EP1080798A2 - Device for removing resin residues from a metal press plate - Google Patents

Abstract

The device is for a metal press sheet acting as the boundary layer in the manufacture of multilaminar boars of resin-impregnated layers. The resin residue sticks to the sheet in the positioning aperture (4) region. The press sheet can be carried by a transporter (15) through a treatment cavity (16) with at least one integrated high-pressure water jet so that the resin residue is removed by the high pressure water jets, movable relative to the press sheet.

Description

The invention relates to a device for removing Resin residues on a metal press plate.

Such a press plate comes as a boundary layer at the Production of so-called multilayers for use, the find application in electronic circuits. The multilayer consist of several layers of resin-soaked Laminates in between two press plates a press device under the influence of heat become. Excess resin comes out especially in the area of the positioning openings sticks to the press plates.

So far you have the resin residues from the press plates manually removed with suitable scraping tools. This is, however, personnel and cost intensive. Also the cleaning success is not always satisfactory. Especially in resin sticks to the positioning openings of the press plates, which is disadvantageous when the press plate is used again is.

The invention is therefore based on the prior art based on the task of a powerful device for a reliable removal of resin residues and to clean a metallic press plate.

The solution to this problem consists in a device according to claim 1.

According to the invention, the press plate is transported by a means of transport carried through a treatment room. in the The treatment room is at least one high-pressure water nozzle unit integrated. By out of the nozzles of the high pressure water nozzle unit aimed at the press plate High-pressure water jets ensure reliable removal of the resin residues. It is essential that the nozzles are movable relative to the press plate. This can be longitudinal, transversely and / or rotationally. This is a targeted treatment of a press plate, especially in the strongly bonded areas around the Positioning openings in the press plate or on the edges, guaranteed. The invention makes use of this the basically known high pressure water technology own for cleaning the press plates.

According to the features of claim 2 are in the treatment room Nozzle units with at least two nozzles at a distance arranged to each other. In practice, the use of expedient two to eight nozzles. With this, the Areas around the positioning openings in the press plates are processed, in parallel. Usually four positioning openings are provided in the press plates, one on the front and one on the long sides. Accordingly, there are three in the treatment room, preferably four nozzle units are provided.

A particularly advantageous embodiment of the basic The inventive concept looks according to the characteristics of claim 3 before that the nozzle units a rotating Have a nozzle head with integrated nozzles. Preferably the nozzle head has two nozzles. The speed the nozzle heads are variable between 0 and 4000 RPM adjustable. Practical trials have very good ones Results with a speed of 2000 rpm result.

The nozzle units can be used with rotating nozzle heads transverse to the direction of movement of the press plate in the treatment room be moved. Treatment is carried out here especially in the area of the front and rear end faces of a press plate and a complete removal of the resin residues adhering here.

Depending on the hardness of the resin and the degree of contamination Press plates can be the distance between the nozzle units or Nozzles to the press plate can be varied and also the necessary Working pressure of the high pressure medium can be changed.

For possible resin residues on the top and bottom of a To remove press plates are according to claim 4 in the treatment room Nozzle units on both sides of the means of transport arranged so that a preferably time-parallel Machining the bottom and top of a Press plate is possible. With a horizontally guided Means of transport are therefore nozzle units below and provided above the transport level.

The arrangement of at least two nozzles, preferably two to eight nozzles, in the nozzle units it allows the water jets differ in terms of their angle of incidence align. In this context sees Claim 5 before that nozzles on the flat side of the Press plate and the surface of the positioning openings are directed. Machining the surface of the positioning holes makes sure that this too from here bonded resin residues are completely freed.

During cleaning, the press plates are replaced by the Treatment room moved by the means of transport. A suitable one The means of transport is a roller conveyor. That at the Treatment applied water can go down very well drain and be collected there. The location orientation the press plate is made by appropriate Pinch rollers that press the press plate against the means of transport press and thus slipping during the high pressure water treatment avoid.

The nozzle units are transverse to the direction of movement of the press plate movable (claim 6) so that it during the cleaning process over the surfaces to be treated can be moved back and forth. Preferably, the Cycle time and stroke length adjustable.

Due to the mechanical force of the high pressure water the resin residues removed from the press plate. Guaranteed here the relative movement between the press plate and the high pressure water jets a complete removal.

The operating pressure of the high pressure water is between 500 bar and 2750 bar, the distance between the nozzles and Press plate can be between 1 mm and 80 mm. Conveniently the distance between the nozzles is adjustable.

Resin residues detached from the press plate but still adhering or particles are after the high pressure water treatment washed. This is done in a rinsing station (Claim 7), in which the press plates preferably be gushed like a surge.

In a further operation, the press plates are made wet brushed. For this, the nozzle units according to the Features of a brush station downstream, which holds one or more brushes. In the Brushing station are preferably both the top and also brushed the underside of the press plates. Here brushes made of abrasive fleece are used.

The press plates are connected to the brush station washed off again in a rinsing station and then in a dryer station dried (claim 9). The drying is preferably done using warm air. About one Spout leaves a cleaned press plate then the device.

The entire process water from high pressure cleaning, the Brushing station and the rinsing stations is collected and processed. The resin residues and other solid particles are in suitable filters, for example Belt or bag filters, separated. The processed Water can then be used again. For this the water according to claim 10 in a circulatory system with integrated filters.

The advantageous development according to claim 11 before that a negative pressure can be generated in the treatment room is. This way, you can change the editing with the water or Clouds of mist are removed from the treatment room. In this context, it is useful to have the treatment room to seal appropriately from the atmosphere. The inlet and outlet of the press plates in or from the treatment room then takes place via an inlet chamber and an outlet chamber, the openings of which by means of Strip brushes or the like, an appropriate Sealing agent ensuring the sealing function are.

Figur 1

eine schematische Darstellung einer erfindungsgemäßen Vorrichtung in der Seitenansicht mit der Darstellung des Wasserkreislaufs;

Figur 2

einen horizontalen Schnitt durch den Hochdruckautomaten der Vorrichtung;

Figur 3

die Darstellung gemäß Figur 2 in der Seitenansicht;

Figur 4

den Ausschnitt IV gemäß Figur 2 in vergrößerter Darstellungsweise;

Figur 5

einen vertikalen Längsschnitt durch einen Hochdruckautomaten einer weiteren Ausführungsform einer erfindungsgemäßen Vorrichtung und

Figur 6

in vergrößerter Darstellungsweise in der Seitenansicht eine Hochdruckwasserdüseneinheit der Ausführungsform gemäß Figur 5.

The invention is described below with reference to an embodiment shown in the drawings. Show it:

Figure 1

a schematic representation of a device according to the invention in side view with the representation of the water cycle;

Figure 2

a horizontal section through the high pressure machine of the device;

Figure 3

the representation of Figure 2 in side view;

Figure 4

the section IV of Figure 2 in an enlarged representation;

Figure 5

a vertical longitudinal section through a high pressure machine of a further embodiment of a device according to the invention and

Figure 6

5 shows an enlarged representation of the side view of a high-pressure water nozzle unit of the embodiment according to FIG. 5.

1 shows a device in a technically simplified manner 1 for removing resin residues on a metallic Press plate 2 including the representation of the water cycle, designated 3 in its entirety.

A press plate 2 is shown in more detail in FIGS. 2 and 3. Such press plates 2 come during manufacture of so-called multilayers. They form here the upper and lower limits of a package of several Layers of laminates, e.g. Hard paper on Epoxy resin base, which is exposed to heat in a press get connected. There are positioning openings in the press plate 2 4-7 available for precise alignment of the press plates 2 to each other and that received between them Locations. One occurs during the pressing process Excess resin, which is particularly in the Area of the positioning openings 4-7 on the press plates 2 is liable and glued. The resin residues are in the figures 2 to 4 designated 8.

The device 1 essentially comprises an automatic high-pressure machine 9 with downstream rinsing station 10, a brushing station 11, which in turn is a rinsing station 12 is connected downstream and a dryer station 13.

A press plate 2 soiled with resin residues 8 becomes fed to the device 1 via a task 14. Here it becomes a means of transport in the form of a roller conveyor 15 through a treatment room 16 of the high-pressure machine 9 worn. The roller conveyor 15 has lower driven ones Carrying rollers 17 and upper pressure rollers 18. The press plate 2 is from the roller conveyor 15 during treatment passed continuously through the device 1.

In the treatment room 16, as shown in FIG. 2, three high-pressure water nozzle units 19, 20, 21 arranged. The nozzle units 19, 20, 21 are in the treatment room 16 both in the longitudinal direction and in the transverse direction of the press plate 2 seen at a distance from each other attached and in each case to the position of the positioning openings 4-7 matched accordingly. The nozzle unit 19 processes the area of the positioning openings 4 and 7 one after the other while passing through the press plate 2 while the nozzle units 20 and 21 each the area around the Clean positioning openings 5 and 6 in parallel.

For reasons of increased performance, however, the Arrangement of another high pressure water nozzle unit be sensible so that all four positioning openings 4-7 of the press plate 2 processed simultaneously in the treatment room 16 can be.

Each high pressure water nozzle unit 19, 20, 21 comprises two Nozzles 22, 23, as illustrated schematically in FIG. 4. For reasons of clarity is in Figure 3 in each case only one nozzle 23 shown. The nozzle 22 is like this aligned that the flat side 24 of the press plate 2 machined at an angle of essentially 90 °, while the second nozzle 23 is inclined at an angle. This angular adjustment of the nozzles 22, 23 relative to one another ensures that both the flat side 24 of the Press plate 2 and the surface 25 of the positioning openings 4-7 processed by the high pressure water jets 26 and resin residues 8 can be reliably removed.

During the cleaning process, the nozzles 22, 23 together with the nozzle units 19-21 transverse to the direction of movement P of press plate 2 moves (arrow Q). This relative movement represents a complete editing of the The positioning openings 4-7. The hydromechanical Power of high pressure water with one pressure of up to 2750 bar leads to a reliable and complete removal of resin residues 8.

The removed resin particles are carried along by the water. The water then passes through a collecting trough 27 below the treatment room 16 by a first one Partial circuit 28 of the water circuit 3 to a filter 29, where it is freed from solid particles. Subsequently the water is pumped in by a high pressure pump 30 in recycled the circuit 28.

This runs after the treatment room 16 Press plate 2 into the rinsing station 10. Here it becomes gushing washed and fed to the brushing station 11. The Wash water is collected in a collecting pan 31 and the downstream processing in the sub-circuit 28 supplied.

In the brushing station 11, the entire surface of the Press plate 2 mechanically due to the action from below and brushes arranged above the press plate 2 32 and 33 cleaned. Corresponding counter rolls 34 and 35 ensure a sufficiently high pressure. The brushing takes place under the action of water, which via nozzles 36 is sprayed into the zone of action of the brushes 32 and 33, respectively.

The wash water obtained in the brushing station 11 becomes via a collecting pan 37 of the treatment in a second Partial circuit 38 of the water circuit 3 with integrated Filter 39 supplied.

After leaving the brushing station 11, this happens Press plate 2 in the rinsing station 12, where it was washed off again becomes. The wash water is also in a collection pan 40 collected, the sub-circuit 38 fed and processed in the filter 39.

The press plate 2 is then in the dryer station 13 dried. This is in the dryer station 13, a warm air blower 41 is provided. The warm air is fed to a separate dryer chamber 42. During the run of the press plate 2 through the dryer chamber 42 this then dried from the warm air.

Optionally, a blowing and Suction station 43 may be provided. By a directed Blowing jet can the positioning openings 4-7 if necessary additionally be blown out.

This is completely cleaned via an outlet 44 Pressed sheet 2 pulled out of device 1.

An alternative embodiment of a high pressure machine 45 is shown in FIG. 5. Components that are fundamentally correspond to the type described above, wear the same reference numerals. A high pressure water nozzle 46 of the high-pressure machine 45 is shown in FIG enlarged representation.

A press plate 2 to be cleaned becomes the device 1A fed via task 14 and passes through an inlet chamber 47 in the treatment room 16 of the high-pressure machine 45. It can also be seen here that the press plates 2 on a roller conveyor 15 as a means of transport with lower driven idler rollers 17 and upper pressure rollers 18th be moved.

In the treatment room 16 there are a total of four high-pressure water nozzle units 46A-46D arranged, two above and two below the roller conveyor 15 based on the transport level TE of the press plates 2. Through the high-pressure water nozzle units 46A and 46B becomes the top of a press plate 2 and through the high-pressure water nozzle units 46C and 46D becomes the bottom of one Press plate 2 processed.

Each high pressure water nozzle unit 46A-46D includes one Nozzle head 48 with two nozzles 49, 50 arranged therein (see also Figure 6).

Such a nozzle head 48 has a diameter of 50 mm. In operation, the nozzle head 48 rotates and with it the nozzles 49, 50 (arrow R) at a speed of 2000 rpm. Practical are speeds up to 4000 rpm.

Each high pressure water nozzle unit 46A-46D can be attached to one Traverse 51 by means of a linear drive 52 transverse to the direction of movement P of a press plate 2 are moved. In 5 are a spindle drive with 53 and 54 each designated two guide rods of the linear drive 52.

The transverse movement Q is used with the nozzle head 48 rotating Cleaning the area of the front and rear End faces of a press plate 2. The long sides of the Press plate 2 are cleaned with the nozzle head rotating, by pressing plate 2 along the high pressure water nozzle units 46A-46D in the longitudinal direction of the high pressure machine 45 is moved, but without this moving transversely become. When passing through the press plate 2, the resin residues due to the rotating towards the press plate 2 High pressure water jets 55 milled hydromechanically.

A cleaned room leaves the treatment room 16 Press plate 2 via an outlet chamber 56. It can be seen in 5 that both at the inlet gap 57 of the inlet chamber 47 and at the outlet gap 58 of the outlet chamber 56 a sealing lip arrangement as strip brushes 59 and 60 are arranged. In the treatment room 16 there is a Negative pressure can be generated. This can help with cleaning of the press plates 2 resulting mist of water is suctioned off become. Suction channels in the treatment room 16 are included 61 designated. The inlet chamber 47 and the outlet chamber 56 can be connected to the suction. The suction channels there have the reference symbol 62.

The treatment room 16 is from the top of the high pressure machine 45 forth over two pivotally arranged Flaps 63 accessible.

The dirty washing water is in the collecting tub 27 caught and by a filter system, not shown here passed in which the solid particles separated become. These can be filled into bags, for example be disposed of as special waste. The wash water is after the cleaning process so clean that it can be used again or can be drained into the sewage system.

The high-pressure machine 45 is followed by a brushing station 11. These reach the press plates 2 after leaving of the treatment room 16. By the brushes 33 of the Brush station 11 is the entire top or bottom of a press plate 2 mechanically cleaned or cleaned.

List of reference symbols

1 -

contraption

1A device

2 -

Pressed sheet

3 -

Water cycle

4 -

Positioning opening

5 -

Positioning opening

6 -

Positioning opening

7 -

Positioning opening

8th -

Resin residue

9 -

High pressure machine

10 -

Rinsing station

11 -

Brush station

12 -

Rinsing station

13 -

Dryer station

14 -

task

15 -

Roller conveyor

16 -

Treatment room

17 -

Idlers

18 -

Pinch rollers

19 -

High pressure water nozzle unit

20 -

High pressure water nozzle unit

21 -

High pressure water nozzle unit

22 -

jet

23 -

jet

24 -

Flat side

25 -

Surface v. 4-7

26 -

High pressure water jets

27 -

Collecting tank

28 -

Subcircuit v. 3rd

29 -

filter

30 -

high pressure pump

31 -

Collecting tank

32 -

brush

33 -

brush

34 -

Counter roll

35 -

Counter roll

36 -

jet

37 -

Collecting tank

38 -

Subcircuit v. 3rd

39 -

filter

40 -

Collecting tank

41 -

Warm air blower

42 -

Dryer chamber

43 -

Blow u. Suction station

44 -

Spout

45 -

High pressure machine

46 -

High pressure water nozzle unit

46A - high pressure water nozzle unit

46B - high pressure water nozzle unit

46C - high pressure water nozzle unit

46D - high pressure water nozzle unit

47 -

Inlet chamber

48 -

Nozzle head

49 -

jet

50 -

jet

51 -

traverse

52 -

linear actuator

53 -

Spindle drive

54 -

Guide rods

55 -

High pressure water jets

56 -

Outlet chamber

57 -

Entrance gap

58 -

Exit gap

59 -

Strip brush

60 -

Strip brush

61 -

Suction channel

62 -

Suction channel

63 -

flap

P -

Direction of movement

Q -

Lateral movement

R -

revolution

TE -

Transport level

Claims (11)

Device for removing resin residues on a metal press plate (2), which is used as an interface in the production of multilayers consisting of several resin-impregnated layers, the resin residues (8) particularly in the area of positioning openings (4-7) on the press plate (2 ), characterized in that the pressing plate (2) is carried by a means of transport (15) through a treatment room (16) with at least one high-pressure water nozzle unit (19-21; 46A-46D) integrated therein, with the resin residues (8) being removed high-pressure water jets (26; 55) directed onto the press plate (2) can be guided, the nozzles (22, 23; 49, 50) being movable relative to the press plate (2). Device according to Claim 1, characterized in that nozzle units (19-21; 46A-46D) with at least two nozzles (22, 23; 49, 50) are arranged at a distance from one another in the treatment room (16). Apparatus according to claim 1 or 2, characterized in that the nozzle units (46A-46D) have a rotating nozzle head (48) with integrated nozzles (49, 50). Device according to one of claims 1 to 3, characterized in that in the treatment room (16) nozzle units (46A-46D) are arranged on both sides of the transport means (15) with respect to the transport plane (TE) of the press plates (2). Device according to one of claims 1 to 4, characterized in that nozzles (22, 23) are directed towards the flat side (24) of the press plate (2) and / or the surface (25) of the positioning openings (4-7). Device according to one of claims 1 to 5, characterized in that the nozzle units (19-21; 46A-46D) are movable transversely to the direction of movement (P) of the press plate (2). Device according to one of claims 1 to 5, characterized in that a rinsing station (10, 12) is connected downstream of the nozzle units (19-21). Device according to one of claims 1 to 5, characterized in that a brush station (11) is connected downstream of the nozzle units (19-21; 46A-46D). Device according to one of claims 1 to 8, characterized in that a dryer station (13) is connected downstream of the nozzle units (19-21). Device according to one of claims 1 to 9, characterized in that the water mixed with resin residues (8) can be treated in a circulation system (3) with integrated filters (29, 39). Device according to one of claims 1 to 10, characterized in that a negative pressure can be generated in the treatment room (16).

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