GB2038694A - Adjustably mounted extrusion die cores - Google Patents
Adjustably mounted extrusion die cores Download PDFInfo
- Publication number
- GB2038694A GB2038694A GB7848782A GB7848782A GB2038694A GB 2038694 A GB2038694 A GB 2038694A GB 7848782 A GB7848782 A GB 7848782A GB 7848782 A GB7848782 A GB 7848782A GB 2038694 A GB2038694 A GB 2038694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suspension means
- segments
- bricks
- mouldings
- cavities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001125 extrusion Methods 0.000 title abstract description 3
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 238000000465 moulding Methods 0.000 claims abstract description 19
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 10
- 239000011470 perforated brick Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 16
- 239000011449 brick Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000011459 moulded brick Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The die, for moulding cavities in extruded ceramic material, such as in the extrusion of perforated bricks, comprises a plurality of individual segments each comprising a core holder yoke (1) having a plurality of core holders and cones (3), suspension means (4) e.g. threaded spindles for suspending the segments across a mould cavity such that the segments extend thereacross in a first direction, the distance between the individual segments suspended, in use, by the suspension means (4) being adjustable, and bracket means (6) for supporting the suspension means such that the suspension means can be adjustably moved in a direction transverse to the first direction e.g. along slots 8. <IMAGE>
Description
SPECIFICATION
Improvements in or relating to moulding extruded material
This invention relates to an apparatus and a process for moulding extruded material, such as ceramic material, in the production of moulding having cavities, such as perforated bricks.
Apparatus have been proposed in which the moulds consist of compact structures, mainly welded structures, which can be altered only at considerable expense. Experience has shown that in most cases moulds have to be adjusted because of the varying extrusion requirements of different brick sizes with different number of holes in the brick cross-section, thickness of web and gross weight. It is an object of this invention to overcome or at least mitigate the above mentioned disadvantage.
According to a first aspect of this invention there is provided an apparatus for moulding extruded material, such as ceramic material, in the production of mouldings having cavities, such as perforated bricks, which apparatus comprises a plurality of individual segments each comprising a core holder yoke having a plurality of cores and core holders, suspension means for suspending the segments across a mould cavity such that the segments extend thereacross in a first direction, the distance between the individual segments suspended, in use, by the suspension means being adjustable, and means for supporting the suspension means such that the suspension means can be adjustably moved in a direction transverse to the first direction.
According to a second aspect of this invention there is provided a process for moulding extruded material, such as ceramic material, for the production of mouldings having cavities, such as bricks, which process comprises feeding extruded material into a mould cavity having, extending thereacross in a first direction, a plurality of individual segments each comprising a core holder yoke having a plurality of cores and core holders, the distance between the individual segments being adjustable, the segments being supported with respect to the mould by suspension means and the suspension means being supported such that the suspension means can be adjustably moved in a direction extending transverse to the first direction.
This invention further relates to mouldings, such as bricks, whenever produced using the apparatus of the first aspect or the process of the second aspect.
Advantageously, means are provided for retaining the segments, suspended in use by the suspension means, at the required distances apart from each other. The suspension means preferably comprises at least one screw threaded rod. The supporting means preferably comprises brackets for supporting the suspension means on plates, the brackets being provided with slots or recesses such that, in use, the suspension means can be bolted by means ofthe brackets to the plates, the bolts extending through the slots to enable adjustment of the suspension means in the transverse direction.
A preferred embodiment of this invention provides an apparatus which, while being simple to manufacture, can be adapted to the diverse nature of the materials and extruders with minimum expense.
Such a preferred embodiment apparatus comprises any desired number of individual segments which can be bolted together by means of screw connections, such as screw threaded rods, so as to be adjustably positioned relative to one another. A significant advantage of this preferred embodiment apparatus is that the mould can be changed without difficulty as a result of the screw connections and can hence easily be adapted to the different nature of the materials and extruders.
Another advantage of this preferred embodiment apparatus is that the individual segments can be mass-produced, thus greatly reducing production costs.
For a better understanding of this invention and to show how the same may be put into effect, reference will now be made, by way of example, to the accompanying, drawing, in which Figure 1 shows a side elevational view of an individual segment of an embodimentofanappar- atus in accordance with this invention,
Figure 2 shows a plan view of the embodiment apparatus including the segments of Figure 1,
Figure 3 shows a part-sectional view through the apparatus of Figure 2.
Referring to the drawing, there is shown an apparatus for moulding extruded ceramic material in the production of bricks.
The apparatus comprises a plurality of individual segments leach comprising a core holder yokel, in this embodiment a fixing plate, having a plurality of core holders 2 and cores 3. The segments I are suspended across a mould cavity by means of two screw threaded rods 4 which extend through apertures in the core holder yokes 1. The segments I, as shown in Figure 2, each extend across the mould cavity in a first direction. The segments I are each movable along the screw threaded rods 4 and can be retained at a desired distance apart from each other by means of retaining means or spacers 5 threaded onto the screw threaded rods 4 and situated on either side and closely adjacent each segment I.
The screw threaded rods 4 are supported by brackets 6, the rods 4 passing through the brackets and being fixedly retained thereto by further spacers 5. The base of each bracket is provided with two recesses or slots 8 extending substantially transversely to the first direction in which the segments I extend. Bolts pass through the recesses or slots (see
Figure 3) to bolt the bracket 6 to a plate 7. As a result, the screw threaded rods 4 and hence the segments I can be adjustably moved in a direction transverse to the first direction.
The size ofthe mould and the number of holes in the moulded brick are determined by the number of individual segments I.
Extruders are usually used for extruding the ceramic material but they give rise to different rates of feed with reference to the mould cross-section as a result of the auger action. As a result different stresses can occur in the moulded brick itself.
The stresses in the material, in this embodiment ceramic material, to be extruded can be elimiiiated or at least mitigated by dividing the flow of material
A (see Figure 3) by means of tho individual segments
I. The different I ates of feed can b(! 'ltialized as a result of the aditistability of the dislall(:es between the individual segments I. The flow of material can be additionally controlled by adjustment of the bracket 6 by means of the slots 8.
Claims (11)
1. An apparatus for moulding extruded material, such as ceramic material, in the production of mouldings having cavities, such as perforated bricks, which apparatus comprises a plurality of individual segments each comprising a core holder yoke having a plurality of cores and core holders, suspension means for suspending the segments across a mould cavity such that the segments extend thereacross in a first direction, the distance between the individual segments suspended, in use, by the suspension means being adjustable, and means for supporting the suspension means such that the suspension means can be adjustably moved in a direction transverse to the first direction.
2. An apparatus according to Claim 1, which comprises means for retaining the segments, suspended in use by the suspension means, at the required distances apart from each other.
3. An apparatus according to Claim 1 or 2, wherein the suspension means comprises at least one screw threaded rod.
4. An apparatus according to Claim 3, wherein the rod(s) extend(s), in use, through apertures in the core holder yokes of the segments and wherein the retaining means are threaded on the rod and situated, in use, next to the segments supported on the rod(s) to retain the segments at the required distances apart from each other.
5. An apparatus according to any one of the preceding claims, wherein the supporting means comprises brackets for supporting the suspension means on plates, the brackets being provided with slots or recesses such that, in use, the suspension means can be bolted by means of the brackets to the plates, the bolts extending through the slots to enable adjustment of the suspension means in the transverse direction.
6. A process for moulding extruded material, such as ceramic material, for the production of mouldings having cavities, such as bricks, which process comprises feeding extruded material into a mould cavity having, extending thereacross in a first direction, a pluraity of individual segments each comprising a core holder yoke having a plurality of cores and core holders, the distance between the individual segments being adjustable, the segments being supported with respect to the mould by suspension means and the suspension means being supported such that the suspension means can be adjustably moved in a direction extending transverse to the first direction.
7. An apparatus for moulding extruded material, such as ceramic material, in the production of mouldings having cavities, such as bricks, substantially as herein before described with reference, to and as shown in, Figures 1 to 3 of the accompanying drawing.
8. A process for moulding extnJ(Ir:(l material, such as cc!r;nnic material, for the proritiction of mouldin!ls living cavities, such as bricks substantially as ler.'inbefore described with reference to
Figures 1 to 3 of the drawing.
9. Mouldings whenever produced using the apparatus of any one of Claims 1 to 5 and 7 and/or using the process of Claim 6 or 8.
10. Mouldings according to Claim 9, which are bricks.
11. Any novel feature or novel combination of features disclosed herein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7848782A GB2038694B (en) | 1978-12-15 | 1978-12-15 | Adjustably mounted extrusion die cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7848782A GB2038694B (en) | 1978-12-15 | 1978-12-15 | Adjustably mounted extrusion die cores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2038694A true GB2038694A (en) | 1980-07-30 |
| GB2038694B GB2038694B (en) | 1982-10-20 |
Family
ID=10501768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7848782A Expired GB2038694B (en) | 1978-12-15 | 1978-12-15 | Adjustably mounted extrusion die cores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2038694B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369271A (en) * | 2014-11-07 | 2015-02-25 | 重庆市綦江区公信建材有限公司 | Gypsum hollow block preparing production line |
-
1978
- 1978-12-15 GB GB7848782A patent/GB2038694B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104369271A (en) * | 2014-11-07 | 2015-02-25 | 重庆市綦江区公信建材有限公司 | Gypsum hollow block preparing production line |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2038694B (en) | 1982-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |