WO1998024613A1 - Appareil de soudage pour tuyaux en plastique - Google Patents

Appareil de soudage pour tuyaux en plastique Download PDF

Info

Publication number
WO1998024613A1
WO1998024613A1 PCT/CH1996/000428 CH9600428W WO9824613A1 WO 1998024613 A1 WO1998024613 A1 WO 1998024613A1 CH 9600428 W CH9600428 W CH 9600428W WO 9824613 A1 WO9824613 A1 WO 9824613A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
welding device
guide rod
guide
plastic
Prior art date
Application number
PCT/CH1996/000428
Other languages
German (de)
English (en)
Inventor
Rindo Marcassoli
Original Assignee
Rindo Marcassoli
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 Rindo Marcassoli filed Critical Rindo Marcassoli
Priority to PCT/CH1996/000428 priority Critical patent/WO1998024613A1/fr
Publication of WO1998024613A1 publication Critical patent/WO1998024613A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B25B5/147—Clamps for work of special profile for pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/20—Vices for clamping work of special profile, e.g. pipes
    • B25B1/205—Vices of the chain or strip type
    • 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"
    • B29C65/2053—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" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2084—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" characterised by special ways of bringing the welding mirrors into position by pivoting
    • 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"
    • B29C65/2092—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" and involving the use of a facer
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/922—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9221—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power

Definitions

  • the invention relates to a welding device for connecting plastic pipes according to the preamble of patent claim 1.
  • plastic tubes which can serve different purposes, are built in ceilings or walls. Recesses are formed in the concrete to accommodate the pipes.
  • the pipes used are usually made of thermoplastic.
  • this casing consists of two horizontally guided beams, which are attached to the side walls of the recess. These beams are supported outside the recess by steel girders.
  • the two beams carry a rectangular piece of formwork board within the wall recess. This piece of board is nailed to the beam. The size and shape of this piece of board correspond essentially to the cross section of the wall recess.
  • the lower reinforcement is then produced.
  • the mason usually uses a crowbar for this. He presses the piece of board down with this crowbar. At the beginning you need a lot of effort, because the nails with which the board piece is attached have to be loosened first. When the board piece is loosened, it is pulled down along the protruding pipe stub. The pipe stump is often damaged. It gets scratches and cracks or is compressed so that its cross-sectional shape changes.
  • a plastic tube is welded onto the vertically protruding pipe stub.
  • welding is not possible if the pipe stub is deformed and has an oval cross section instead of a round one.
  • the section of the pipe stub immediately adjacent to the ceiling is normally not deformed because it is sufficiently stabilized by the concrete.
  • the deformed, lower section of the tube end is sawn off. According to the prior art, a hand saw is used for this.
  • using a hand saw poses problems because there is not enough space in the wall cut-out for unobstructed sawing. You always hit the hand saw on the back of the wall recess. The sawing work is therefore tedious and time-consuming.
  • manual welding devices or automatic welding devices are used for connecting plastic pipe pieces by welding.
  • the manual welding devices essentially consist of a round aluminum heating plate with a handle.
  • the heating plate is heated electrically.
  • a thermostat keeps its temperature constant at 220 ° C. So that the plastic of the pipes does not stick to the heating plate, it is coated with Teflon.
  • the welding comprises the following work steps: First, the end faces of the two plastic tubes to be welded are ground so that they are free of oxides. After that they are made by hand pressed against the two surfaces of the heating plate until a sufficiently thick layer of plastic has melted at the pipe ends. The heating plate is then removed and the heated ends of the two tubes are pressed together. In order for a stable connection to be created, a certain minimum pressure must be used. This pressure can no longer be achieved by hand in pipes with a diameter of over 63 mm.
  • the automatic welding devices known from the prior art for connecting plastic pipes normally comprise two clamping devices for fastening the two plastic pipes to be connected and a heating device for heating the pipe ends.
  • the clamping devices usually consist of two jaws, between which the plastic tube is clamped.
  • Patent specification CH 684 525 (publication date October 4, 1994) describes, for example, an automatic welding device in which one of two pipe clamping devices is attached to a sliding carriage. The other clamping device is stationary. The plate-shaped heating device can be pushed in between the two clamping devices.
  • Patent specification WO 92/09419 (publication date June 11, 1992) proposes an automatic welding device in which two clamping devices are fastened so as to be displaceable relative to one another on a rail.
  • the clamping devices are each driven by a hydraulic cylinder.
  • the heating device is composed of two plates. Pressure sensors are arranged between the two plates, which measure the pressure with which the pipe ends are pressed against the heating device. The measured pressure values are used to control the hydraulic cylinders.
  • welding devices with plate-shaped heating devices welding devices with cuffed or ring-shaped heating devices are also known.
  • Patent specification WO 90/00112 (publication date January 11, 1990) proposes an automatic welding device whose heating device consists of electrically heatable jaws. The two jaws are pivotally connected to one another. When closed, the two jaws encompass the end sections of the plastic tube to be connected.
  • the heater is attached to a frame.
  • a pipe clamping device is axially adjustable.
  • the object of patent specification WO 90/11884 (published on October 18, 1990) is an automatic welding device with two clamping devices, which fix the two plastic tubes to be connected abutting one another on the end face.
  • the heating device encompasses the end sections of the two plastic tubes and heats them from the outside.
  • the end sections of the plastic tube are held with a vacuum on the inner circumference of the heating device. This can prevent a bulge from forming on the inside of the weld seam.
  • the formation of beads can also be prevented with the aid of support bodies which are inserted into the interior of the tube and the surface of which lies against the inside of the tube wall.
  • patent specification WO 88/06966 (publication date September 22, 1988) also proposes to provide undercuts on the end faces of the pipes to be connected. This creates space within the thickness of the tube wall for the softened plastic that is moved when the two plastic tubes are pressed together. The softened plastic is absorbed by the undercuts and therefore does not come out on the inside of the pipe wall.
  • the object of the invention is therefore to create an automatic welding device which makes it possible to connect plastic tubes which are arranged in recesses in building walls, ceilings and floors with a sufficiently high pressure by welding.
  • the proposed welding device is intended for situations in which one of the two pieces of plastic pipe to be connected is partially walled in and is thereby already fixed. No clamping device is consequently necessary for this plastic tube piece.
  • the proposed welding device therefore has only one pipe clamping device.
  • the welding device is fastened with a base plate to the surface from which the walled-in piece of plastic pipe protrudes.
  • the base plate carries a pivotable rail on which a slide is slidably attached.
  • a guide rod is connected to the slide via a swivel joint and a tilt joint.
  • a tube tensioning device is fastened so that it can move in the longitudinal direction of the guide rod.
  • the guide rod also carries a yoke.
  • the yoke is in the middle the guide rod slidably and rotatably connected. It has a heating plate on one arm and a motor-driven grinding wheel on the other arm.
  • the yoke arm which carries the grinding wheel, is pivoted into the recess in the wall, ceiling or floor and the yoke is moved in the direction of the base plate.
  • the yoke arm To heat the pipe ends, first swivel the yoke arm with the heating plate into the recess. Then the yoke together with the pipe clamping device is pressed in the direction of the base plate until both the end face of the pipe stub and the end face of the free pipe piece lie against the heating plate. As soon as the plastic has melted sufficiently, the free piece of pipe is lifted from the heating plate and this from the pipe stub. The arm with the heating plate is then swung out of the recess. Finally, the pipe clamping device is moved again in the direction of the base plate and the heated end face of the free pipe section is pressed against the heated end face of the pipe stub.
  • Figure 1 is a side view of a welding device according to the invention, which is attached to a building ceiling.
  • Fig. 2 is a plan view of a base plate of a welding machine ge ass Fig. 1;
  • FIG. 3a shows a top view of the carriage of a welding device according to FIG. 1;
  • FIG. 3b shows a side view of a slide according to FIG. 3a;
  • FIG. 3c shows a cross section through a carriage according to FIG. 3a;
  • Fig. 4a is a plan view of an arm of a pipe clamping device of the welding device according to Fig. 1 with a clamped thin pipe and
  • FIG. 4b is a plan view of an arm of a pipe clamping device ge ass Fig. 3a with a clamped thick pipe.
  • FIG. 1 of the proposed welding device is attached to the ceiling 52 of a room.
  • a base plate 1 is used for fastening.
  • the shape of the base plate 1 essentially corresponds to an acute-angled circular sector (cf. FIG. 2).
  • the edge areas of the base plate 1 are raised.
  • the base plate 1 is fastened to the ceiling 52 with a single screw 3.
  • a dowel is used for fastening.
  • the base plate is provided with a continuous round hole 4 near its pointed corner 6.
  • a rail 2 is arranged on that side of the base plate 1 which faces away from the ceiling 52.
  • the rail 2 is pivotally attached to the base plate 1. The pivot point is located near the sharp corner 6 of the base plate 1 on its bisector.
  • the raised edge area 7 on the curved edge of the base plate 1 has a continuous groove. That end of the rail 2 which faces away from the pivot point projects into this groove and is guided through it.
  • the rail 2 has a threaded bore on this end face, into which a locking screw 8 is screwed. With this locking screw 8, the rail 2 can be locked in any angular position.
  • the rail 2 has an essentially U-shaped cross section (cf. FIG. 3c).
  • the two legs of the rail 2 each have an inwardly projecting rib 9 at their free end.
  • a slide 10 is fastened axially displaceably to the rail 2.
  • the carriage 10 has an essentially guader-shaped base body 11 (cf. FIGS. 3a to 3c).
  • a web 12 projects from each of the two longitudinal narrow sides of the base body 11.
  • the two webs 12 have an L-shaped cross section and extend over the entire length of the carriage 10.
  • each narrow side has a longitudinal groove 13 directly next to the web 12.
  • These longitudinal grooves 13 each receive a rib 9 on the rail 2.
  • the two webs 12 each have a free end of one leg of the rail 2, so that the carriage 10 is in Moved longitudinally of the rail 2, but can not be lifted off the rail 2.
  • the carriage 10 can be locked in any longitudinal position on the rail 2 with two locking screws 53.
  • the base body 11 is provided in the vicinity of its two end faces with a continuous threaded bore (see FIG. 3a).
  • a connecting piece 14 is rotatably attached in the center of that side of the slide 10 which faces away from the rail 2.
  • the connecting piece 14 can be locked in any rotational position with the aid of a set screw 15 (cf. FIGS. 3a and 3b).
  • That section of the connecting piece 14 which faces away from the slide 10 is designed as a fork 17 of a joint 16.
  • This fork joint 16 connects a guide rod 18 to the connecting piece 14.
  • One end of the guide rod has a plate-shaped projection 19.
  • the outer end face of this projection 19 is rounded.
  • the projection 19 is inserted between the two arms of the joint fork 17.
  • the axis of rotation of the fork joint 16 is formed by a cylindrical bolt 20 which penetrates the two arms of the joint fork 17 and the projection 19 of the guide rod 18.
  • the fork arms and the projection 19 are provided with suitable, mutually aligned bores.
  • the fork joint 16 can also be equipped with a set screw (not shown), which makes it possible to lock the joint
  • a yoke 21, a tube tensioning device 22 and a pushing device 23 are fastened to the guide rod 18 (cf. FIG. 1).
  • the yoke 21 has a central guide part 24 and two arms 25 projecting laterally from this guide part 24. So that the guide part 24 can be pushed onto the guide rod 18, it is provided with a continuous, cylindrical bore, the diameter of which corresponds to the diameter of the guide rod 18.
  • the yoke 21 is displaceable along the guide rod 18 and rotatable about the guide rod 18.
  • the two arms 25 of the yoke 21 preferably lie in one plane. They are angled at an obtuse angle in the direction of the base plate 1.
  • Each arm 25 preferably has a lockable one Tilt joint 54, so that the outer section of each arm 25 can be folded down.
  • a preferably round heating plate 26 is attached to the outer end of one arm 25. It runs parallel to the base plate 1.
  • the heating plate 26 is heated by an electrical resistance heater. It can be made of aluminum and coated with Teflon.
  • the power supply to the electrical resistance heating is carried out with the aid of a cable 27, which runs inside the arm 25 to the guide part 24 and exits the yoke 21 there.
  • a grinding device 28 is attached to the outer end of the other arm 25. It consists of a carrier plate 29 on which a grinding wheel 30 is rotatably attached. Both the carrier plate 29 and the grinding wheel 30 run parallel to the base plate 1.
  • the grinding wheel 30 is arranged on that side of the carrier plate 29 which faces the base plate 1.
  • It is attached to the carrier plate 29 with the aid of a shaft 31, which projects at a right angle from the center of the grinding wheel 30.
  • This shaft 31 runs through a bore in the carrier plate 29.
  • the projecting section of the shaft 31 can be clamped in a drill chuck of an electric drill 41.
  • the drilling machine 41 drives the grinding wheel 30. It is also possible to drive the grinding wheel indirectly with the aid of a V-belt (not shown). In this case, the shaft 31 carries a belt pulley on which the V-belt runs.
  • the tube tensioning device 22 consists of a guide tube 32 and two holding arms 33.
  • the inside diameter of the guide tube 32 corresponds to the outside diameter of the guide rod 18.
  • the guide tube 32 is pushed onto the guide rod 18. It is further away from the base plate 1 than the guide part 24 of the yoke 21.
  • a compression spring 34 is arranged between the guide part 24 of the yoke 21 and the guide tube 32 of the tube clamping device 22. It is also pushed onto the guide rod 18.
  • the two holding arms 33 protrude laterally from the guide tube 32.
  • Each holding arm 33 is divided into a rod-shaped inner section 35 and a fork-shaped outer section 36 (cf. FIGS. 4a and 4b).
  • the rod-shaped sections 35 of the two Holding arms 33 run at right angles to the longitudinal axis of the guide tube 32 and lie in one plane. They are adjustable in length. This can be achieved in that the rod-shaped section 35 of each holding arm 33 is composed of a tubular part 37 and a rod-shaped part 38.
  • the tubular part 37 is adjacent to the guide tube 32. Its inside diameter corresponds to the outside diameter of the rod-shaped part 38.
  • the rod-shaped part 38 is inserted into the tubular part 37 and can be displaced in its longitudinal direction. It can be locked in any longitudinal position with the aid of a locking screw or clamp (not shown).
  • the rod-shaped parts 38 of the two holding arms 33 can be connected to one another via a cross strut 39.
  • the fork-shaped section 36 adjoins the outer end of the rod-shaped parts 38.
  • the plastic pipe piece 42 to be fastened is positioned between the fork arms 40 and clamped with a steel band 43 per holding arm 33. So that plastic pipe pieces 42 with different diameters can be fixed, the angle between the fork arms 40 is smaller in an inner section than in an outer section.
  • each fork arm 40 has two fastening devices for the steel band 43.
  • a fastening device 44 lies at the outer end of the inner arm section. It is used when a small diameter plastic pipe piece 42 is to be fixed.
  • the other fastening device 44 lies at the outer end of the outer arm section. It is used when a plastic pipe piece 42 with a larger diameter is to be fixed.
  • the fastening devices 44 of a fork arm 40 of each holding arm 33 are designed as cable ties which fix the steel band 43 in a tensioned state.
  • the pushing device 23 consists of a push tube 45 and a drive.
  • the inside diameter of this push tube 45 corresponds to the diameter of the guide rod 18.
  • the push tube 45 is also pushed onto the guide rod 18.
  • E ⁇ is further away from the base plate 1 than the guide tube 32 of the tube clamping device 22 and the guide part 24 of the yoke 21.
  • a compression spring 46 is also arranged between the guide tube 32 and the push tube 45. It is pushed onto the guide rod 18.
  • On its outside the push tube 45 has a toothed rack 47 which runs parallel to its longitudinal axis.
  • a gear 48 of the drive engages in the toothed rack 47.
  • An angle piece 49 is attached to the lower end face of the guide rod 18, to which the toothed wheel 48 is rotatably attached.
  • Da ⁇ gear 48 can be driven with a hand crank or an electric motor (not shown).
  • e ⁇ When e ⁇ is rotated, the push tube 45 is displaced along the guide rod 18.
  • a measuring rod 50 is attached to the outer surface of the push tube 45.
  • This measuring rod 50 runs parallel to the longitudinal axis of the push tube 45 and protrudes beyond that end face of the push tube 45 which faces the base plate 1.
  • a guide plate 51 protrudes laterally from the guide tube 32 of the tube tensioning device 22. This guide plate 51 has a through hole through which the measuring rod 50 projects.
  • a measuring scale is attached to the measuring rod 50.
  • the thrust tube 45 If the thrust tube 45 is pushed in the direction of the base plate 1 by turning the toothed wheel 48, then it exerts a force on the compression spring 46 lying between the thrust tube 45 and the guide tube 32. The greater this force, the shorter this compression spring 46 and the smaller the distance between the push tube 45 and the guide tube 32. The reduction in distance is measured with the measuring rod 50. The measuring scale is so calibrated that the force corresponding to the respective distance can be read directly from it.
  • the guide plate 51 serves as a pointer.
  • the proposed welding device is used in the following manner:
  • the welding device is attached to the wall 52 from the recess in the wall in such a way that the pointed corner 6 of the fastening plate 1 faces the pipe stub 5 and the imaginary extension of the bisector of the fastening plate 1 running through the pointed corner 6 is as precise as possible runs through the middle of the Rohrstummel ⁇ 5. If there are deviations here, these can be adjusted the angular position of the rail 2 can be compensated. Furthermore, the distance between the mounting plate 1 and the pipe stub 5 must be less than about 30% of the length of the mounting plate 1.
  • the end face of the pipe stub 5 is ground off.
  • the yoke arm 25, which carries the grinding wheel 30, is pivoted into the recess.
  • the grinding wheel 30 is centered with respect to the pipe stub 5 by adjusting the angular length of the rail 2 and by moving the slide 10 on this rail 2.
  • the electric drill 41 is then put into operation.
  • the rotating grinding wheel 30 is pressed against the end face of the tube stub 5 by pressing the push tube 45 in the direction of the base plate 1 by rotating the gear 48.
  • the pressure is transmitted to the yoke 21 via the two compression springs 34, 46 and the guide tube 32 of the tube clamping device 22.
  • the thrust tube 45 is moved away from the base plate 1 again by turning the gear 48 and then the yoke 21 is pulled down, whereby the grinding wheel 30 is lifted from the end face of the tube stub 5. Subsequently, the drilling machine 41 is switched off and the yoke arm 25 with the grinding wheel 30 is pivoted out of the recess.
  • the actual welding of the plastic pipe section 42 to the pipe stub 5 takes place.
  • the yoke arm 25 that carries the heating plate 26 is pivoted into the recess and centered with respect to the pipe stub 5.
  • the continuing plastic tube piece 42 is then fixed in the tube tensioning device 22.
  • the plastic pipe section 42 is also centered with respect to the pipe stub 5 by changing the length of the holding arms 33 of the pipe clamping device 22 accordingly.
  • the pipe tensioning device 22 can be released and the base plate 1 can be removed from the ceiling 52.
  • the proposed welding device enables for the first time the production of good quality weld seams in the narrow spatial conditions of a recess in a wall, in the ceiling or in the floor of a room.
  • the working time required for welding two plastic pipes is considerably shorter when using the proposed welding device than when using manual welding devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un appareil de soudage prévu pour des cas où une des deux sections de tuyau en plastique à raccorder est en partie enchâssée dans le mur et par conséquent déjà fixée. Cet appareil de soudage ne comporte de ce fait qu'un dispositif de serrage des tuyaux (22) et est fixé à l'aide d'une plaque de base (1) sur la surface d'où la section de tuyau en plastique (5) enchâssée fait saillie. La plaque de base (1) porte un rail (2) pivotant sur lequel est fixé un coulisseau (10) de manière à coulisser. Une tige conductrice (18) est reliée au coulisseau (10) par l'intermédiaire d'un joint articulé rotatif et d'un joint articulé basculant (16). Un dispositif de serrage des tuyaux (22) est fixé sur cette tige conductrice (18) dans le sens longitudinal. La tige conductrice porte en outre une entretoise (21) qui est reliée en son milieu à la tige conductrice (18) de manière à coulisser et à tourner. Au niveau d'un bras (25), cette entretoise porte une plaque chauffante (26) et au niveau de l'autre bras, un disque abrasif (30) entraîné par moteur.
PCT/CH1996/000428 1996-12-04 1996-12-04 Appareil de soudage pour tuyaux en plastique WO1998024613A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CH1996/000428 WO1998024613A1 (fr) 1996-12-04 1996-12-04 Appareil de soudage pour tuyaux en plastique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1996/000428 WO1998024613A1 (fr) 1996-12-04 1996-12-04 Appareil de soudage pour tuyaux en plastique

Publications (1)

Publication Number Publication Date
WO1998024613A1 true WO1998024613A1 (fr) 1998-06-11

Family

ID=4550463

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1996/000428 WO1998024613A1 (fr) 1996-12-04 1996-12-04 Appareil de soudage pour tuyaux en plastique

Country Status (1)

Country Link
WO (1) WO1998024613A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000016967A1 (fr) * 1998-09-18 2000-03-30 M K M S R L Appareil pour souder des tubes
CN105150522A (zh) * 2015-09-11 2015-12-16 宁波市宇华电器有限公司 三通管接头热熔加工设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223166A1 (de) * 1972-05-12 1973-11-29 Alfred Dipl-Ing Ruehle Verfahren und anordnung zum einfuegen von ersatzstuecken in festverlegte thermoplastische rohrleitungen
US4779856A (en) * 1987-07-31 1988-10-25 Robert Beeler Teaching apparatus for determining proper measurements for connecting two pieces of pipe
EP0450424A1 (fr) * 1990-04-02 1991-10-09 Armin Dommer Appareil de soudage d'un tube en plastique dans une pièce en plastique
EP0526723A1 (fr) * 1991-07-03 1993-02-10 Hans Zürcher Dispositif pour séparer des tubes embrochés, par exemple des tuyaux d'échappement de véhicules

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223166A1 (de) * 1972-05-12 1973-11-29 Alfred Dipl-Ing Ruehle Verfahren und anordnung zum einfuegen von ersatzstuecken in festverlegte thermoplastische rohrleitungen
US4779856A (en) * 1987-07-31 1988-10-25 Robert Beeler Teaching apparatus for determining proper measurements for connecting two pieces of pipe
EP0450424A1 (fr) * 1990-04-02 1991-10-09 Armin Dommer Appareil de soudage d'un tube en plastique dans une pièce en plastique
EP0526723A1 (fr) * 1991-07-03 1993-02-10 Hans Zürcher Dispositif pour séparer des tubes embrochés, par exemple des tuyaux d'échappement de véhicules

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000016967A1 (fr) * 1998-09-18 2000-03-30 M K M S R L Appareil pour souder des tubes
CN105150522A (zh) * 2015-09-11 2015-12-16 宁波市宇华电器有限公司 三通管接头热熔加工设备

Similar Documents

Publication Publication Date Title
WO2014090737A2 (fr) Dispositif destiné au serrage et à l'alignement de pièces profilées creuses, à parois minces et sous forme de segments, et son utilisation
DE2949157A1 (de) Vorrichtung und verfahren zum herstellen von versteiften schiffskoerpersektionen
WO2013026573A2 (fr) Procédé et installation de réalisation d'un assemblage par joint bout à bout entre des corps symétriques en rotation
EP0824979B1 (fr) Procédé pour connecter des pièces ainsi que presse pour cet usage
EP0597215A1 (fr) Appareillage pour le sondage par étincelage bout-à-bout
WO2009127178A1 (fr) Dispositif et procédé de formage sans enlèvement de matière pour réaliser un profil extérieur dans une pièce
DE3102019C2 (de) Gegenstützvorrichtung für das Stumpfverschweißen von zwei Rohren
DE10392402T5 (de) Umlaufende, mit Rollen versehene Rillenbildungseinrichtung für ein Rohr
WO1998024613A1 (fr) Appareil de soudage pour tuyaux en plastique
DE3733990A1 (de) Aufweitwerkzeug fuer enden von duennwandigen blechrohren
EP0015931A1 (fr) Procede et dispositif pour le vissage de manchons tubulaires
CH695261A5 (de) Schweissgeraet fuer Kunststoffrohre.
DE102009058985B3 (de) Unterbodenspanner zum Zentrieren und Spannen von Werkstücken, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
DE3216232C2 (de) Verankerung für einen metallischen Sockel
WO2016142162A1 (fr) Procédé et dispositif de revêtement pour appliquer une couche de recouvrement lors de la fabrication d'un tube de grand diamètre multicouche
DE60109855T2 (de) Holzfass, Verfahren zu seiner Herstellung sowie Vorrichtung zur Durchführung eines solchen Verfahrens
DE102016005783A1 (de) Bearbeitungsvorrichtung für Rohrenden
DE4337751C1 (de) Stumpfschweißmaschine für Kunststoffrohre
DE3412494C1 (de) Rohreinschweißvorrichtung
DE19745063C1 (de) Vorrichtung zur Abwinklung eines Betonstahlstabes
DE102005045412B4 (de) Rohrverlegegerät
CA2386340C (fr) Machine de soudage au gaz par pression mobile
EP3492225A1 (fr) Dispositif de pose de points de fixation
CN219767260U (zh) 一种钢结构施工辅助装置
DE4016414C1 (en) Appts. for prodn. of large plastic container(s) with planar walls - includes transport rail for weld extruder, carriage running parallel to weld, and adjustable carrier on carriage etc.

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase