EP0051065A1 - A method of cleaning moulds in a long mould bed for casting consecutive concrete elements and a rail-bound mould-cleaning carriage - Google Patents

A method of cleaning moulds in a long mould bed for casting consecutive concrete elements and a rail-bound mould-cleaning carriage

Info

Publication number
EP0051065A1
EP0051065A1 EP81900723A EP81900723A EP0051065A1 EP 0051065 A1 EP0051065 A1 EP 0051065A1 EP 81900723 A EP81900723 A EP 81900723A EP 81900723 A EP81900723 A EP 81900723A EP 0051065 A1 EP0051065 A1 EP 0051065A1
Authority
EP
European Patent Office
Prior art keywords
mould
carriage
cleaning
rail
concrete
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.)
Withdrawn
Application number
EP81900723A
Other languages
German (de)
French (fr)
Inventor
Sven SÖDERBERG
Ingvar Steen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A-BETONG AB/SABEMA MATERIAL AB
Abetong AB
Original Assignee
A-BETONG AB/SABEMA MATERIAL AB
Abetong AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A-BETONG AB/SABEMA MATERIAL AB, Abetong AB filed Critical A-BETONG AB/SABEMA MATERIAL AB
Publication of EP0051065A1 publication Critical patent/EP0051065A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/386—Cleaning

Definitions

  • the present invention relates to a method of cleaning moulds for casting consecutive concrete elements, such as concrete sleepers, a long bed comprising a plurality of mutually adjacent, vertically movable such moulds or forms.
  • a method of manufacturing a plurality of sequential pre-tensioned concrete elements, for example concrete sleepers, in a long mould bed is described in Swedish
  • Patent Specification No. 77 05021-9 US Patent 3 732 044 describes a production line for products of prestressed concrete comprising certain installations for cleaning and oiling.
  • the various moulds in the mould bed can be thoroughly cleaned of concrete residues after the mould- stripping operation.
  • the cleaning operation obtains, moreover, particular significance in those instances, when the mould shall be prepared in a manner to enable separate insert elements, such as rubber plates, to be cast in the concrete elements.
  • any concrete particles which remain in the mould may cause the insert elements to be positioned obliquely when placed in the mould, which has disastrous consequences in respect of the quality of the cast concrete element.
  • Experiments have shov/n that it is not sufficient to vacuum clean the mould, because of the strength with which residual concrete particles adhere to the sides of the mould.
  • the moulds are cleaned from concrete residues by .the combined action of blowing and scraping with the use of vertically movable scraper devices arranged to contact the inner surfaces of the mould, and with the use of blower nozzles inserted in the mould.
  • blower nozzles which are suitably in the form of fan valves, produce a linear jet of air which cuts like a knife against concrete particles adhering to the mould.
  • the scraper devices are, in turn, used primarily to remove concrete particles in the region where the insert elements are later to be mounted, since it is of particular importance that said insert elements are placed correctly in the mould.
  • Figure 1 is a plan viev/ of the cleaning carriage.
  • Figure 2 is a front viev/ of the carriage illustrated in Figure 1.
  • Figure 3 is a side view of the carriage illustrated in Figures 1 and 2.
  • Figure 4 illustrates on the left side thereof part of the side view of the carriage according to Figure 3 in larger scale, while to the right of Figure 4 is illustrated a corresponding part of the carriage in front view and in the same scale as the left part of the figure.
  • the work of preparing the mould for renewed casting shall then begin.
  • the prime work in connection herewith is the cleaning of the mould, whereat there is used a separate cleaning carriage which will be described hereinafter.
  • the mould shall also be oiled, which is suitably cone after placing in the mould separate elements, such as rubber plates (not shown), which are to be cast in the concrete elements.
  • the illustrated cleaning carriage comprises a robust frame structure 61 having four wheels 62 arranged to run on rails 30 and driven by a reversible air motor 63 via a chain.
  • the carriage has four pneumatic cylinders 64 and two pneumatic cylinders 65 for moving holders 66 up and down.
  • the holders 66 carry a plurality of fanlike blow nozzles 67 arranged to produce linear air flows under high pressure against the sides of the mould.
  • the nozzles co-act with sixteen scraper plates 78, arranged to engage the sides of the mould and therewith to cleanse said sides of concrete residues.
  • the scraper plates 78 are arranged to move up and down under the action of cylinders 65A and 65B which carry out a slow, oscillating movement.
  • Also arranged on the carriage is an air compressor 68 and four magnet valves 69.
  • the cleaning carriage is also arranged to move along the mould bed at two speeds.
  • the motor 63 drives the carriage at a maximum speed until the motor receives a signal for creep driving.
  • the carriage then moves slowly forwards until it reaches its correct position, whereat the motor stops and the cylinder 64 locks the carriage in this position.
  • the cylinder 65A then begins to move under the action of a limit switch (not shown), whereat the magnet valve 69A opens.
  • the cylinder 65A then returns until a further limit switch (not shown) is activated, whereat the direction of movement of the cylinder is reversed, etcetera.
  • a time relay (not shown) is activated, which causes cyclic closing and opening of the valves 69A and 693, whereat air under high pressure is delivered from the nozzles 67 at suitable intervals.
  • the carriage is also provided with an anti-collision device having a safety switch 79.
  • an anti-collision device having a safety switch 79.
  • Separate protective plates 18 prevent concrete residues from splashing against the nozzles, for example, during a cleaning operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Cleaning In General (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Artificial Fish Reefs (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Pour couler des elements consecutifs en beton tels que des traverses en beton, on utilise un lit allonge de moules comprenant une pluralite de moules mobiles verticalement adjacents entre eux. Le demoulage, l'enlevement des elements en beton coule, le nettoyage du moule et la preparation pour une autre operation de coulage sont effectues a l'aide de chariots mobiles sur des rails le long du lit a moules. Le moule est nettoye en utilisant un chariot separe ayant une pluralite de grattoirs mobiles verticalement (78) concus pour engager les cotes du moule et une pluralite d'ajutages (67) envoyant un jet d'air a haute pression.To pour consecutive concrete elements such as concrete sleepers, an elongated mold bed is used comprising a plurality of movable molds vertically adjacent to each other. Demoulding, removal of poured concrete elements, cleaning of the mold and preparation for another casting operation are carried out using mobile carriages on rails along the mold bed. The mold is cleaned using a separate carriage having a plurality of vertically movable scrapers (78) designed to engage the dimensions of the mold and a plurality of nozzles (67) sending a jet of air at high pressure.

Description

A method of cleaning moulds in a long mould bed for casting consecutive concrete elements and a rail-bound mould-cleaning carriage
Technical Field
The present invention relates to a method of cleaning moulds for casting consecutive concrete elements, such as concrete sleepers, a long bed comprising a plurality of mutually adjacent, vertically movable such moulds or forms.
Background art
A method of manufacturing a plurality of sequential pre-tensioned concrete elements, for example concrete sleepers, in a long mould bed is described in Swedish
Patent Specification No. 77 05021-9. US Patent 3 732 044 describes a production line for products of prestressed concrete comprising certain installations for cleaning and oiling.
Objects of invention
To enable concrete elements to be manufactured in accordance with factory standards, it is particularly important that the various moulds in the mould bed can be thoroughly cleaned of concrete residues after the mould- stripping operation. The cleaning operation obtains, moreover, particular significance in those instances, when the mould shall be prepared in a manner to enable separate insert elements, such as rubber plates, to be cast in the concrete elements. As will be understood, any concrete particles which remain in the mould may cause the insert elements to be positioned obliquely when placed in the mould, which has disastrous consequences in respect of the quality of the cast concrete element. Experiments have shov/n that it is not sufficient to vacuum clean the mould, because of the strength with which residual concrete particles adhere to the sides of the mould. Thus, in order to remove concrete residues the mould sides must be subjected to some kind of mechanical working, although experiments have shov/n that this does not. provide a fully satisfactory result either. It has surprisingly been found, however, that mechanical working of the mould sides by means of suitable scraping devices, e.g. scraper plates, while blowing air under high pressure into the mould through nozzles let into the mould provides a very good result.
Brief summary of invention In the method according to the invention the moulds are cleaned from concrete residues by .the combined action of blowing and scraping with the use of vertically movable scraper devices arranged to contact the inner surfaces of the mould, and with the use of blower nozzles inserted in the mould.
The blower nozzles, which are suitably in the form of fan valves, produce a linear jet of air which cuts like a knife against concrete particles adhering to the mould. The scraper devices are, in turn, used primarily to remove concrete particles in the region where the insert elements are later to be mounted, since it is of particular importance that said insert elements are placed correctly in the mould.
Because the scraper devices move up and down in the mould, an effective mechanical cleaning operation is effected, while subjecting the adhering concrete particles to strong jets of air at the same time. The removed concrete residues collect in the bottom of the mould, from which they can be readily removed with the aid of a vacuum-cleaner suitably arranged on a rail-bound carriage following said mould-cleaning carriage.
A preferred embodiment of a cleaning carriage provided with scraper devices and blow nozzles, for use when applying the invention will now be described in more detail with reference to the accompanying schematic drawings.
Brief description of the Drawings
Figure 1 is a plan viev/ of the cleaning carriage.
Figure 2 is a front viev/ of the carriage illustrated in Figure 1.
Figure 3 is a side view of the carriage illustrated in Figures 1 and 2.
Figure 4 illustrates on the left side thereof part of the side view of the carriage according to Figure 3 in larger scale, while to the right of Figure 4 is illustrated a corresponding part of the carriage in front view and in the same scale as the left part of the figure.
Description of the preferred embodiment
When casting consecutive co-ricrete elements such as concrete sleepers in a long mould bed comprising a plurality of mutually adjacent, vertically movable moulds with the use of carriages arranged for movement along the bed on rails, subsequent to casting and hardening the concrete elements the moulds are successively stripped. For that purpose special devices (not shov/n) may be used located on a carriage and arranged to withdraw the mould holders of respective moulds and to release the cast concrete elements by pressing the mould dov/n against vertically movable mould holder elements swung in beneath the mould. The cast concrete elements may then be removed by using special carriages for this purpose.
The work of preparing the mould for renewed casting shall then begin. The prime work in connection herewith is the cleaning of the mould, whereat there is used a separate cleaning carriage which will be described hereinafter. The mould shall also be oiled, which is suitably cone after placing in the mould separate elements, such as rubber plates (not shown), which are to be cast in the concrete elements.
The illustrated cleaning carriage comprises a robust frame structure 61 having four wheels 62 arranged to run on rails 30 and driven by a reversible air motor 63 via a chain. The carriage has four pneumatic cylinders 64 and two pneumatic cylinders 65 for moving holders 66 up and down. The holders 66 carry a plurality of fanlike blow nozzles 67 arranged to produce linear air flows under high pressure against the sides of the mould. The nozzles co-act with sixteen scraper plates 78, arranged to engage the sides of the mould and therewith to cleanse said sides of concrete residues. The scraper plates 78 are arranged to move up and down under the action of cylinders 65A and 65B which carry out a slow, oscillating movement. Also arranged on the carriage is an air compressor 68 and four magnet valves 69.
The cleaning carriage is also arranged to move along the mould bed at two speeds. Thus, the motor 63 drives the carriage at a maximum speed until the motor receives a signal for creep driving. The carriage then moves slowly forwards until it reaches its correct position, whereat the motor stops and the cylinder 64 locks the carriage in this position. The cylinder 65A then begins to move under the action of a limit switch (not shown), whereat the magnet valve 69A opens. The cylinder 65A then returns until a further limit switch (not shown) is activated, whereat the direction of movement of the cylinder is reversed, etcetera. At the same time a time relay (not shown) is activated, which causes cyclic closing and opening of the valves 69A and 693, whereat air under high pressure is delivered from the nozzles 67 at suitable intervals.
When the cylinder 64 has moved to its starting position, the motor 63 is started and a nev/ cycle commences.
The carriage is also provided with an anti-collision device having a safety switch 79. Separate protective plates 18 prevent concrete residues from splashing against the nozzles, for example, during a cleaning operation.

Claims

Claims
1. A method of cleaning a mould for casting consecutive concrete elements, characterized by cleaning the mould of concrete residues by combined blowing and scraping operations v/ith the use of vertically movable scraper devices engaging the inner surfaces of the mould and blow nozzles arranged in the mould for delivering a jet of air at high pressure.
2. A method according to claim 1, characterized by using a rail-bound movable carriage for carrying the scraper devices and the blow nozzles and moving said carriage along the mould bed.
3. A method according to claim 2, characterized by locking the carriage on the rails before aczivating the scraper devices and the blow nozzles.
4. A rail-bound cleaning carriage for use when manufacturing con-secutive concrete elements, in an elongate bed of sequential moulds, said carriage including a frame structure (61) provided v/ith rail- bound wheels (62) and a drive motor (63), characterized by means (61) for releasably fixing the carriage in an exact location, relative to the mould (16), vertically movable scraper means (78) arranged to engage the inner surfaces of the mould to clean said surfaces of concrete residues, vertically movable blow nozzles (67) arranged for lowering into, the mould, and a compressor (63) and a plurality of magnet valves (69) connected to blow nozzles (67) for delivering an air stream under high pressure therefrom.
EP81900723A 1980-03-14 1981-03-13 A method of cleaning moulds in a long mould bed for casting consecutive concrete elements and a rail-bound mould-cleaning carriage Withdrawn EP0051065A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8002029A SE422543B (en) 1980-03-14 1980-03-14 KIT FOR CASTING CONCEPTIVE CONCRETE ELEMENTS IN A LONG SHAPE BED AND RAILBALL FOR MOLDING TROLLEY FOR USE IN EXECUTING THE KIT
SE8002029 1980-03-14

Publications (1)

Publication Number Publication Date
EP0051065A1 true EP0051065A1 (en) 1982-05-12

Family

ID=20340519

Family Applications (2)

Application Number Title Priority Date Filing Date
EP81900724A Expired EP0055708B1 (en) 1980-03-14 1981-03-13 A method of manufacturing consecutive concrete elements in a long mould bed, and a rail-bound carriage for mould-stripping
EP81900723A Withdrawn EP0051065A1 (en) 1980-03-14 1981-03-13 A method of cleaning moulds in a long mould bed for casting consecutive concrete elements and a rail-bound mould-cleaning carriage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP81900724A Expired EP0055708B1 (en) 1980-03-14 1981-03-13 A method of manufacturing consecutive concrete elements in a long mould bed, and a rail-bound carriage for mould-stripping

Country Status (9)

Country Link
EP (2) EP0055708B1 (en)
JP (1) JPS57500278A (en)
BR (1) BR8108738A (en)
CA (2) CA1164190A (en)
DE (1) DE3165490D1 (en)
NO (1) NO149461C (en)
SE (1) SE422543B (en)
WO (2) WO1981002701A1 (en)
ZA (2) ZA811453B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524928A1 (en) * 1982-04-08 1983-10-14 Atlantique Ingenierie Polisher for flat surfaces such as formwork pieces - has deformable parallelogram for carriage support to polishers
GB2311747A (en) * 1996-04-04 1997-10-08 Nordimpianti Otm Srl Process and plant for the production of pre-stressed concrete products
CN107053451B (en) * 2017-05-24 2019-04-23 廊坊海斯建材机械有限公司 A kind of railway spring supporting block production line and its production technology
CN110614705A (en) * 2019-10-31 2019-12-27 北京好运达智创科技有限公司 Track slab mold cleaning device and method
CN112207966A (en) * 2020-09-22 2021-01-12 临沂周兴建材有限公司 Ceiling edge bonding machine
CN112900268B (en) * 2021-01-12 2023-02-17 中铁七局集团武汉工程有限公司 Mounting process of full-hall support and template system
CN112895103B (en) * 2021-01-23 2022-06-14 邵阳市通恒建材有限公司 Method for casting and molding concrete perforated brick
IT202100006473A1 (en) * 2021-03-18 2022-09-18 Wegh Group S P A APPARATUS AND METHOD OF APPLYING A CARPET TO A RAILWAY SLEEPER
CN114453285B (en) * 2021-12-23 2023-05-30 江西九鼎建设集团有限公司 Coaming processing equipment for cement forming of construction site

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1534932A1 (en) * 1963-05-15 1969-09-11 Wilhelm Grinke Device for cleaning Bauhoelzern such as shuttering boards, panels, beams, strips or the like.
DE1534943A1 (en) * 1965-03-06 1969-09-11 Wilhelm Grinke Device for cleaning and sanding surfaces in construction companies, in particular construction timber
DE1684528A1 (en) * 1967-07-03 1971-04-22 Jakob Wenzel Cleaning and impregnation machine for the building trade
FR2062090A5 (en) * 1969-10-10 1971-06-25 Borcoman Mirdea
CH536700A (en) * 1970-03-13 1973-05-15 Tihamer Dr Koncz Equipment for the production of large concrete slabs
SE402873B (en) * 1976-07-16 1978-07-24 Tenax Maskin Ab MACHINE FOR CONCRETE CASTING

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8102701A1 *

Also Published As

Publication number Publication date
NO149461C (en) 1984-04-25
EP0055708B1 (en) 1984-08-15
BR8108738A (en) 1982-06-22
WO1981002702A1 (en) 1981-10-01
DE3165490D1 (en) 1984-09-20
EP0055708A1 (en) 1982-07-14
NO813813L (en) 1981-11-11
ZA811453B (en) 1982-04-28
SE8002029L (en) 1981-09-15
CA1164190A (en) 1984-03-27
JPS57500278A (en) 1982-02-18
WO1981002701A1 (en) 1981-10-01
NO149461B (en) 1984-01-16
ZA811457B (en) 1982-04-28
CA1165984A (en) 1984-04-24
SE422543B (en) 1982-03-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19820601

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Inventor name: SOEDERBERG, SVEN

Inventor name: STEEN, INGVAR