Apparatus for the production of molded concrete parts in a molding machine

Abstract

An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having at least one pressure punch for transfer of a force to at least one pressure plate, wherein the pressure plate can be introduced into an opening of a mold insert in a lower mold part in the vertical direction, wherein the lower mold part is surrounded by a frame that has a guide connected with the upper mold part and configured so that, the lower mold part can be tilted from the vertical direction, relative to the upper mold part, during engagement of the pressure plates into the openings of the mold insert.

Claims

1. An apparatus for producing concrete molded parts in a molding machine, the apparatus comprising: (a) a lower mold part; (b) a mold insert disposed in the lower mold part and having an opening; (c) at least one pressure plate introduceable into the opening of the mold insert in a vertical direction; (d) an upper mold part having at least one pressure punch for transfer of a force to the at least one pressure plate; and (e) a frame surrounding the lower mold part, said frame comprising at least a first guide connected with the upper mold part and configured so that the lower mold part can be tilted from the vertical direction, relative to the upper mold part, during engagement of the at least one pressure plate into the opening of the mold insert.

2. The apparatus according to claim 1, further comprising a second guide, wherein the frame has a first side and a second side opposite to the first side and the first and second guides are disposed on the first and second sides of the frame, respectively.

3. The apparatus according to claim 1, wherein the first guide comprises an elongated body configured along the vertical direction, having parallel side lines relative to the vertical direction, at least in certain sections, said elongated body engaging into an at least partially corresponding passage.

4. The apparatus according to claim 3, wherein the elongated body is connected with the upper mold part and the passage is connected with the lower mold part.

5. The apparatus according to claim 4, wherein the elongated body and the passage have dimensions that are selected so that a maximal value of tilting of the lower mold part relative to the upper mold part is predetermined.

6. The apparatus according to claim 1, wherein the lower mold part is configured to tilt relative to the upper mold part by an angle that lies in the range of less than 2.

7. The apparatus according to claim 6, wherein the angle is approximately 1.

8. The apparatus according to claim 3, wherein the elongated body is structured as a circular-cylindrical pin that engages into a bushing disposed on the frame provided with a circular-cylindrical inner surface, as a passage.

9. The apparatus according to claim 8, wherein the circular-cylindrical pin has an outside diameter selected as a function of a height of the bushing along the vertical direction and an inside diameter of the bushing disposed in the frame.

10. The apparatus according to claim 8, wherein at least one of the circular-cylindrical pin and the bushing is replaceably attached in the first guide.

11. The apparatus according to claim 1, wherein the first guide is configured to be screwed onto the frame, laterally, outside of the mold insert and outside of the at least one pressure punch, to a side of the upper mold part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Other objects and features of the invention will become apparent from the following detailed description considered in connection with the accompanying drawings. It is to be understood, however, that the drawings are designed as an illustration only and not as a definition of the limits of the invention.

(2) In the drawings,

(3) FIG. 1 is a side view of an apparatus for the production of molded concrete parts according to an embodiment of the invention;

(4) FIG. 2 is a side view of the apparatus from FIG. 1 in a tilted position;

(5) FIG. 3 is a further side view of the apparatus from FIG. 1;

(6) FIG. 4 shows the apparatus from FIG. 1, from a direction that lies opposite in comparison with FIG. 3;

(7) FIG. 5 shows schematic components of the apparatus from FIG. 1; and

(8) FIG. 6 is a schematic view of a detail of the apparatus from FIG. 5.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(9) In the figures, components that are similar or functionally the same are provided with the same reference symbol.

(10) In FIG. 1, an apparatus VO is shown, which, is suitable for the production of molded concrete parts in a molding machine. The apparatus VO has a mold disposed in replaceable manner, which is formed by a lower mold part FU and an upper mold part FB. The lower mold part FU has a mold insert, in a manner usual in technology, which insert has a correspondingly selected number of openings, so that molded concrete parts can be produced in the desired number or size, using the apparatus VO.

(11) The upper mold part FB has a plurality of pressure plates DP, wherein each pressure plate DP corresponds with an opening in the lower mold part FU. The pressure plates DP are connected with the punch plate ST by way of a pressure punch DS, in each instance.

(12) Above the punch plate ST, a top-load device AS is provided, which can compress a concrete mixture introduced into the openings of the mold insert in the lower mold part FU as a fill material, by way of the pressure punch DS. The top-load element AE has attachment elements on its top side, which elements, together with further elements, which are not, however, the object of the present invention, allow accommodation of the top-load element AE in a molding machine.

(13) The lower mold part is usually made available with a plurality of openings, wherein the openings that form the mold insert are surrounded by a frame RA. A guide means FM is disposed between the frame RA of the lower mold part FU and the upper mold part FB, which means ensures alignment of the lower mold part FU relative to the upper mold part FB.

(14) In this regard, the guide means FM can be divided into individual units, which, as shown in FIG. 1, are disposed on two opposite sides of the frame RA, which is usually in rectangular shape. To clarify the function of the guide means FM, the plane spanned by the pressure plates DP will be referred to as the xy plane below. The z direction is situated in the direction vertical to the xy plane, i.e. along the pressure punch DS. The guide means FM is configured in such a manner that the lower mold part FU can tilt slightly relative to the upper mold part FB. In this regard, tilting is understood to be a deviation from the xy plane, so that when the pressure plates dip into the mold inserts of the lower mold part FU, formerly parallel sections of the upper mold part FB and of the lower mold part FU demonstrate an angle relative to one another in the case of tilting. In this regard, tilting can take place not just along the x direction or the y direction, because it is particularly provided that tilting with regard to both directions is also intended to be possible.

(15) A correspondingly tilted arrangement of the apparatus VO is shown in FIG. 2. It can be seen that the stops AS, which usually bring about delimitation of the extent to which the pressure plates DP dip into the mold inserts of the lower mold part FU in the case of complete filling, do not simultaneously rest on the frame RA or on the lower mold part FU. In this regard, it should be noted that the representation shown in FIG. 2 is greatly exaggerated, because the angle that is formed between the tilted and the parallel state lies in the range of about 1.

(16) In FIG. 3, the apparatus VO is shown in a side view once again. It can be seen that the guide means FM does not have to be disposed centrally in the middle of the frame RA of the lower mold part FU or of the upper mold part FB. Furthermore, it can be seen in FIG. 3 that the guide means FM has a lower section into which a cylindrical guide pin FS can dip. In this regard, the lower section is configured as a bushing, wherein, the guide pin FS has a certain play within the bushing, which has a cylindrical inside. The guide pin FS is attached to the upper mold part FB by means of a holder HA, wherein the lower section of the guide means FM can be screwed onto the lower mold part FU. This method of procedure allows simple retrofitting of already existing apparatuses VO.

(17) In FIG. 4, the side view of FIG. 3 is shown once again from the opposite side. In this connection, the affixation of the guide means FM is selected to be identical to the opposite side, wherein here, too, other configurations are conceivable. Furthermore, an attachment screw BF is shown, which holds the guide pin FS of the guide means FM. Accordingly, it is possible to replace a guide pin FS or multiple guide pins FS, for example after extended operation of the apparatus VO.

(18) In FIG. 5, the tilting of the lower mold part FU relative to the upper mold part FB is shown once again, in a schematic view. In this schematic representation, two guide pins FS are shown, in each instance, which, as has already been described in connection with FIGS. 1 to 4, are affixed to the upper mold part FB outside of the pressure punch DS. The lower mold part, which is shown in FIG. 5 merely as a lower support UA, can, as has already been mentioned, accommodate the guide pins FS outside of the frame RA. Because of the selected dimensioning within the passage of the lower support DA, tilting of the lower mold part FU relative to the upper mold part FB is thereby possible; this tilting is shown schematically in FIG. 5, using the angle WN. In this regard, the angle WN can amount to less than 2, wherein a value of about 1 has proven to be particularly advantageous. The restriction of the angle WN is advantageously achieved by the dimensioning of the guide pin FS in the passage within the lower support UA, as is indicated as Detail A in FIG. 5, shown once again magnified in FIG. 6.

(19) In FIG. 6, Detail A is shown in a sectional view, wherein a bushing BU is indicated within the lower support UA, which bushing delimits the circular-cylindrical outer surface of the guide pin FS with its circular-cylindrical inner surfaces. The inside diameter of the bushing BU as well as the outside diameter of the guide pin FS can be calculated without difficulty if the height of the bushing BU as well as the distances of the two guide pins FS from one another are known. In order to achieve tilting of less than 1 at a distance of approximately 1.5 m of the two guide pins FS from one another, for example, the guide pin having an outside diameter of 40 mm can engage into a bushing BU having a height of 14 mm. The inside diameter of the bushing BU is selected to be about 10% greater than the outside diameter of the guide pin FS, in order to achieve the desired tilting of less than 1 of the angle WN.

(20) The characteristics that are indicated above and in the claims, as well as that are evident in the figures, can advantageously be implemented both individually and in various combinations. The invention is not restricted to the exemplary embodiments described, but rather can be modified in many different ways, within the scope of the ability of a person skilled in the art.

(21) Thus, although only some exemplary embodiments of the present invention have been shown and described, it is to be understood that many changes and modifications may be made thereunto without departing from the spirit and scope of the invention.