DE202013103236U1 - Slider for a foaming tool - Google Patents

Abstract

A slider (100) for a foaming tool, the slider (100) having a first slide part (102) retractable into a foaming cavity (106) of the foaming tool in a first direction (112), the first slide part (102) being laterally from the first slide part (102) has a projecting second slide part (104), wherein the second slide part (104) is designed to limit the foam cavity (106) of the foaming tool, wherein the slide (100) has a wedge (108), wherein the wedge (108) in a first direction (112) to the foaming cavity (106) and from the foaming cavity (106) is arranged translationally displaceable on the slide (100), wherein the wedge (108) engages behind the first slide part (102), wherein the first slide part (102) in a second direction (110) perpendicular to the first direction (112) by the wedge (108) slidably disposed on the slider (100).

Description

The invention relates to a slide for a foaming tool and a foaming tool with a slider.

Various devices for the foaming of components are known from the prior art. For example, corresponding devices are in the DE 10 2005 026 730 A1 and in the DE 10 2004 008 412 A1 described. Foaming tools have a foaming cavity into which a foam can be introduced. The cavity limits the expansion of the foam, so that after curing of the foam in the foam cavity a finished workpiece is present. As a result of the so-called demoulding process, all, in particular undercut, tool parts are removed from the foaming cavity in order to remove the finished workpiece from the cavity.

By means of so-called slides, volume areas of the foam cavity can be blocked or released in order to influence the shaping of the workpiece to be produced by the foaming process. So it is necessary, in particular in the production of an undercut workpiece to define by appropriate slide the undercut in the cavity. After completion of the foaming process, the tool parts connected to the slider must be moved out of the undercut of the workpiece produced, so as to enable first a demoulding of the workpiece from the cavity.

The invention has for its object to provide an improved slider for a foam tool and an improved foam tool with a corresponding slider. The objects underlying the invention are described by the claims according to the independent claims. Preferred embodiments of the invention are described in the dependent claims.

The invention relates to a slider for a foaming tool, wherein the slider has a first slide part retractable in a foaming cavity of the foaming tool in a first direction, the first slide part having a second slide part projecting laterally from the first slide part, the second slide part limiting a foaming cavity of the foaming cavity Foaming tool is formed. The slider has a wedge, wherein the wedge in a first direction to the foaming cavity and away from the foaming cavity is arranged translationally displaceable on the slide, wherein the wedge engages behind the first slide part. Further, the first slide member is arranged in a second direction perpendicular to the first direction by the wedge displaceable on the slider.

Embodiments of the invention could have the advantage that in a mechanically simple manner, a low-wear slider for a foaming tool can be provided, with which undercut workpieces can be formed. Due to the trailing guide of the wedge on the first slide part can be dispensed with in particular folding mechanisms and axial bearings with respect to the second slide part, wherein the second slide part is responsible for the production of the undercut. Thus, for example, instead of folding out the second slide part from the undercut region of the workpiece, the translatory movement of the first slide part in the second direction is generated by the translational movement of the wedge in the first direction, as a result of which the second slide part is pulled out of the undercut.

According to one embodiment of the invention, the slider on two of the first slide parts, wherein these are arranged opposite to each other and separated by the wedge. Thus, it could be possible to simultaneously move two or more of the second slide parts by a single wedge and thus by a single translational movement in the first direction. By minimizing mechanical components, a simplified demoulding process is possible.

According to a further embodiment of the invention, the housing of the slide comprises a brass guide, wherein the first slide part and / or the wedge are made of steel, wherein the first slide part and the second slide part are mounted on the brass guide via steel ball cages. This could have the advantage that a demoulding of the said workpiece is made possible in a mechanically particularly smooth manner. The selective combination of a steel ball cage on a brass guide minimizes friction in the movement of the first slider and wedge.

According to one embodiment of the invention, the slider is configured to displace the wedge in the first direction between a first position and a second position, wherein in the first position by the wedge, the second slider part in the foaming cavity is stable in a third position a foaming operation in the foaming cavity to obtain a undercut by the second slide part workpiece, wherein in the second position by the wedge, the second slide part in the foaming cavity in a Durable fourth position to allow removal of the undercut workpiece.

It is possible here that seen in the first position in the second direction, the displacement of the second slide member from the third position to the fourth position through the wedge is completely filled. It could thereby be avoided that in the foaming process a translation path of the first slide part and thus of the second slide part is blocked by the foam resulting from the foaming process. Since the wedge is movable away from the foamed workpiece without restriction, the path between the third and the fourth position for the first slide part is released by this movement away from the workpiece. This could avoid that damage to the tool occur.

According to one embodiment of the invention, the slider has a first drive for generating the translational displacement of the wedge, wherein the slider has a second drive, wherein the second drive for simultaneous translational displacement of the wedge and the first slide member is formed in the first direction. This could maximize the overall space available for demoulding the workpiece produced. The first drive is used to release the undercut area of the workpiece produced. The actual process of complete or almost complete removal of the slide from the workpiece produced then takes place via the second drive.

For example, the first drive and the wedge and the first slide part form a module, wherein the second drive is adapted to move the simultaneous translational displacement of the wedge and the first slide part in the first direction by a displacement of the module.

According to one embodiment of the invention, the slider further comprises a sensor and a control unit, wherein the sensor is adapted to detect a position of the wedge and / or the first slide part and / or the second slide part, wherein the control unit is adapted to a To allow actuation of the second drive only when the second slide member is in the fourth position. So that end positions of the slider could be queried to avoid damage to the foam tool. In particular, this reliably prevents the second drive from attempting to remove the wedge and the two slide parts from the foaming cavity, although the second slide part is still in the third position. By the described sensor and the control unit could be ensured that an actuation of the second drive is only possible when the second slide member is in the fourth position.

According to a further embodiment of the invention, the workpiece is a motor vehicle interior trim part.

In another aspect, the invention relates to a foam tool having a slider as described above.

In the following, preferred embodiments of the invention are explained in more detail with reference to the drawings.

Show it:

1 a schematic view of a foaming tool,

2 a cross-sectional view of a slider,

3 another cross-sectional view of a slider,

4 a sectional view of the slider AA 2 .

5 a schematic view of a slider,

6 a schematic view of a slider in the foam cavity in the retracted state,

7 a schematic view of a foaming tool with partially extended slider,

8th a schematic view of a foaming tool with fully extended from the Schäumlohlraum slide.

Hereinafter, similar elements will be denoted by the same reference numerals.

The 1 shows a schematic view of a slider 100 for a foaming tool not shown in detail. However, the foaming tool has a foaming cavity 106 on, which by a first slide part 102 and a second slider part 104 of the slider 100 partially limited. The second slide part 104 points to the side of the first slide part 102 away, so that after a corresponding filling of the foaming cavity 106 with a foam through the second slide part 104 an undercut of so in the foam cavity 106 foamed workpiece is generated.

The first slider parts 102 lie opposite each other and are through a wedge 108 spaced apart. The wedge 108 engages in 1 in unspecified manner to the first slide parts 102 on, causing a movement of the wedge 108 in the direction 112 to a translational movement of the slide parts 102 and thus the two slide parts 104 in the direction 110 leads. For example, about the drive 114 the wedge 108 in the direction 112 be pulled down. This leads to the z. B. against movement in the direction 112 secured first slide parts 102 in the direction 110 be attracted to each other, which in turn the second slide parts 104 be pulled out of a corresponding undercut cavity of the workpiece produced in the foaming cavity. This step allows that in the foam cavity 106 located workpiece damage-free from the foaming cavity 106 take out, so to demobilize.

While the drive 114 can only serve the wedge 108 in the direction 112 Moving up and down could be another drive 116 the drive 114 in the direction 112 move up and down. in this case, the first slide parts form 102 , the second slider parts 104 , the wedge 108 and the drive 114 a module in which the corresponding components are connected to each other. The entire module described here can be powered by the drive 116 in the direction 112 be moved up and down.

The 2 shows a side sectional view of the foam tool 100 of the 1 , but in this case additionally that area in the first slide part 102 is shown, which there is a recess 200 forms to from the wedge 108 to be underrun. In the 4 is in the sectional drawing AA this grasping behind the wedge 108 closer. In the 2 is the wedge 108 in a first position and the second slider part 104 are in a so-called third position.

By engaging behind a movement of the wedge 108 in the direction 112 , such as in the 3 shown down, to that the first two slider parts 102 in the direction 110 be attracted to each other. In the 3 is the wedge 108 in a second position and the two slider parts 104 are in a fourth position.

Because due to the pulling out of the wedge 108 in the direction 112 a cavity 300 between the first slide parts 102 arises, these can be first slider parts 102 in the direction 110 be moved to each other. Through this movement in the direction 110 become the second slider parts 104 moved out of corresponding undercut recesses of a workpiece produced.

In the 2 is in the first position of the wedge 108 the area between the first slider parts 102 completely through the wedge 108 filled. This will prevent foam from entering the area between the first slider parts 102 occurs during the foaming process. The wedge 108 is movable away from the foam cavity. This is possible in principle, as blocking of the slide by foam is not endangered. The cavity 300 can be released in any case, so that in turn is guaranteed without any danger or impairment that a demolding process of the workpiece produced can take place.

The 5 shows a perspective and schematic view of a slider 100 , again showing the modular structure. On the one hand, a module is driven by the drive 114 , the wedge 108 as well as the first slide part 102 and the second slider part 104 educated. Furthermore, this module can 114 through the drive 116 in the direction 112 up and down, that is towards the foaming cavity and away from the foaming cavity. For this purpose is via a fixing device 500 the entire slide can be fixed to the foaming tool.

The 6 . 7 and 8th show perspective views of the slider 100 like this one in a corresponding foam tool with foaming cavity 106 can be moved in and out. In the 6 In this case, the slider is shown in fully retracted state, in which when filling the foam cavity 106 with appropriate foam a workpiece is generated. The second slider parts 104 protrude laterally from the first slide parts 102 away into the foaming cavity. This causes the finished workpiece foam to completely break both the wedge 108 as well as the first slide part 102 and the second slider part 104 surrounds. The second slide part 104 defines thereby an undercut in the workpiece thus produced by the foam.

Now, as in the 7 shown a translational movement of the wedge 108 in the direction 112 from the foaming cavity 106 Forced away, this forcibly leads to a moving together of the first slide parts 102 , This will turn the second slider parts 104 pulled out of the undercuts of the workpiece.

Now make sure that the second slider parts 104 can completely out of the undercuts of the workpiece, can drive over 116 the entire module comprising the drive 114 (not shown), the wedge 108 as well as the first slide part 102 and the second slider part 104 from the foaming cavity 106 be removed.

An unspecified sensor could, in conjunction with a control unit ensure that only after detection of the ingestion of 7 shown state in which the second slide parts 104 completely moved out of the undercuts, an energization of the drive 116 can take place at all.

It should be noted that throughout the description, the said second slider parts may, for example, constitute protrusions in order to define corresponding undercuts suitable for latching lugs in motor vehicle interior trim parts such as ventilation grilles or defrost grilles.

The foaming tool described above thus comprises a multi-part slide, which can be retracted linearly into the tool. An additional wedge, which is provided substantially centrally in the slider, spread apart two or more of these slide projections contained slide parts. After a suitable foaming process, the slide can be moved back again, so that the component can be easily demolded with undercuts. The backward movement of the slider takes place in two stages. In the first stage, the wedge slide is moved back to retract the locking lugs. In the second stage the complete slide block moves back. The forward movements also take place in two stages.

LIST OF REFERENCE NUMBERS

100

pusher

102

first slide part

104

second slide part

106

Schäumhohlraum

108

wedge

110

direction

112

direction

114

drive

116

drive

200

cavity

300

cavity

500

fastener

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005026730 A1 [0002]
• DE 102004008412 A1 [0002]

Claims (10)

Slider ( 100 ) for a foaming tool, wherein the slide ( 100 ) in a first direction ( 112 ) into a foaming cavity ( 106 ) of the foaming tool retractable first slide part ( 102 ), wherein the first slide part ( 102 ) a laterally from the first slide part ( 102 ) protruding second slide part ( 104 ), wherein the second slide part ( 104 ) for limiting the foam cavity ( 106 ) of the foaming tool is formed, wherein the slide ( 100 ) a wedge ( 108 ), wherein the wedge ( 108 ) in a first direction ( 112 ) to the foaming cavity ( 106 ) to and from the foaming cavity ( 106 ) away translationally displaceable on the slider ( 100 ) is arranged, wherein the wedge ( 108 ) the first slide part ( 102 ) engages behind, wherein the first slide part ( 102 ) in a second direction ( 110 ) perpendicular to the first direction ( 112 ) through the wedge ( 108 ) displaceable on the slide ( 100 ) is arranged. Slider ( 100 ) according to one of the preceding claims, wherein the slider ( 100 ) two of the first slide parts ( 102 ), which are opposite each other and by the wedge ( 108 ) separated from each other on the wedge ( 108 ) are arranged. Slider ( 100 ) according to one of the preceding claims, wherein the housing of the slide comprises a brass guide, wherein the first slide part ( 102 ) and / or the wedge ( 108 ) are made of steel, wherein the first slide part ( 102 ) and the second slider part ( 104 ) are mounted on steel brass cages on the brass guide. Slider ( 100 ) according to one of the preceding claims, wherein the slider ( 100 ) is adapted to the wedge ( 108 ) in the first direction ( 112 ) between a first position and a second position, wherein in the first position by the wedge ( 108 ) the second slider part ( 104 ) in the foaming cavity ( 106 ) is stable in a third position in order to effect a foaming process in the foaming cavity ( 106 ) for obtaining a through the second slide part ( 104 ) undercut workpiece, wherein in the second position by the wedge ( 108 ) the second slider part ( 104 ) in the foam cavity ( 106 ) is durable in a fourth position to allow removal of the undercut workpiece. Slider ( 100 ) according to claim 4, wherein in the first position in the second direction ( 110 ) seen the shift range ( 300 ) of the second slide part ( 104 ) from the third position to the fourth position through the wedge ( 108 ) is completely filled out. Slider ( 100 ) according to one of the preceding claims, wherein the slider ( 100 ) a first drive ( 114 ) for generating the translational displacement of the wedge ( 108 ), wherein the slider ( 100 ) a second drive ( 116 ), wherein the second drive ( 116 ) for simultaneous translational displacement of the wedge ( 108 ) and the first slide part ( 102 ) in the first direction ( 112 ) is trained. Slider ( 100 ) according to claim 6, wherein the first drive ( 114 ) and the wedge ( 108 ) and the first slider part ( 102 ) form a module, wherein the second drive is adapted to the simultaneous translational displacement of the wedge ( 108 ) and the first slide part ( 102 ) in the first direction ( 112 ) by a displacement of the module. Slider ( 100 ) according to any one of the preceding claims 6-7, further comprising a sensor and a control unit, wherein the sensor is adapted to a position of the wedge ( 108 ) and / or the first slide part ( 102 ) and / or the second slide part, wherein the control unit is designed to actuate the second drive ( 116 ) only if the second slide part ( 104 ) is in the fourth position. Slider ( 100 ) according to one of the preceding claims 4-8, wherein the workpiece is a motor vehicle interior trim part. Foaming tool with a slider ( 100 ) according to one of the preceding claims.

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