Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D19/00—Keeping dry foundation sites or other areas in the ground
  • E02D19/06—Restraining of underground water
  • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
  • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay 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
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
  • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
  • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
• • 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
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/001—Joining in special atmospheres
• • 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
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/01—General aspects dealing with the joint area or with the area to be joined
  • B29C66/05—Particular design of joint configurations
  • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
  • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
  • B29C66/112—Single lapped joints
  • B29C66/1122—Single lap to lap joints, i.e. overlap joints
• • 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
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
  • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
  • B29C66/43—Joining a relatively small portion of the surface of said articles
• • 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
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/80—General aspects of machine operations or constructions and parts thereof
  • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
  • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
  • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
  • B29C66/83411—Roller, cylinder or drum types
  • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
• • 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
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
  • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
  • B29C66/43—Joining a relatively small portion of the surface of said articles
  • B29C66/435—Making large sheets by joining smaller ones or strips together

Definitions

• the invention relates to a protective housing for receiving a treatment device for processing plastic films or composite materials or plates in a liquid, mushy or liquid gelatinous mass, and a method for welding sealing sheets and / or plates in liquid, mushy or liquid gelatinous mass Dimensions.
• the present invention aims to improve the welding of plastic sealing sheets which are immersed in liquid during welding.
• the protective housing according to the invention is characterized by the content of one of the claims.
• FIG. 1 shows a cross section through an earth slot with a sealing membrane and with surrounding soil
• FIG. 2 shows a perspective view of a detail from an earth slot with sealing lanes while welding two lanes
• FIG. 3 shows a detail from the illustration according to FIG. 2, with the protective housing in operation
• FIG. 5 shows a section through the protective housing along section line V-V of FIG. 4,
• FIG. 6 shows the protective housing according to FIG. 5 in the welded position, with parts of the sealing sheets broken away.
• FIG. 1 shows a section of the soil in the form of a landfill 33 and an earth slot 30 with plastic sealing sheets 32
• FIG. 2 provides details from the earth slot 30.
• the earth slot 30 filled with bentonite 31 and sealing sheets 32 lowered therein form a diaphragm wall construction.
• Diaphragm walls are used to encapsulate landfills 33 and other purposes.
• an earth slot 30 is first introduced into the soil, while the earth slot is simultaneously filled with bentonite 31 or a similar supporting mass. If the depth is low, an excavator is used. So-called trench cutters are used at greater depths. So-called narrow walls are produced by displacing the earth material with the help of a pile-like ram body.
• a support compound such as bentonite 31 has a sealing effect. Compared to grown soil, bentonite is therefore significantly less permeable to liquids. That is why there are a number of diaphragm walls that were only built with bentonite without sealing sheets. Cement or similar hardening agent is preferably added to the bentonite, so that the supporting mass in the earth slot 30 hardens.
• the plastic seal is composed of individual sealing tarpaulins or sheets 9a, 9b.
• the sealing sheets 9a, 9b are lowered one after the other from rollers 20 in the excavated earth slot filled with bentonite 31. After that, the problem of Aneinande 'r concursgens the Abdichtungsbahnen ⁇ edges.
• the webs 9a, 9b are to be welded liquid-tight at the edges 22. A device must be used for this.
• a protective housing 1 a locally encloses the welding area 23.
• This housing 1 a is made up of one or more parts. It is sealed against the ingress of liquid from the outside by material seals and / or internal air and / or gas pressure. It moves synchronously with a welding device 10 and other devices accommodated in the housing 1 a. Holding devices made from rollers 17 and / or from shaped retainers for guiding and holding the plastic sealing sheets 9a, 9b are used.
• the energy required for the welding can be obtained by means of hot air and / or a heating wedge 10b, c and / or heat radiation and / or chemically generated heat.
• the feed necessary for the welding can be accomplished via driven pressure rollers 10a and / or pulling devices 19 arranged outside the device.
• the device has a housing 1a of, for example, a cubic construction according to FIGS. 3-5.
• This housing la has a central web 1, frame walls on the left 2a, 2b, frame walls on the right 3a, 3b, a cover 4a, 4b, a base 5a, 5b and a front wall 6a and a rear wall 6b.
• the central web 1 is shorter than the frame walls 2a, 2b or 3a, 3b.
• the middle part 1 is missing in the lower part.
• Two chamber halves 7a, 7b then arise, which are connected to one another in the lower housing part, where the central web 1 is missing. This construction is particularly necessary when the webs 9a, 9b have to be welded or connected to one another.
• the central web 1 is designed to run out at the bottom. For easier communication, all housing parts which are located in front of the central web 1 are designated with the index a, those behind the central web 1 with the index b.
• a slot 8a is arranged in the frame wall 2a, 2b in such a way that it begins in the area of the cover 4a directly at the front next to the middle wall 1 and follows the middle wall in the area of the frame wall 2a. Where the middle wall 1 ends, the slot follows the imaginary extension of the center line of the middle wall 1 until it emerges through the floor area.
• An analog slot 8b is arranged in such a way that it begins in the cover 4b immediately behind the central wall 1 and follows it in the region of the frame wall 3b. Where there is no longer a central wall 1, this slot opens tangentially in the area of the frame wall 3b into the slot which begins in the lid area.
• the two slots 8a, 8b penetrate more than half, for example a few cm more, into the lid 4a, 4b or bottom 5a, 5b. This makes it possible to guide the webs 9a, 9b through the housing 1a such that they overlap one another.
• the chamber halves 7a, 7b can additionally be subdivided in the area of the central wall 1, so that chambers 7.1a, 7.1b, 7.2a, 7.2b stand. These chambers are used to hold additional functions.
• a welding device analogous to the patents CH 618 627 and CH 638 132 is installed in the housing 7a, 7b.
• the heating wedge 10b, 10c can be made in one part or in multiple parts, the wedge parts 10b, 10c being able to be displaced relative to one another such that either a double seam 24 or a single seam 25 is produced.
• the wedge parts can partly be conical.
• 7.2a, 7.2b is a cleaning system with pressurized water
• a cutting device 13 is located outside the chamber halves 7a, 7b.
• a seam inspection system 14, for example operated with ultrasound, can be provided below the welding device.
• the webs 9a, 9b to be welded or machined are inserted into the corresponding slots 8a and 8b.
• the width of the slots 8a, 8b should be a few tenths of a millimeter wider than the web thickness.
• the slots 8a, 8b can be sealed by material seals, for example elastic sealing lips 15. The distance between the sealing lips 15 must completely close the slot 8a, 8b before the webs 9a, 9b are introduced.
• the chambers 7a, 7b, 7.1a, 7.1b, 7.2a, 7.2b can additionally or exclusively be sealed against the ingress of liquid from the outside by internal air or gas overpressure.
• Relief holes 16 allow moisture, water and / or solids in the chambers to be released to the environment. For this purpose, check valves 16a are installed.
• the webs 9a, 9b are held by holding rollers 17 or other holding devices in such a way that they cannot escape from the slots 8a, 8b.
• Energy such as electricity, water, compressed air, is supplied to the device via flexible lines 18. Within the device, distribution takes place via the central web 1 to the corresponding chambers and devices.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Hydrology & Water Resources (AREA)
• Mining & Mineral Resources (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Paleontology (AREA)
• Civil Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Processing Of Solid Wastes (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Containers And Plastic Fillers For Packaging (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4222386

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (6)

• 1989
  • 1989-05-24 CH CH1950/89A patent/CH678932A5/de not_active IP Right Cessation
• 1990
  • 1990-05-21 EP EP90906838A patent/EP0426796A1/de not_active Withdrawn
  • 1990-05-21 WO PCT/CH1990/000131 patent/WO1990014214A2/de not_active Application Discontinuation

Non-Patent Citations (1)

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