EP0920954A2 - Method and apparatus for bevelling pieces of cut glass - Google Patents

Abstract

At least one machining tool is equipped with a pair of belt grinders (10,12) with grinding belts (26). The runs of the belts acting upon the glass panes (3) extend in planes which with the plane of the glass pane includes an acute angle and cross one another in the region of the pane's edge. At least one and preferably both belt grinders can be pivoted by an actuator (32,34) into a working position in which their belts are located at the edge of the pane.

Description

The invention relates to a method with the features of introductory part of claim 1. The invention relates to furthermore a device with which the method is carried out can be.

Glass panels are cut to the desired size by scratching and breaking Cut to size, which is usually on so-called "glass cutting tables" and these "break tables" assigned to them.

The glass panes obtained in this way have very sharp-edged, Burr edges, what for subsequent handling of the glass panes, for example when producing insulating glass panes is disadvantageous. On the one hand, there is a risk that the edges of the glass panes break out and on the other there is a not inconsiderable risk that someone will turn to the sharp edges of the glass panes injured by cutting. Those attacking at the edges of the glass panes are also subject Support and means of transport (e.g. conveyor rollers or Conveyor belts) through unprocessed edges of glass panes heavy wear.

The invention has for its object a method and a device for trimming the edges of glass panes To provide with which glass panes are processed in this way that their edges are no longer sharp, in particular have no burrs.

This problem is solved in the first place as far as the procedure is concerned Line with the features of the independent main process claim and as far as the device is concerned, primarily with the features of the independent main device claim.

Preferred and advantageous embodiments of the invention Method and the device according to the invention Subject of the subclaims.

Since in the method according to the invention used for trimming Editing tools on both edges of an edge attacking a pane of glass at the same time becomes opposed to one Working method where you only work on one edge of an edge, so trimmed and deburred, not only saved working time, but it is also achieved that on the glass pane no significant forces act transversely to their plane, so that holding the glass pane or controlled movement the same, if it is trimmed, possible with simple means is. Short cycle times are also achieved.

The method according to the invention can be done in different ways be carried out. So it is possible, for example, one after the other trimming all (four) edges of a glass pane on both sides, why the glass pane after trimming the edges of an edge, for example around a perpendicular to its plane Axis, is twisted until the next edge of the glass pane, the edges of which are to be trimmed in the processing position located.

The method according to the invention allows it in one embodiment also several edges of a pane of glass at the same time trimming what is particularly in rectangular or square Slices is preferred. For example, this is how it worked be that initially - at essentially for example vertically standing glass pane - the edges of the in Direction of movement front, vertical edge, then that of upper, horizontal edge, then that of the direction of movement rear, vertical edge and finally the edges of the the lower, horizontal edge of the glass pane.

It is also conceivable to work with trimming the edges of the lower, horizontal edge of the glass pane is started and then the one vertical edge, further the upper, horizontal margin and finally the second vertical Edge trimmed.

A further acceleration of the trimming of glass panes in the Area of the edges at their edges can be reached be provided that several processing points for trimming become. For example, with two processing points be worked in such a way that in a processing point the front vertical edge in a trimming tool and then worked on the rear, vertical edge of the glass pane and in a second processing station with two processing tools, for example, the edges at the same time the upper and lower, horizontal edge of the glass pane be trimmed.

A particularly efficient and fast working embodiment the trimming of glass panes according to the invention The procedure arises if the procedure is followed such that a (only) processing tool in a first processing point at the same time the vertical one at the back in the direction of movement Edge of a glass pane and the front one in the direction of movement Edge of a subsequent glass sheet is processed. Prefers then the first of the two panes of glass (i.e. the one whose rear, perpendicular edge in relation to the conveying direction has just been edited - its front edge has already been processed beforehand) to a second processing center, in the with two processing tools in a continuous process and essentially the top and bottom at the same time lower horizontal edge of the glass pane is trimmed. At This working technique becomes the glass pane that is in the first Processing point together with the previous glass pane in the area of your front, based on the direction of flow, vertical edge was processed in the first processing point moved on until the machining tool the first processing point is the one behind it in the direction of movement Edge is mapped and then paused until another Glass plate has been brought up, whereupon you, in relation to the direction of flow of the rear, vertical edge together with the front, vertical edge of the next pane of glass is trimmed.

Alternatively, this can also be done within the scope of the invention be that in a machining center at the same time initially the two vertical edges of a glass pane are trimmed, where, for example, one of the intended ones Grinding tools from the bottom up and the other from the top can move down and that after that the two horizontal edges, i.e. the lower and the upper horizontal Edge of the glass pane is trimmed at the same time in a continuous process become. This embodiment of the invention The process can be carried out in two processing points, with four processing tools, be carried out.

All embodiments of the inventive method will preferred, but not exclusively with during editing the edges of the glass panes perpendicular or essentially vertically aligned glass panes. The work with vertically aligned glass panes has the advantage that the method according to the invention and the intended one Device without problems in systems for the production of insulating glass panes, the practically exclusively with vertically aligned Working glass panes or insulating glass panes, can be integrated. It is then no longer necessary the glass panes, the edges of which according to the invention Process or in the device according to the invention are to tip over into a horizontal position when out Save for glass blanks (e.g. compartment trolley) removed to be according to the inventive method or in the device to be processed according to the invention. Also need the trimmed glass panes then no longer in the aligned perpendicular or essentially vertical if, for example, a glass plate washing machine be fed. Notwithstanding this is the invention Procedure also executable when the glass panes are horizontal are aligned. This can e.g. be beneficial if Panes of glass immediately after being placed on a glass cutting machine have been cut from glass panels, according to are trimmed according to the invention.

A suitable one for carrying out the method according to the invention Device works for example with (at least one) Machining tool, the belt grinding devices arranged crosswise owns that on both edges of an edge attack simultaneously around the edges of the edges of the glass sheet breaking, i.e. trimming and removing sharp burrs.

If the device according to the invention is a single machining tool with a pair of belt grinders, the four edges of the glass pane are processed one after the other, being the glass sheet after an edge has been machined is rotated through 90 ° and then through the pair of belt grinders the next edge is edited and so on until all (four) Edges of the glass pane have been processed.

This turning the glass pane by 90 ° (one to its level vertical axis) can be done by hand or with any trained turning device, e.g. a sucker, a couple by suction cups or a gripper that is on the edge of the glass pane attacks, take place.

In one embodiment, the device has machining tools with a pair of crosswise belt grinders, being a machining tool the lower, horizontal Edge of the insulating glass pane and the second processing tool that in the device (up and down) adjustable is mounted, the vertical edges of the glass sheet machined.

If the adjustable mounting tool is additional can be pivoted about an axis perpendicular to the glass plane it also for editing the edges at the top horizontal edge the glass pane can be used by the glass pane is moved under it.

In this embodiment of the device according to the invention there is the possibility to work so that the adjustable Machining tool, initially related to the direction of movement machined the front of the glass pane vertically, with the glass sheet standing still, followed by the lower processing tool the lower and the adjustable processing tool after pivoting the upper edge by 90 ° edit the glass pane, with the glass pane preferred is moved between the processing tools. Finally, the adjustable machining tool edits after swiveling again through 90 °, based on the conveying direction rear edge of the glass pane.

In principle, an embodiment of the invention Device with only one adjustable mounted to one for Glass plate plane vertical axis swiveling machining tool with a pair of intersecting belt grinders possible that all four edges of the Glass pane processed.

Furthermore, embodiments of the invention Device with more than two machining tools, for example an embodiment with four processing tools, possible, in which embodiment each processing tool machined only one edge of the glass sheet.

In a particularly preferred embodiment of the invention Two processing points are provided in the device, for example housed in a common housing are, in the first processing station a processing tool with a pair of belt grinders crossing each other is provided that up and along a guide rail is led to adjustable to vertical edges of glass panes trimmed. This is preferably vertically adjustable Processing tool of the first processing point in the area an interruption of the conveyor device provided in the device arranged so that it is on standby can be lowered below the level of the conveyor, so as not to hinder the transport of glass panes. In the second machining point are two machining tools with intersecting belt grinders provided, the one at the height of the conveyor works to the lower, horizontal edge and the second at an adjustable distance above the conveyor is arranged to the upper, horizontal Edge of a moving through between the machining tools Trimming glass pane.

The conveyor device is preferably in several sections divided, with each conveyor unit consisting of an endless conveyor belt, on which the glass panes stand with their lower edge, and two, in the area of the lower, horizontal edge endless attacking the glass panes from both sides Funding members exist. The attacking on the glass surfaces, opposing endless conveyor links, can to to achieve a good friction fit on the glass panes with Pressure jaws.

Additionally or alternatively, can be used for safe transport and the correct positioning of the glass panes in the device and for the safe transportation of the glass pane while it is processed by trimming, a driving device provided that attacks on the glass panes. For example this driving device is one with negative pressure loaded device, for example a vacuum suction device, which is driven in the device in the direction of movement, displaceable is.

Fig. 1 in Seitenansicht schematisch eine Vorrichtung zum Säumen von Glasscheiben;

Fig. 2 die Vorrichtung von Fig. 1 von rechts der Fig. 1 aus gesehen, wobei einige Bestandteile der Vorrichtung nicht dargestellt sind;

Fig. 3 in Ansicht eine Vorrichtung mit zwei Bearbeitungsstellen zum Besäumen von Glasscheiben;

Fig. 4 in Schrägansicht das Bearbeitungswerkzeug (Schleifkopf) der ersten Bearbeitungsstelle;

Fig. 5 eine Draufsicht auf das Bearbeitungswerkzeug von Fig. 4;

Fig. 6 in Schrägansicht die in der zweiten Bearbeitungsstelle angeordneten Bearbeitungswerkzeuge (Schleifköpfe);

Fig. 7 in Seitenansicht die Bearbeitungswerkzeuge von Fig. 6; und

Fig. 8 in Schrägansicht ein Ausführungsbeispiel für eine am unteren Rand einer zu besäumenden Glasscheibe angreifenden Transporteinheit.

Further details and features as well as advantages of the method according to the invention and the device according to the invention result from the following description of exemplary embodiments of the invention. It shows:

Figure 1 shows a schematic side view of a device for seaming glass panes.

FIG. 2 shows the device of FIG. 1 seen from the right of FIG. 1, some components of the device not being shown;

3 shows a view of a device with two processing stations for trimming glass panes;

4 shows an oblique view of the processing tool (grinding head) of the first processing point;

FIG. 5 is a top view of the processing tool of FIG. 4;

6 shows an oblique view of the processing tools (grinding heads) arranged in the second processing point;

Fig. 7 in side view of the machining tools of Fig. 6; and

Fig. 8 in an oblique view an embodiment of a transport unit acting on the lower edge of a glass pane to be trimmed.

The embodiment shown in FIGS. 1 and 2 has one Frame 1 on which a support wall 2 for a to be machined Glass pane 3 is mounted. The support wall 2 is in the embodiment inclined backwards to the vertical so that a Glass pane 3 can be transported leaning against it. For the transport of the glass sheet 3 and for supporting the same from below is in the area of the lower edge of the retaining wall 2 a row of conveyor rollers 4 or a similar conveyor device, e.g. an optionally divided conveyor belt is provided. On the support wall 2, the glass sheet 3 is replaced by several freely rotatable support rollers 5 guided, one row of support rollers 6 between the conveyor rollers 4 and the lower one Edge of the support wall 2 is provided. So is the glass pane 3 guided safely, especially at its lower edge. Instead of the described support wall 2 can also be a roller or roller field or an air cushion wall can be provided around glass panes 3 to support sideways.

At any place on the lower edge of the retaining wall 2 is a machining tool (grinding head) with a Pair of belt sanders 10 and 12 are provided. The belt sander 10 and 12 are in the machine frame 1 behind the retaining wall 2 lying axes 14 and 16 pivotable (arrows 18 and 20) stored. Each belt sander 10, 12 has two deflection rollers 22 and 24 for an endless sanding belt 26. Between the Dreaming of the grinding belt 26 is a pressure medium cylinder 30 added, which is pivotally supported on the bearings 14 and 16 is and which carries the pulley 22 so that the Sanding belts 26 by acting on the pressure medium cylinder 30 can be excited.

To pivot the pressure medium cylinder 30 and thus the Belt grinder 10 and 12 to move them from a standby position their active position in which their grinding belts 26 on the lower horizontal Edge of the glass sheet 3, i.e. the edge that on the Conveyor rollers 4 stands up, attack each of the pressure medium cylinders 30 an actuating cylinder supported in the machine frame 1 32 and 34 assigned. This actuation cylinder 32 and 34 are in the embodiment shown in FIG. 1 on an arm 36 which is fastened in the machine frame 1, supported and shown only schematically. It is from Fig. 1st recognizable that the grinding belts 26 aligned in their operative position are that their on the bottom of the glass pane 3 acting dreams with each other an angle of about 90 ° include, so cross each other.

One of the deflection rollers 22, 24, preferably the deflection rollers 24 in the area of bearings 14 and 16 in the machine frame 1, a drive motor, not shown, is assigned to the Sanding belts 26 when using the trimming device the edges of edges of glass sheets 3 to burr from them to remove, to drive. The sanding belts 26 preferably driven so that they are in the area in which they attack at the bottom of the glass pane 3, in opposite Directions run, especially in the representation of Fig. 1 at their crossing point, in which the edge of the to be processed Glass pane 3 is added to run towards each other.

As shown in FIG. 2, a driving device 40 for the processing glass pane 3 may be provided. This take-along device 40 is a suction device in the simplest embodiment, which can be pressurized and thereby from the operating side of the device (right in Fig. 1) facing away, i.e. rear surface of the glass sheet to be processed 3 creates. The suction cup of the driving device 40 is by means not shown in the machine frame 1 displaceable (arrow 42) so that it not only the glass pane 3 can take along, so the transport of the glass sheet 3 through the Conveyor rollers 4 which engage at the bottom of the glass pane 3 and on which it stands, supports, but also by stopping the drive means for the suction cup 3 stands still, for example when Editing the edges of the vertical edges of the glass pane 3 is needed.

It can be seen that with that shown in Figs Device if this is just a machining tool with a Has pair of belt grinders 10, 12, which in the area of lower edge of the support wall 2 are arranged, the glass sheet 3 in the continuous process only in the area of their lower, on the support rollers 4 overlying edge can be edited. As soon as an edge is finished, the glass pane 3 in this embodiment either by hand or with the help one turning device rotated 90 °, so that the next, too processing edge stands up on the conveyor rollers 4 and processed can be. This continues until all edges the glass pane 3 have been trimmed.

If the twisting of the glass pane 3 is to be avoided, can do more than one machining tool in the device according to the invention with a pair of belt sanders 10, 12 be provided. This is shown, for example, in Fig. 2, where another machining tool with a pair of belt grinders 10, 12 is provided on a on a guide rail 50 sliding carriage 60 is mounted. This editing tool with a pair of belt grinders 10, 12 can have vertical edges of a glass pane to be machined 3 can be assigned to trim them. In addition may be the pair of belt grinders disposed on the carriage 60 10, 12 around a perpendicular to the plane of the support wall 2 and thus Axis aligned perpendicular to the plane of the glass pane 3 be pivotable. This editing tool with a pair of belt grinders 10, 12 can then be aligned that the belt grinder 10, 12 the upper horizontal edge of the Glass pane can edit while the glass pane 3 under is moved through it. With this way of working, it is also possible the lower horizontal and the upper horizontal Editing edge of a glass sheet 3 at the same time.

To wear the grinding belts 26 of the belt grinder 10, 12th to compensate for the pressure with which the belt grinder 10, 12 applied to the edge of the glass sheet 3 to be processed will be increased. Alternatively or additionally, the Circulation speed of the grinding belts 26 can be increased. Of further, if necessary, in addition to one or both aforementioned measures the relative speed between the Belt grinders 10, 12 and the glass pane 3 are reduced, to compensate for the wear of the sanding belts 26.

In any case, nozzle arrangements can be provided from which a trimming fluid to the Sanding belts 26 and / or the edge just machined Glass pane 3 can be injected.

The device for trimming edges shown in FIG the edges of glass panes has a housing 60 in which below a conveyor device divided into four transport units 62 61 is provided. In a first processing point 63, in which two of the four transport units 62 are arranged are a grinding head 64 as a processing tool two intersecting belt grinders 10 and 12 are provided, the on a vertical guide rail 65, perpendicular to Direction of passage (arrow 66), that is to say in FIG. 3 Embodiment is guided up and down movable.

In the second processing point 70, which is in the area of the Direction of travel seen (arrow 66), last transport unit 62 is provided, there are two as machining tools Grinding heads 71, 72 are provided, which are intended on the one hand the bottom, horizontal margin and, on the other hand, the top, edit horizontal edge of a glass sheet 3.

Details of the construction of the in the first processing point 63 provided, up and down adjustable grinding head 64 are shown in Figs. 4 and 5. It can be seen there that the grinding belts 26 of the belt grinder 10, 12 each have a drive motor 16, 14 is associated with one of the deflecting rollers 24 is coupled for the grinding belts 26.

5 shows how the two of the Edges of mutually facing vertical edges at the same time processed glass panes 3 assigned to the grinding head 64 are, as can be seen from FIG. 3, by reaching through the free space 67 between the two glass panes 3 Sanding belts 26 moved up and the edges of the rear, perpendicular to the direction of flow Edge 68 of a glass sheet 3 and at the same time the edges of the front, perpendicular to the direction of flow Edged edge of the subsequent glass sheet 3. The mutual Assignment of the two glass sheets 3 and the grinding head 64 is shown in FIGS. 4 and 5.

For guiding the grinding head 64 along the glass panes 3 3 rollers 75 can be placed on the glass panes Held on supports 76 so as to be freely rotatable about horizontal axes are, which in turn operated by the pressure medium cylinders 77 can be.

When the vertical grinding head 64 is in its standby position, So below that of the transport units 62 formed conveyor track 61, the glass panes 3 of support rollers 78 freely rotatable about vertical axes on one side and on the other side by an endless guide belt 79, the roller rotatable about two vertical axes 80 is laid out.

In Fig. 4 it is also shown that the endless sanding belts 26 in the area in which they meet the vertical edges 68, 69 of the attack processing glass panes 3, from the inside by support rollers 81 are supported so that the required contact pressure even without excessive tensioning of the grinding belts 26 with the help of the pressure medium cylinder 30, which on the deflection rollers 24 attack, can be applied.

6 and 7 show the two in the second processing point 70 grinding heads provided as processing tools 71, 72, which simultaneously in the continuous process top, horizontal edge and bottom, horizontal edge edit a glass pane 3 to trim its edges, with the aim of burrs and the like. to remove.

The belt grinder 10, 12 of the lower grinding head 71 in an interruption in the last transport unit 62 recorded, as shown in particular in FIG. 6.

The upper grinding head 72, i.e. that of the grinding heads, whose belt sander 10, 12 the upper, horizontal edge of the Glass pane 3 are assigned is on a vertical guide rail 89 adjustable up and down to guide him accordingly to be able to align the height of the glass pane 3. So as for the one provided in the first processing point 63 Grinding head 64 that moves vertically on the guide rail 65 is, if he edged edges of glass panes 3, is used for Moving the grinding head 72, a drive motor 90, the Upper end of the guide rail 89 is arranged.

The two intersecting belt grinders 10, 12 of the upper Grinding head 72 are as shown in Fig. 6, using Pressure medium motors 32, 34 in their at the top of the glass sheet 3 adjacent active position adjustable, this Pressure medium motors 32, 34 via levers on the supports for the Attack sanding belts 26 and clamping cylinders 30. This is seen in Fig. 7.

6 and 7, nozzle arrangements 95 can still be seen, with which in the places where the grinding belts 26 attack the edges of the glass panes 3, supporting the trimming (Flushing) liquid can be supplied. Such Nozzles are also in the vertically up and down adjustable Grinding head 64 of the first processing point 63 is provided. The nozzles of the nozzle arrangements 95 are preferably aligned such that that the (rinsing) liquid is approximately parallel to the past the respective nozzle arrangement 95 Sanding belts 26 and in the direction of their movement exits the nozzles. This way the (rinsing) liquid gets safely in the area where the belt grinder 10, 12 the edges of the Process the edges of the glass panes 3.

In the example of a transport unit shown in FIG. 8 62, the transport unit 62 has an endless conveyor belt 100 on which the lower, horizontal edge of the to be transported or to be trimmed glass pane 3. Furthermore two endless conveyor links 101, 102 are provided which are connected to the both side surfaces in the area of the edge of the glass pane 3 attack. One of the two endless conveyor links 101 is in the Frame 103 of the transport unit 62 with the aid of a pressure medium motor 104 and a lever arrangement 105 adjustable, so that the distance between the two endless conveyor links 101, 102, which clamp the glass pane 3 between them, adjusted to the respective glass thickness and the required Contact pressure for the non-slip conveying of glass panes 3 can be applied. The endless conveyor links are preferred 101, 102 equipped with pressure jaws on the glass panes 3 Attack by friction. The drive of all conveyor belts 100, 101, 102 is carried out by a common drive motor 110 and a transmission 106 through which the outlet side Deflection rollers 107, 108 of the endless conveyor belt 100 and the two lateral endless conveyor members 101, 102 driven become.

If the grinding heads 64, 70, 71 or their belt grinders 10, 12 nozzle assemblies 95 for applying the hem work it is recommended to use supporting fluids itself, the grinding belts 26 in the region of the deflecting rollers 22, 24 cover with fenders 96 to prevent excessive spraying to prevent liquid. Especially when nozzle arrangements 95 are provided, the housing 60, the Interior accessible through doors is an advantage.

In all embodiments of the method according to the invention, in particular the described embodiments, and likewise in all embodiments of the device according to the invention, in particular the described embodiments, is on Start and end of trimming the edges on an edge a glass pane preferably worked as follows:

At the beginning of the movement of a sheet of glass relative to at least a grinding head with a pair of belt grinders, so if the glass pane from a standstill to the transport speed is accelerated, the sanding belts the belt sander with during the acceleration phase of the Glass pane increasing contact pressure to be processed Pressed on the edge of the glass pane. Additionally or alternatively can change the speed at which the sanding belts of the Belt grinders are moved during the acceleration phase to the speed at which the belt grinders of the belt grinder moved during trimming, increased.

When the belt sander reaches the end of the to be machined Approach the edge of a sheet of glass while reducing the speed with which the glass pane relative to the grinding head or Grinding heads is moved, the speed can be reduced, with which the sanding belts of the belt grinder are moved are reduced and / or the contact pressure with which the Sanding belts against the edges of the machined edge of the Glass pane can be pressed, reduced.

These measures ensure that, on the one hand, the grinding belts not excessive at the beginning and end of a trimming process strained and damage to the processed glass panes be avoided.

The described change in the contact pressure of the sanding belts the belt sander and / or the speed at which the Sanding belts of the belt grinder are moved, i.e. increasing the contact pressure and / or the speed of the Sanding belts at the beginning of a trimming process and reducing the contact pressure and / or the speed of the Sanding belts at the end of a trimming process are preferred also used when a grinding head runs along at least an edge of at least one sheet of glass that is transverse to Direction of transport of the glass pane aligned, in particular is perpendicular or essentially perpendicular, is moved, such as this in the processing point 63 with the Machining tool 64 is the case.

The rinsing liquid dispensed from the nozzle assemblies 95 is water in the simplest case. The supply of rinsing liquid especially of water is particularly recommended if diamond grinding belts are used as grinding belts. When using abrasive belts with silicon carbide or some other abrasive material it is recommended to add rinsing liquid but not absolutely necessary.

In summary, an embodiment of the invention can be represented as follows, for example:

A device for trimming glass panes 3 has at least a grinding head as a processing tool from two intersecting belt grinders 10, 12, the at the same time on the edges of an edge of the glass pane 3 attack these edges hemming. The belt grinders 10, 12 are pivoted in the machine frame 1, so that they are out a standby in their on the edges of an edge the glass pane 3, for example for removing Ridges are trimmed, can be created. As a result of that the belt grinder 10, 12 are arranged adjustable their position can be adjusted to glass panes 3 of different thicknesses. If several grinding heads are provided, glass panes can be used 3 can be processed simultaneously on several edges.

Claims (45)

Process for preparing glass blanks for the further handling, especially for the manufacture of flat glass panes or insulating glass panes, thereby characterized in that the two edges of each edge are one Glass pane for removing burrs and the like be trimmed trimming the two edges of each edge a glass sheet occurs simultaneously, and that the glass sheet vertically or essentially vertically oriented is. A method according to claim 1, characterized in that successively all the edges of the glass pane in the area of their Edges are processed. A method according to claim 1, characterized in that the edges of opposite edges of a sheet of glass can be edited simultaneously. A method according to claim 3, characterized in that the edges of opposite edges of the glass panes are edited while the glass pane is relative to between machining tools that grip the edges is moved. A method according to claim 4, characterized in that the machined edges in the direction of movement of the Glass pane, especially horizontally, run. A method according to claim 3, characterized in that the machined edges transversely to the transport direction of the Panes of glass, especially perpendicular. A method according to claim 6, characterized in that the edges of glass panes are machined while the glass panes stand still. A method according to claim 6 or 7, characterized in that machined the vertical edges of a sheet of glass by using two processing tools while the glass pane is stationary moved along the vertical edges become. A method according to claim 8 or 9, characterized in that the machining tools are moving from bottom to top become. Method according to one of claims 1 to 7, characterized in that that the edges are adjacent, across for the transport direction of the glass panes especially vertical edges of two side by side in one level glass panes with a processing tool can be edited simultaneously. A method according to claim 10, characterized in that the two edges are machined by a machining tool in the space between the glass panes is moved. A method according to claim 11, characterized in that the edges are substantially perpendicular and that the editing tool is between them from moved upwards while the edges of the edges be trimmed. Method according to one of claims 1 to 12, characterized characterized in that the edges of the edges of the glass sheet processed by belt sander with endless sanding belts become. A method according to claim 13, characterized in that the levels in which the edges of the edges dreams of grinding belts attacking the glass pane run, cross in the area of the plane of the glass pane. A method according to claim 13 or 14, characterized in that the dreams attacking the edges of the Grinding belts of a processing tool in the direction of movement this dream of the sanding belts seen before Places in which they are on the edges of the glass sheet attack, move on each other. Method according to one of claims 1 to 15, characterized characterized in that in a first processing point with the help of a processing tool at a distance from each other adjacent edges of two arranged in one plane Glass panes can be processed at the same time, and that in a second processing point with the help of two machining tools simultaneously two each other machined opposite edges of a glass sheet become. Method according to one of claims 1 to 16, characterized characterized in that at the start of moving a sheet of glass the speed relative to the belt sander, with which the sanding belts of the belt grinder are moved and / or the pressure with which the sanding belts pressed against the edges of an edge of a glass sheet be increased while the relative speed the movement of the glass pane relative to the belt grinder is enlarged. Method according to one of claims 1 to 17, characterized characterized in that at the end of moving a sheet of glass relative to the belt grinder the speed with which moves the sanding belts of the belt grinders, and / or the pressure with which the sanding belts are attached to the Edges of an edge of a sheet of glass are pressed is reduced while the relative speed of the Movement of the glass pane relative to the belt grinder decreases. Method according to one of claims 1 to 18, characterized characterized in that as grinding belts diamond grinding belts or silicon carbide abrasive belts can be used. A method according to claim 19, characterized in that a liquid for rinsing the diamond grinding belts and / or cooling is supplied in the area in which the Sanding belts on the edges of the edges of a glass pane attack. A method according to claim 20, characterized in that water is used as the rinsing and / or cooling liquid. Device for trimming the edges of plate-shaped Objects, in particular glass panes, in particular for carrying out the method according to one of claims 1 to 21, characterized in that at least one processing tool (64, 70, 71) with a pair of belt grinders (10, 12) provided with grinding belts (26) is that the dreams attacking the glass panes (3) the grinding belts (26) the belt grinder (10, 12) in with the plane of the glass sheet (3) to be machined acute angles enclosing and each other in the area of the edge levels crossing the glass panel (3). Apparatus according to claim 22, characterized in that the belt grinder (10, 12) are pivotally mounted and by a motor (32, 34), preferably a pressure medium motor, can be pivoted into a working position in which their sanding belts (26) the edge to be machined Glass pane (3) are assigned. Device according to claim 22 or 23, characterized in that that the pressure with which the sanding belts (26) are placed on the edge of the glass pane (3), adjustable is. Device according to one of claims 22 to 24, characterized characterized in that the speed at which the Grinding belts (26) can be moved, is adjustable. Device according to one of claims 22 to 25, characterized characterized in that the belt grinder (10, 12) of at least a processing tool (71) in the area of a Conveying device (4, 6; 61) for the to be processed Glass pane (3) are arranged and that the edge dreams of the grinding belts assigned to the glass pane (3) (26) each other essentially at the level of the conveyor (4, 6; 61) cross. Device according to one of claims 22 to 26, characterized characterized in that the grinding belts (26) on the Crossing area in which the edge of the Glass pane (3) is arranged to move. Device according to one of claims 22 to 27, characterized characterized in that at least one processing tool with a pair of belt sanders (10, 12) in the machine frame (1) by one perpendicular to the plane of the glass pane (3) Rotatable axis and parallel to the plane of the glass pane (3) is mounted adjustable up and down. Device according to one of claims 22 to 28, characterized characterized in that two processing tools, each with a pair of belt grinders (10, 12) are provided, one of which is the bottom horizontal edge of the one to be machined Glass pane (3) is assigned and a second in Machine frame (1) is slidably guided up and down. Device according to one of claims 22 to 29, characterized characterized in that a processing tool with a Pair of belt grinders (10, 12) is provided, which in Machine frame (1) is guided up and down adjustable and is assigned to the upper edge of a glass pane (3). Device according to one of claims 22 to 30, characterized characterized in that the belt grinders (10, 12) nozzle arrangements (95), of which one is the Trimming the edges of the edges of the glass pane (3) supporting Are loaded with liquid. Apparatus according to claim 31, characterized in that the nozzles of the nozzle assembly (95) in the direction of movement the adjacent dreams of the grinding belts (26) the belt sander (10, 12) are aligned. Device according to one of claims 22 to 32, characterized characterized in that between the deflecting rollers (22, 24) for the grinding belts (26) of the belt grinder (10, 12), in the area where the sanding belts (26) on the edges attack the glass pane (3), support rollers (81) are provided are. Device according to one of claims 22 to 33, characterized characterized in that the belt grinder (10, 12) fenders (96) wear concentric with the pulleys (22, 24) are curved. Device according to one of claims 22 to 34, characterized characterized in that a grinding head (64) with a pair of belt grinders (10, 12) is provided, which consists of a Ready position below the conveyor (61) is vertically up and down adjustable. Apparatus according to claim 35, characterized in that on the grinding head (64) guide rollers (78) and / or Endless guide bands (79) are provided, which in in Ready position arranged grinding head (64) in Area of the conveyor (61) are arranged. Apparatus according to claim 35 or 36, characterized in that on the up and down movable grinding head (64) guide rollers resting on the edges of glass panes (3) (75) are provided. Device according to claim 37, characterized in that the guide rollers (75) on supports (76) around horizontal Axles are freely rotatable, with the carrier transverse are adjustable to the level of the glass panes (3). Device according to one of claims 22 to 38, characterized characterized in that the device with a housing (60) is equipped in which at least one grinding head (64, 70, 71) and a conveyor (61) for the Glass panes (3) is arranged. Device according to one of claims 22 to 39, characterized characterized in that two processing points (63, 70) are provided, being in the first processing point (63) transverse to the direction of flow (arrow 66) Edges (68, 69) and in a second processing point (70) parallel to the direction of flow (arrow 66) Edges of glass panes (3) are trimmed. Device according to claim 40, characterized in that in the first processing point (63) transversely to the direction of flow (66) adjustable grinding head (64) is provided is. Device according to claim 40 or 41, characterized in that that in the second processing point (70) with Two grinding heads (71, 72) are provided at a distance from one another are, one of which (71) in the area of the conveyor (61) and a second (72) at a distance from the conveyor (61) is arranged to be adjustable transversely to this. Device according to one of claims 39 to 42, characterized characterized in that the conveyor (61) in several Transport units (62) is divided. Device according to claim 43, characterized in that each transport unit (62) supports the glass panes (3) Endless conveyor belt (100) and two on the surfaces the endless conveyor elements attacking the glass panes (3) (106). Device according to claim 44, characterized in that the endless conveyor members (106) with the frictional engagement the pressure on the glass panes (3) are.

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