DE3423309A1 - Work head for labelling workpieces - Google Patents

Abstract

A work head (11) for labelling workpieces (12) is described, in which a character (13) has to be written by an activatable tool (23) by relative movement between the work head (11) and the workpiece (12). In order to be able to carry out the labelling of the workpieces (12) with a plurality of characters (13) considerably more quickly and, in doing so, not to have to multiply correspondingly either the control expenditure or the constructional expenditure in terms of tools (23), the work head (11) is provided with a plurality of tools (23) which are arranged at a fixed distance from one another and can be activated individually and independently of one another. In this case, the relative movement between the work head (11) and the workpiece (12) is determined by the 7-segment illustration of the character to be written. <IMAGE>

Description

description

The present invention relates to a working head for marking workpieces the preamble of claim 1.

Such a working head known from DE-OS 32 21 9 80 has a single tool, either in the form of an electrochemical or pyrographic Tool, a roller ball or color pen, a milling or engraving spindle, a vibrator or the like. Which tool for labeling all characters that should appear on the workpiece, serves. In other words, this one tool does all of the labeling, i.e. it has to precise preprogrammed control of the paths corresponding to the shape of the characters and those between the characters existing spaces. On the one hand, this is relatively complex in terms of control technology and on the other hand, depending on the number of characters to be applied, quite time-consuming, since each individual character must be traversed with this one tool.

From DE-PS 27 2 8 256 is a working head for the electrochemical labeling of a metallic

Known surface, in which a single tool is also provided, but the individual one Has character elements that can be activated optionally, so that the individual characters in a multi-segment display given are. With this working head, every single character does not have to be traversed, but it can also be used with this only one character at a time can be written, which also means that the lettering of a workpiece with a large number of characters is quite time-consuming.

The object of the present invention is to provide a working head for marking workpieces To create the type mentioned at the beginning, with which the labeling of the workpieces with several characters can be done much faster, with neither the control effort nor the constructive The effort in terms of the tools is correspondingly multiplied.

This task is carried out with a work head for labeling workpieces of the type mentioned the features specified in the characterizing part of claim 1 solved.

With the. It is the working head according to the invention possible in one operation, i.e. a large number of characters on one workpiece at the same time to be applied, the characters in a multi-segment representation are given, for example in the 7-segment arrangement or in the 5 by 7-segment arrangement. The relative movement between the tools on the one hand and the workpiece on the other takes place along the specified path sections of the relevant segment arrangement, whereby the individual tools can optionally be activated independently of one another in terms of time, so that during this one work or labeling process of the individual tools different characters can be written. This means that in the case of a workpiece, all of the information to be applied a labeling process is applied in ilipsfim can be. Compared to the prior art mentioned first, there is the further advantage that a -0 on the one hand through the multi-segment display and on the other hand because of the empty spaces that are not necessary here between two consecutive characters of the Control effort has not increased or at least not increased significantly. Compared to the second

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mentioned prior art results in the
Advantage that the design effort with respect to
the tools do not change according to the number
that has multiplied the characters to be written,
because the individual tools only consist of one
consist of a single element.

In the preferred exemplary embodiments of the present invention, the tools can be used in both be arranged in several rows as well as in several columns.

According to a preferred embodiment of the present invention, the 7-segment display of characters used, the activation of each

Tools are controlled according to the characters to be written during the corresponding to the individual segments Movement section optionally takes place. This has a considerable influence on the speed the lettering, as the 7-Segrnente can be traced back to the starting point very quickly Way can be done.

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The relative movement between the tools on the one hand and the workpiece, on the other hand, can be done in a variety of ways. For example, it is possible to arrange the tools pivotable about two mutually perpendicular axes, which means that the Working head can be attached to any rigid holder. The fact that the individual segments do not run in a straight line but then arc-shaped, is particularly in the use of relatively long levers in relation to relatively small characters is negligible.

According to another embodiment of the present invention is the working head or the workpiece can be moved along two mutually perpendicular coordinate axes. This can, for example, be achieved in this way be that the workpiece on a coordinate table or the Arbsitskopf on a Koordina ^ enarm one Labeling device is attached.

As in the prior art mentioned at the beginning, the tools can be implemented in a variety of ways be, so it can be electrochemical or pyrographic tools, roller ball or color pens, milling or

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Engraving spindles, vibrators or similar tools are used. According to the individual tools Activation must also be carried out in different ways. For electrochemical tools the activation takes place, for example, by power supply. Is the tool of a mechanical type, e.g. as an engraving needle formed, the activation of the takes place according to an embodiment of the present invention Tools through their longitudinal movement towards the workpiece surface. This takes place in accordance with a further exemplary embodiment present invention by a pneumatic piston-cylinder unit, which is expediently over a power transmission lever on the engraving spindle or needle, which is provided with a return spring is, acts.

In order to be able to write a very large number of characters in a short time, several are expedient tools arranged next to one another are combined to form a block and two or more blocks arranged adjacent to one another so that the tools are parallel to one another. However, should have more characters are written when tools are available on the working head, this can preferably be done in such a way that that in a second labeling process the

Characters are applied between two already written characters, which has the advantage of that the idle travel of the working head between the two separate labeling processes is very short is.

Further details and embodiments of the invention are given in the ¹ following description in which the invention is described in more detail with reference to the shown in the drawings embodiments and explained. Show it: .

Figure 1 in a schematic front view

Working head for labeling workpieces according to an embodiment

present invention,

Figure 2 is a section along the line II-II

of Fig. 1,
20th

Figure 3 is a plan view of the labeled

Workpiece according to arrow III in FIG. 1, in an enlarged view,

FIG. ¹ H shows a section of FIG.

f.pri'i-hcrulen cut uureh a work L

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3A 23309

for labeling workpieces according to another embodiment present invention and

FIG. 5 - the top view of a workpiece labeled with the working head according to FIG. 4.

The working head 11 or 11 'shown in the drawing is used to label a workpiece 12 or 12 'with a large number of characters 13 in a single one Work or labeling process, with the individual Characters can be arranged in a row one behind the other and / or in several columns one below the other. The characters, especially digits, are in a multi-segment arrangement shown, especially in the 7-segment arrangement. It is believed, however, that the Characters, especially if all alphar.umei'iüchenen characters should be possible, can also be displayed or written in the 5 by 7 segment arrangement.

The working head 11 shown in Figures 1 and 2 has a base plate 16 on which protrudes vertically two side plates 17 and 18 arranged parallel to one another at a distance are attached. Between the two

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Side plates 17 and 18 is arranged at their front and lower regions 19, a holder 21, the with. several, here six through bores 22 are provided, in which tools 2 3 back and forth are movably guided. The tools 23 have in this illustrated embodiment Shape of engraving spindles or needles. The individual through bores 22 or engraving needles 2 3 have each a certain and constant distance from one another and are arranged in alignment. in the In the area of the through bores 22, the otherwise cuboid holder 21 has a strip-shaped projection 26, which faces when a workpiece 12 is inscribed.

The engraving needles 23 of the illustrated embodiment have a tip 27 with which the surface 14 of the workpiece 12 can be scratched and which only slightly protrudes beyond the front surface of the holder 21 or its projection 26 when the tool 2 3 0 is not activated, in the activated state however, it is advanced in the direction of the surface 14 of the workpiece Y 1 (cf. FIG. I) * Each engraving needle 23 has

also on her over the back 29 of the holder protruding end a collar 28, between which and the rear side 29 of the holder 21 a compression spring 31 is arranged, which surrounds the engraving needle shaft concentrically. The compression spring 31 is pretensioned in such a way that that she endeavors to insert the engraving needle “23” into her to push back the non-activated starting position.

The tools 23 or engraving needles are in your activated position with the help of one pneumatic Piston-cylinder unit 33 brought, which can preferably be acted upon on one side and in its starting position Can be reset by a return spring or the like. The pneumatic piston-cylinder unit 3 3 has a rectangular shape that is flat in cross section, i.e., both cylinder 34 and piston rod 36 have a very flat rectangular shape in cross-section. Corresponding to the tools 2 3 are the individual Piston-cylinder units 33, of which one 0 is assigned to each tool 2 3, directly arranged side by side and adjacent to one another. The piston-cylinder unit 3 3 are parallel to the rear 29 of the holder 21 and thus perpendicular to the longitudinal extension the engraving needles 23 arranged. On theirs

one end, lower in FIG. 1, of each cylinder 3 4 is provided with a tab 37 - the one on an axis 38, which is common to all units 33, is kept attached. The axis 3 8 is in the two side plates 17, 18 fixed. At the other end of the unit 33, the piston rod 36 protrudes from the cylinder 3 The end 39 led out is provided with a bore 41 and is pivotably connected to a lever 42. Of the Uobol 42 is roughly right-angled in the initial state

lü to the longitudinal axis of the piston-cylinder unit 33, so its longitudinal axis runs approximately parallel to the engraving needle 23 is penetrated, which is common to all levers 42 and which is fixed in the side plates 17, 18. The lever 42, which can be pivoted about the axis 47, has a recess in an area next to the bore 46 according to FIG 2 8 of the engraving needle 2 3 is applied under pretension of the compression spring 31. In this way, the lever 42 is provided with two arms which have very different lengths, so ua.ß a translated force transmission

Transfer from the piston-cylinder unit 33 to the engraving needle 2 3 takes place. In other words, will If the piston rod 36 is displaced in the direction of the arrow A, the lever 42 is about its axis 47

. 5 pivoted according to arrow B so that the stop edge 49 of the other lever arm opposes the engraving needle 2 3 the effect of the compression spring 31 in the direction of arrow C towards the surface 14 of the workpiece 12 emotional. As long as there is pressure in the piston-cylinder unit, the engraving needle 2 3 remains in its activated position Position.

Each cylinder 34 of the piston-cylinder unit 33 has a connection nipple 51 on its bracket 37 facing end provided, which nipple 51 via a hose 52 with a preferably electromagnetic actuatable pneumatic valves 53 is connected. All valves 53 are from a common pneumatic feed 54 fed and attached to the base plate 16. The switching of the valves S3 win 'with the help of: a control device not shown in this way made that the individual tools 2 3 operated individually and independently, so optionally or can be activated.

The inscription process is clear from FIG. First of all, it can be seen that the individual characters 13 are shown on the basis of the 7-segment arrangement, each of the segments being shown here in thin lines, while the thick lines mean that this segment is actually scratched or written into the workpiece surface . Since a total of six tools 23 arranged next to one another are provided in the exemplary embodiment of FIGS. 1 and 2, six characters 13 to 13 "arranged next to one another can be written with one inscription process. The course of the labeling process will be explained on the basis of the first segment arrangement S. The working head 11 is so to the. The surface 14 of the workpiece 12 to be inscribed is approached so that the tips 2 7 of the engraving needles 2 3 are opposite the respective starting point 56. The relative movement between the tools 23 or the working head 11 and the workpiece 12 takes place in the coordinate directions X and Y along the arrows P ^ to P- shown there, whereupon an empty return takes place according to the arrow P _R to the starting point 56. Depending on the characters 13 to be written, one or more of the tools 2 3 or engraving needles are activated during the passage through a segment length, go that in a lettering

Process different characters, in particular numbers, scratched or written into the workpiece surface 14 can be. It is understood that in this embodiment, the maximum width of the Character is determined or limited by the distance between the engraving needles 2 3 and the starting point .56 can also lie between other segments.

The relative movement of working head 11 or tools 23 on the one hand and workpiece 12 on the other hand can take place in a variety of ways. For example, the workpiece 12 can be attached to a coordinate table and then moved with it along the two coordinate axes X and Y running perpendicular to one another over the respective segment length. But it is also possible to do the same with the working head 11 by attaching it to a working head holder which can be moved in the two coordinate axes X ₅ Y. But it is also possible to attach the working head 11 to a rigid holder and to arrange the working head itself or the tools 23 to be pivotable about two mutually perpendicular axes, so that the 7-segments can also be traversed thereby.

In the working head 11 'shown in FIG. 4 according to another exemplary embodiment of the present invention, the tools 23 are not only arranged in a row next to one another, but also in the respective columns one below the other or in a second row below the first row. In order to achieve this, in this exemplary embodiment two working _{heads H 1} and 11 ″ in the configuration of FIGS. 1 and 2 are arranged set against one another, as can be clearly seen from FIG. The details of the working head 11 therefore do not need to be described in detail. The distance between the two parallel groups of tools 2 3 or engraving needles determines the maximum height of the band to be screaming; » Characters, whereby at the same time ( illegibility wr> a space between the lines must be taken into account.

From Figure 5 it is clear that with this working head 11 'a total of 2 times 6 characters 13 in a working or the labeling process can be written as a complete block, with the corresponding also Optional activation made here practically with each engraving needle 2 3 a different character is written can be. Moving through the individual segments of the

7-segment arrangement ei " ¹ follows hi or bei" in c'.e ryel.be η manner.

Here, too, the relative movement between the working head 11 'and the workpiece 12' can be in one of the ways described above Types are made.

It goes without saying that more or less than six tools 23 can also be provided in a row on the working head 11 or 11 '. The working head 11 'can also be expanded in that, instead of two, more than two rows of tools can be arranged one below the other or next to one another, whereby in particular for the rows in between ι' ¹ I ⁰ motion transmission of -Je ·· ■ << ■ "! ; .- ^r ... Ii v- \). ' .ht u 33 on the Wei / k2, <M.ip, .-; 23 st dt winKil L i: ^_v:; ... ^<m-.:. r j «ri · η · ΐι line; provided uein must.

If more characters 13 are to be written than tools 23 are present on the working head 11 or 11 ' are, this is preferably done in such a way that characters 13 between two "characters 13 already written in the first inscription process are applied, which means the 25th

The advantage is that the idle travel of the working head 11 or 11 'is very short between the two separate inscription processes or character sets. It understands that the size of the characters becomes smaller and the interposing both in the lines and in the column as well as in the diagonal direction.

In the two exemplary embodiments, engraving needles 23 were shown as tools. The invention However, measures can also be implemented in a different form for tools 2 3. Constructively similar will this be the case when using roller ball oilers as tools Color pens, milling spindles or vibrator pens are provided. Are electrochemical as tools If tools or pyrographic tools are provided, activation does not take place using the above described longitudinal movement in the direction of the surface of the workpiece to be labeled, but through 2Ü optional power supply to the individual tools In particular with tools that do not require mechanical movement, the Working head 11 'in a very simple manner by two

extended to three or more rows arranged one below the other, which are aligned with one another or offset ^{in the direction of Spa] If 1 η.}

In order to be able to write all alphanumeric characters, it is also possible to use the 5 by 7 segment arrangement to use to represent the characters 13, which means that the relative movement between the working head and the workpiece must pass along all of these 35 segments. A fundamental difference to the obon However, what is described does not exist, i.e. it must also be done here during the passage of each segment the individual tools 2 3 are optionally activated or remain in their rest position.

- End of description -

Claims (11)

DREISS, HQ.S £: NTHIJEN & - FUHLENDORF Hans LANGOSCH Dipl.-lng. (1963-1981) UWEDREISS Dr jur., Dipl.-Inp ... M. Sc. HEINZ HOSENTHIEN Dr.-Ing., Olpl.-Ing. -PAfiN ^ WWALXS - Authorized representative at the European Patent Office European Patent Attorneys Γ Π DREISS, HOSENTHIEN & FUHLENDORF, D-7000 STUTTGART Applicant; Saulius Baublys Auf der Schütte D-7148 Remseck-1 D-7000 STUTTGART 1 11- <U7 Π) 24 57 34 / 44TG ideapat TX? "22247idead Official file Z. Off. Ser. No. Your referenceOur referenceDateYour Ref.Our Ref.Date0311 01322. June 22, 1984 F / W Title: Working head for labeling workpieces Patent claims 1. Working head for labeling workpieces, in which a character can be written by a relative movement between the working head and workpiece with an activatable tool, characterized in that the working head (11, II ¹ ) has two or more tools (23) which are in are arranged at a specified distance from one another and which can be activated individually and independently of one another, and that the relative movement between the working head (11, 11 ') and workpiece (12, 12') is determined by "a multi-segment display of the characters to be written. tPU C / OPY Q), 2. working head "according to claim 1, characterized in that that the tools (23) in two or more rows and / or in two or more columns on the working head (11, 11 ') are arranged. 3. Working head according to claim 1 or 2, characterized in that that the relative movement is determined by the 7-segment display of characters and the activation of the individual tools (23) is controlled according to the characters to be written takes place optionally during the movement segment corresponding to the individual segments. · ' 4. Working head according to one of claims 1 to 3, characterized characterized in that the tools (23) can be pivoted about two mutually perpendicular axes are arranged. 5. Working head according to one of claims 1 to 3, characterized in that the working head (11, 11 ') or the workpiece (12, 12 V) can be moved along two • mutually perpendicular coordinate axes. 3423303 6. Working head according to one of the preceding claims, characterized in that the activation of the tools (23) takes place through their longitudinal movement towards the workpiece surface. . 7. Working head according to claim 6, characterized in that the tool (23) with a pneumatic Piston-cylinder unit (33) is in operative connection. 8. Working head according to claim 7, characterized in that that between the piston-cylinder unit (33) and the tool (23) a transfer hobnl (M-2) arranged and the tool (23) with a Return spring (31) is provided. 9. Working head according to claim 7 or 8, characterized in that the piston-cylinder Einhr · i t: (23) a flat, rectangular cross-section! örriilgen Has cylinder (34) and that several piston-cylinder units (33) directly next to one another and lie against each other. EPO COPY 10. Working head according to one of claims 7 to 10, characterized in that several side by side arranged tools (23) are combined into a block and that two or more blocks are arranged adjacent to one another in such a way that the tools (23) are parallel to one another. 11. Working head according to one of the preceding claims, characterized in that in a second Labeling process Characters between the characters applied in the first labeling process (13) are writable. - End of claims -