DE102005021949A1 - System for removing moulding ridges from pressure cast ceramic articles using a polishing belt moving with controlled tension between two rollers - Google Patents

Abstract

A system for removing moulding ridges from pressure cast ceramic articles uses a polishing belt (24) moving between two support rollers (18) to exert a controlled pressure onto the ceramic article (14). The polishing effect on the ceramic articles (14) is controlled by varying the belt tension and the spacing of the rollers. A sprung support (25) onto the back of the belt increases the polishing pressure.

Description

The The invention relates to a device for removing the burr the dividing seams of die-cast ceramic articles.

at die-cast ceramic articles, such as ceramic utensils lie the dividing seams usually in the area of spherically curved surfaces of the ceramic article.

To the Eliminate the burr at the pitch seams of such die-cast Ceramic article so far knives or files are used. When using knives or files as cleaning tools are when eliminating the ridge, discontinuous contour transitions are often unavoidable. Such discontinuous correction transitions are already in the raw, white-dried Condition of die-cast ceramic products recognizable. Yet However, such discontinuous contour transitions occur more clearly after firing Glaze reflections.

Of the Invention is the object of a device of the initially to create said type, which is easily formed, and with the improvement of the plaster quality in the area of the ridge die-cast ceramic article is guaranteed.

These The object is achieved by the Features of claim 1, i. solved by the fact that the device Pair of pulleys has the one for removing the burr provided purifying belt is wound. The around the two pulleys Coiled cleaning belt settles by the pressure of the plastered die-cast ceramic article to the burr to be removed of the die-cast ceramic article such that only the from the die-cast ceramic article projecting burr through a Relative transverse movement is removed. Discontinuous contour transitions in the area of the eliminated ridge on the die-cast ceramic article avoided.

at the device according to the invention it is preferred if the distance between the pulleys, the Setting a desired Belt tension, adjustable. By the desired adjustment of the belt tension Putzriemens are the purging properties of the device according to the invention optimized. By change the belt tension, it is possible in an advantageous manner, the Plating area of the cleaning belt in relation to the die-cast ceramic Article, i. the ridge protruding from it defines such to vary that laterally next to the ridge to be removed from the diecast ceramic article no ceramic material removed becomes.

When has appropriate it turns out, if between the two pulleys in one middle area a resilient pressure element is provided because with this resilient pressure element of the pressure in the region of the respective die cast ceramic article to be removed burr in an advantageous Way increased can be. In this resilient pressure element, for example around a spring plate or around with the help of springs against the cleaning belt gezwängtes rigid sheet metal part or the like act.

A the two pulleys can be connected to a drive device be. It is preferred, however, if against the two pulleys laterally offset at least one tensioning roller, for setting a desired Belt tension, adjustable is provided.

at Such a training of the latter type, it has as proved appropriate when the tension roller is connected to a drive device.

Of the Cleaning belt of the device according to the invention can be formed by a round belt or a flat belt. By choosing the belt material and the surface structure the cleaning belt can be ensured that side next to the burr to be removed from the die-cast ceramic article no ceramic material is removed.

Of the Cleaning belt may e.g. have a fine abrasive grain or the like.

Conveniently, is the cleaning belt to be removed burr of die-cast ceramic article oriented transversely.

Further Details, features and advantages will be apparent from the following Description of an embodiment schematically illustrated in the drawing the device according to the invention for eliminating the burr at the split seams die-cast ceramic Items.

It demonstrate:

1 a schematic side view of the device according to the invention,

2 a detail of the device according to 1 on a larger scale, and

3 a plan view of a die-cast ceramic article.

3 schematically illustrates a die-cast ceramic article 10 with a burr 12 made of die-cast ceramic article 10 , ie from its spherically curved surface 14 , protruding outward. The in the 1 and 2 schematically illustrated device 16 serves to remove the ridge 12 from die-cast ceramic article 10 , where unwanted discontinuous contour transitions in the area of the eliminated ridge 12 be easily avoided.

The device 16 has a pair of pulleys 18 on. The distance between the two pulleys 18 is changeable. Against the two pulleys 18 is laterally offset a tension roller 20 intended. The tension roller 20 is with a drive device 22 connected.

To the two pulleys 18 and the tension roller 20 is a cleaning belt 24 wound.

With the help of the tension pulley 20 is the belt tension of the cleaning belt 24 as desired adjustable.

The in the drawing plane of the 1 and 2 arranged cleaning belts 24 is to the plane of the drawing 3 vertically oriented ridge 12 of the die-cast ceramic article 10 perpendicular ie oriented transversely.

With the reference number 26 is in 1 a stand facility 26 denoted, which is only schematically illustrated. At this stand device 26 are the pulleys 18 and the tension roller 20 with the drive device 22 appropriate.

With the device according to the invention 16 This results in an improvement in the quality of plaster that between the two pulleys 18 circumferential cleaning belts 24 to the article 10 by a defined contact pressure of the die cast ceramic article to be plastered 10 defines and creates only the article 10 protruding burr 12 by the relative transverse orientation between the cleaning belt 24 and the burr to be removed 12 abolishes while avoiding discontinuous contour transitions. In addition, the cleaning belt 24 in a middle area between the two pulleys 18 by a resilient element 25 be supported. As a result, the pressure in the area of the burr to be eliminated 12 and the cleaning work can be improved. In order to achieve a desired cleaning effect, can - as has already been stated - the surface of the cleaning belt 24 be designed differently, for example, have a fine abrasive grain or the like.

By deliberately changing the pretension of the cleaning belt 24 it is possible to place the attachment between the cleaning belt 24 and the die-cast ceramic article to be plastered 10 along the ridge 12 to vary and to adjust as desired. In this way and through targeted selection of the belt material and the surface structure of the cleaning belt 24 it is ensured that laterally next to the burr to be removed 12 from plastered die-cast ceramic article 10 no ceramic material is removed. Unsteady contour transitions, which represent a production committee in extreme cases, so with the cleaning device according to the invention 16 avoided.

10

diecast ceramic article

12

Burr (on 14 )

14

spherical curved surface (from 10 )

16

cleaning device

18

Pulleys (from 16 )

20

Tension pulley (from 16 )

22

Drive device (for 20 )

24

Cleaning belts (from 16 )

25

resilient element (for 24 )

26

Stand facility (from 16 )

Claims (11)

Device for removing the burr ( 12 ) at the parting seams of die-cast ceramic articles ( 10 ), characterized in that the device ( 16 ) a pair of pulleys ( 18 ) to remove the one for removing the ridge ( 12 ) provided plastering belt ( 24 ) is wound. Apparatus according to claim 1, characterized in that the distance between the pulleys ( 18 ), to adjust a desired belt tension, is adjustable. Apparatus according to claim 1, characterized in that between the two pulleys ( 18 ) in a middle area with the cleaning belt ( 24 ) cooperating resilient pressure element ( 25 ) is provided. Device according to one of claims 1 to 3, characterized in that one of the deflection rollers ( 18 ) with a drive device ( 22 ) connected is. Device according to one of claims 1 to 3, characterized in that against the two pulleys ( 18 ) offset laterally at least one tension roller ( 20 ), is provided for adjusting a desired belt tension, adjustable. Apparatus according to claim 5, characterized in that the tension roller ( 20 ) with an on drive device ( 22 ) connected is. Device according to one of claims 1 to 6, characterized in that the cleaning belt ( 24 ) is formed by a round belt. Device according to one of claims 1 to 6, characterized in that the cleaning belt ( 24 ) is formed by a flat belt. Device according to one of claims 1 to 8, characterized in that the cleaning belt ( 24 ) has a textured abrasive surface. Apparatus according to claim 9, characterized in that the structured abrasive surface of the cleaning belt ( 24 ) is formed by a fine abrasive grain. Device according to one of claims 1 to 10, characterized in that the cleaning belt ( 24 ) to the ridge ( 12 ) of the die-cast ceramic article ( 10 ) is oriented transversely.