under an elastic action between the seal 32 - not visible here - and the writing cartridge 12.

The unlocking bars 55 indicated in phantom slip slide, during coupling or upon arrival at the deposition station 40, passing through the unlocking bevels 56, under the pressure pin 54, so that the cartridge d writing 12 and with it the writing point 19 move vertically upwards, against the action of the pressure yoke 53, so that no horizontal transverse force can act between the writing point 19 and the seal 32 when the deposition support 45 retains the seal support 21 and the housing head 09 moves away, without seal, from the deposition station to assume the starting position for the start of the operating phase or vice versa, during the connection of the two parts 09 and 21, after the end of the operating phase.

 According to FIG. 8, the seal support 23 is formed by a cup disc which contains in its center the seal 30 and, in a filling 29, an additional seal 33. This additional seal 33 is applied hermetically on the side front against the writing cartridge 12 or against the housing head 09, while the seal 30 acts on the writing tip 19 or the envelope when it is made of a very soft sealing material and the tip 19 enters it.

A seal support 23 of this kind can advantageously be formed of ferromagnetic material or be in the form of a permanent magnet or have a magnetically insulating filling 29 in which is placed, instead of the additional seal 33, an intermediate piece of ferromagnetic material or a permanent magnet. Depending on the way in which the connection and coupling systems of the housing head 07, 08, 09, the writing cartridge 18, 19 and / or the filing station 40, 41, 42 are arranged and the manner in which switching or commands are carried out, the most advantageous solution can be chosen.

 The seal support 20 according to FIG. 9 contains an annular seal 32 which hermetically encloses the tip of the writing cartridge 12, while the writing tip 19 rests, in the protected state, in a recess 34. The application of the seal support 20 to the cartridge 12 is carried out on the front side by a contact surface 35 and / or by the flat face 36 on the bottom surface 65 of the housing head 09.

 FIGS. 10 and 11 show a housing head 09, a seal support 22 and a deposition station 42 disposed in a recessed manner in the working surface 03 and including the deposition support 44, as well as the housing head 09, has one or more claws as retaining means 50 acting alternately. The pressure yoke 53 acts on the writing cartridge 12 so that the writing tip 19 is pushed against the seal 32, while the seal support is retained by the claw (s) 50 disposed on the housing head 09.

The alternative connection with the depositing support 44 is here ensured by the fact that the latter is moved vertically by the lifting magnet 66 above the working surface 03 (here upwards) and that in a known manner, by means of suitable sliding bevels or other construction measures, the claws which hold the seal support 22 open each time and the other claws or pairs of claws are closed. When the seal support 22 is received after the operating phase, this process takes place in the opposite direction. By blocking supports 46 arranged on the deposition support 44 or on the housing head 09 and possibly acting by friction, the secure retention and the centered fixing of the seal support 22 or the seal 32 can be further improved.

 FIG. 12 shows a housing head 09, a deposition station 42 and a seal support 20 with a seal 32. The deposition station 42 has a deposition support 44 and a blocking support 46 which protrudes from the surface of work 03 or is completely embedded there.

The deposition support 44 can here be designed in the form of an electromagnet (strong) and the seal support 20 in the form of a permanent magnet (weak). The transfer of the seal support 20 from the housing head 09 to the deposition station 42 is ensured by the fact that when the position is suitable, that is to say when the seal support 20 is disposed in a centered manner. above the deposition support 44 or above the blocking support 46, the electromagnet is switched on, its axial traction forces being greater than the axial retention forces of the permanent magnetic seal support 20. Conversely, the transfer from the deposition station 42 to the housing head 09 is ensured by the fact that, when the electromagnetic deposition support 44 is off and the radial force retaining the blocking support 46 is weak, the permanent magnet of the seal support 20 adheres to and retains the bottom metal surface 65 of the housing head 09.

 FIG. 13 shows a deposition station 42 which has both an electromagnetic deposition support 44 for the seal supports 23 equipped with permanent magnetic retaining means 50 and an electromagnetic lifting device 67 for ejecting the support from the deposition station 42 seal 23 with seal 31. The writing tip 18, ready to operate, of the precisely usable writing cartridge 11, is, in known manner, axially movable in the housing head 09, while another writing cartridge 12 is in the rest position, its writing point 19 being closed by a seal 32 which is fixed in the seal support 23 and is pushed against the guide sleeve 60 and held against it by permanent magnetic retaining means 50.

 In the direction of entry and exit A of the writing tip 18 without seal 31 there is a replaceable cleaning element 61 formed of bristles, felt, foam material or the like, on which the agent residues writing, dust or other impurities which are on the writing point 18 are scraped when the latter passes over and touches it while arriving at the deposit station 42 and leaving it.

 The deposition station 4Q according to FIG. 14 is also provided with an electrical lifting device 67 and an electromagnetic deposition support 44 and has, between, a control device 64 cooperating with a contact ring 69 disposed on the rod lifting 68 and which checks the correct height or vertical position of the depositing support 44. Another control device 63 checks whether the depositing station is occupied or empty. It is immediately located in the region of the housing zone intended for the seal support 24 which here also has an electromagnetic retention system and retains the seal 31 in the center. The writing tip 18 of the writing cartridge disposed in the housing head 09 is at a phase between the rest and working positions, that is to say that, on the one hand, it does not is not yet closed but that, on the other hand, it no longer touches the recording medium 99 nor the work surface 03.

 In the case of the deposition station 42 according to FIG. 15, a pneumatic pressure system 47 is used to receive and eject the seal support 20 with the seal 32 and a vacuum system 48 to close the writing tip 19. By suction channels 49, the seal support 20 is retained in the deposit support 44 or on the housing head 09.

 Around the depositing station 42 is disposed a closed cleaning ring 62 * so that it is possible to clean the writing tip 19 as it passes from any direction.

Consequently, entry to depot 42 and exit need not always be in the same direction.

 If necessary, within the framework of the invention, to the extent that this is permitted by the system and with a structural adaptation, the embodiments shown can be mixed at will or supplement them otherwise or reduce them.

 By automatic change of position and automatic actuation is meant any non-manual function sequence and any mechanical change in the position or arrangement of an element of the installation, regardless of whether these changes are carried out mechanically, controlled by program, or provided by electrical circuits.

 In the case of installations which are intended or suitable for the simultaneous use of several writing points, a deposit station provided with several deposit supports can be provided, or several deposit stations are provided provided with a support deposit. For this purpose, orders can be made jointly for all writing tips (in the case of equal lateral spacing between the different writing tips and between the filing stations or filing supports), or individually one after the other, automatically, in the same way as when using a single writing tip.

Claims (23)

 1) Method for closing the writing tip (s) of writing, drawing or recording installations operating automatically, in particular of digitally controlled drawing installations (plotters) which comprise at least one housing head, at the at least one writing point and a seal for each writing point as well as a deposit station, characterized in that each writing point (13, 19) available in the housing head (07, 08, 09 ) is kept hermetically closed in the rest position by a seal (30, 31, 32), in that the seal (31) of the writing tip to be used (18) is transported, before assuming the operating position, at the depot station (40, 41, 42) and is kept there during the operating phase, in that the seal (31) of the writing tip used (18), kept at the depot station (40, 41, 42), is again connected to the writing tip (18) after the operating phase and before occupying the rest position, and in this that each change of position of the point (s) (30, 31, 32) or of the seal support (s) (20 to 24) possibly provided takes place automatically before and / or after the phase of operation of the writing tip (18) each time used.  2) Method according to claim 1, characterized in that the supply to the deposition station (40, 41, 42), ensuring each change of position of the seal (30, 31, 32) of the writing tip used (18 ), and possibly also its uncoupling or its coupling, are carried out by a predetermined program.  3) Method according to any one of claims 1 and 2, characterized in that the supply to the depot station (40, 41, 42) is carried out automatically each time, by virtue of a basic or framework program specific to the installation or under the control of a processor.  4) Method according to any one of claims 1 and 2, characterized in that the supply to the depot station (40, 41, 42) is effected by virtue of the work program in question, the signals of corresponding command immediately preceding or following the line width or color change signals.  5) Method according to any one of claims 1 to 4, characterized in that the arrival at the depot station (40, 41, 42) is always carried out in the same direction and the exit in the opposite direction, and in this that the direction of arrival and departure (D) with joint (30, 31, 32) is different from the direction of arrival and departure (A) without joint (30, 31, 32).  6) Method according to any one of claims 1 to 5, charac terized in that the coupling or uncoupling of the joint considered (30, 31, 32) or the corresponding joint support (20, 21, 22, 23, 24) and the writing tip (18, 19) or the housing head (07, 08, 09) and / or the filing support (43, 44, 45) are carried out automatically or necessarily, mechanically or under the control of a processor and / or a program.  7) Method according to any one of claims 1 to 6, characterized in that the coupling or uncoupling as well as the retention of the seal (30, 31, 32) or of the seal support (20, 21, 22, 23 , 24) on the writing tip in question (18, 19) in the housing head (07, o8, 09) and / or at the deposition station (40, 41, 42) or at the deposition support (43, 44 , 45) are performed mechanically, magnetically or pneumatically.  8) Method according to any one of claims 1 to 7, characterized in that the rest position of all writing tips (18, 19) or in the rest position of the entire installation (01, 02) , the seals (30, 31, 32) and / or the seal supports (20 to 24) are brought into contact with the working surface (03, 04) or with another support integral with the machine.  9) Device for closing the writing point (s) of writing, drawing or recording installations operating automatically, which have at least one writing point and a seal for each writing point as well as a deposit station, for implementing the method according to one of claims 1 to 8, characterized in that each writing tip (18, 19) is provided with a special detachable seal (30, 31, 32 ), and in that each joint (30, 31, 32) has retaining means (50 to 59) for the connection or automatic separation between writing tip (18, 19) and joint (30, 31, 32 ) and / or cooperate with such retaining means (50 to 59).  10) Device according to claim 9, characterized in that each seal (30, 31, 32) is disposed in or on a seal support (20 to 24), and in that each writing tip (18, 19) , or the housing head (07, 08, 09) as well as the deposition station (40, 41, 42) or the deposition support (43, 44, 45) have retaining means (50 to 59) with which both mutual fixing and complete alternative separation of the writing tip (18, 19) and the seal (30,  31, 32) can be done automatically.  11) Device according to any one of claims 9 and  10, characterized in that it has several writing tips (18,  (08, 09), and in that the seal (31) of the writing tip (18) each time used is kept in a deposition station (40, 41, 42).  to the corresponding writing tip (18, 19) or to the housing head  each joint (30, 31, 32) is fixed in a completely detachable manner  19) for alternate use, possibly for different line widths and / or different colors, in that all of the writing tips (18, 19) are arranged in the housing head (07, 08, 09), that the writing points (19), in the rest position, are each hermetically closed by a seal (30, 31, 32), in that  12) Device according to any one of claims 9 to 11, characterized in that each writing tip (18, 19) is added a writing cartridge (10, 11, 12).  13) Device according to claim 12, characterized in that each writing cartridge (10, 11, 12) is arranged in the head ode housing (07, 08, 09) detachably and / or axially movable.  14) Device according to any one of claims 9 to 13, characterized in that the seal (30, 31, 32) or the seal support  considered (21 to 24), the writing tips (18, 19), the housing head (07, 08, 09) and / or the deposit station (40, 41, 42) or the support  deposit (43, 44, 45) have mechanical, magnetic or pneumatic retaining means (50 to 59, 21 to 25, 43 to 46) for fixing  or alternatively complete separation and / or cooperate with such means.  15) Device according to claim 14, characterized in that  the mechanical retaining means (50 to 59, 21, 22, 43, 45 and 46) present  try claws and / or friction elements and / or cooperate with  such elements.  16) Device according to claim 14, characterized in that  the magnetic retaining means (23, 24) are provided with electromagnets  and / or cooperate with electromagnets.  17) Device according to claim 14, characterized in that  the pneumatic restraint contains a pressure system  and / or vacuum and / or cooperate with such a system.  18) Device according to any one of claims 9 to 17, characterized in that the depositing station (40, 41) is arranged outside or at the edge of the working surface (03, 04) of the installation writing, drawing or recording (01, 02).  19) Device according to any one of claims 9 to 17, characterized in that the depositing station (42) is arranged inside the working surface (03, 04) and embedded in it.  20) Device according to claim 19, characterized in that the deposition station (42) is embedded so deep in the working surface (03, 04) that the seal (30, 31, 32) which is housed there, with the joint support (22, 23, 24), does not exceed the upper edge of the work surface (03, 04) or the horizontal work plane.  21) Device according to any one of claims 9 to 20, characterized in that it has a cleaning element (61, 62) which is preferably designed as an inserted cleaning element (61) or d 'cleaning ring (62).  22) Device according to claim 21, characterized in that the cleaning element (61, 62) is arranged on the seal (30, 31, 32), on the seal support (20 to 24) or on the support of seal (25) at the deposit station (0, 41, 42) or on the deposit support (43, 44, 45) or on or in the work surface (03, 04), preferably! in the vicinity of the depot (40, 41, 42).  23) Device according to any one of claims 9 to 22, characterized in that it has at least one control device (63, 64).