EP3025834B1 - Guiding device - Google Patents

Description

The invention relates to a guide device for a workpiece and a woodworking machine with the features in the preamble of the independent claims.

Such a guide device and such a processing machine go, for example, from EP 0 906 815 A2 emerged.

A woodworking machine with a one-dimensionally adjustable guide device is known from practice. The range of variants of the wood profiles that can be processed with it is limited.

It is therefore the object of the present invention to provide an improved guide device and an improved processing machine.

The invention solves this problem with the features in the independent claims.

The claimed guide device can be adjusted in height and in width, which results in a very large adjustment range and a large variety of workpiece geometries that can be machined, in particular profile geometries.

The guide device has guide means which are designed to be movable relative to one another and mutually transversely to the conveying direction so that they can intervene and overlap. The guide device has one or more relatively stationary height and / or side guide means and one or more height and / or side guide means that can be advanced transversely to the conveying direction.

There are particular advantages in the preferred use in window and furniture construction for the wooden profiles used there. These can have a complicated shape Have steps, curves or the like. With the claimed guide device, these complicated profile shapes can nevertheless be guided safely and precisely for machining.

Machining can be done, for example, by grinding one or more workpiece sides. This can be done in the area of the guide device. In addition, machining can also take place by brushing off or otherwise cleaning the workpiece or by other machining or treatment.

A particular advantage of the claimed height and lateral guide means capable of engaging and overlapping is the greatly enlarged infeed area. Due to the overlap or the tooth-shaped or tooth-like mutual engagement, the height and lateral guide means and the guide channel formed thereby can also be adjusted to very small workpiece sizes and can guide them safely and precisely.

The height and side guide means which can be advanced are mutually designed to be able to intervene and overlap at right angles to the conveying direction. The height and side guide means which can be advanced can also be designed to be capable of engaging and overlapping with an adjacent, relatively stationary height or side guide means transversely to the conveying direction.

The guide elements arranged on the lateral and height guide means can, for example, be designed as rotatable rollers. At least some guide elements, preferably the feedable guide elements, can have a length directed transversely to the conveying and guiding direction, which is equal to or greater than the maximum facing workpiece dimension. This means everyone can Workpiece sizes can be guided safely and reliably. However, it is alternatively possible for the said length of the guide elements to be smaller than the maximum facing workpiece dimension.

The guide elements, in particular rollers, preferably have a straight extension or cylindrical shape in the contact area with the workpiece. This is advantageous because the row arrangement in the conveying or guiding direction creates a guiding channel with a constant contour and flat envelope walls, which is equally well suited for a wide variety of workpiece cross-sections and requires no further adjustment apart from the adjustment of the height and lateral guiding means. However, the straight extension or cylindrical shape is not absolutely necessary, so that deviations and contoured shell shapes are also possible.

The deliverable guide elements, possibly also the relatively stationary guide elements, can each be arranged on the front of a slim support arm. The support arm can extend transversely to the conveying direction from a rear frame. The support arms can each be arranged offset in the conveying direction with a gap and, if necessary, able to engage and overlap. In particular, the support arms aligned transversely to one another can be arranged with a gap offset and mutually capable of engagement and overlap. It is also favorable if the support arms have a free cantilever length that is greater than the engagement and overlap path.

The orientation of the workpieces when they are fed or placed in the processing machine can be selected as required. Safe and precise guidance can be ensured for every workpiece alignment. You can thus feed all workpieces with the visible side up, especially when the workpiece processing, preferably Grinding takes place in the processing machine from above. This means, for example, that narrow workpieces can be machined upright. This advantage is of particular importance in the case of folded window timbers, since the widest side is usually the visible side of the window. Such a window square timber would therefore have to be inserted with the narrow side down. With the machining technique according to the invention, this is possible without problems in guiding and machining the workpiece. An undesired tilting of the workpiece and an associated deterioration in the surface and machining quality can be reliably prevented with the invention.

When processing a workpiece with a horizontal sanding belt, an exact horizontal guidance of the workpiece is necessary to achieve an optimal surface and processing quality. This is ensured with the invention by the channel formation and the four-sided guide, in particular roller guide.

After the workpieces can be inserted and processed in any orientation in the claimed processing device, this insertion position and location of the workpiece can be coordinated with upstream or downstream processing steps. The processing machine claimed, in particular a woodworking machine, is therefore ideally suited for automated production. It can be easily combined with subsequent equipment or machines, in particular conveying, painting and drying systems.

Further advantageous refinements of the invention are specified in the subclaims.

Figur 1:

eine perspektivische Ansicht einer Holzbearbeitungsmaschine mit einer Führungseinrichtung für ein Werkstück,

Figur 2:

eine vergrößerte perspektivische Darstellung der Führungseinrichtung von Figur 1,

Figur 3:

eine perspektivische Darstellung der Führungsmittel der Führungseinrichtung von Figur 1 und 2,

Figur 4 bis 6:

eine Draufsicht, eine Seitenansicht und eine Stirnansicht der Führungsmittel gemäß Pfeilen IV, V und VI von Figur 2, und

Figur 7 und 8:

die Führungseinrichtung in verschiedenen Betriebsstellungen an unterschiedlichen Werkstückformen.

The invention is shown schematically and by way of example in the drawings. Show in detail:

Figure 1:

a perspective view of a woodworking machine with a guide device for a workpiece,

Figure 2:

an enlarged perspective view of the guide device of FIG Figure 1 ,

Figure 3:

a perspective view of the guide means of the guide device from FIG Figure 1 and 2 ,

Figure 4 to 6:

a plan view, a side view and an end view of the guide means according to arrows IV, V and VI of FIG Figure 2 , and

Figure 7 and 8:

the guide device in different operating positions on different workpiece shapes.

The invention relates to a guide device (1) for a workpiece (3) and a processing machine (2), in particular a woodworking machine, with such a guide device (1).

Figure 1 shows a processing machine (2) for workpieces (3) which are guided along a conveying direction (7) by means of the guide device (1). The workpieces have an elongated shape and are preferably designed as profiles. They can be made of any material. They preferably consist of a wood material, the machine (2) being designed as a woodworking machine.

The workpieces (3) are designed in particular as wooden profiles for window and furniture construction. These are wooden profiles that are manufactured to a specific cross-sectional shape and dimension in an upstream planing machine or the like and are then pretreated in the woodworking machine (2) for subsequent painting.

In this case, they are processed by means of one or more processing devices (8, 9) in the area of the guide device (1). For example, these are two grinding devices (8) arranged one behind the other at a distance in the conveying direction (7), which are designed, for example, as belt grinders with which the top and bottom of the workpiece (3) are ground. These grinding devices (8) are located in corresponding free spaces (32) of the guide device (1) and are aligned transversely to the conveying direction (7).

Furthermore, one or more further processing device devices (9) can be present in the area of the guide device (1). These can be, for example, brush units for cleaning the workpiece (3) before and after grinding. For example, one or two vertical brush units (9) are arranged in the entrance area of the guide device (1), the inclination of which can be changed by means of an adjusting device (10) and can also be delivered to the workpiece (3) transversely to the conveying direction (7). Furthermore, one or more further brush units (9), in particular horizontal brushes, can be arranged between and behind the grinding devices (8).

The height and width of the guide device (1) can be adjusted. It contains guide means (11, 12, 21, 22) which can move relative to one another. The adjustment is possible in one or two axes. It can be done manually or by means of a drive. In particular, an automatic adjustment based on a dimension and / or position input is possible by means of a suitable electronic control (not shown) and corresponding drives. The dimensions can be entered manually by an operator on site or remotely via data transmission. For this purpose, the processing machine (2) can have a suitable operating device with a display, for example a monitor, and possibly one or more interface (s) for data transmission.

The guide device (1) has, for example, one or more relatively fixed height guide means (21) and side guide means (11) as well as one or more height guide means (22) and side guide means (12) which can be advanced transversely to the conveying direction (7). These guide means (11, 12, 21, 22) are arranged and aligned along the conveying direction (7). Together they form a guide channel (4) surrounding the workpiece (3). The guide means (11, 12, 21, 22) are arranged at right angles to one another and at a corner, and together they form a guide channel (4) with a rectangular cross-section.

The processing machine (2) also has a conveying device (5) with which the workpiece (3) is transported into and through the guide device (1) and the processing machine (2). The conveyor device (5) has a conveyor drive (6) with conveyor rollers (23) which are arranged, for example, in the lower region of the conveyor device (1). The conveyor rollers (23) can be part of the lower and relatively fixed height guide means (21). Alternatively, the conveying device (5) can be designed and arranged in a different manner.

The deliverable side and height guide means (12, 22) can be delivered together or independently of one another. In the exemplary embodiments shown, there is a separate delivery facility, the deliverable lateral guide means (12) having its own delivery device (19) with a horizontal delivery axis (20) transverse to the conveying direction (7). The adjustable height guide means (22) also has its own feed device (29) with a vertical feed axis (30). The delivery devices (19, 29) can be operated manually or by machine. In the exemplary embodiments shown, they each have their own controllable delivery drive. The feed drives can be connected to the mentioned control. The infeed can take place, for example, by specifying the position of the infeed and / or by specifying the dimensions of the workpiece (3).

As Figures 7 and 8 To illustrate, the workpieces (3), in particular the wooden profiles, can have a very different cross-sectional shape. In the simplest case, they can be designed as a rectangular profile. In the preferred window and furniture construction sector, there are also other more complicated cross-sectional shapes with steps, curves or the like contours deviating from flat surfaces. Figures 7 and 8 show two examples of this. With the claimed guide device (1), any cross-sectional sizes and geometries of the workpieces (3) can be guided precisely and safely in the guide channel (4).

The side and height guide means (12, 22) that can be advanced are mutually capable of engaging and overlapping at right angles to the conveying direction (7). Your delivery movements and delivery routes can cross each other. This allows very large and very small workpiece cross-sections to be guided. In Figures 7 and 8 is the Engagement and overlap area (31) shown.

The adjustable lateral and height guide means (12, 22) can also be designed to be capable of engaging and overlapping with an adjacent and relatively stationary side or height guide means (11, 21) transversely to the conveying direction (7). However, this is not absolutely necessary. You can also according to Figure 6 be arranged with a lateral or vertical offset and are moved past each other in the delivery without intervention.

The lateral and vertical guide means (11, 12, 21, 22) each have a plurality of guide elements (13, 14, 23, 24) arranged in a row with a mutual spacing (18, 28) along the conveying direction (7).

At least the spaced-apart guide elements (14, 24) of the adjustable lateral and height guide means (12, 22) are mutually offset with gaps in the conveying direction (7) and are thus arranged such that they can engage and overlap.

In addition, the guide elements (13, 23) of the relatively stationary side and height guide means (11, 21) can be arranged in a row with a mutual spacing along the conveying direction (7) and offset with gaps.

The guide elements (13, 14, 23, 24), which are preferably lined up in a row in the conveying direction (7), form the lateral, upper and lower envelope walls of the guide channel (4). The straight extension of the guide elements (13, 14, 23, 24) results in flat envelope walls. Alternatively, contouring is possible.

The number of guide elements (13,14,23,24) on the lateral and height guide means (11,12,21,22) can be the same or different. At least some of the lateral guide elements (13, 14) are preferably arranged directly opposite one another along the guide or conveying direction (7) and thus act on both sides in a guiding manner on the workpiece (3) at the same height. A corresponding opposite arrangement can also be present in the case of the upper and lower guide elements (23, 24).

The guide elements (13, 14, 23, 24) can be designed in any suitable manner. They preferably have a straight extension in the contact area with the workpiece (3). In the illustrated and preferred exemplary embodiments, they are designed as rotatable, preferably cylindrical rollers, the axes of which are each aligned transversely to the conveying direction (7). The side rollers (13, 14) and the deliverable roof rollers (24) are freely rotatable on axles. The lower stationary guide elements or floor rollers (23) can be designed in the aforementioned manner as controllably driven conveyor rollers of the conveyor device (5). A drive can take place, for example, via the chain drives indicated in the drawings. Alternatively or in addition, one or more of any other guide elements (13, 14, 23, 24) can be designed as controllably driven conveyor rollers of the conveyor device (5).

The cylindrical rollers (13,14,23,24) can have a jacket made of an elastic material, for example rubber. The jacket material can also have a high coefficient of friction, especially in the case of the floor or conveyor rollers (23). The diameter of the floor or conveyor rollers (23) can be larger than the diameter of the side and roof rollers (13,14,24). The same applies if, alternatively or in addition, other side or Height rollers (13,14,24) are designed as driven conveyor rollers.

The deliverable guide elements (14, 24), in particular side and roof rollers, are each arranged on a slim support arm (17, 27) at the front, the support arm (17, 27) extending from a rear frame (16, 26) transversely to the Direction of conveyance (7) extends. The support arms (17, 27) are also spaced apart in the conveying direction (7). The horizontal and vertical support arms (17, 27) are mutually offset in a gap (18, 28) and thus arranged so that they can engage and overlap. Figure 4 and 5 illustrate this formation of side and roof rollers (14, 24) and their support arms (17, 27).

The support arms (17, 27) each have a free cantilever length that is greater than the engagement and overlap path. As a result, the guide elements (14, 24) that can be advanced are spaced so far from their respective frames (16, 26) that collisions between the guide elements (14, 24) and the respective other frames (26, 16) during delivery and mutual overlap. be avoided.

In Figures 7 and 8 the mutual engagement and overlap positions (31) are shown in each case. The deliverable side rollers (14) with their support arms (17) can each grip into the gaps (28) between the roof rollers (24) and their support arms (27) during horizontal delivery (20). Conversely, the roof rollers (24) and support arms (27) each grip into the gaps (18) between the side rollers (14) during vertical delivery (30).

The relatively stationary guide elements (13, 14) or side and bottom rollers or conveyor rollers can also be slender and in the manner described above be arranged spaced support arms. Alternatively, such an arrangement and the possibility of engagement and overlapping between adjustable and relatively stationary guide elements (13, 14, 23, 24) can be dispensed with.

As Figure 7 clarified, the length (1) of the guide elements (13,14,23,24) can be equal to or greater than the facing dimension (w) of the workpiece (3). This is for example at Figure 7 the height of the workpiece (3), which is smaller than the length of the side rollers (13,14). The same applies to the workpiece width and the floor and roof rollers (23, 24). Alternatively, the length (1) can be smaller than the facing dimension (w).

The upright lateral guide elements (13, 14) are preferably arranged just above the lower guide elements (24). The workpiece (3) is enclosed tightly and circumferentially in the lower area.

The adjustable lateral and height guide means (12, 22) each have an element holder (15, 25) for their guide elements (14, 24). The element holders (15, 25) each have one or more frames (16, 26) with said support arms (17, 27) for this purpose. The guide elements (14, 24) can be arranged individually or in groups, there being a gap between the groups in the conveying direction (7). In this way, for example, the aforementioned free spaces (32) for the processing devices (8, 9) can be formed. The frames (16, 26) are connected to one another and to their respective delivery device (19, 29) by bridging the distances by a common support beam or a support plate.

The machine components, in particular the guide device (1), the conveying device (5) and the processing devices (8, 9) can be controlled via the said electronic control of the woodworking machine. Regulation is also possible in conjunction with a suitable sensor system. Modifications of the embodiments shown and described are possible in various ways. In particular, the features of the exemplary embodiments can be combined with one another as desired or also interchanged.

REFERENCE LIST

1

Guide device

2

Woodworking machine

3

Workpiece, profile

4th

Guide channel

5

Conveyor

6th

Conveyor drive

7th

Conveying direction

8th

Processing device, grinding device

9

Processing device, brush unit

10

Adjusting device

11

Lateral guide means relatively stationary

12th

Lateral guide means can be delivered

13th

Guide element, side roller relatively stationary

14th

Guide element, side roll deliverable

15th

Element holder, roll holder

16

frame

17th

Beam

18th

Free space, gap

19th

Delivery device

20th

Infeed axis, infeed direction (horizontal)

21

Elevation means relatively stationary

22nd

Height guide can be delivered

23

Guide element relatively stationary, conveyor roller

24

Guide element, roof roller can be delivered

25th

Element holder, roll holder

26th

frame

27

Beam

28

Distance, gap

29

Delivery device

30th

Infeed axis, infeed direction, (vertical)

31

Engagement and overlap area

32

free space

l

Length of guide means

w

Dimension workpiece, height or width

Claims (15)

1. Guiding device for a workpiece (3), in particular a profile from a wooden material, which is movable along a conveying direction (7) on a processing machine (2), in particular a woodworking machine, wherein the guiding device (1) guides the workpiece (3) along a conveying direction (7) and is configured so as to be adjustable for height and width, and has guiding means (11, 12, 21, 22) which are configured so as to be movable relative to one another as well as transversely to the conveying direction (7) so as to be capable of mutually engaging and overlapping, wherein

   - the guiding device (1) has one or a plurality of relatively stationary vertical and/or lateral guiding means (11, 21) and one or a plurality of vertical and lateral guiding means (12, 22) which are actuatable transversely to the conveying direction (7);

   - wherein the actuatable vertical and lateral guiding means (12, 22) are configured so as to be capable of mutually engaging and overlapping transversely to the conveying direction (7);

   - wherein the actuatable vertical and lateral guiding means (12, 22) and the relatively stationary vertical and/or lateral guiding means (11, 21) have in each case a plurality of guiding elements (13, 14, 23, 24) which are disposed at a mutual spacing (18, 28) in one row along the conveying direction (7) and are in each case configured as a rotatable roller.
2. Guiding device according to Claim 1, characterized in that the actuatable vertical and lateral guiding means (12, 22) in relation to an adjacent, relatively stationary vertical or lateral guiding means (11, 21) are configured so as to be capable of mutually engaging and overlapping transversely to the conveying direction (7), and/or the actuatable vertical and lateral guiding means (12, 22) in relation to an adjacent, relatively stationary vertical or lateral guiding means (11, 21) are disposed transversely to the conveying direction (7) and at a lateral or vertical offset, and when actuated are moved past one another without engaging.
3. Guiding device according to one of the preceding claims, characterized in that at least some guiding elements (13, 14, 23, 24), preferably the actuatable guiding elements (14, 24), have a length which is directed transversely to the conveying direction (7) and is equal to or larger than the maximum facing dimension of the workpiece (w).
4. Guiding device according to one of the preceding claims, characterized in that the spaced-apart guiding elements (14, 24) of the actuatable lateral and vertical guiding means (12, 22) are in each case disposed so as to include a gap (18, 28) as well as capable of engaging and overlapping.
5. Guiding device according to one of the preceding claims, characterized in that the actuatable guiding elements (14, 24) are in each case disposed on the front end of a slender support arm (17, 27) which from a rearward frame (16, 26) extends transversely to the conveying direction (7), wherein the support arms (17, 27,) which are mutually aligned in a transverse manner, are in each case disposed so as to be offset in the conveying direction (7) while including a gap (18, 28) and being capable of engaging and overlapping.
6. Guiding device according to Claim 5, characterized in that the actuatable lateral and vertical guiding means (12, 22) have in each case one element holder (15, 25) which has one or a plurality of frames (16, 26) having one or a plurality of support arms (17, 27).
7. Guiding device according to one of the preceding claims, characterized in that at least one of the guiding elements (13, 14, 23, 24) is configured as a controllably driven conveyor roller (5) .
8. Guiding device according to one of the preceding claims, characterized in that the guiding elements (13, 14, 23, 24) are disposed in groups and in the conveying direction (7) form one or a plurality of comparatively large voids (32) for a processing device (8, 9).
9. Guiding device according to one of the preceding claims, characterized in that the vertical and lateral guiding means (11, 12, 21, 22) are disposed and aligned along the conveying direction (7) .
10. Guiding device according to one of the preceding claims, characterized in that the vertical and lateral guiding means (11, 12, 21, 22) are disposed so as to be mutually orthogonal and around corners, wherein said vertical and lateral guiding means (11, 12, 21, 22) for the workpiece (3) form a guide duct (4) which is rectangular in the cross section.
11. Guiding device according to one of the preceding claims, characterized in that at least some of the lateral guiding elements (13, 14) are disposed so as to be directly opposite one another along the conveying direction (7) and in a guiding manner act at the same height level on both sides the workpiece (3).
12. Guiding device according to one of the preceding claims, characterized in that the actuatable vertical and lateral guiding means (12, 22) have in each case one actuating apparatus (19, 29) .
13. Guiding device according to Claim 12, characterized in that the actuating apparatuses (19, 29) have actuating drives which are connected to an electronic controller.
14. Processing machine, in particular a woodworking machine, having a guiding device (1) for a workpiece (3), in particular a profile from a wooden material which is movable along a conveying direction (7), characterized in that the guiding device (1) is configured according to at least one of Claims 1 to 13.
15. Processing machine according to Claim 14, characterized in that the processing machine (2) has a processing device (8, 9), in particular a sanding device and/or a brush unit, in the region of the guide device (1).

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