WO1996028286A1

WO1996028286A1 - Device for cutting or carving, especially for plotters and/or other, preferably automatic, writing, drawing, carving or cutting installations or devices

Info

Publication number: WO1996028286A1
Application number: PCT/DE1996/000418
Authority: WO
Inventors: Roland Weber; Thomas Bothe
Original assignee: J.S. Staedtler Gmbh & Co.
Priority date: 1995-03-13
Filing date: 1996-03-02
Publication date: 1996-09-19
Also published as: DE19508587A1

Abstract

In a device (1) for cutting or carving, especially for plotters and/or other, preferably automatic, writing, drawing, carving or cutting installations or devices, in which at least one tool (5) takes the form of a blade, especially a draw blade or carving point and is fitted in a casing and connected to the installation or device directly or with the aid of an adapter (4), the external shape, design and dimensions of the casing (10) correspond to those of prior art writing or drawing instruments, especially those which can be universally fitted in various installations or devices or into suitable holders therefor. In the casing (10) or adapter (4) there are also a bearing holder (13), a magnet (14), a bearing (15) with a bearing plate (16) and possibly one or more ball-bearings (16, 161; 17, 171).

Description

1

Device for cutting or scoring, in particular for plotters and / or for other, preferably automatic, writing, drawing, scoring or cutting systems or devices.

description

The invention relates to a device for cutting or scoring, in particular for plotters and / or for other, preferably automatic, writing, drawing, scoring or cutting systems or devices.

Various solutions for such devices and for their arrangement are known from the prior art. For example, EP 0 276 027 A2 shows a cutting piotter with cutting devices with different housings and with different tools. Several cutting or scoring devices are available on the market, which are each only suitable for a specific system, as in the EP-OS. Another disadvantage here is that these known devices are very expensive, that practically every tool is assigned its own housing, that this housing usually only fits for a single plotter shown or provided, and that a tool change is relatively cumbersome and time-consuming .

In contrast, the object of the invention is to provide a device for cutting or scoring, in particular for plotters and / or for other, preferably automatic, writing, drawing, scoring or cutting systems or devices, which is economical and inexpensive can be used in various plotters or similar systems or devices - or also in handheld devices - which, if necessary, can also contain or accommodate different tools and / or which can also be easily exchanged for conventional writing or drawing devices.

This object is achieved with the features of claim 1. Advantageous refinements and developments of the invention are included in the subclaims. The invention is illustrated below with the aid of some

Exemplary embodiments are described in more detail with the aid of the drawings.

Here show:

Figure 1 shows a first embodiment of a proposed

Device with axial adjustability; Figure 2 shows a second embodiment with an axial basic setting and Figure 3 shows another embodiment with an adapter.

1 shows a first embodiment of a device 1 according to the invention for cutting or scribing, for a plotter and / or for another, automatic, writing, drawing, scribing or cutting system or for use in a manual writing or drawing device shown. Here, the tool 5 is designed as a knife and inserted from the housing tip 101 into the tool bore 19 of the housing 10, which in turn can be arranged or fastened with the fastening thread 11 in a pin receptacle of a plotter, any holder or an adapter.

The outer shape, design and dimensions of the housing 10 correspond exactly to the shape, design and dimensions of conventional pens or drawing pens, as are known for the use of ink or ink, or corresponding receptacles or adapters therefor, which are usually used in plotters or in other writing or drawing systems or devices are used. In particular, the housing 10 corresponds in its outer shape, design and dimensions to the shape, design and dimensions universally usable in various plotters or in other writing or drawing systems or devices, pens or drawing pens or corresponding receptacles or adapters therefor, which are customary be used. A bearing holder 13 provided with an enlarged bearing head 12 is arranged in the housing 10 or screwed into the bearing thread 18. The bearing holder 13 is formed or designed axially adjustable by the extended bearing thread 18 and arranged such that the tool 5 protrudes from the housing tip 101 at the desired or correct distance. In this position, the axially adjustable bearing holder 13 is fixed or fixed by a lock nut 6, which is clamped on the bearing thread 18 against the rear end of the housing 10.

The bearing holder 13 has a magnet 14, a bearing 15 and a bearing plate 16 in axial sequence towards the tip or supports these parts.

The bearing plate 16, which is preferably made of hardened or coated steel or of hard metal, corundum or sapphire, is provided with a recess as a centering cone 160 for the central reception and axial counter-bearing of the bearing cone 53 of the tool 5. The centering cone 160 is in the bearing plate in order to minimize friction 16 and the bearing cone 53 on the tool 5 are designed in such a way that the tool 5 or its bearing cone 53 is seated on the bearing plate 16 in a punctiform manner. The centering cone 160 thus has a, at least slightly larger, cone angle - for example 90 degrees - than the bearing cone 53, which can then be, for example, 85 or 88 degrees. For further radial centering of the tool 5, the front housing bearing 17 is designed as a slide bearing, the tool 5 itself preferably being a freely rotating drag knife, the rear end of which is shaped as a tapered bearing cone 53, while the front end of the tool 5 is an oblique cutting edge 52 forms. Here, the tip 51 of the cutting edge 52 is arranged off-center at the front end of the tool 5, that is to say that it lies next to the central axis 7 of the tool 5 and of the housing 10, as a result of which, in conjunction with the easy rotation of the knife about its longitudinal axis 7 , the tool 5 or its cutting edge 52 always aligns itself automatically in the cutting direction. The tool 5 is also loosely inserted or insertable into the housing 10 so that it can be replaced particularly easily.

The tool 5 is held axially by radially or axially acting forces in the housing 10 against unintentional loosening or falling out.

In particular, the tool 5 can be held in the housing 10 by radially and axially acting frictional forces - and after it has been overcome it can be axially detachable. However, it is particularly advantageous to ensure that the tool 5 is held axially by means of axially acting magnetic forces. However, it must be ensured that the tool 5 is always rotatable, i.e. that the knife remains automatically rotatable in the housing 10 in spite of the radially and / or axially acting holding forces and the cutting forces that may occur, so that its cutting edge 52 is always automatically aligned in the cutting direction following the cutting movement.

As a particularly advantageous embodiment of the invention, a single housing 10 should also serve or be suitable for receiving different tools 5 - for example alternating cutting knives or scribing tools - or similar tools 5 with different tips 51 and / or different cutting edges 52.

Each tool 5 corresponds in its outer shape, design and dimension at least in the area of the tool bore 19, possibly enlarged in diameter in sections, or in the contact area with the housing 10 to the shape, design and dimension of the tool bore 19 of the housing 10 and is in the design and positioning of the bearing cone 53 with respect to the centering cone 160 in the bearing plate 16 designed and dimensioned accordingly.

The particularly simple device 2 shown in FIG. 2 also has a housing 20 provided with an external fastening thread 21 and a housing 20 inserted therein a knurled bearing head 22, bearing holder 23, at the front end of which a magnet 24, a bearing 25 and a bearing plate 26 are arranged. With the bearing thread 28, the bearing holder 23 is firmly screwed into the housing 20. There is no axial adjustability here. The tool 5 inserted into the tool bore 29 also has a cutting edge 52 and an off-center point 51 and is guided centrally and rotatably in a housing bearing 27 designed as a slide bearing. Here, the bearing cone 53 is also supported centrally in a conical recess or in a centering cone 260 of the bearing plate 26 and axially counter-supported. The bearing holder 23 is formed or designed axially fixed by the bearing thread 28 and arranged and dimensioned axially such that the tool 5 protrudes from the housing tip 201 at the desired or correct distance. In this position, the axially non-adjustable bearing holder 23 is fixed or fixed by the collar of the bearing head 22, which braces against the rear end of the housing 20 via the bearing thread 28.

The device 3 according to FIG. 3 is provided with a slightly different bearing holder 33, which has a bearing head 32 of the same diameter and is screwed into the bearing thread 38 of the housing 30. This bearing holder 33 supports an inserted magnet 34, the bearing 35 and the bearing plate 36 designed here as a ball bearing axially from the rear and thus fixes the axial position of the tool 5. For the axial support of the tool 5 or for concentric reception and for the axial counter-bearing thereof Bearing cone 53, a ball bearing with radially and axially acting bearing balls 361 is arranged, which simultaneously replace the centering cone.

For radial centering of the tool 5 inserted into the tool bore 39, the front housing bearing 37 arranged on the housing tip 301 is also a Ball bearing and has radially acting bearing balls 371. Here too, the tool 5 is designed as a so-called drag knife, the cutting edge 52 of which also ends in a tip 51 which is offset from the axis 7. Since the housing 30 is not arranged here directly in the pin receptacle of a plotter or a manual holder, it is inserted into an adapter 4 and screwed into it with the fastening threads 31 and 41 and thus fixed axially immovably, the adapter 4 being the respective plotter - Or has holder-specific design and / or dimensions. To securely hold the housing 30, the adapter 4 has an internal fastening thread 41 and a fixing collar 42 for axial fixation in the plotter or holder. It is also advantageous if the receiving bore 43 and the centering bore 49 of the adapter 4 are designed and dimensioned such that several or different housings 10, 20, 30 with possibly different tools 5 can be used and / or arranged interchangeably .

In addition, however, it can also be particularly advantageous if the tools 5 are designed and dimensioned such that they can be inserted directly into the receiving bore 43 and into the centering bore 49 of the adapter 4 and if the tool shaft 54 is reinforced and the housing 10, 20, 30 forms or replaces. Alternatively, vice versa, the adapter 4 as a whole can replace the housing 10, 20, 30 if its walls are designed and dimensioned such that they can directly accommodate the tool 5.

In both cases, the adapter 4 advantageously also has a bearing 45 and / or a bearing plate 46 for axially supporting the bearing cone 53 of the tools 5. Likewise, a magnet 44 and / or a ball bearing is arranged in the adapter 4 for axially fastening the of the respective tool 5 and / or for the radial fixation of the respective bearing cone 53. Likewise, if necessary, a housing bearing 47 and a bearing thread 48 can be arranged on the adapter 4. Positions:

2, 3 devices for cutting or scoring, 20, 30 housing (of 1, 2, 3)

101, 201, 301 housing tip (of 10, 20, 30), 21, 31 mounting thread (on 10, 20, 30), 22, 32 bearing head (on 13, 23, 33), 23, 33 bearing holder (in 10, 20 , 30), 24, 34 magnet (in 13, 23, 33), 25, 35 bearing (in 13, 23, 33), 26, 36 bearing plate (in 15, 25, 35)

160, 260 centering taper (on 16, 26) 361 bearing ball (s) (in 36), 27, 37 housing bearing (on 10, 20, 30)

371 bearing ball (s) (in 37), 28, 38 bearing thread (on 13, 23, 33), 29, 39 tool bore (in 10, 20, 30)

Adapter (for 10, 20, 30)

41 fastening threads (on 4)

42 fixing collar (on 4)

43 location hole (in 4)

44 magnet (in 4)

45 bearings (in 4)

46 bearing plate (in 4)

47 housing bearings (in 4)

48 bearing thread (in 4)

49 center hole (in 4)

Tool (knife, drag knife or mandrel or scoring mandrel)

51 top (at 5)

52 cutting edge (on 5)

53 bearing cones (on 5)

54 tool shank (on 5)

Lock nut (on 18) axle (from 1, 2, 3, 4, 5)

Claims

Expectations

1. Device for cutting or scoring, in particular for plotters and / or for other, preferably automatic, writing, drawing, scoring or cutting systems or devices, at least one tool being designed as a knife or mandrel and arranged in a housing and directly or with the help of an adapter, connected to the system or the device, characterized in that the housing (10, 20, 30) in its outer shape, design and dimension of the shape, design and dimension of conventional pens or crayons for the Corresponds to the use of ink or ink or corresponding recordings, which are usually used in plotters or in other writing or drawing systems or devices.

2. Apparatus according to claim 1, characterized in that the housing (10, 20, 30) in its outer shape, design and dimension of the shape, design and dimension universally usable in various plotters or in other writing or drawing systems or devices writing - or crayons or corresponding recordings for this, which are usually used.

3. Apparatus according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that in the housing (10, 20, 30), optionally with a bearing head (12, 22, 32) provided bearing holder (13, 23, 33) is arranged, preferably screwed.

4. The device according to claim 3, characterized in that the bearing holder (13) is axially adjustable or designed and arranged.

5. The device according to claim 4, that the axially adjustable bearing holder (13) can be locked by a lock nut (6).

6. Device according to one of the preceding claims, that the bearing holder (13, 23, 33) has and / or supports a bearing plate (16, 26, 36).

7. Apparatus according to claim 6, that the bearing plate (16, 26, 36) has a recess as a centering cone for receiving and counter-bearing the bearing cone (53) of the tool (5).

8. The device according to claim 7, that the centering cone for receiving and counter-bearing the bearing cone (53) of the tool (5) is formed by radially and axially acting bearing balls (361).

9. Device according to one of the preceding claims, that the front housing bearing (17, 27) serving as the radial centering of the tool (5) is designed as a plain bearing.

10. Device according to one of claims 1 to 8, characterized in that the radial centering of the tool (5) serving front housing bearing (37) is designed as a ball bearing and has radially acting bearing balls (371).

11. The device according to any one of the preceding claims, that the tool (5) is designed as a freely rotating drag knife.

12. Device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the rear end of the tool (5) is designed as a tapered bearing cone (53).

13. The device according to one of the preceding claims, that the front end of the tool (5) is designed as an oblique cutting edge (52).

14. Device according to one of the preceding claims, characterized in that the tip (51) at the front end of the tool (5) is arranged off-center, that is, next to the central axis (7) of the tool (5) and the housing (10, 20, 30).

15. Device according to one of the preceding claims, that the tool (5) is loosely inserted or can be used in the housing (10, 20, 30).

16. The apparatus of claim 15, d a d u r c h g e k e n n z e i c h n e t that the tool (5) by radial or axial forces in the housing (10, 20, 30) is held.

17. The apparatus according to claim 16, characterized in that the tool (5) is held axially releasably in the housing (10, 20, 30) by radially acting frictional forces.

18. The apparatus according to claim 16, so that the tool (5) is held axially releasably in the housing (10, 20, 30) by axially acting magnetic forces.

19. Device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the tool (5) is rotatably mounted and remains rotatable despite the radially or axially acting holding forces in the housing (10, 20, 30).

20. Device according to one of the preceding claims, characterized in that a single housing (10, 20, 30) for receiving different tools (5) or similar tools (5) with different tips (51) and / or different cutting edges (52) is used .

21. The apparatus according to claim 20, characterized in that each tool (5) in its outer shape, design and dimension, at least in the contact area with the housing (10, 20, 30), the shape, design and dimension of the tool bore (19, 29, 39) of the housing (10, 20, 30) and the design and positioning of the centering cone (160, 260) in the bearing plate (16, 26, 36).

22. Device according to one of the preceding claims, characterized in that the housing (10, 20, 30) inserted in an adapter (4) and is preferably arranged axially immovably fastened in this.

23. The apparatus of claim 22, d a d u r c h g e k e n n z e i c h n e t that the adapter (4) has a fastening thread (41) and a fixing collar (42).

24. The device according to claim 1 to 22, characterized in that the adapter (4) has a receiving bore (43) and a centering bore (49) which are designed and dimensioned such that several or different housings (10, 20, 30th) ) can optionally be used with different tools (5) and / or can be attached interchangeably.

25. The apparatus of claim 22 or 23, characterized in that the tools (5) are designed and dimensioned such that they can be used directly in the receiving bore (43) and in the centering bore (49) of the adapter (4) and that the Tool shank (54) forms or replaces the housing (10, 20, 30).

26. The apparatus of claim 25, that the adapter (4) has a bearing (45) and / or a bearing plate (46) for axially supporting the bearing cone (53) of the tools (5).

27. The apparatus of claim 25 or 26, so that the adapter (4) has a magnet (44) and / or a ball bearing for axially fastening the tools (5) and / or for radially fixing the respective bearing cone (53).