DE102005056630A1 - Producing a shaped product comprises pressing out a flat part of the product and compressing the flat part with another part that completes the product - Google Patents

Abstract

Producing a shaped product comprises pressing out a flat part of the product and compressing the flat part with another part that completes the product. An independent claim is also included for for a shaped product produced as above, where the flat part is an inlay of low-value material and the other part is an outer shell of high-value material.

Description

The The invention relates to a method for pressing a molded part, in particular a toilet seat or a toilet lid, and one after this procedure manufactured molding.

at high-quality toilet fittings pass very high demands on the Production quality, in particular the visible surface texture and the stability of the toilet seat and of the toilet lid. Made in the press process sets must therefore very thick-walled with correspondingly high material and production costs be educated.

A known pressing method for producing a toilet seat or a toilet lid is in the utility model DE 92 03 271 U1 the applicant described. In this case, a cavity of a mold is filled with a synthetic resin molding compound, which is then pressed to a toilet seat or toilet lid. A disadvantage of this solution is that only relatively thin-walled molded part can be pressed. Another difficulty is that in particular the demoulding in the area of the seat for the seat joints is very difficult and therefore requires considerable effort in the design of the mold.

To form thick-walled toilet seats beats the DD 236 522 to cover a voluminous core with a thin outer skin, which is applied by injection molding. However, it is disadvantageous in this solution that the injection molding process requires a tool-technically high outlay. Furthermore, it is disadvantageous that the surface of the core must be very smooth in order to prevent its structure from being reflected in the outer skin.

In contrast, lies The invention is based on the object, a method and a thereafter to create a molded part that is easy to manufacture at high quality enable.

These Task is solved by a method according to claim 1 and a molded part, in particular a Toilet seat or a toilet lid, according to claim 7.

One inventive method for pressing a molding, in particular a toilet seat or a WC lids looks before, a first, a surface area of the molding forming molding to presses and this afterwards with a second shaped body to be pressed, which complements the first molded body to the molding. This Method has the advantage that the molding be made very thick walls can, as this in several moldings is divided and the shaped body be pressed together so that the wall thickness of Form part composed of the individual wall thicknesses of the moldings.

at a preferred embodiment is the first molded body an inlay of a relatively inferior material and the second shaped body an outer shell from a comparatively high quality material.

to increase stability The molding can be a core before the compression of the two moldings be inserted into the mold, the shell-like of both moldings is enclosed. Preferably, the core is made of a material with a higher one temperature resistance as the materials of the moldings.

at an embodiment are difficult demoulding areas, such as the inclusion of seat joints for articulated connection of the toilet lid with the toilet seat, essentially on one of the moldings intended. To the outer shell high quality exterior viewing surfaces too lent, the Entformungen are preferably formed in the inlay.

The Manufacturing costs of the molding can be reduced when pressing the molded body and their compression in a mold with a common top and a sliding table with two cavities, wherein the one cavity for pressing the first molded body and the second cavity for pressing the second molded body and its compression provided with the first molded body to the molding is.

One Inventive molding has an inlay of comparatively inferior material and a with it pressed outer shell from a high-quality material, whereby in a first step the Inlay pressed and in a subsequent step the outer shell pressed and pressed with the inlay.

preferably, wrap the inlay and the outer shell a core, for example, made of a wood-like material, a filler-containing thermoplastic material, a filler Thermoset material or of a hybrid material of plastic and cardboard.

other advantageous embodiments The invention are the subject of further subclaims.

in the Below is a preferred embodiment of the invention based schematic representations closer explained. Show it:

1 a mounted toilet set with a toilet lid according to the invention,

2 a bottom view of the toilet cover 1 .

3 a section through a longitudinal side portion of the toilet lid 2 .

4 a bottom view of an inlay of the toilet lid 2 .

5 a section through a narrow side portion of the toilet lid 2 .

6 a mold for the production of the toilet lid 2 .

7 a bottom view of a first cavity of a sliding table 6 .

8th a section through the mold from 6 along the line AA 7 in an open working position,

9 a section through the mold from 6 along the line AA 7 in a closed working position,

10 a section through the mold from 6 off along the BB line 7 in a closed working position,

11 a section through the mold from 6 along the line AA 7 in a pressing position,

12 a section through the mold from 6 along the line AA 7 in an open working position,

13 a bottom view of a second cavity of the sliding table 6 .

14 a section through the mold from 6 off along the CC line 13 in an open working position with sliders in an initial position,

15 a section through the mold from 6 off along the CC line 13 in a closed working position with sliders in an initial position,

16 a section through the mold from 6 along the line DD 13 in a closed working position with a slider in an initial position

17 a section through the mold from 6 off along the CC line 13 in a closed working position with sliders in an end position,

18 a section through the mold from 6 off along the CC line 13 in a pressing position, and

19 a section through the mold from 6 off along the CC line 13 in an open working position.

1 shows a perspective schematic representation of a toilet 2 with a toilet set 4 standing at a toilet ceramics 6 is attached. In a rear area of the toilet ceramics 6 is a cistern 8th intended. The toilet set 4 has a toilet lid according to the invention 10 and a toilet seat 12 that over seat joints 14 . 16 hinged to the toilet ceramic 6 are stored. The toilet lid 10 has four supports 18a to 18d with which he placed in a lowered position not shown on the toilet seat 12 rests and an opening 20 to be easily lifted by a user.

According to 2 has the toilet lid 10 an approximately rectangular bottom surface 22 from which the supports 18a to 18d extend, and a circumferential, tapering towards its front edge wall 24 running along a narrow backside 26 is cut out. The wall 24 has a substantially perpendicular to the bottom surface 22 extending inner circumferential surface 28 and an inclined outer circumferential surface 30 , With their free end sections in the area of the rear narrow side 26 go the wall 24 in each case a joint section 32 . 34 (see. 7 and 13 ) over, in their front sides 36 one joint hole each 38 for receiving a seat hinge pin (not shown) is formed.

To 3 making a section along the line XX through a longitudinal side portion of the toilet lid 10 out 2 shows, has the toilet lid 10 an inlay 40 and an outer shell 42 on. The inlay 40 forms the bottom surface 22 and the supports 18a to 18d from, where it is like a shell of the outer shell 42 it is encompassed that it is closed with the toilet lid 10 is not visible. The inlay 40 and the outer shell 42 are made by pressing, with the inlay 40 preferably of an inferior material and the outer surface forming a visible surface area 42 consists of a higher quality material.

As in 4 shown has the inlay 40 a rectangular shape with a peripheral edge 44 that runs along the back narrow side 26 of the toilet lid 10 is cut out and the inner peripheral surface 28 as well as the joint sections 32 . 34 formed. The edge 44 has one of the inner peripheral surface 28 opposite inclined surface 46 which is about half its height h (cf. 3 ) and in the direction away from the ground surface 22 leaking, taking in a vertical surface 47 passes.

Thus, the edge 44 of the inlay 40 near the bottom surface 22 formed reinforced material, wherein in the outer shell 42 a like in 3 shown undercut 49 is provided, which is a loosening of the inlay 40 and the outer shell 42 additionally prevented.

The outer shell 42 encompasses according to 3 the inlays 40 cupped, leaving a rim 48 has that of the bevel 46 and the vertical surface 47 remote outer peripheral surface 30 forms. Furthermore, the outer shell has 42 one from the bottom surface 22 opposite large-scale outer surface 52 , which together with the outer peripheral surface 30 the visible surface area of the toilet set 4 form, the lowered toilet lid 10 are visible. Here is the outer peripheral surface 30 so hired that the edge 48 in the area of the undercut 49 about a constant wall thickness W1 has.

According to 5 making a cut along the line YY through one of the rear narrow side 26 removed front narrow side 54 of the toilet lid 10 out 2 shows is the undercut 49 circumferential, with the wall 24 of the toilet lid 10 in the area of the front narrow side 54 in comparison to the longitudinal side areas according to 3 designed with greater wall thickness. It is both the edge 44 near its bottom surface 22 as well as the edge 48 executed overall with greater wall thickness, the edge 48 in the area of the undercut 49 has an approximately constant wall thickness W2.

The toilet lid according to the invention 10 is after 6 in a mold 56 with a common shell 58 and a sliding table 60 with two cavities 62 . 64 made in accordance with the double arrow P1 in the horizontal direction vefahrbar. According to the invention, the pressing of the inlay takes place 40 in the first cavity 62 and pressing the outer shell 42 and the compression of the outer shell 42 with the inlay 40 in the second cavity 64 , wherein for both pressing or pressing operations, the common upper part 58 is used.

The top 58 includes a stamp 68 in accordance with the double arrow P2 in the vertical direction in a U-shaped frame 66 is guided. The frame 66 is according to the double arrow P3 also movable in the vertical direction and has three cheeks 70 . 72 . 74 ,

The Stamp 68 has according to 8th , to which reference is already made, a head section 78 with a face 80 when pressing the inlay 40 and the outer shell 42 into the cavities 62 . 64 dips. The head section 78 has to form the joint sections 32 . 34 two recesses 82 , of which due to the selected cutting line only one of the recesses 82 for forming the joint section 34 is visible. For the formation of the respective joint bore 38 the joint sections 32 . 34 is in the head section 78 a movable core pin 84 guided in the horizontal direction in sections in the recess 82 can be driven into it. To form the opening 20 is frontally in the head section 78 a blind hole 86 provided, in which a peg-like elevation 88 the sliding table 60 when lowering the top 58 dips. Furthermore, in the head section 78 four recesses at the front 90 for the formation of the columns 18a to 18d intended.

According to 7 taking a bottom view on the cavity 62 the sliding table 60 represents in which the inlay 40 is arranged, has the sliding table 60 a lower part 92 on which a left slider 94 , a right slider 96 and a front slider 98 for limiting the first cavity 62 are arranged. In the area of the rear narrow side 26 of the toilet lid 10 becomes the cavity 62 from a wall section not shown in this figure 76 limited, extending from the base 92 extends in the direction of the punch (see 10 ).

The sliders 94 . 96 . 98 can be moved towards and away from each other according to the double arrows, whereby they can be transferred from an initial position, not shown, into the illustrated end position and vice versa. For the formation of the inclined surface 46 are the sliders 94 . 96 . 98 each with an undercut 100 . 102 . 104 Mistake.

For pressing the inlay 40 will be in the in 8th shown open working position in which the upper part 58 raised and the sliders 94 . 96 are transferred to their final position, a molding compound for the inlay 40 in the first cavity 62 filled. Subsequently, the upper part 58 lowered until the cheeks 70 . 72 on the sliders 94 . 96 rest and the survey 88 in the blind hole 86 dips ( 9 ). Likewise, according to 10 in this position, the cheek 74 on the slide 98 on. Then the stamp 68 lowered and according to its pressing position 11 transferred, so that the material to the inlay 40 with the joint sections 32 . 34 , the supports 18a to 18d as well as the edge 44 is pressed.

According to 12 be after pressing the inlay 40 the sliders 94 . 96 moved apart in their initial position and the top 58 raised to the stamp 68 from the first cavity 62 to drive. Likewise, the front slider 98 moved back and brought to its initial position (not shown). The moving apart of the slide 94 . 96 . 98 is necessary to the inlay 40 from the first cavity 62 to be able to lift, as it is due to the inclined surface 46 in the undercuts 100 . 102 . 104 (see. 7 ) in the first cavity 62 "wedged" is. The core pin 84 remains extended and the inlay 40 will with the stamp 68 from the first cavity 62 lifted.

13 shows a bottom view of the sliding table 60 in the area of the second cavity 64 in which a pressed toilet lid 10 is arranged (dashed line). The second cavity 64 is from a left slider 106 , a right slider 108 and a front slider 110 limited, each according to the double arrows from an initial position not shown in an end position shown and vice versa on the lower part 92 are movable. In the area of the narrow side 26 of the toilet lid 10 becomes the second cavity 64 from one of the lower part 92 in the direction of the stamp 68 extending, not shown in this figure wall section 77 limited (cf 16 ). To form the oblique outer peripheral surface 30 are the sliders 106 . 108 . 110 each with an undercut 112 . 114 . 116 Mistake.

To prevent that during pressing the material in the blind hole 86 of the stamp 68 enters, extends according to 14 from the lower part 92 a cone-like elevation 118 when closing the mold 56 in the blind hole 86 dips.

For pressing the outer shell 42 and for pressing the outer shell 42 with the inlay 40 becomes the sliding table 60 from his in 12 shown position shifted to the right until the stamp 68 according to 14 the second cavity 64 opposite. Then the second cavity 64 with a molding compound for the outer shell 42 filled. Subsequently, the upper part 58 from the raised and open working position into the 15 shown closed working position, in which the cheeks 70 . 72 on the sliders 106 . 108 rest and the survey 118 in the blind hole 86 dips. Here are the slides 106 . 108 still in their starting position. Likewise, according to 16 in this position, the cheek 74 on the front slider 110 on. Then the slides 106 . 108 from their in 15 shown initial positions moved towards each other and in their respective in 17 transferred shown end position. Likewise, the front slider 110 from his in 16 shown initial position moves to its end position (not shown). Then the stamp 68 by lowering into his in 18 shown pressed position, in which the outer shell 42 pressed and simultaneously with the inlay 40 is pressed. For producing a particularly strong connection between the inlay 40 and the outer shell 42 It is advantageous if the inlay 40 when pressing with the outer shell 42 not fully cured yet.

For demolding of the molding is according to 19 after pressing the toilet lid 10 the cavity 64 or the mold 56 by lifting the shell 58 or the stamp 68 open, with the core pin 84 in the head section 78 of the stamp 68 before opening the mold 56 is moved back until he has the joint hole 38 releases, leaving the inlay 40 and thus the toilet lid 10 from the stamp 68 is dissolved and in the cavity 64 remains lying. To remove the pressed WC lid 10 from the cavity 64 become the sliders 106 . 108 moved apart from their final position and transferred to their initial positions, so that the undercuts 112 . 114 from the outer peripheral surface 30 of the pressed WC lid 10 are spaced. Likewise, the front slider, not shown 110 transferred to his starting position.

In an embodiment of the invention, not shown, when pressing the toilet lid 10 a nucleus in the cavity 62 respectively. 64 inserted, the shell-like from the inlay during pressing 40 and the outer shell 42 is enclosed. The core increases the stability of the toilet lid 10 and is preferably made of a material having a higher temperature resistance than the material of the inlay 40 and the outer shell 42 , Exemplary core materials are werzalit ^{®, ®} Harolith, MDF, wood, thermoplastic and thermosetting plastic with filler and hybrid material made of plastic and cardboard. Furthermore, the core has the advantage that the material for the production of the inlay 40 and the outer shell 42 is reduced and that due to the reduced wall thickness of the inlay 40 and the outer shell 42 the cycle times for the production of the toilet lid 10 are shortened because less material has to cure. Another advantage of the core is that in comparison to the above-described embodiment with two moldings 40 . 42 even thicker wall thicknesses of the toilet lid 10 Furthermore, it is conceivable, a molding 10 made of more than two moldings 40 . 42 to produce with the method according to the invention.

Disclosed is a method for pressing a molded part, in particular a toilet seat or a toilet lid, wherein in a first step first, a surface region of the molding forming molding is pressed and in a subsequent step, the molding with a second molded body, which is supplemented with the first molding to the molding, is pressed. Further disclosed is a molded part, which is produced by such a method and has an inlay made of a comparatively inferior material and an outer shell pressed therefrom of a comparatively high-quality material.

2

WC

4

WC set

6

WC ceramics

8th

cistern

10

cover

12

Seat

14

seat hinge

16

seat hinge

18

support

20

opening

22

floor area

24

wall

26

rear narrow side

28

Inner circumferential surface

30

Outer circumferential surface

32

hinge section

34

hinge section

36

front

38

pivotal hole

40

inlay

42

outer shell

44

edge

46

sloping surface

47

vertical space

48

edge

49

undercut

50

large area

52

outer surface

54

front narrow side

56

mold

58

top

60

sliding table

62

first cavity

64

second cavity

66

frame

68

stamp

70

cheek

72

cheek

74

cheek

76

wall section

77

wall section

78

header

80

face

82

recess

84

core pin

86

Blind hole

88

survey

90

Ausehmung

92

lower part

94

left pusher

96

right pusher

98

front pusher

100

undercut

102

undercut

104

undercut

106

left pusher

108

right pusher

110

rear pusher

112

undercut

114

undercut

116

undercut

118

survey

Claims (12)

Method for pressing a molded part ( 10 ), in particular a toilet seat or a toilet lid with the steps: - pressing a first, a surface area ( 22 . 28 ) of the molded part ( 10 ) forming shaped body ( 40 ), - pressing the first shaped body ( 40 ) with a second shaped body ( 42 ), which interacts with the first shaped body ( 40 ) to the molded part ( 10 ) added. Method according to claim 1, wherein the first shaped body ( 40 ) an inlay of comparatively inferior material and the second shaped body ( 42 ) a high quality outdoor viewing area ( 30 . 52 ) forming outer shell is. A method according to claim 1 or 2, wherein prior to the compression of the two shaped bodies ( 40 . 42 ) a core in the mold ( 56 ) is inserted, of both moldings ( 40 . 42 ) is enclosed like a bowl. A method according to claim 3, wherein the core is made of a material having higher temperature resistance than the materials of the molded articles ( 40 . 42 ). Method according to one of the preceding claims, wherein components of the molded part requiring demoulding ( 10 ) substantially at one of the shaped bodies ( 40 ) are provided. Method according to one of the preceding claims, wherein the pressing of the shaped bodies ( 40 . 42 ) and their compression in a mold ( 56 ) with a common upper part ( 60 ) and a sliding table ( 60 ) with a cavity ( 62 ) for the first molded first molded body ( 40 ) and with a cavity ( 64 ) for pressing the second shaped body ( 42 ) and its compression with the first shaped body ( 40 ) to the molded part ( 10 ) Has. Molded part produced by a method according to one of the preceding claims, with egg inlay ( 40 ) of comparatively inferior material and an outer shell pressed therewith ( 42 ) made of high quality material. A molding according to claim 7, wherein the inlay ( 40 ) and the outer shell ( 42 ) envelop a core. A molding according to claim 8, wherein the core consists of a woody material is. A molding according to claim 8, wherein the core consists of a fillercontaining Thermoplastic material is. A molding according to claim 8, wherein the core consists of a fillercontaining Duroplast material is. A molding according to claim 8, wherein the core consists of a Hybrid material is plastic and paper.