SK50182012A3 - Method of production of panel unit from glass plate and frame and device for carrying out this method - Google Patents

Abstract

The method involves moving the mold portions (17,18) of injection mold (16) apart from each other. The glass sheet (12) is provided on the surface regions (26,34) of the mold portions. The pressure in the supply line (44) in which flowable material is flowed into the recesses (24,32) is maintained during shrinkage phase of flowable material. The injection mold is opened and resulting glass pane unit (11) of the injection mold is removed after cooling and solidifying the flowable material such that the auxiliary frame (39) of the glass sheet is removed. An independent claim is included for device for producing glass pane unit.

Description

A method of manufacturing a sheet unit from a glass pane and a frame and apparatus therefor

Technical field

The present invention relates to a method for producing a sheet unit from a glass pane and a frame, as well as to an apparatus for this method.

BACKGROUND OF THE INVENTION i

In the manufacture of a sheet-glass unit and a frame by injection molding, the sheet is inserted into an injection mold comprising at least two mold parts. One mold part is provided on its inner side with a flat region which forms a first groove which is adapted to the first profile section of the frame profile associated therewith. One mold part is provided to said surface area toward the center of the pane with an adjacent second surface area which is adapted to the associated edge area of the glass pane. The second mold part is provided on its inside with a surface area which is also designed as a groove, which is, however, adapted to the associated second profile section of the frame profile. Also, the second mold part is provided with a second sheet region which is also designed as a groove, which is adjacent to the center of the sheet with its groove and is adapted to the edge region of the glass sheet facing it. One of the two mold parts is provided with at least one material supply line for the frame profile to which the pressing device is connected.

After pressing the sheet onto one of the two mold parts, the mold is closed. Then, the pane lies on both parts of the mold in each case on a second surface area which is adjacent to the respective groove. The frame material is brought into a liquid state and injected into the two frame profile grooves by means of a feed line until the grooves are completely filled. After the injection material has cooled and solidified, the injection mold is opened and the resulting sheet unit is removed from the injection mold.

In this method of forming the frame, both parts of the mold, each having a second surface area, cooperate on the one hand and the glass sheet on the other hand. The mold parts are generally of metal. They are possible to manufacture relatively precisely with respect to the frame shaping of the surface areas involved and also have a very high dimensional stability. Glass panes, on the other hand, are less dimensionally accurate since they are made of glass melt and are brought to the desired shape in a still deformable state. These glass panes exhibit significant shape deviations in terms of both their basic plan and their spatial shaping. This includes deviations in the thickness of the sheet as well as deviations in the spatial progression of the edge region of the sheet to which the mold parts adjoin. Deviations of the contour line of the sheet from the desired shape are compensated by the frame material. In those surface regions of the mold parts to which the edge regions of the glass pane are to be adjoined, the deviations of the glass pane from the desired shape result in a more or less large gap between the surface areas of the mold parts concerned and their associated edge region of the glass pane. through which parts of the frame material can protrude through the frame profile and form so-called. overflow.

In the case of a built-in sheet unit, the bolts lie on the inside of the sheet unit, mostly in the area of the body parts, so that they no longer interfere. On the outside of the sheet unit, the view side, the material rolls are generally visible and thus undesirable. They must therefore be manually removed after the board unit has been manufactured. This entails considerable work and also entails the risk that the tools used will break or even damage the glass pane.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for manufacturing a sheet unit from a glass sheet and a frame in an injection mold, in which material flow is prevented at least on the face of the sheet.

SUMMARY OF THE INVENTION

Said drawbacks are eliminated by the method (claim 1), wherein the second mold part is provided on its inside with a third surface area which is designed as a third groove to form a subframe which is at least partially situated in the same plan area in which it is in the first a second surface region for the apparent edge region of the glass pane situated therebetween, and also due to the fact that the frame material supply conduit first extends into this third groove and is provided from the third groove extending to the first and second grooves extending through the connecting conduit, and by providing a valve at the transition from the third groove to the connecting pipe, and by keeping the valve initially closed until a predetermined filling level is reached in the third groove, the subframe presses the glass pane against the second surface area the opposite part of the mold already when the material is 1 on the frame or main frame injected into the first and second grooves, so that the subframe-induced elastic deformation of the glass pane reduces the gaps between it and the mold part to such an extent that the frame or main frame material no longer forms . After the main frame and subframe material has cooled and solidified, the injection mold can be opened and the sheet unit as well as the subframe removed from the injection mold. The subframe material may be returned to the stock of material for further production of both frames.

According to a further embodiment (claim 2), the second mold part is also provided on its inside with a third surface area which is designed as a third groove to form a subframe which is at least partially situated in the same plan area in which it is situated in the first mold part a second surface region facing the edge of the pane of glass, and in that the second mold part is further provided with at least one groove leading to the first subframe material feed line and a second groove leading the second main frame material feed line; to which a pressing device is always connected, and in that, in the first filling phase, the material for the subframe in the liquid state is injected into the third recess through the first inlet pipe until a predetermined filling level is reached and in the subsequent second phase the filling is further injected into the third tube While the injection of material for the main frame in the liquid state by the second supply line into the first and second grooves begins during this time, it is achieved that the sub-frame presses the glass sheet against the second surface area of the opposite mold part when the material for the main the frame is injected into the first and second grooves, so that the subframe-induced elastic deformation of the glass sheet will reduce the gap between it and the mold part to such an extent that the frame or main frame material in the visible area of the sheet unit for the main frame through the second supply line, further injected into the first and second grooves until these grooves are also completely filled.

After the injection materials have cooled and solidified, the injection mold is opened and the sheet unit is removed from the injection mold. The sub-frame is removed from the glass pane and its material returns to the sub-frame material supply. Since the subframe material is separate from the mainframe material, the subframe material may preferably be a material that does not have to meet the high requirements for the mainframe material.

According to a further embodiment (claim 3), the second mold part is provided on its inner side with a third surface area which is formed as a third groove for a pressure body of a closed pressure system which is at least partially situated in the same plan area in which it is in the first mold part a second surface area facing the peripheral region of the glass pane facing therebetween, and by providing a first and a second groove leading a material supply pipe to the frame material to which the pressing device is connected, and by attaching to the material pipe supply pipe one side of the pressure transducer, on the other side of which a pressure line for a closed pressure system is connected, and a throttling point is provided in the frame material supply line downstream of the pressure transducer and before the outlet into the first and second grooves, injected into the supply line, i in the first filling phase, the effluent material first enters the pressure transducer and, in the subsequent second filling stage, it reaches the throttling point in front of the first and second frame grooves, thereby increasing the supply line pressure upstream of the throttling point and transferring this pressure to the closed a pressure system, as a result of which the pressure body presses the glass sheet against the second surface area of the opposite mold part, i.e. the first mold part, while the frame material is further injected through the inlet ducts into the first and second grooves until they are completely filled; The elastic deformation of the glass sheet caused by the pressure body will reduce the gaps between it and the mold part, preferably the first mold part, to such an extent that the frame material in the visible region of the sheet unit no longer makes any splits. After the frame material has cooled and solidified, the injection mold is opened and the sheet unit is removed from the injection mold.

According to a further embodiment (claim 4), the second mold part is provided on its inner side with a third surface area which forms a third groove for accommodating a pressure body of the closed pressure system which is at least partially situated in the same plan area in which it is situated in the first mold part a second surface region for the edge region of the glass pane facing it, and by being present at the first and second grooves in the supply pipe for the frame material to which a pressing device is connected which is provided with a hydraulic piston drive coupled with a closed pressure system, it is achieved that when the liquid material is injected into the first and second grooves, the pressure system with the pressure body by means of a hydraulic piston drive is first brought under pressure so that the pressure body presses the glass sheet against the second surface area of the first mold part, by means of a pressing device, further injected into the first and second grooves until they are completely filled, whereby the pressure-induced elastic deformation of the glass sheet reduces the gaps between it and the mold part to such an extent that the frame material in the visible region of the sheet unit no longer forms any splices. After the frame material has cooled and solidified, the injection mold is opened and the sheet unit is removed from the injection mold.

When the method according to claim 1 or 2 is further carried out according to claim 5, a particularly favorable time-to-time ratio between the first and second filling phases is achieved and the cycle time is thereby optimized.

When the method according to any one of claims 1 to 4 is further carried out according to claim 6, a particularly good adhesion between the sheet and the shaped frame is achieved.

Another object of the present invention is to provide a device by which the method according to any one of claims 1 to 4 can be carried out particularly advantageously. This object is solved by the apparatus according to the individual claims 7 to 10 with corresponding assignment to the method claims.

According to a further embodiment (claim 7) in addition to the basic features known from the prior art, with a first surface area with a groove for the respective profile section of the frame and an adjacent second surface area with a bearing surface for the adjacent edge region of the glass pane, a third surface region present on the inside thereof, which is designed as a subframe groove, which is at least partially situated in the same plan view area in which a second surface region for the edge of the glass pane facing it is situated in the first mold part; that the second mold part is additionally provided with at least one supply pipe for the frame profile leading to the third groove and in that it is also present from the third groove extending from the third groove and the first and second groove connecting connecting pipes and in the second mold part at the transition from the third groove to the connecting a valve body disposed between the closed position and the open position, and by injecting pressure to the material of the frame forming the press device to the third groove leading the inlet pipe, it is achieved that at the beginning of the working cycle the frame material is in the liquid state, first injected into the third groove up to a certain degree of filling, before the valve body releases the transition from the third groove to the connecting pipe and thus to the first and second frame grooves, so that on one side The glass sheet is increasingly pressing the glass sheet against the abutment surface of the opposite mold part, to the extent that the highest degree of filling is reached in the third groove, and by further supplying the liquid material to the first and second grooves these gradually fill completely and thereby complete the frame. In this case, the glass pane is pressed against its bearing surface in the opposite mold part, i.e., the first mold part, by the pressing force of the subframe so that it deforms elastically and abuts against its bearing surface in the opposite mold part and again molds reduced to such an extent that a visible roll of the frame material is prevented in the outer region.

According to a further embodiment (claim 8), in the second mold part, a third surface area is present on its inner side, which is designed as a subframe groove which is at least partially situated in the same plan area in which the second surface area is situated in the first mold part an edge region of the glass sheet facing towards it and additionally in that the second mold part is additionally provided with at least one groove leading to the first subframe material feed line and present to the first and second grooves leading the second supply line main frame material pipe, and additionally, since a pressing device is connected to both the first subframe material feed pipe and the second main frame material feed pipe, it is achieved that at the beginning of the working cycle the material for subframe injected into the third groove; and that only then the material on the main frame is injected into the first and second grooves, while the material on the subframe is further injected into the third groove until it is substantially or completely filled, so that the subframe presses the pane against its bearing surface in the opposite part of the mold so strongly that it elastically deforms and abuts its abutment surface in the opposite mold part, and thus the shape deviations of the sheet relative to the first mold part are reduced to such an extent that the visible region of the frame material is prevented in the outer region.

According to a further embodiment (claim 9), the second mold part is provided on its inner side with a third surface area which forms a third groove for the pressure body of the closed pressure system which is at least partially situated in the same plan area in which the second mold part is situated a surface region for the edge region of the glass pane facing it, and in that the first mold part is additionally provided with at least one of a first and a second groove extending through a supply pipe for the frame material to which the pressing device is connected, and a side of the pressure transducer is connected to the frame material supply line on the other side of which a pressure line for a closed pressure system is connected and by having a downstream pressure transducer in the frame material supply line and before opening into the first groove and into the other the grooves arranged throttling point are reached firstly, when the frame material is injected into the supply line, the liquid material in the first filling stage first enters the pressure transducer and the subsequent second filling stage up to the throttling point in front of the first and second grooves, thereby increasing the supply line pressure and The pressure transducer is transferred to a closed pressure system, whereby the pressure body presses the glass sheet against the second surface area of the opposite mold portion, while the frame material is further injected into the first and second grooves through the feed line until they are fully filled, The body-induced elastic deformation of the glass sheet will reduce the slits between it and the mold part to such an extent that the frame material in the visible region of the sheet unit no longer forms any snaps.

According to a further embodiment (claim 10), the second mold part is provided on its inner side with a third surface region which is designed as a groove for a pressure body which is at least partially situated in the same plan area in which the second surface region is situated in the first mold part for the edge region of the glass pane facing it, and in that the first mold part is additionally provided with at least one of a first and a second groove extending through a supply pipe for the frame material to which a pressing device is connected which is equipped with a hydraulic piston drive. coupled with the closed pressure system, it is achieved that at the beginning of the injection of the liquid material into the first and second grooves, the pressure system with the pressure body by means of a hydraulic piston drive is pressurized so that the pressure body presses the glass pane against the second surface area of the first mold part; co t the spilled material is further injected into the first and second grooves by means of a pressing device until these are completely filled. The glass pane is pressed against its abutment face in the opposite mold part so strongly that it deforms elastically and abuts on its abutment surface, thereby reducing the shape deviations of the pane relative to the first mold part so as to prevent the visible region from being visible. because the frame material.

If the device according to claim 9 or claim 10 is implemented according to claim 11, the volume changes of the pressure medium of the closed pressure system due to temperature changes can be easily compensated so that after working breaks the same pressure ratios prevail in the pressure system.

If the device according to claim 10 is implemented according to claim 12, different working media can be used in the closed pressure system and in the hydraulic piston drive of the pressing device, which can be more easily adapted to the requirements of the individual parts of the device.

If the device according to claim 10 is implemented according to claim 13, different pressures can be operated on the one hand in the closed pressure system and on the other hand in the hydraulic piston drive of the pressing device.

If the device according to claim 10 is implemented according to claim 14, the hydraulic piston drive of the pressing device and the closed pressure system are hydraulically separated so that they can be arranged spatially to a significant extent far apart and their interaction is controlled by the control device.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention, as well as further preferred embodiments and improvements thereof, are described and explained in more detail below with reference to the examples shown in the drawings. The features and features apparent from the description and drawings may be used individually or in any combination according to the invention. The drawings show:

Fig. 1 is a perspective view of a sheet unit consisting of a sheet and a frame, FIG. 2 shows a schematic cross-section of an injection mold with an inserted sheet, FIG. 3a is a schematic enlarged detail view of the injection mold of FIG. 2 in the first filling phase, FIG. 3b is a schematic enlarged detail view of the injection mold of FIG. 2 in the second filling phase, FIG. 4 is a schematic cross-sectional view of an alternative embodiment of the injection mold of FIG. 2, FIG. 5 is a schematic cross-sectional view of an alternative embodiment of the injection mold of FIG. 2 and FIG. 6 is a schematic cross-sectional view of an alternative embodiment of the injection mold of FIG. Second

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1, there is shown in perspective a panel unit 11 consisting of a panel 12, in particular a glass panel and a frame 13. In the case of this frame 13, the edge region of the panel 12 is made of plastics material. across the perimeter. The frame 13 may also abut on the outer edge regions, on the inner edge regions or on the front, or on two or three of these regions. In addition, the mating material opposite to the sheet 12 may be attached to the sheet 12 by an adhesion promoter or primer. The frame 13 is hereinafter also referred to as the main frame, for the purpose of delimiting it from the subframe 39 (Figs. 2 and 4), which will be explained in more detail below.

In FIG. 2 is a schematic cross-sectional view of an injection mold 16 consisting of a first mold part 17 and a second mold part 18. The first mold part 17 is provided on its inner side with a first surface region 21, which is designed as a first groove 24, which is adapted to its associated first profile section 22 of the frame 13. A second surface region is arranged adjacent to this and directed towards the center of the sheet 12. an area 26 which is adapted to the edge region of the glass sheet 12 facing it. The glass sheet 12 may abut directly on the second sheet region 26. Following the second sheet region 26, a free space 27 is provided so that the sheet 12 is mounted without contacting the inner side with the first mold part 17. This free space 27 is again delimited by the second surface region 26, wherein the second surface region 26 is again seen outwardly delimited by the first surface region 21 which is formed as a first groove 24. In the embodiment shown in FIG. 1, the frame 13 at the left and right edge regions of the sheet 12 is made e.g. mirror-symmetrical and has the same cross-section in the profile. It can also be used that the cross-section of the frame 13 in the profile varies and is adapted to the installation situation.

A second mold part 18 is arranged opposite the first mold part 17, on the inside of which a first surface region 31 is provided, which is designed as a second groove 32, which is adapted to the associated second profile section 33 of the main frame 13. and the second profile section 33 is formed by a cross-sectional geometry of the main frame 13, wherein in the exemplary embodiment a solution is used in that the outer side of the pane 12, the front side of the pane 12 and a small edge area on the inner side of the pane 12 are wrapped around the main frame 13. adjacent to the first surface region 31, a second surface region 34 is provided in the direction of the center of the pane 12, or adjacent to the center of the second mold portion 18, which is adapted to the edge region of the glass pane 12 facing it. In this second surface region 34, the plate 12 rests again on the second mold part 18. Consequently, a third surface 37, which is formed as a third groove 38, is again oriented towards the center of the sheet 12, this groove 38 being defined by the fourth surface region 40 before a free groove is again formed on the inside of the mold part 18. 27. On the inside of the second mold part 18, an embodiment of the surface regions 31, 34, 37, 40 is also formed on the opposite edge region of the mold part 18.

In the second mold part 18 there is further provided a feed line 41 through which liquid material for the production of the main frame 13 can be supplied to the injection mold 16. Further, a molding device 42 is connected to the second mold part 18 which feeds the liquid material directly to the third mold. A valve 45 is provided in the inlet conduit 41 which opens and closes the passage to the connecting conduit 44 by the valve body 46 by means of a power actuator 48. The connecting conduit 44 extends from the inlet conduit 41 to a second groove 32 which communicates with the first groove 31.

The injection mold 16 allows the following method of manufacturing the injection molding, as will be explained in greater detail below with reference to the enlarged figures in relation to the first filling phase in FIG. 3a and in relation to the second filling phase in FIG. 3b.

In the first filling phase, the passage 47 to the connecting line 44 is closed by the valve body 46 of the valve 45, so that the liquid material can directly enter the third groove 38 by means of the presser 42. The valve 45 only opens after the third groove 38 has a predetermined liquid filling condition. material, e.g. a fill level of over 90% but less than 99%. Thereby, the panel 12 is first unilaterally applied and pressed against the second surface region 26 of the first mold part 17, so that a uniform surface compression is exerted by the third groove 38 of the subframe 39 formed on the panel 12.

After reaching a predetermined filling state in the third groove 38 and the associated embodiment of the subframe 39, the second filling phase according to FIG. 3b to switch the valve 45 so that the fluid material now enters the second groove 32 and the first groove 24 while maintaining the pressure in the groove 38 through the connecting line 44 to form the main frame 13. After the groove 24, 32 is completely filled with the liquid material, it is in phase After the material has cooled and solidified, the injection mold is opened and the resulting sheet unit 11 is removed from the injection mold 16. Subsequently, the subframe 39 is separated from the glass sheet 12 and can be brought back to the material circuit for further use.

Due to the flattening of the subframe 39, the main frame 13 is connected in a continuous manner to the pane 12, in particular to its outside, so that no further treatment is required.

In FIG. 4 shows an alternative embodiment of the injection mold 16 of FIG. 2. 2 distinguishes in that the connecting line 44, which leads to the first and second grooves 24, 32, is supplied not via the supply line 41, but via a separate second supply line 43, which is connected to another separate pressing device 42. As a result, in this embodiment, the power actuator 48 and the valve 45 may be omitted. Consequently, firstly, liquid material is injected into the third groove 38 through the feed line 44 via the press device 42 to form the subframe 39. Once a predetermined condition is reached In the second stage of filling, the liquid feed is supplied to the third groove 38, which is preferably sensed by a pressure sensor, by means of the press device 42 a second supply line 43 to form the main frame 13. Further steps of the method are analogous to the embodiment of FIG. Second

In FIG. 5 shows a further alternative embodiment of the injection mold 16 for the production of the sheet unit 11. In this injection mold 16, the first and second grooves 24, 32 are provided with a fluid feed line 44 for forming the main frame 13. For this purpose, a pressing device 42 is connected to the supply line 41. The supply line 44 is preferably provided with a throttle point 58 before the opening to the first and second grooves 24, 32. The pressure line 55 branches from the supply line 41, which leads to a pressure transducer or transmitter. 54, from which the pressure line 56 leads to the third groove 38. In the third groove 38, a pressure body 51 is formed in this embodiment, which together with the pressure line 56 and the pressure transducer 54 forms a closed pressure system 50.

In this embodiment, the process steps analogous to those of FIG. 2, wherein after insertion of the sheet 12 and closing of the injection mold 16, the liquid material is injected into the supply line 41 by means of the press 42, in which the material at first reaches the pressure transmitter 54, which by means of the pressure line 56 acts directly on the pressure body 51, so that the panel 12 abuts the second surface region 26 or abuts this small force. In the second filling phase - also due to the throttling point 58 - the liquid material arrives through the throttling point 58 into the first and second grooves 24, 32. The second filling phase runs until the first and second grooves 24, 32 are completely filled. At the same time, the pressure on the pressure transducer 54 is maintained during the application of the pressure by means of the pressing device 42, so that the table 12 is exerted by the pressure body 51 by a compressive force. Thus, in this embodiment, a closed pressure system 50 is used in place of the fluid support subframe 39, which activates and acts on the pressure body 51 by filling the fluid pressure and optionally supported by the pressure transducer 51, so that it acts as a subframe 39.

In FIG. 6 shows an embodiment analogous to FIG. 5. This embodiment differs in that the pressure transducer 54 is not connected to the supply line 41 by means of the first pressure line 55, but that the pressure transducer 54 is connected via a pressure line 59 to the pressure generator 62 for the hydraulic piston drive 61 of the die 42. a pressure line 59 that leads to a pressure transducer 54 is preferably integrated with a control or equalizing device, such as e.g. pressure sensor. Other constructions and methods of operation are analogous to the embodiment of FIG. 5th

An alternative embodiment of FIG. 6 is shown in dotted lines. Instead of applying pressure to the pressure transducer 54 via the pressure line 59 by pressure by means of the press device 42, a separate power drive 71 can be used which is directly connected to the pressure generator 54, the drive force being controlled by the pressure sensor 72. In this alternative embodiment, the pressure generator 62 regulates the press device 42 and is completely separated from the closed pressure system 50 because it is controlled by a power drive 71. By means of a common control device, controlled control of both components can take place.

Claims (14)

Method for manufacturing a sheet unit (11) from a glass sheet (12) and a frame (13) in an injection mold (16) with at least two mold parts (17, 18) - of which the first mold part (17) is provided on its inner side with a first surface region (21) which is formed as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13) and is provided with a first surface area (21) towards the center of the pane (12) with an adjacent second surface area (26) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is provided on its inner side with a first surface region (21) which is designed as a second groove (31) which is adapted to the associated second profile section (33) of the frame (13) and is provided with a first surface area (21) towards the center of the pane (12) with an adjacent second surface area (34) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is also provided on its inner side with a third surface region (37) which is formed as a third groove (38) to form a subframe (39) which is at least partially situated in the same plan area in which a second surface region (26) for the edge region of the glass pane (12) facing it is situated in the first mold part (17), - of which the second mold part (18) is additionally provided with at least one material supply line (41) for the frame (13) to which a pressing device (42) is connected, the supply line (41) leading to a third groove (38) ) and is provided from the third groove (38) extending and to the second and to the first groove (24, 32) through a connecting conduit (44), - of which a valve (45) is arranged in the second mold part (18) at the passage (47) from the third groove (38) to the connecting line (44), by means of which rr m-η by which the transition to the connecting line (44) ) and to the first groove (24, 32) by the following method steps: at the beginning of the process cycle, the two mold parts (17, 18) are moved from each other, the glass pane (12) is applied to the second surface region (26, 34) of the first mold part (17) or the second mold part (18), the injection mold (16) is closed, the valve (45) at the transition (47) to the third groove (38) to the second and to the first groove (24, 32) leading the connecting pipe (44) is closed, the material for the frame (13) is liquid, this liquid material is injected into the third groove (38) during the first filling phase through the supply line (41) until it reaches a predetermined filling level, at the beginning of the subsequent second filling phase the valve (45) at the passage (47) ) from the third groove (38) to the connecting line (44) and the liquid material is injected both further into the third groove (38) for the subframe (39) and the now open connecting line (44) into the second groove (32) and into a first groove (24) for the frame (13) after being in the third groove when (38) reaches the maximum degree of filling and the liquid material contained therein exerts pressure and the subframe (39) thereby presses the glass pane (12) against the second surface region (34) of the second mold part (18). ) further injected into the second and first grooves (24, 32) until they are completely filled, AA - the supply line pressure (44) is maintained during the contraction phase of the injected material, - after the injection material has cooled and solidified, the injection mold (16) is opened and the resulting sheet unit (11) is removed from the injection mold (16), and - the subframe (39) is removed from the glass pane (12). Method for producing a sheet unit from a glass sheet (12) and a frame (13) in an injection mold (16) with at least two mold parts (17, 18), - of which the first mold part (17) is provided on its inner side with a first surface region (21) which is formed as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13) and is provided with a first surface area (21) towards the center of the pane (12) with an adjacent second surface area (26) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is provided on its inner side with a first surface region (31) which is designed as a second groove (32) which is adapted to the associated second profile section (33) of the frame (13) and is provided with a first surface area (31) towards the center of the pane (12) with an adjacent second surface area (34) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is also provided on its inner side with a third surface region (37) which is formed as a third groove (38) to form a subframe (39) which is at least partially situated in the same plan area in which a second surface region (26) for the edge region of the glass pane (12) facing it is situated in the first mold part (17), And / or wherein the second mold part (18) is further provided with at least one of a third groove (38) extending through a first supply line (41) for the subframe material (39) and a second and third groove (24, 32) extending through a second supply line (43) for material of the main frame (13), wherein a pressing device (42) is always connected to both the first supply line (41) and the second supply line (43) by the following process steps: at the beginning of the process cycle, the two mold parts (17, 18) are moved from each other, the glass pane (12) is applied to the second surface region (26, 34) of the first mold part (17) or the second mold part (18), the injection mold (16) is closed, the material for the subframe (39) is brought into a fluid state, the fluid material is injected into the first groove (24) and the second main frame groove (24) in the subsequent second phase of filling with the second supply line (44) (13), at the same time injecting material through the first inlet pipe (41) into the third groove (38) onto the subframe (39) after the maximum filling level has been reached in the third groove (38) and the liquid material contained therein the pressure and the subframe (39) thereby pressing the glass pane (12) against the second surface region (26) of the first mold part (17), the fluid material for the frame (13) is further injected into the second and first grooves (43) by the second supply line (43). 32, 24) until these grooves (32, 34) are also completely filled, during the shrinking phase of the injected material, the pressure in the supply lines (41, 43) is maintained, - after the injection material has cooled and solidified, the injection mold (16) is opened and the resulting sheet unit (11) is removed from the injection mold (16), and - the subframe (39) is removed from the glass pane (12). Method for producing a sheet unit (11) from a glass sheet (12) and a frame (13) in an injection mold (16) with at least two mold parts (17, 18), - of which the first mold part (17) is provided on its inner side with a first surface region (21) which is formed as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13) and is provided with a first surface region (21) adjacent to a second surface region (26) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is provided on its inner side with a first surface region (31) which is designed as a second groove (32) which is adapted to the associated second profile section (33) of the frame (13) and is provided with a first surface region (31) adjacent to a second surface region (34) which is adapted to the peripheral region of the glass pane (12) facing it, - of which the second mold part (18) is additionally provided on its inner side with a third groove (38) for the pressure body (51) of the closed pressure system (50) which is at least partially situated in the same plan area in which it is in the first a second surface region (26) for the edge region of the glass pane (12) facing the mold part (17), - of which the first mold part (17) is additionally provided with at least one of the first and second grooves (24, 32) extending through a supply pipe (41) for the frame material (13) to which a pressing device (42) is connected, In the first mold part (17), one side of the pressure transducer (54) is connected to the material supply pipe (41) for the frame material (13), on the other side a pressure pipe (56) for the closed pressure system (50) is connected. a choke point (58) is arranged downstream of the pressure transducer (54) and before outlet into the second and first grooves (24, 32) by a throttle point (58) by means of the following method steps: at the beginning of the process cycle, the two mold parts (17, 18) are moved from each other, the glass pane (12) is applied to the second surface region (26, 34) of the first mold part (17) or the second mold part (18), the injection mold (16) is closed, the material on the frame (13) is brought into a liquid state, this liquid material is injected by means of a pressing device (42) into the supply pipe (41) of the frame (13), in which the material reaches the carrier (54) of pressure and the subsequent second filling stage arrives at the throttling point (56) in front of the second and first grooves (32, 24) of the frame (13) after the fluid material has reached the throttling point (56) and in the fluid material and through the transmitter (54) and the pressure line (56) has also increased pressure in the closed pressure system (50) so that the pressure body (51) presses the glass pane (12) against the second planar region (26) of the first mold part (17) is a liquid material for the frame. (13) injected through the supply line (44) into the first groove (24) and the second groove (32) until they are completely filled, - during the shrinking phase of the injected material of the frame (13), the pressure in the supply line (44) is maintained, and - after the injection material has cooled and solidified, the injection mold (16) is opened and the resulting sheet unit (11) is removed from the injection mold (16). Method for producing a sheet unit (11) from a glass sheet (12) and a frame (13) in an injection mold (16) with at least two mold parts (17, 18), - of which the first mold part (17) is provided on its inner side with a first surface region (21) which is formed as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13) and is provided with a first surface region (21) adjacent to a second surface region (26) which is adapted to the edge region of the glass pane (12) facing it, - of which the second mold part (18) is provided on its inner side with a first surface region (31) which is designed as a second groove (32) which is adapted to the associated second profile section (33) of the frame (13) and is provided with a first surface region (31) adjacent to a second surface region (34) which is adapted to the peripheral region of the glass pane (12) facing it, - of which the second mold part (18) is additionally provided on its inner side with a third groove (38) for the pressure body (51) of the closed pressure system (50) which is at least partially situated in the same plan area in which it is in the first a second surface region (26) for the edge region of the glass pane (12) facing the mold part (17), - of which the first mold part (17) is additionally provided with at least one of the second and first grooves (24, 32) with a lead inlet pipe (44) for the frame material (13), and - of which, in the first mold part (17), a pressing device (42) is connected to the material supply pipe (44) for the frame material (13), which is provided with a hydraulic piston drive (61) coupled to a closed pressure system (50) , with the following steps of the method: - at the beginning of the process cycle, the two mold parts (17, 18) are moved from each other, - the glass pane (12) is applied to the second surface region (26, 34) of the first mold part (17) or the second mold part (18), - the injection mold (16) is closed, - the material for the frame (13) is brought into a liquid state, - this liquid material is injected into the second and first grooves (24, 32) via a supply line (41) by means of a pressing device (42), the pressure system (50) with the pressure body (51) being first mentioned by means of a hydraulic piston drive (61) the pressure plate (51) thereby presses the glass pane (12) against the second surface region (26) of the first mold part (17), - during the shrinking phase of the injected frame material (13), the pressure in the pressing device (42) is maintained, and - after the injection material has cooled and solidified, the injection mold (16) is opened and the resulting sheet unit (11) is removed from the injection mold (16). A method according to claim 1 or 2 with a method step: - the liquid material on the frame (13) is injected into the third groove (38) for the subframe (39) during the first filling phase until a degree of filling of more than 90% and less than 100% is reached therein. Method according to any one of claims 1 to 4, with the method step: - before or after the glass pane (12) is applied to the first mold part (17) or the second mold part (18), an adhesion promoter is applied to the surface areas of the glass pane (12) on the frame (13). An apparatus for carrying out the method according to claim 1, having the features: - the injection mold (16) is embodied as at least two-piece and consists of a first mold part (17) and a second mold part (18), - the first mold part (17) is provided on its inner side - a first surface region (21) which is embodied as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13) (the main frame) and the first surface region (21) in the direction adjacent to the second surface an area (26) adapted to the peripheral region of the glass pane (12) facing it, - the second mold part (18) is provided on its inner side with a first surface region (31) which is designed as a second groove (32) which is adapted to the associated second profile section (33) of the frame (13) and the first surface region (31) an adjacent second surface region (34) which is adapted to the peripheral region of the glass sheet (12) facing it; the second mold part (18) is also provided on its inner side with a third surface region (37), a third groove (38) for the subframe (39) which is at least partially situated in the same plan view area, in which a second surface region (26) for the edge region of the glass pane (12) facing it is situated in the first mold part (17) , the second mold part (18) is further provided with at least one material supply pipe (41) for the subframe (39) leading to the third groove (38) and at least one from the third groove (38). the second and the second mold part (18) having a valve body (46) at the transition (47) from the third groove (38) to the connecting line (44), which is displaceable between a closed position and an open position which in its closed position closes the passage to the connecting line (44) and in its open position opens the passage (47) to the connecting line (44) and which is connected to a power drive (48), to which an injection pressure for the material forming the frame forming the pressing device (42) is connected to the third groove (38) leading the inlet pipe (41). An apparatus for carrying out the method according to claim 2 having the features: - the injection mold (16) is embodied as at least two-piece and consists of a first mold part (17) and a second mold part (18), - the first mold part (17) is provided on its inner side - a first surface region (21) which is formed as a first groove (24) which is adapted to the associated first profile section (22) of the frame (13), and - a first surface region (21) adjacent to a second surface region (26) which is adapted to the edge region of the glass pane (12) facing it, - the second mold part (18) is provided on its inner side - a first surface region (31) which is embodied as a second groove (32) which is adapted to the second profile section (33) associated therewith (13), and - a first surface region (31) adjacent to a second surface region (34) which is adapted to the peripheral region of the glass pane (12) facing it, - the second mold part (18) is additionally provided on its inner side with a third area (37) which is formed as a third groove (38) for the subframe (39), which is at least partially situated in the same plan area in which a second surface region (26) for the edge region of the glass pane (12) facing it is situated in the first mold part (17), - the second mold part (18) is also provided with at least one to the third groove (38) extending through the first material supply pipe (41) in the mold; a subframe (39) and a second and third groove (32, 24) extending through a second supply pipe (43) for the frame material (13), - to the first sub-frame material supply line (41) and to the second sub-frame material supply line (43), a pressing device (42) is provided to produce the injection pressure required for the material. The apparatus for carrying out the method of claim 3, having the features: - the injection mold (16) is embodied as at least two-piece and consists of a first mold part (17) and a second mold part (18), - the first mold part (17) is provided on its inner side with a first surface region (21) which is designed as a first groove (24) which is adapted to its associated first profile section (22) of the frame (13), and - a first surface region (21) adjacent to a second surface region (26) which is adapted to the edge region of the glass pane (12) facing it, - the second mold part (18) is provided on its inner side - a first surface region (31) which is embodied as a second groove (32) which is adapted to the second profile section (33) associated therewith (13), and - a first surface region (31) adjacent to a second surface region (34) which is adapted to the peripheral region of the glass pane (12) facing it, IN - the second mold part (18) is also provided on its inner side with a third surface area which forms a third groove (38) for the pressure body (51) of the closed pressure system (50) which is at least partially situated in the same plan area, wherein a second surface region (26) for the edge region of the glass pane (12) facing it is situated in the first mold part (17), - the first mold part (17) is additionally provided with at least one of the first and second grooves (24, 32) extending through a lead-in line (41) for the frame material (13), - in the first mold part (17), a pressing device (42) is applied to the material supply pipe of the frame (13) to produce the injection pressure required for the material, - in the first mold part (17), one side of the pressure transducer (54) is connected to the material supply pipe (41) of the frame material (13), the other side of which is connected to a pressure pipe for a closed pressure system (50) with pressure body (51) ) - a throttling point (58) is arranged downstream of the pressure transducer (54) in the frame material supply line (41) and before the outlet into the first recess (24) and the second recess (32). The apparatus for carrying out the method of claim 4, having the features: - the injection mold (16) is embodied as at least two-piece and consists of a first mold part (17) and a second mold part (18), - the first mold part (17) is provided on its inner side with a first surface region (21), which is designed as a first groove (24) which is adapted to its associated first profile section (22) of the frame (13) and the film m a second surface region (26) adjacent to the first surface region (21), which is adapted to the peripheral region of the glass sheet (12) facing it, the second mold part (18) being provided on its inner side with a first surface region (31) formed as a second groove (32) which is adapted to the associated second profile section (33) of the frame (13) and to the first surface region (31) adjacent to the second surface region (34) which is adapted to the edge region of the pane (12) 2), the second mold part (18) is also provided on its inner side with a third groove (38) for a pressure body (51) of the closed pressure system (50) which is at least partially situated in the same plan area in which it is in the first a second surface region (26) for the edge region of the glass pane (12) facing the mold part (17), the first mold part (17) being provided with at least one of the first and second tracks In the first mold part (17), a pressing device (42) is connected to the supply material (41) for the frame material (13), generating the necessary injection pressure for the frame material (24). the material of the frame (13), the pressing device (42) being equipped with a hydraulic piston drive (61), which is connected to a pressure generator (62), a roll, A - the closed pressure system (50) with the pressure body (51) is either directly or indirectly coupled to the pressure generator (62) of the hydraulic piston drive (61). Device according to claim 9 or 10, having the features: - the closed pressure system (50) with the pressure body (51) is connected to a monitoring and compensating device (66), by means of which the volume of the hydraulic working means can be checked at preset intervals when changing the workpiece and adjusted to a preset desired value. Device according to claim 10, having the features: - the closed pressure system (50) with the pressure body (51) is coupled via the pressure transducer (54) to the pressure generator (62) of the hydraulic piston drive (61) of the pressing device which is arranged in the supply line (44) to the first and second grooves (24, 32). Device according to claim 10, having the features: - the closed pressure system (50) with the pressure body (51) is coupled directly to the pressure generator (62) of the hydraulic piston drive (61) of the pressing device (42) via the pressure transmitter (54). The apparatus of claim 10, having the features: - the hydraulic piston drive (61) of the pressing device (42) is either equipped with a pressure sensor (69) or its power drive (71) is coupled to a force sensor (72), - instead of coupling the closed pressure system (50) to the pressure generator (62) of the hydraulic piston drive (51) of the pressing device (42), the closed pressure system (50) itself is equipped with a pressure generator rr / tir (62) which is controlled by the sensor (69) ) of a hydraulic piston drive (61) or a force drive force sensor (71) of a pressing device (42).