DE1778265B1 - Method and device for the uniform charging of a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with dough-like masses of liquid or dissolved plastics - Google Patents
Method and device for the uniform charging of a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with dough-like masses of liquid or dissolved plasticsInfo
- Publication number
- DE1778265B1 DE1778265B1 DE19681778265D DE1778265DA DE1778265B1 DE 1778265 B1 DE1778265 B1 DE 1778265B1 DE 19681778265 D DE19681778265 D DE 19681778265D DE 1778265D A DE1778265D A DE 1778265DA DE 1778265 B1 DE1778265 B1 DE 1778265B1
- Authority
- DE
- Germany
- Prior art keywords
- masses
- tubular shape
- liquid
- pipes
- fillers
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000007788 liquid Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000004033 plastic Substances 0.000 title claims 7
- 229920003023 plastic Polymers 0.000 title claims 7
- 239000000945 filler Substances 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims 5
- 239000011230 binding agent Substances 0.000 claims 3
- 239000000049 pigment Substances 0.000 claims 3
- 239000000654 additive Substances 0.000 claims 2
- 230000009969 flowable effect Effects 0.000 claims 2
- 235000011837 pasties Nutrition 0.000 claims 2
- 239000004848 polyfunctional curative Substances 0.000 claims 2
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- 239000004568 cement Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000005056 compaction Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000012779 reinforcing material Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 229920006337 unsaturated polyester resin Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/242—Moulding mineral aggregates bonded with resin, e.g. resin concrete
- B29C67/243—Moulding mineral aggregates bonded with resin, e.g. resin concrete for making articles of definite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
Description
Bei einem anderen bekannten Verfahren wird der Weg beschritten, die zunächst senkrecht stehende Schleuderform von oben her mit einer ausreichenden Menge an Gießmasse zu füllen, um erst dann in einem weiteren Arbeitsgang die Verteilung der Masse in der sich um eine horizontale Achse drehenden Gießform durch die Zentrifugalkraft zu bewirken. In another known method, the path is taken that first vertical centrifugal form from above with a sufficient amount to fill the casting compound, only then to distribute it in a further operation the mass in the casting mold rotating around a horizontal axis due to centrifugal force to effect.
Für ein solches Verfahren kommen aber nur gering gefüllte Massen in Frage, deren Viskosität niedrig genug ist, um ein Verfließen des zunächst vorhandenen Masseklumpens zu ermöglichen. Bei stark gefüllten Massen und insbesondere bei Rohrformen, bei denen Einlagen zur Erzeugung von Löchern, Schlitzen oder anderen Hohlräumen in der Wand des geschleuderten Rohres vorgesehen sind, so daß ein glatter Verlauf einer aus Kunstharz und Füllstoffen bestehenden Mischung gestört ist, sind jedoch im allgemeinen Wanddicken-Differenzen im fertigen Schleuderrohr nicht zu vermeiden.However, only slightly filled masses are used for such a process Question whose viscosity is low enough to prevent the initially existing Allow mass lumps. With heavily filled masses and especially with tube shapes, where inserts are used to create holes, slots or other cavities are provided in the wall of the flung pipe, so that a smooth course a mixture consisting of synthetic resin and fillers is disturbed, however In general, differences in wall thickness in the finished centrifugal tube cannot be avoided.
Der Erfindung liegt die Aufgabe zugrunde, eine rotierende Rohrform so gleichmäßig mit einer teigartigen Masse aus einem flüssigen Kunstharz und einem hohen Anteil an Füllstoffen, z. B. Quarzsand und Quarzmehl, zu beschicken, daß keine Wanddickenunterschiede auftreten, auch wenn die eingetragene Masse so zähflüssig ist, daß sie in der Rohrform kaum noch verfließt. Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Masse vor der Abgabe in die Rohrform nach Durchmischung ihrer Bestandteile zu Krümeln zerteilt wird. The invention is based on the object of a rotating tubular shape so evenly with a dough-like mass of a liquid synthetic resin and a high proportion of fillers, e.g. B. quartz sand and quartz powder to charge that none Wall thickness differences occur, even if the added mass is so viscous is that it hardly flows in the pipe shape. This object is achieved according to the invention solved in that the mass before delivery into the tubular shape after mixing its components is broken up into crumbs.
Die Erzeugung von kleinen Krümeln aus der teigartigen Masse ermöglicht es, die Masse in gleichmäßiger Stromstärke auf die Innenwand der Rohrform aufzubringen. Unter der Wirkung der Zentrifugalkraft verfließen die Krümel wieder zu einer homogenen Masse, wobei die im Anfangsstadium des Vorganges zwischen den Krümeln befindliche Luft in das Rohrinnere entweichen kann. Die Krümel aus der teigigen Masse, die nur in einem solchen aufgeteilten Zustand verhältnismäßig leicht transportierbar sind, vereinigen sich unter der Wirkung der Zentrifugalkraft nach und nach am Ort der Aufbringungsstelle innerhalb des Rohrinneren. Je zwei oder drei benachbarte Krümel wachsen zu einem größeren Krümel zusammen. Dies wiederholt sich auf der ganzen Fläche der Rohrinnenwand, bis die eingebrachte Schicht aus der teigigen Masse eine homogene Mischung darstellt. Bei diesen Krümeln sind die Füllstoffkörner zunächst von dem flüssigen Kunstharz umhüllt. Diese flüssige Kunstharzhülle ermöglicht das Zusammenwachsen der Krümel, indem die Füllstoffkörner in der flüssigen Kunstharzhülle sich zu jeweils größeren Masseteilchen zusammenschließen. Durch die beim Schleudervorgang entstehende Zentrifugalkraft wird das Zusammengehen der Krümel zu einer homogenen Masse unterstützt. Durch die Aufteilung der teigigen Masse in eine Vielzahl von Krümeln ist die Gewähr gegeben, daß jedem Masse-Kern aus Füllstoff eine entsprechende Menge des flüssigen Kunstharzes als Hülle zugeordnet bleibt, wodurch sich die Erzielung der homogenen Masse über die ganze Länge des zu bildenden Rohres ergibt. The production of small crumbs from the dough-like mass enables it is to apply the mass in a uniform current strength on the inner wall of the tubular shape. Under the effect of centrifugal force, the crumbs flow back into a homogeneous one Mass, with the one located between the crumbs in the initial stage of the process Air can escape into the inside of the pipe. The crumbs from the doughy mass that only are relatively easy to transport in such a divided state, unite under the action of centrifugal force little by little at the location of the Application point inside the pipe. Two or three adjacent crumbs each grow together into a larger crumb. This is repeated over the entire area the inner wall of the pipe until the layer of doughy mass that has been introduced is homogeneous Mixture represents. In these crumbs, the filler grains are initially of that encased liquid synthetic resin. This liquid synthetic resin shell enables them to grow together the crumbs by placing the filler grains in the liquid synthetic resin shell towards each other join together larger mass particles. Due to the Centrifugal force helps the crumbs to come together to form a homogeneous mass. By dividing the doughy mass into a large number of crumbs, this is a guarantee given that each mass core of filler a corresponding amount of the liquid Synthetic resin remains assigned as a shell, whereby the achievement of the homogeneous Mass over the entire length of the pipe to be formed results.
Die Zerteilung der teigigen Masse kann unmittelbar vor der Abgabe in die Rohrform in dieser durchgeführt werden. Sie kann aber auch außerhalb der Rohrform erfolgen. The doughy mass can be broken up immediately before delivery into the tubular shape in this are carried out. But it can also be used outside of the Tube shape.
Die Erfindung bezieht sich ferner auf eine Vorrichtung zur Durchführung des Verfahrens mit einer Rohrform sowie einer zum Einbringen der Masse in die Form dienenden Schneckenpresse. Die Vorrichtung ist dadurch gekennzeichnet, daß zwischen der Schneckenpresse und der Masse-Abgabestelle in der Rohrform eine Schneidvorrichtung vorgesehen ist. Je nach der Länge und dem inneren Durchmesser der zu beschickenden Rohrform kann zwischen der Schnekkenpresse und der Schneidvorrichtung eine Fördereinrichtung für einen Materialstrang, z. B. ein Förderband, eingeschaltet sein. Die Schneidvorrichtung kann sich auch unmittelbar an die Schneckenpresse anschließen, wobei ein in das Innere der Rohrform führendes pneumatisches Förderrohr vorgesehen ist. The invention also relates to an apparatus for performing it of the method with a tubular shape and one for introducing the mass in form serving screw press. The device is characterized in that between the screw press and the mass discharge point in the pipe form a cutting device is provided. Depending on the length and the inner diameter of the items to be loaded Tubular form can be a conveyor between the screw press and the cutting device for a strand of material, e.g. B. a conveyor belt to be switched on. The cutting device can also be connected directly to the screw press, with one in the Inside the tubular shape leading pneumatic conveying pipe is provided.
Die Erfindung wird an Hand von zwei in der Zeichnung dargestellten Ausführungsbeispielen einer Vorrichtung nachstehend erläutert. Es zeigt Fig. 1 eine Ausführungsform der Vorrichtung nach der Erfindung im Längsschnitt schematisch, F i g. 2 eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung, F i g. 3 eine Einzelheit der Schneidvorrichtung. The invention is illustrated with reference to two in the drawing Embodiments of a device explained below. 1 shows a Embodiment of the device according to the invention in longitudinal section schematically, F i g. 2 shows a further embodiment of the device according to the invention, FIG. 3 shows a detail of the cutting device.
Zur Beschickung einer Rohrform 1 mit einem teigartigen Material zur Erzielung einer gleichmäßigen Verteilung über die Länge der Rohrform wird die Masse, z. B. ein flüssiges Kunstharz mit Füllstoffen, durch eine Schneckenpresse 2 angeliefert. Der aus der Düse der Schneckenpresse austretende Massestrang 3 wird auf einem Förderband 4 in das Innere der Rohrform 1 transportiert. Am Ende des Förderbandes 4 ist ein Abstreifer 5 und eine Schneidvorrichtung 6 vorgesehen, die beispielsweise aus gegenläufig sich drehenden Messerwalzen 14 (F i g. 3) bestehen kann, zwischen denen die teigige Masse hindurchgeführt wird. Der teigige Massestrang 3 wird durch die Schneidvorrichtung in Krümel 7 aufgeteilt, die auf die Innenwand der Rohrform 1 fallen. Zum Antrieb der Schneidvorrichtung dient eine Antriebswelle 8. For charging a pipe shape 1 with a dough-like material for Achieving an even distribution over the length of the pipe shape is the mass, z. B. a liquid synthetic resin with fillers, delivered by a screw press 2. The mass strand 3 emerging from the nozzle of the screw press is carried on a conveyor belt 4 transported into the interior of the tubular shape 1. At the end of the conveyor belt 4 is a Stripper 5 and a cutting device 6 are provided, for example from opposite directions rotating knife rollers 14 (FIG. 3), between which the doughy Mass is passed through. The doughy mass strand 3 is through the cutting device divided into crumbs 7 which fall onto the inner wall of the tubular shape 1. To the drive a drive shaft 8 serves for the cutting device.
Die beschriebene Aufbereitungsanlage wird während des Beschickungsvorganges in der Rohrform 1 hin-und hergefahren. Dadurch ist eine gleichmäßige Verteilung der Krümel, die zum Aufbau der Rohrwand 9 führen sollen, gewährleistet. Die Rohrform kann an den Stirnseiten durch einen Ringdeckel 10 geschlossen sein.The processing system described is used during the loading process moved back and forth in the tubular shape 1. This ensures an even distribution the crumbs, which are to lead to the structure of the pipe wall 9, guaranteed. The tube shape can be closed on the front sides by a ring cover 10.
Bei der Ausführungsform der F i g. 2 entspricht der Vorgang der Herstellung des Hohlrohres im wesentlichen demjenigen der F i g. 1. Es ist lediglich die Vorrichtung zur Zerteilung des Massestranges 3 unmittelbar im Anschluß an die Schneckenpresse 2 angeordnet. Die durch die Schneidvorrichtung sich ergebenden Krümel werden in einem Förderrohr 11, vorzugsweise pneumatisch, an die Abgabestelle transportiert. In the embodiment of FIG. 2 corresponds to the manufacturing process of the hollow tube essentially that of FIG. 1. It's just the device for dividing the mass strand 3 immediately after the screw press 2 arranged. The crumbs resulting from the cutting device are in a conveying pipe 11, preferably pneumatically, transported to the delivery point.
Am Ende des Förderrohres 11 kann ein Umlenkblech 12 vorgesehen werden, durch das die Krümel zu der Innenwand der Rohrform 1 gebracht werden. In dem Förderrohr 11 kann an geeigneter Stelle eine Preßluft führende Zuleitung 13 angeordnet sein. Bei dieser Ausführungsform wird die gesamte Beschickungsvorrichtung über die Länge der Rohrform 1 verschoben. so daß die Rohrform im Inneren gleichmäßig mit den Krümeln aus der teigigen Masse angereichert werden kann.A deflector plate 12 can be provided at the end of the conveyor pipe 11, by which the crumbs are brought to the inner wall of the tubular form 1. In the conveyor pipe 11, a supply line 13 carrying compressed air can be arranged at a suitable point. In this embodiment, the entire loading device is over the length the tube shape 1 moved. so that the tube shape inside is even with the crumbs can be enriched from the doughy mass.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681778265 DE1778265C (en) | 1968-04-13 | Method and device for uniformly charging a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with 'dough-like masses of liquid or dissolved plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1778265B1 true DE1778265B1 (en) | 1972-05-31 |
Family
ID=5703355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681778265D Pending DE1778265B1 (en) | 1968-04-13 | 1968-04-13 | Method and device for the uniform charging of a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with dough-like masses of liquid or dissolved plastics |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1778265B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513751A1 (en) * | 1991-05-14 | 1992-11-19 | REAL GmbH | Method and device for producing a columnar hollow body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1101750B (en) * | 1953-03-02 | 1961-03-09 | Polymer Corp | Tubular hollow mold rotating around its horizontal longitudinal axis for the production of hollow bodies from organic plastic by centrifugal casting |
| US3150219A (en) * | 1959-08-25 | 1964-09-22 | Schmidt William Karl | Process of making plastic pipes |
-
1968
- 1968-04-13 DE DE19681778265D patent/DE1778265B1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1101750B (en) * | 1953-03-02 | 1961-03-09 | Polymer Corp | Tubular hollow mold rotating around its horizontal longitudinal axis for the production of hollow bodies from organic plastic by centrifugal casting |
| US3150219A (en) * | 1959-08-25 | 1964-09-22 | Schmidt William Karl | Process of making plastic pipes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0513751A1 (en) * | 1991-05-14 | 1992-11-19 | REAL GmbH | Method and device for producing a columnar hollow body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3402641B1 (en) | Device and method for treating fresh concrete | |
| EP3664981B1 (en) | System for applying a building material | |
| DE2649996A1 (en) | PROCESS AND APPARATUS FOR PRODUCING A FILLER-CONTAINING REACTION MIXTURE FROM AT LEAST TWO FLOWABLE COMPONENTS, IN PARTICULAR FOR PRODUCING POLYURETHANE | |
| DE2828506C2 (en) | Method and device for producing a foamable mixture of at least two flowable, foam-forming reaction components and additives | |
| DE2334796C2 (en) | Method and apparatus for producing a pipe made of concrete or the like. | |
| DE4210687C2 (en) | Device for dispensing viscous, hardening substances, and method for operating such a device | |
| DE69015981T2 (en) | Method and device for producing colored decorative plates based on flaked rock particles. | |
| EP0566830A1 (en) | Process and apparatus for preparing a fibre/resin composite moulding material, especially a prepreg | |
| DE7636489U1 (en) | DEVICE TO PREVENT THE ADDITION OF A COLD-HARDING SAND MIXTURE ON THE PARTS OF A MIXING DEVICE COMING INTO CONTACT WITH IT | |
| DE1679800A1 (en) | Mixing and discharge device for fillers and binders | |
| DE3206742A1 (en) | METHOD AND DEVICE FOR APPLYING MORTAR OR CONCRETE | |
| DE2213305A1 (en) | Injection molding machine | |
| DE2165148A1 (en) | Method and apparatus for mixing dry and liquid materials and for making reinforced plastic articles | |
| DE4203571A1 (en) | Freshly mixed lightweight polystyrene foam-concrete production at site - by mixing materials in screen plant, discharging under pressure to compressed air silo and carrying to user point by air flotation | |
| DE1778265C (en) | Method and device for uniformly charging a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with 'dough-like masses of liquid or dissolved plastics | |
| DE3544140A1 (en) | Process and apparatus for producing workable insulating building materials | |
| AT504803B1 (en) | APPENDIX FOR THE PRODUCTION AND PROCESSING OF WET-SPRAYING MIXTURE | |
| DE1778265B1 (en) | Method and device for the uniform charging of a pipe form used for the production of pipes and similar hollow forms in the centrifugal process with dough-like masses of liquid or dissolved plastics | |
| DE102016119754A1 (en) | Method for performing a material change in a feed device of an extruder | |
| DE102004027920B4 (en) | Plant for filling hollow blocks with thermal insulation has the filler components supplied from dry silos and premixed before final mixing with water and injecting into the blocks on a conveyor feed | |
| DE2523374A1 (en) | Continuous mortar mixer with endless screw metering dry mix - has partly filled mixing chamber with water inlet and screw discharge | |
| DE2325840A1 (en) | METHOD AND DEVICE FOR MIXING MATERIALS. ADDITIONAL TO: 2137277 AND TO: 2239475 | |
| DE4245074B4 (en) | Supply of viscous hardening reagents - by recirculating materials in ring mains and supplying to mixers by three=way valves when required | |
| AT208282B (en) | Process for the production of shaped bodies from granular masses and extrusion press for carrying out the process | |
| DE2166208A1 (en) | Moulding reinforced plastics - with controlled temp extruder to prevent premature curing |