Method and device for producing a composite component

Abstract

A method for producing a sintered material/plastic composite component is described. The method includes: (a) placing a sintered material component in an injection-molding device which has a lower die, an upper die and at least one slide; (b) elastically pressing the slide against the placed-in sintered material component; (c) moving the lower die and upper die together, the elastically pressed slide being clamped in between in order to fix the position of the slide, and a mold cavity being formed, in which the sintered material component is arranged, and (d) injecting plastic into the mold cavity, so that the sintered material/plastic composite component is formed.

1 . A method for producing a sintered material/plastic composite component, comprising: 
 (a) placing a sintered material component in an injection-molding device which has a lower die, an upper die and at least one slide,    (b) elastically pressing the slide against the placed-in sintered material component,    (c) moving the lower die and upper die together, the elastically pressed slide being clamped in between in order to fix the position of the slide, and a mold cavity being formed, in which the sintered material component is arranged, and    (d) injecting plastic into the mold cavity, so that the sintered material/plastic composite component is formed.    
   
   
       2 . The method as claimed in  claim 1 , the slide being guided during the elastic pressing operation by a control surface until contact is made with the sintered material component or shortly before, so that the slide is brought up to the placed-in sintered material component at low speed.  
   
   
       3 . The method as claimed in  claim 2 , the slow approach of the slide taking place simultaneously with the moving together of the lower die and the upper die.  
   
   
       4 . The method as claimed in  claim 1 , the slide being kept latched in a retracted position before the sintered material component is placed in.  
   
   
       5 . The method as claimed in  claim 1 , the slide being pressed by the upper die or the lower die against a mating portion of the other die.  
   
   
       6 . The method as claimed in  claim 5 , the mating portion being formed by an insert which is fixed on the die concerned and is made of a more elastic material than the material of the upper die or the lower die.  
   
   
       7 . The method as claimed in  claim 5 , the material pairing of the mating portion and the slide being chosen such that high static friction is achieved.  
   
   
       8 . The method as claimed in  claim 5 , the mating portion being inclined in the direction of the mold cavity at an angle of less than 10°, in particular less than 7°, and the slide being formed with a corresponding slope on its corresponding contact surface.  
   
   
       9 . The method as claimed in  claim 1 , the slide being displaceably mounted on one of the two dies.  
   
   
       10 . The method as claimed in  claim 1 , the slide having a clearance through which a control pin can be led.  
   
   
       11 . The method as claimed in  claim 10 , a relative movement between the control pin and the slide taking place in dependence on the relative movement between the upper die and the lower die.  
   
   
       12 . The method as claimed in  claim 10 , the control pin being elastically prestressed and displaced against the prestressing direction by a push rod during the moving together of the dies.  
   
   
       13 . The method as claimed in  claim 10 , the slide being kept in a retracted position by a latching engagement of the control pin on one edge of the clearance.  
   
   
       14 . The method as claimed in  claim 10 , the speed of the inward movement of the slide in the direction of the mold cavity being set up by a control surface of the control pin.  
   
   
       15 . The method as claimed in  claim 1 , the mold cavity for forming the sintered material/plastic composite component being defined in the lateral direction by a plurality of slides which are all elastically prestressed in the direction of the mold cavity.  
   
   
       16 . A device for producing a sintered material/plastic composite component, comprising a lower die, an upper die and at least one slide, which together define a mold cavity for placing in a sintered material component, wherein the device is an injection-molding device, the slide being elastically prestressed in the direction of the mold cavity and mounted with respect to the lower die and the upper die in such a way that the position of the slide can be fixed such that it lies against the sintered material component by pressing the dies together.