DE19515791A1 - Cutting shapes from glass fibre mats - Google Patents

Abstract

Continuous glass fibre mat (3) is decoiled and precut into sections (5) before being heated (7) and then pressed and stamped (8). In the last operation, the areas to be cut are pressed on each side by stamps (17, 18) before a cutting blade (21) moves between them to make the cut. The stamps (17, 18) are arranged in a plane parallel to that of the cutting plane. The space between the stamps is 2-3 mm with the space between the blade walls and the stamp walls being 0.3-0.5 mm. A press stamp (16) may be incorporated into the press (8) which shapes the mat section inside the cut area.

Description

The invention relates to a device for producing Glass fiber preforms made of glass fiber mats for one subsequent post-treatment the one feeder for glass fiber mats, a pre-cutting device and a transport device for the transport of the cut glass fiber mats via a heating station to a press and punching station.

In devices of this type, glass fiber mats or Continuous fiberglass mats in a shaping cut with at least two tools, of which e.g. B. a first from a lower one  Half of the mold and an upper one acting on it from above Half of the mold consists, deformed and from a second in egg punched out after the subsequent punching process.

For this there are two lower mold halves on one across Transport direction sliding carriage next to each other arranged with which the tools alternate from one centrally arranged press station to one of two punching stations arranged next to the pressing station can be fed are.

In another device of this type according to EP 0 622 167 A1 are two lower molds in a pressing and punching station halves side by side on a rotating carousel table arranged between two in the direction of the conveyor belt of a transport device one behind the other Positions can be moved in a circle.

In the first position in the direction of transport, an un tter mold half and an upper mold top, in which Direction of transport second position act the second lower Half of the mold and a stamping die, which Punch the preform out of the glass fiber mat together.

The requirement for glass fiber preforms is that the punched edge must be frayed, d. H. the glass fibers may only be a certain amount larger than the Reach out the punched edge.

In the known stamping processes are due to the poor punchability and the structure of the glass fiber Preforms many glass fibers when punching out of the structure  pulled out. Compliance with tight tolerances for the Fiber protrusion on the punched edge is known with the Ver drive not reachable.

The invention has for its object a device for the production of glass fiber preforms from glass fiber mats so that the glass fiber preforms with little or no fiber overhang for yourself subsequent post-treatment can be generated.

The object is achieved in that the invention Device for the production of glass fiber preforms in her pressing and punching station a form punch for Ver shaping glass fiber mats into preforms and through management of an external trimming and, if necessary, min at least one inner cut of predetermined cut contours of the Glass fiber mats is present, the at least one pressing stamp, with the parallel spaced apart, in front preferably on both sides along the specified cutting contour a glass fiber mat is compressible, and each one Compression stamp assigned punch cutting knife that Arranged movably relative to the compression die is not.

The punching knife lies inside the compression die, the the edge area of the preform laterally along the cut press the contour.

In the form punch is within the intended Cutting contour a press ram for deforming, in particular for spatially deforming the glass fiber mat into a topographical one Element, to a preform, present without  thereby ver the glass fibers in the glass fiber mat press as it is carried out by the compression ram a trimming essentially without fiber overhang follows. As a result, the one exerted on the glass fiber mat Deformation pressure is significantly lower than the compression pressure the compression stamp with which a package-intensive compression the glass fibers in the mat is aimed for.

According to the cut contours of the preform if necessary, further pressing within the ram stamp with a further assigned punch be arranged cutting knife.

In this case, the stamp surface assigned to a compression stamp surface that is in contact with the glass fiber mat Lich trained.

The press ram to deform the glass fiber mat into one Preform can thus also be used independently within the for the Outside trim provided compression die movable be ordered.

Conveniently, the press can in the form punch pel and at least one compression stamp, in particular for the outside trimming provided a structural Represent unit, with the press ram within the Ver ram can slide.  

The double-contoured compression punch be consist of an inner and an outer compression stamp, which are slightly spaced apart, with a Cutting gap in this way between the two compression dies leads is that it runs along the cutting line.

Are within the preform z. B. through openings provided, so is the inner wall of the Compression stamp for the cutting tool never minimally spaced and the lines of the cutting The blade of the punch cutting knife matches the cutting line on the glass fiber mat.

The form punch is in one embodiment with egg ner lower mold half and an upper mold upper part formed the opposite, preferably space Liche pressing surfaces for deforming an interposed glass fiber mat to a preferably topographic element point. The lower mold half and the upper mold part each have at least one mint on the pressing surface the cutting gap, which are opposite each other are arranged, one of the cutting gaps Movable punch cutting knife is located, which from the Cutting gap extended for trimming the glass fiber mat can be, the glass fiber mat before punching process by pressing the upper mold part  and the lower half of the mold on both sides of the cutting gap is pressed.

In one of the cutting gaps of the double contour in cross section shaped plunger has the movably guided punch cutting knife on a feed drive, with the help of which the punch cutting knife after pressing the glass fiber mat can be guided in the direction of the other cutting gap and trimming the uncompressed part of the glass fiber mat along the cutting line in the cutting gap.

It is expedient that the punch cutting knife has a separa th feed drive with which the punch cutting irrespective of the movement of the lower mold half and the upper part of the mold and punch can be actuated is.

In another embodiment, the upper mold part can at least an upper, double-contour-shaped compression stamp an inner and an outer closed or interrupted NEN or open compression stamp between which there are the circumferential cutting gap in which the punch cutting is located knife is movably arranged, the lower mold half an opposite, double-contoured in cross-section, has lower compression stamp with a circumferential one Groove is provided against the circumferential cutting gap lies and has its width, the punch cutting Knife for trimming the glass not pressed in the cutting gap fiber mat can be inserted into the groove.

The pressing and pressing surfaces of the lower half of the mold and the upper mold top can be spatially shaped,  thus also the cutting lines or the cutting contours run spatially on the interposed glass fiber mat.

The cutting blade of the punch cutting knife is also spatial shaped and the spatially shaped cutting contour of the given adapted a preform.

The distance is in the double contour-shaped compression die of the circumferential cutting gap between the inner and outer Compression punch, preferably 2 to 3 mm.

The distance between the knife walls of the punch knife and the adjacent walls of the respective dop pel contour-shaped compression stamp is preferably 0.3 up to 0.5 mm.

The device according to the invention works according to an invent method according to the invention, in which in the pressing and punching tion a glass fiber mat between a lower half of the mold and an upper mold top of a molding and stamping unit stuff is fixed and then to the intended cutting lines or cutting contours preferably spaced on both sides is pressed. Then the two spaced, pressed parts, e.g. B. compression zone or compression rings, in one unpressed part containing cutting gap separated. In the same Chen operation can deform the glass fiber mat to topographical element that continues to be cropped as a preform is distributed, preferably immediately before separating be performed.

When using single-contour compression punches the intended cutting lines are preform contour  pressed on the inside and by the punch cutting knife from unpressed part separately.

The glass fiber mat can not only be one flat preform are processed, but the glass fiber mat can also be between the outer circumferential and the singular inner cutting lines spatially deformed who the, depending on how the deforming pressing surfaces of the lower Mold half and the upper mold top are formed.

Due to the pressure applied, the compression punches become the glass fibers in the glass fiber mat into one led close contact, which is reinforced by binders can be.

By pressing with high pressure the distances between the individual glass fibers are reduced and largely eliminated as well as many glass fibers inside Brought into contact with each other.

The compression pressure is preferably chosen so high that that the glass fibers in a packet-like or stacked Condition to be transferred.

Is the glass fiber mat of the punch cutting knife, which are in the cutting gap between the compression punches det, cut, prevents friction and the Adhesion of the glass fibers (through the addition of a binder) pulling glass fibers out of the fiber structure and thus that Fray.  

After moving the punching knife back into the original Sprung gap the Verpreßstempel of the ver pressed closed, preferably revolving parts of the Glass fiber mat released.

The device according to the invention and the following be Written methods according to the invention enable Ver forming and punching, especially cutting in one Operation, in particular in the upper mold top and in the lower mold half of the die cutting tool above cutting gaps are introduced and in the upper mold top or in the lower mold half Punching knife is integrated in such a way that the Cutting blade is located in the corresponding cutting gap and can move and the punch cutting knife over a level if integrated, regardless of the movement of the form and punch tool actuated feed drive operated can be.

The glass fiber mat is in the pressing and punching station between the lower mold half and the upper mold upper part of the pressing and punching tool fixed, then to the provided cutting lines pressed on both sides spaced. Then the two spaced, pressed Parts in the intermediate, uncompressed part containing Cutting gap separated from each other.

The glass fiber mat is thus in a continuous ar working process in one tool, in one die-cutting tool, cropped within the outlining cutting line as well within the one responsible for external trimming  Verpreßstempels z. B. spatially to a topographical Ele ment, the preform, deformed.

Likewise, if there is a planned internal singular passage Open the fiberglass mat between the outer one the cutting line and the singular cutting lines by min at least a press ram containing a ram be shaped.

The compression pressure exerted by the compression punches leads to the glass fiber mat for close contact of the glass fiber, the contact being made using an added binder can be reinforced.

After moving the punching knife back into the original The starting stamp will be the initial position the pressed closed parts of the glass fiber mat dissolves and the preform for further post-treatment from the pressing and punching station taken.

The invention thus opens up the possibility that the end Prevent fraying of glass fiber preforms when cutting and that the summary of the work steps Presses and punches for further transport between presses and Punching and the facilities provided are no longer necessary leaves.

Further developments and advantageous configurations of the Invention are specified in the further subclaims.

The invention is based on an exemplary embodiment several drawings explained in more detail.

Show it:

Fig. 1 is a schematic representation of an inventive SEN apparatus for manufacturing a glass fiber of preform of glass fiber endless mat according to the invention with a mold die for manufacturing a preform in a working cycle,

Fig. 2 is a glass fiber mats plan view with recorded cutting line of a circular preform with a circular singular cutting line of an intended through hole,

Fig. 3 is a schematic sectional illustration of the principle of fixing the glass fiber mat in a mold OF INVENTION dungsgemaßen punching tool for producing a fiber preform,

Fig. 4 is a schematic sectional illustration of the principle of pressing the fiberglass mat to the side of, in front of seen cutting line with double shaped contour Verpreßstempeln

Fig. 5 is a glass fiber mats plan view with recorded cutting lines and the respective two-sided ver pressed parts (Verpreßringe)

Fig. 6 is a schematic sectional illustration of the principle of cutting the glass fiber mat compressed by a punch cutting blade,

Fig. 7 is a plan view of a glass fiber preform after an outer and inner trimming and

Fig. 8 is an enlarged compared to Fig. 1 Dar position of the mold punch with spatially shaped ram and compression ram.

In Fig. 1 the device according to the invention for the produc- tion of glass fiber preforms from glass fiber continuous mats is shown. The device 1 consists of a Einzugsein device 2 for the glass fiber endless mats 3 , from a pre-cutting device 4 for cutting a glass fiber mat 5 to be processed, from a transport device 6 for a transport z. B. by means of a conveyor belt or a Gre fersystems the cut glass fiber mat 5 to a heating station 7 and from a heating station 7 downstream pressing and punching station 8th After the pressing and punching station 8 , a distribution device 9 can be built up, which transports the glass fiber preform to further after-treatment stations.

In the pressing and punching station 8 there is a die punching tool 10 according to the invention for processing the glass fiber mat 5 coming from the heating station 7 , which at this point can already be soaked with a preferably curable binding medium.

In Fig. 1, 10 is according to the invention forming and punching tool consisting of a lower mold half 11 and an upper pressing and die top 12, wherein the rack-like Fixed To restriction device is not shown of the pressing and punching the upper mold component 12 in Fig. 1.

Both the lower mold half 11 and the upper mold upper part 12 preferably consist of several parts which, on the one hand, are formed according to the closed cutting contour of the preform to be punched and the singular cutting lines to be punched out from the provided passage openings in the inner surface area of the glass fiber mat 5 and, on the other hand, for the intended deformation of the glass fiber mat 5 into a preform is present. The preform 33 is produced in the form of a topographical element from the glass fiber mat 5 , the deforming pressure on the glass fiber mat 5 being far below the pressing pressure.

Fig. 2 shows z. B. a cut from the continuous mat 3 glass fiber mat 5 , z. B. a circular surface 15 along the circular cutting line 13 , which is also the intended cutting contour of the preform, can be cut off.

Due to the preform, a through opening z. Least 15 minutes within the circular area. B. the hole 14 in a same operation by another existing in the die punch 10 compression die, which can be arranged in particular re movable within a die 16 , cut out. A compression die for this through opening 14 is not shown in the present FIG. 1.

In FIGS. 3 and 4, the principle of fixing and the pressing is shown. The working stages of the processing of the glass fiber mat 5 , which are to be cut off along the cutting line 13 of the circular surface 15 without fringes, are simply shown in sectional representations.

On a in the exemplary embodiment, in particular in cross-section, preferably double-ring-shaped Ver press ram 17 'and 17 ''of the lower mold half 11 of the mold punch 10 , the glass fiber mat 5 is on. The sem lower compression stamp 17 ', 17 ''is an upper, in particular special double-contoured, preferably double-ring-shaped compression stamp 18 ', 18 '' opposite. Both cross-sectional compression punches 17 and 18 fix the glass fiber mat 5 . Between the two essentially hollow cylindrical, cross-sectionally double-ring-shaped pressing stamps 17 and 18 there is a circumferential cutting gap 19 and 20 , which have the same width at right angles to the glass fiber mat 5 and along the cutting line 13 .

In one of the cutting gaps 19 or 20 , in the exemplary embodiment in the upper cutting gap 19 , a substantially cylindrical punching knife 21 , which is annular in cross section, is movably arranged, with a cutting edge which is smooth or has serrations.

Both the cross-sectionally lower, lower compression stamp 17 and the oppositely arranged, cross-sectionally double-ring, upper compression stamp 18 can be arranged to be movable relative to one another perpendicular to the glass fiber mat 5 .

In Fig. 4 the upper, in cross-section double-ring pressing die 18 ', 18 ''in the direction of the lower, cross-section double-ring-shaped pressing die 17 ', 17 '' is moved, which is shown by the arrow direction 22 . The movement of the compression die 18 ', 18 ''receives the glass mat 5 on both sides to the circumferential cutting gaps 19 and 20 two approximately the ring width of the compression die 17 ', 18 'and 17 '', 18 ''corresponding wide parts 23 and 24 who z. B. in plan view of the glass fiber mat 5 are formed as compression rings.

In Fig. 5, such a plan view is shown on the glass fiber mat 5 of FIG. 2, wherein in addition to the cutting lines 13, 14 on both sides of the cutting line 13 Verpreßringe 23 and 24 and the cutting line 14 Verpreßringe are shown 34 and 35 on both sides.

In FIG. 6, in a further sectional view of the cutting blade 25 provided with a central punch cutting knife 21 in direction of arrow 26, that is along the cutting line 13 is represented by the unpressed in the cutting gap 19, 20 glass fiber mat 5 moves. It is cut off from the glass fiber mat 5, the unnecessary edge portion 27 which is later removed as waste from the pressing and punching station. 8

The opposite cutting gaps 19 and 20 , which are annular in cross section, are preferably about 2 to 3 mm wide. The punch cutting knife 21 with the cutting blade 25 , the lines of which are defined by the preform cutting contour, that is to say by the cutting line 13 , can be dimensioned such that between the inner wall 28 of the knife and the outer wall 30 of the inner compression die 17 'or 18 ' and the outer wall of the knife 29 and the inner wall 31 of the outer compression ram 17 '' or 18 '' a gap of preferably about 0.3 to 0.5 mm remains.

The punch cutting knife 21 is preferably integrated in FIGS . 1, 3, 4, 6 and 8 in the upper mold upper part 12 . It is connected to a separate feed drive, which is independent of the movement of the die-cutting tool 10 according to the invention, the feed drive having its own universally usable connection device, depending on the connection device of the punch cutting knife 21 . Like the feed drive, the two connection devices are not shown in the figures.

In Fig. 7, the glass fiber preform 33 is Darge such that the compression rings 23 and 34 can still be seen on it. The shaping by means of the press ram 16 to form a preform takes place with considerably less pressure without compressing the glass fiber mat 5 in such a way that the glass fibers have to be strongly compressed.

As shown in Fig. 8, the distances after the deformation between the spatially shaped ram 16 'and 16 ''and after the pressing between the spatially extending double ring-shaped ram 17 ', 17 '' and 18 ', 18 ''un different . The Fig. 8 thereby substantially enlarging the mold punch 10 in Fig. 1 represents, wherein the interposed fiberglass mat to the preform 33 is shown deformed and the edge region side in the current state of the pressing. The deformed parts of the press ram 16 'and 16 ''are spatially shaped such that the preform 33 contains a spatially shaped shape in the form of a topographical element. The existing in the lower mold half 11 cutting gap 20 is formed as a circumferential de groove between the two cross-sectional compression dies 17 'and 17 ''. After the deformation and the die cut, the superfluous edge region 27 is cleanly separated from the preform 33 .

The process according to the invention is described below ben, according to which the device according to the invention works:

Glass fiber mats 5 are cut off from the glass fiber endless mat 3 and are transported to a pressing and punching station 8 by means of a transport device 6 via a heating station 7 .

In the pressing and punching station 8, the glass fiber mat is of the inventive form-stamping tool xed 5 between the lower mold half 11 and the upper molds shell 10 fi, pressed thereafter preferential manner spaced apart on both sides of intended cutting lines 13, 14th The two spaced, pressed parts 23 , 24 and 34 , 35 are then separated in the cutting gap 19 , 20 containing an unpressed part 32 .

The glass fiber mat 5 is in a continuous work process within the outlining cutting line 13 by at least one ram 16 within the section responsible for the outer section of the ram 17 , 18 into a preform 33 .

Are singular inner cutting lines 14 within the outline-cutting line 13 available, then the glass fiber mat 5 is deformed accordingly by a press ram 16 .

The pressing pressure exerted by the pressing stamps 17 , 18 leads to a close contact in the glass fiber mat 5 , which can be stabilized by means of the added binder, which is preferably hardenable.

The compression pressure is preferably chosen so high that the glass fibers in the glass fiber mat 5 are transferred into a package-like or stacked state.

After the punch cutting knife 21 has moved back into the original starting position, the compression punches 17 , 18 are released from the pressed closed, preferably rotating parts 23 , 24 and 34 , 35 of the glass fiber mat 5 .

Reference list

1 device
2 feed device
3 continuous fiberglass mat
4 pre-cutting device
5 glass fiber mat
6 transport device
7 heating station
8 pressing and punching station
9 distribution device
10 form punching tool
11 lower mold half
12 upper mold top
13 cutting line, cutting contour
14 through opening / hole
15 circular area
16 stamps
17 ′ double contour-shaped compression stamp
17 '' double contour-shaped compression stamp
18 ′ double contour-shaped compression stamp
18 ′ ′ double contour-shaped compression stamp
19 cutting gap (top)
20 cutting gap (bottom)
21 punch cutting knife
22 arrow direction
23 pressed part
24 pressed part
25 cutting blade
26 direction of arrow
27 superfluous edge area
28 inner knife wall
29 Knife outer wall
30 outer wall of the inner compression die
31 inner wall of the outer compression ram
32 uncompressed part of the glass fiber mat
33 preform
34 pressed part
35 pressed part

Claims (26)

1. Device for the production of glass fiber preforms from glass fiber continuous mats ( 3 ) for a subsequent aftertreatment, comprising a feed device ( 2 ) for glass fiber continuous mats ( 3 ), a pre-cutting device ( 4 ) and a transport device ( 6 ) for the transport of the cut glass fiber mats ( 5 ) via a heating station ( 7 ) to a pressing and punching station ( 8 ), characterized in that in the pressing and punching station ( 8 ) a form-punching tool ( 10 ) for deforming the glass fiber mat ( 5 ) into a preform ( 33 ) and for carrying out an outer trimming and optionally at least one inner trimming of predetermined cutting contours ( 13 , 14 ) of the glass fiber mat ( 5 ), which has at least one compression ram ( 17 , 18 ) with which each is spaced parallel, preferably along both sides the given cutting contours ( 13 , 14 ) the glass fiber mat ( 5 ) can be pressed, and each one of the pressing Eßstempel ( 17 , 18 ) assigned Stanzschneidmes water ( 21 ), which is arranged relative to the Verpreßstempel ( 17 , 18 ) movably arranged cutting. 2. Device according to claim 1, characterized in that the punch cutting knife ( 21 ) within the Verpreßstem pels ( 17 , 18 ), which presses the edge region ( 27 ) of the preform ( 33 ) parallel to the cutting line of the cutting contour ( 13 ) ver. 3. Device according to one of the preceding claims, characterized in that in the form punch ( 10 ) at least one press ram ( 16 ) for molding, in particular for the spatial deformation of the glass fiber mat ( 5 ) to a topographic element within the cutting contour ( 13 , 14 ) is available. 4. Device according to one of the preceding claims, characterized in that the stamp surface of the compression die ( 17 , 18 ), which is in contact with the glass fiber mat ( 5 ), is spatially formed. 5. Device according to one of the preceding claims, by in that the Verpreßstempel (17, 18) with substantially more pressure, the glass fiber mat (5) pressed as to deform the glass mat (5) for topographical element, before molding (33), is required. 6. Device according to one of the preceding claims, characterized in that in the die-cutting tool ( 10 ) the press ram ( 16 ) and at least one compression ram ( 17 , 18 ), in particular the compression ram ( 17 , 18 ) provided for the external trimming, is of a structural type Represent unit, wherein the press ram ( 16 ) slides within the compression ram ( 17 , 18 ). 7. Device according to one of the preceding claims, there characterized by that the compression punches in particular in cross section subject-shaped, preferably ring-shaped, or double contoured, preferably double ring-shaped are. 8. Device according to one of the preceding claims, characterized in that the cross-sectional compression die ( 17 , 18 ) consists of an inner and an outer compression die ( 17 ', 18 ', 17 '', 18 ''), which are slightly spaced from one another, the cutting gap ( 19 , 20 ) being guided between the two press rams ( 17 , 18 ) in such a way that the cutting line ( 13 ) runs in it. 9. Device according to one of the preceding claims, characterized in that the press ram ( 16 ', 16 '') for deforming the glass fiber mat ( 5 ) into a preform ( 33 ) within the compression ram ( 17 , 18 ) provided for the external trimming. is movably arranged. 10. Device according to one of the preceding claims, characterized in that the walls of the compression ram ( 17 , 18 ) are minimally spaced from the cutting line and the lines of the cutting blade of the punching cutting knife coincide with the cutting line. 11. Device according to one of the preceding claims, characterized in that the form punch ( 10 ) with a lower half For men ( 11 ) and an upper mold upper part ( 12 ) is designed from the opposite, preferably spatial pressing surfaces for deforming a have interposed glass fiber mat ( 5 ), and the lower mold half ( 11 ) and the upper mold upper part ( 12 ) each have at least one cutting gap ( 19 , 20 ) opening onto the pressing surface, which are arranged opposite one another, being in one the cutting column ( 19 , 20 ) is a movable punch cutting knife ( 21 ) which can be extended from the cutting gap ( 19 ; 20 ) for loading the glass fiber mat ( 5 ). 12. Device according to one of the preceding claims, characterized in that the glass fiber mat ( 5 ) is preferably pressed on both sides of the cutting gap ( 19 , 20 ) before the punch cutting process through the upper mold upper part ( 12 ) and the lower mold half ( 11 ). 13. The device according to one of the preceding claims, characterized in that in one of the cutting gaps ( 19 ; 20 ) of the cross-section double contour-shaped compression ram ( 17 , 18 ), the movable punching knife ( 21 ) has a feed drive which the punching knife ( 21st ) after the deformation of the glass fiber mat ( 5 ) leads to a preform ( 33 ) in the direction of the other cutting gap ( 20 ; 19 ) and the trimming of the uncompressed part ( 32 ) of the glass fiber mat ( 5 ) along the cutting line ( 13 ) in the cutting gap ( 19 , 20 ). 14. Device according to one of the preceding claims, characterized in that the punch cutting knife ( 21 ) has a separate feed drive before, with which the punch cutting knife ( 21 ) independently of the movement of the lower mold halves ( 11 ) and the upper mold part ( 12 ) the form punch ( 10 ) can be actuated. 15. The device according to any one of the preceding claims, characterized in that preferably the upper mold upper part ( 12 ) at least one in cross-section double-contour-shaped compression stamp ( 18 ) with an inner and an outer closed compression stamp ( 18 ', 18 '') contains , between which there is a circumferential cutting gap ( 19 ) in which the punch cutting knife ( 21 ) is movably arranged, and that the lower mold half ( 11 ) has an opposing, cross-sectionally double-contour-shaped Ver stamping ( 17 ) with a circumferential groove is provided, which is opposite the circumferential cutting gap ( 19 ) ge and preferably has its width, the punch cutting knife ( 21 ) can be guided into the groove. 16. The device according to any one of the preceding claims, characterized in that the pressing and deforming surfaces of the lower mold half ( 11 ) and the upper mold upper part ( 12 ) are spatially shaped, the cutting contours ( 13 , 14 ) on the interposed glass fiber mat ( 5 ) run spatially. 17. Device according to one of the preceding claims, characterized in that the cutting blade ( 25 ) of the punch cutting knife ( 21 ) is spatially shaped and the spatially shaped cut contour ( 13 ) is adapted. 18. Device according to one of the preceding claims, characterized in that the distance between the circumferential cutting gap ( 19 , 20 ) in the cross-sectionally shaped Ver press dies ( 17 , 18 ) is preferably about 2 to 3 mm. 19. Device according to one of the preceding claims, characterized in that the distance between the knife walls ( 28 , 29 ) of the punch cutting knife ( 21 ) and the adjacent walls ( 30 , 31 ) of the respective cross-sectionally double-cone compression dies ( 17 , 18th ) is preferably 0.3 to 0.5 mm. 20. Device according to one of the preceding claims, characterized in that in each case the two opposing compression punches ( 17 ; 18 ) of the lower mold half ( 11 ) and the upper mold upper part ( 12 ) are preferably displaceable in defined opposite opposing end positions. 21. A process for the production of a glass fiber mat preform from a glass fiber endless mat ( 3 ), from which at least one glass fiber mat ( 5 ) is cut off, which is transported by means of a transport device ( 6 ) via a heating station ( 7 ) to a pressing and punching station ( 8 ) is transported, according to one of the preceding claims, characterized in that in the pressing and punching station ( 8 ) a Glasfasermat te ( 5 ) between a lower mold half ( 11 ) and an upper mold upper part ( 12 ) of a mold punching unit Stuff ( 10 ) is fixed, then pressed to provided cutting lines ( 13 ; 14 ) preferably bilbstan det on both sides and then the two spaced, pressed parts ( 23 , 24 ; 34 , 35 ) in a cutting gap containing an unpressed part ( 32 ) ( 19 , 20 ) can be separated. 22. The method according to any one of the preceding claims, characterized in that the glass fiber mat ( 5 ) in a for trimming by a common operation within the outlining cutting line ( 13 ) by at least one deforming punch ( 16 ', 16 '') within for the external trimming responsible die ( 17 , 18 ) is deformed. 23. The method according to any one of the preceding claims, characterized in that the glass fiber mat ( 5 ) between the outer umlau fenden and the singular inner cutting lines ( 13 ; 14 ) is spatially deformed flat or topographically. 24. The method according to any one of the preceding claims, characterized in that the compression pressure exerted by the compression ram ( 17 , 18 ) leads the glass fibers located in the glass fiber mat ( 5 ) to a close contact, which by means of an added binder, which preferably consists of is hardenable, is reinforced. 25. The method according to any one of the preceding claims, characterized in that the compression pressure is preferably chosen so high that the glass fibers in the glass fiber mat ( 5 ) are transferred into a packet-like or stacked state. 26. The method according to any one of the preceding claims, characterized in that after the return movement of the punch cutting knife ( 21 ) in the original starting position, the compression punches ( 17 , 18 ) of the pressed closed, preferably peripheral parts ( 23 , 24 ) of the glass fiber mat ( 5th ) be solved.