EP3993990A1 - Düsenvorrichtung und heissgasschweissanlage - Google Patents
Düsenvorrichtung und heissgasschweissanlageInfo
- Publication number
- EP3993990A1 EP3993990A1 EP20735320.2A EP20735320A EP3993990A1 EP 3993990 A1 EP3993990 A1 EP 3993990A1 EP 20735320 A EP20735320 A EP 20735320A EP 3993990 A1 EP3993990 A1 EP 3993990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply line
- gas
- gas supply
- nozzle device
- porous structure
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 239000000654 additive Substances 0.000 claims description 20
- 230000000996 additive effect Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000004023 plastic welding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 5
- 239000004753 textile Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000006262 metallic foam Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims 1
- 239000006260 foam Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011800 void material 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
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
-
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
-
- 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
- B29C66/01—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
-
- 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
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- 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
- B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
-
- 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
- B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
- B29C66/322—Providing cavities in the joined article to collect the burr
-
- 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
- B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
-
- 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
- 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
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular 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
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8167—Quick change joining tools or surfaces
-
- 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
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8124—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the structure of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/81241—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the structure of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps being porous or sintered
Definitions
- the invention relates to a nozzle device, in particular for hot gas welding Shen.
- the invention also relates to a hot gas welding system, in particular for hot gas welding of plastic workpieces.
- Hot gas is used for welding workpieces, especially plastic workpieces.
- the workpieces to be welded are heated by means of hot gas and then joined or merged.
- nozzle devices which have a large number of small tubes for supplying hot gas to the welding areas of a workpiece.
- the arrangement or he stretching of the tubes can be adapted or selected with regard to the geometry of the workpieces to be welded.
- the present invention is based on the task of specifying a nozzle device through which a precise or uniform supply of hot gas to welding areas of to be welded workpieces is made possible.
- the task was also to specify a nozzle device that can be adapted to complex workpiece geometries with greater accuracy.
- the task consisted in specifying a hot gas welding system that can be operated flexibly or that enables weld seams to be produced with increased accuracy.
- a nozzle device according to the invention is particularly suitable for hot gas welding, particularly preferably for hot gas welding of plastic work pieces.
- a nozzle device according to the invention has at least one gas supply line for supplying a gas flow to a workpiece to be welded and a porous structure for equalizing a gas flow passing through the gas supply line and / or exiting the gas supply line.
- the welding areas of the workpieces to be welded can be heated particularly evenly with only little construction or equipment effort. In particular, only selective heating can be avoided in this way. Welding results of improved quality can thus be achieved.
- cavities or cavity structures can be designed as pores or cavities, for example.
- cavities or Cavity structures can be designed as irregularly arranged and / or irregularly formed through channels.
- cavities, pores or cavities or passages can be very small openings, cavities and / or gas-permeable channel structures.
- the porosity can be understood to mean the ratio of the cavity volume relative to the total solid body volume or relative to the volume of the respective solid body section.
- the porosity can thus denote a measure of the volume of the void space within a solid body or a structure.
- a porous structure can also be understood to mean a porous solid-state structure. Such a solid structure can be rigid or flexibly deformable.
- a porous structure can ensure a relatively high degree of gas permeability, while at the same time a suitable gas distribution arises due to the slowing down and / or due to turbulence. Finally, by arranging a porous structure, there is the possibility of specifically setting or influencing the permeability and / or equalization of the gas flow.
- a porous structure can produce particularly homogeneous weld seams that meet high mechanical stability requirements and also high optical requirements.
- finer or more precise weld seams in particular with regard to the width of the weld seam, can be achieved.
- a porous structure enables shorter welding times due to more uniform heating of the welding areas.
- the porous structure can be arranged and / or formed at least in sections in and / or on the gas supply line.
- porous struc ture By arranging or designing the porous struc ture in the gas supply line, a comparison of the gas flow can already be achieved within the gas supply line, whereby the risk of uneven gas leakage from the gas supply line can be reduced.
- An arrangement or formation of the porous structure on the gas supply line can reduce the structural effort or increase the flexibility in the gas supply to the workpieces to be welded.
- the gas supply line can be produced at least in sections and / or partially by means of additive manufacturing.
- wall sections delimiting the gas supply line and / or nozzle components can be produced at least in sections and / or partially by means of additive manufacturing.
- the gas supply line or the wall sections and / or nozzle components which limit the gas supply line can be adapted particularly precisely to workpieces to be welded by means of additive manufacturing. As a result, hot gas flows can be guided very precisely to the respective welding areas, whereby further improved welding results can be achieved.
- the porous structure can be produced by means of additive manufacturing and / or by means of sintering.
- additive manufacturing particularly complex shapes can be created with little effort.
- Sintering enables the production of a porous structure at low cost.
- Some additive manufacturing processes can include sintering as a process step.
- the porous structure can also be designed in the form of a foam.
- the porous structure can in particular be metal foam and / or ceramic foam. Such foam structures can behave in a large volume with little effort and thereby achieve a particularly good uniformity.
- the porous structure can also be formed by fine-meshed net structures, steel wool, felt and / or textile materials. For example, several net layers, textile layers or felt layers can form a porous structure to even out a gas flow.
- a porous structure designed in this way can be provided inexpensively and at the same time ensures sufficient functionality for equalizing a gas flow.
- the porous structure can be produced together with the gas supply line.
- wall sections delimiting the gas supply line and / or nozzle components can be produced together with the porous structure, particularly preferably by means of additive manufacturing. Particularly complex geometries can be created through this.
- subsequent joining or assembly of the porous structure with the adjoining nozzle components or wall sections can be avoided in this way.
- the porous structure can be produced separately from the gas supply line and / or the wall sections and / or nozzle components delimiting the gas supply line.
- the porous structure can be inserted into the gas supply line afterwards.
- the wall sections and / or nozzle components delimiting the gas supply line can be made of a different material than the porous structure.
- the gas feed line can be designed in the form of a slot. Such a slot-shaped design of the gas supply line enables a particularly uniform supply of hot gas to the welding areas of the respective workpieces.
- a porous structure in and / or on a slot-shaped gas feed line allows a particularly high degree of equalization of the respective gas flow.
- the gas feed line particularly preferably has a slot-shaped and / or a slot-shaped circumferential outlet.
- a slot-shaped circumferential outlet can be designed completely or partially circumferentially.
- a slot-shaped outlet can thus be formed in the circumferential direction, that is to say transversely to a gas outflow direction, with or without ends.
- a particularly uniform gas flow can be directed through a slot-shaped outlet onto welding areas of a workpiece to be welded. The respective weld areas can be heated without interruption by a circumferential formation of a slot-shaped outlet.
- the gas supply line and / or the outlet of the gas supply line can have a geometry that is adapted to a workpiece to be welded.
- a particularly close-to-contour design of the nozzle device or the outlet of the gas supply line can thus be implemented. In this way, the respective gas flow can be applied particularly precisely to the welding areas of the workpieces and thus also along the
- Particularly uniform heating can be realized in welding areas.
- the gas feed line can be designed to feed a gas flow onto a circumferential outer circumferential surface or a circumferential inner circumferential surface of a workpiece to be welded.
- a configuration of the nozzle device allows in particular the creation of coaxial overlap welded connections or tube-in-tube welds. In this way, workpieces in particular can be heated all around along their welding areas and then guided coaxially into one another. A suitable welded joint can thus be created along an overlapping area.
- Such a coaxial lap weld connection is particularly suitable for the welding of tubular components.
- the gas supply line has an outlet running all around along an outer circumference and / or an outlet of the gas supply line is directed radially outward at least in sections.
- Such a structural design of the gas supply line or the outlet of the gas supply line can particularly advantageously heat an inner circumferential section of a workpiece to be welded that runs all around. An inner circumferential section heated in this way can be welded to an outer circumferential section of a corresponding workpiece.
- the gas supply line has an outlet running all around along an inner circumference and / or an outlet of the gas supply line is directed radially inward at least in sections.
- Such a structural design of the gas supply line or the outlet of the gas supply line can particularly advantageously heat an all-round outer circumferential section of a workpiece to be welded. An outer circumferential section heated in this way can be welded to an inner circumferential section of a corresponding workpiece.
- the gas supply line can be defined and / or limited by at least two nozzle components.
- Such nozzle components can, for example, limit an annular or channel-shaped gas supply line.
- the porous structure can be arranged and / or enclosed at least in sections between two nozzle components.
- a porous structure produced separately from the nozzle components defining the gas supply line can be arranged in the gas supply line with only little effort.
- the overall assembly of the nozzle device can hereby be simplified and implemented with only low costs.
- the porous structure forms and / or delimits an outlet for the gas supply line.
- the porous structure can further preferably extend up to an outlet of the gas supply line and / or protrude from the outlet of the gas supply line.
- the porous structure can be used to influence the flow behavior of the hot gas stream during and / or after it exits the outlet of the gas supply line. The heating of the welding areas of workpieces to be welded can thus be carried out in an even more targeted manner.
- a gas suction line can be provided for suctioning a gas flow from a workpiece to be welded. Accordingly, a stream of hot gas can be directed onto the workpiece to be welded through the gas supply line. After the hot gas flow has passed and heated the respective welding area of the workpiece, it can be sucked up again via the gas suction line. Undesired heating of workpiece sections adjacent to the weld area can thus be avoided. Likewise, undesired heating of components of a workpiece to be welded can be avoided here, in particular electronic components (MID- Molded Interconnect Devices) which are arranged on and / or in a workpiece to be welded. Mechanical and / or optical and / or thermal impairments and / or damage to the workpieces to be welded or components of such workpieces outside the respective welding area can hereby be prevented.
- MID- Molded Interconnect Devices MID- Molded Interconnect Devices
- the gas suction line can run at least in sections parallel to the gas supply line. This ensures a particularly uniform suction of hot gas. Furthermore, an inlet of the gas suction line can be slit-shaped and / or slit-shaped circumferentially. The gas suction line can thus run in a manner corresponding to the gas supply line.
- the slot-shaped configuration can also be implemented with little effort, in particular through a defined arrangement of two corresponding nozzle components.
- the gas suction line and / or the inlet of the gas suction line has a geometry that is adapted to a workpiece to be welded.
- a defined supply of hot gas to a welding area of a workpiece an equally defined or precise suction of the hot gas flow can be ensured.
- the heat input into the respective workpiece can thus be made more precise or limited locally, whereby the welding result can be further improved.
- Another independent aspect of the present invention relates to a nozzle device, preferably according to the above description, with a gas supply line for supplying a gas flow to a workpiece to be welded and with a gas suction line for suctioning a gas flow from a workpiece to be welded.
- a stream of hot gas can be directed through the gas supply line to the workpiece to be welded and then Since the hot gas flow has passed and heated the respective welding area of the workpiece, it can be extracted again via the gas extraction line. In this way, undesired heating of workpiece sections adjoining the welding area can be avoided.
- Yet another independent aspect of the present invention relates to a nozzle device, preferably according to the above description, with a gas supply line for supplying a gas flow to a workpiece to be welded, the gas supply line being at least partially and / or partially produced by means of additive manufacturing.
- wall sections and / or nozzle components bordering the gas supply line can be produced at least in sections and / or partially by means of additive manufacturing. This enables a high degree of flexibility in shaping to be achieved.
- the gas supply line or wall sections and / or nozzle components delimiting the gas supply line can be adapted particularly precisely to workpieces to be welded or manufactured accordingly by means of additive manufacturing. Hot gas streams can be guided very precisely to the respective welding areas, whereby further improved welding results can be achieved.
- Yet another independent aspect of the present invention relates to a nozzle device, preferably according to the above description, with a gas feed line for feeding a gas flow onto a circumferential outer peripheral surface or a circumferential inner peripheral surface of a workpiece to be welded.
- a gas feed line for feeding a gas flow onto a circumferential outer peripheral surface or a circumferential inner peripheral surface of a workpiece to be welded.
- Such a nozzle device allows the production of coaxial overlap weld connections or tube-in-tube welds. In this way, workpieces in particular can be heated all around along their welding areas and then guided coaxially into one another. In this way, a suitable welding connection can be produced along an overlapping area.
- Yet another independent aspect of the present invention relates to a hot gas welding system, in particular for hot gas welding of plastic workpieces, with a nozzle device described above and with a heat exchanger for heating a gas flow to be conducted into the nozzle device.
- a hot gas welding system With such a hot gas welding system, the welding areas of workpieces to be welded can be heated especially evenly with little effort. High quality welding results can thus be achieved.
- Yet another independent aspect of the present invention relates to a hot gas welding system, in particular for hot gas welding of plastic workpieces, with a nozzle device, preferably according to the description above, and with a modularly expandable and / or modularly assembled heat exchanger for heating a nozzle device direct the gas flow.
- the hot gas welding system can be adapted to different operating conditions with little effort.
- a modular expansion can be made and the hot gas welding system can be used for more power-intensive welding tasks. The complete exchange of the heat exchanger can thus be avoided.
- Yet another independent aspect of the present invention relates to a hot gas welding system, in particular for hot gas welding of plastic workpieces, with a nozzle device, preferably according to the description above, and with a heat exchanger for heating a gas flow to be conducted into the nozzle device, the heat exchanger being a Has a plurality of heat exchanger modules that can be switched on and / or off.
- Such heat exchanger modules can be used to reconfigure the hot gas welding system with little effort in view of changed operating conditions.
- the preferred embodiments described above with regard to the nozzle device also apply in the same way to the other independent aspects of the nozzle device and also to the independent aspects of the hot gas welding system.
- Fig. 1 is a perspective view of a hot gas welding line according to an embodiment of the present invention
- FIG. 2 shows a detailed view A of the hot gas welding system from FIG. 1 with a nozzle device according to an embodiment of the present invention
- FIG. 3 shows a plan view of a hot gas welding system according to a
- FIG. 4 shows a sectional illustration of the hot gas welding system from FIG.
- FIG. 5 shows a detailed view B of the hot gas welding system from FIG. 4 in
- FIG. 6 shows an exploded view of a nozzle device according to an embodiment of the present invention
- FIG. 7 shows a sectional illustration of the nozzle device from FIG. 6, 8 is a perspective view of a nozzle device according to a further embodiment of the present invention
- FIG. 9 shows an exploded view of the nozzle device from FIG. 8,
- FIG. 10 shows a plan view of the nozzle device from FIG. 8,
- FIG. 11 shows a sectional view along the line AA from FIG. 10,
- FIG. 12 shows a detailed view C from FIG. 11, 13 shows a detailed view D of FIG. 11,
- FIG. 14 shows a view of two workpieces for a tube-in-tube
- Fig. 15 is a sectional view along the line E-E of Fig. 14,
- FIG. 16 shows a detailed view E of FIG. 15 with a nozzle device according to a further embodiment of the present invention
- 17 shows a detailed view F of FIG. 15 with a nozzle device according to yet another embodiment of the present invention
- 18 is a view of two workpieces connected to one another by means of a tube-in-tube weld
- FIG. 20 shows a perspective illustration of a modular heat exchanger according to an embodiment of the present invention
- FIG. 21 shows a sectional illustration of the heat exchanger from FIG. 20.
- FIG. 1 shows a perspective view of a Fl Strukturgasssch bulkanlange 10 according to an embodiment of the present invention and FIG. 2 shows a detailed view A of the Fl constitutiongasssch obtainan 10 of Fig. 1.
- the Fl constitutiongassch bulkan location 10 is particularly designed for the industrial gas welding of plastic workpieces.
- the industrial gas welding system 10 has two nozzle devices 12 through which the industrial gas can be directed onto workpieces 14 to be welded, which will be described in detail below.
- the industrial gas welding system 10 furthermore has a heat exchanger 16 which is designed to heat gas flows to be conducted into the nozzle devices 12.
- the heat exchanger 16 can in particular be designed to be modularly expandable and / or modularly composed, which will also be discussed in detail below.
- the nozzle devices 12 are arranged on a flow device 18. Through the flow device 18, the nozzle devices 12 can be moved between the workpieces 14 to be welded and after the respective welding areas of the workpieces 14 have been heated, they can be moved away from them again.
- the hot gas welding system 10 also has two workpiece receptacles 20 through which the workpieces 14 to be welded can be received.
- the workpiece receptacles 20 can also be referred to as a receiving tool and, in particular, can be adapted to the external geometry of the workpieces 14 to be welded in order to enable safe positioning or handling of the workpieces 14.
- the workpiece holders 20 can each be arranged on a tool slide 22.
- the workpiece holders 20 and thus also the workpieces 14 to be welded can be moved towards the nozzle devices 12 and away from them again. After the welding areas of the workpieces 14 have been heated, they can be moved toward one another by means of the tool slide in order to compress the heated welding areas. The welding process can be completed by pressing the heated welding areas of the workpieces 14 together.
- FIG. 3 shows a plan view of a hot gas welding system 10 according to an embodiment of the present invention.
- Fig. 4 is a sectional view of the hot gas welding system 10 of Fig. 3 along the line C-C and in Fig. 5 shows a detailed view B of the hot gas welding system of Fig. 3 in a sectional view ge.
- the hot gas welding system 10 according to FIGS. 3 to 5 can be the same embodiment as in FIGS. 1 and 2.
- the nozzle devices 12 are arranged between the workpieces 14 to be welded.
- the workpieces 14 are in turn arranged in the workpiece receptacles 20.
- the nozzle devices 12 are attached to the lifting device 18 via the pressure chamber housing 24.
- the pressure chamber housings 24 each delimit a supply air chamber 26 via which the hot gas is directed to the nozzle devices 12.
- the nozzle devices 12 can be moved between the workpieces 14 via the lifting device 18, as described above. Details of the nozzle devices 12 can be found in FIG. 5, which shows the detail section B from FIG.
- Each nozzle device 12 has a gas supply line 28 for supplying a gas flow to a workpiece 14 to be welded.
- the industrial gas flows through the outlets 29 of the gas supply lines 28 out of these onto the welding areas of the workpieces 14.
- the nozzle devices 12 are each equipped with a porous structure 30 for equalizing a gas flow passing through the gas feed line 28 and / or exiting the gas feed line 28.
- the porous structure 30 can for example be arranged and / or formed within the gas feed line 28.
- the porous structure 30 can also be produced by means of additive manufacturing and / or by means of sintering.
- the porous structure can also be formed by what is known as a sintered silencer or it can be produced in accordance with such a sintered silencer.
- the porous structure 30 can also be designed in the form of a foam.
- the porous structure 30 can, for example, be metal foam and / or ceramic foam.
- the porous structure 30 can also be formed by fine-meshed net structures, steel wool, felt and / or textile materials. For example, several mesh layers, textile layers or felt layers can form a porous structure 30 for equalizing a gas flow.
- the porous structure 30 can be produced together with the gas supply line 28.
- the gas supply line 28 delimiting Wandab sections 32 can be produced together with the porous structure 30, particularly preferably by means of additive manufacturing. Particularly complex geometries can be created on this.
- a particularly uniform gas flow can be directed to the welding areas of the workpieces 14 to be welded. so that a particularly uniform heating and consequently a high welding quality can be achieved.
- FIG. 6 shows an exploded view of a nozzle device 12 according to an exemplary embodiment of the present invention
- FIG. 7 shows a sectional view of the nozzle device 12 from FIG. 6.
- the nozzle device 12 in FIGS. 6 and 7 can be the same embodiment from FIG Düsenvor device 12 as shown in Figs. 3 to 5 act.
- the nozzle device 12 has a nozzle component 34 on the pressure chamber side and a nozzle component 36 on the outlet side.
- the nozzle components 34 and 36 define the gas supply line 28 and the outlet 29 of the gas supply line 28.
- nozzle components 34 and 36 have wall sections 32 through which the gas supply line 28 is limited.
- the porous structure 30 is arranged between the nozzle components 34 and 36 or framed by the nozzle components 34 and 36.
- the porous structure is arranged within the gas supply line 28 and can ensure an equalization of the hot gas flow within the gas supply line 28 and also after it exits the outlet 29.
- they can each have a bore hole 38 through which the fixing means can be introduced or passed.
- FIG. 8 shows a perspective view of a nozzle device 12 according to a further embodiment of the present invention and in FIG. 9 an exploded view of the nozzle device 12 from FIG. 8 is shown.
- FIG. 10 shows a plan view of the nozzle device 12 from FIG. 8 and
- FIG. 11 shows a sectional illustration along the line AA of FIG. 10.
- FIG. 12 shows a detailed view C of FIG. 11 and
- FIG. 13 shows a detailed view D of FIG 11.
- the nozzle device 12 according to FIGS. 8 to 13 differs from the nozzle device according to FIGS. 6 and 7, in particular with regard to the shape or the geometry of the outlet 29 of the gas supply line 28.
- the outlet 29 according to FIG. 8 extends over different exit planes.
- the gas feed line 28 or the outlet 29 in particular has a free-form geometry, which can be implemented particularly preferably through the use of additive manufacturing processes.
- the outlet 29 can thus be guided particularly close to the contour to the welding areas of workpieces 14 to be welded. This ensures particularly uniform heating.
- outlet 29 of the gas supply line 28 runs all around, in particular runs completely all around.
- the welding areas of the workpiece 14 can thus be heated without interruption.
- the nozzle device 12 has a nozzle component 34 on the pressure chamber side and a nozzle component 36 on the outlet side.
- the gas feed line 28, in which the porous structure 30 is also arranged, is limited by the nozzle components 34 and 36.
- the pressure chamber component 34 is attached to the pressure chamber housing 24.
- the nozzle device 12 according to FIGS. 8 to 13 also ensures a suction functionality for industrial gas, which will be discussed in more detail below.
- the nozzle device 12 according to FIGS. 8 to 13 has a nozzle component 40 at the end.
- a gas suction line 42 is formed between the end nozzle component 40 and the outlet nozzle component, which can be seen in particular from the detailed views in FIGS. 12 and 13 can.
- a gas stream 44 is passed through the gas supply line 28 to a welding area of a workpiece 14 and then extracted again via the gas suction line 42. In this way, undesired heating of material sections of the workpieces 14 adjoining the weld area can be avoided.
- the workpiece can have material thicknesses X and Y which differ from one another along different areas.
- the dimension of the gas supply line 28 or the outlet 29 of the gas supply line 28 can be adapted to these different material thicknesses X and Y, so that uniform heating is ensured.
- Fig. 14 shows a view of two workpieces 14 for a tube-in-tube welding Ver and associated nozzle devices 12 according to further Ausense approximately examples of the present invention.
- 15 shows a sectional representation along the line EE of FIG. 14.
- FIG. 16 shows the detailed view E of FIG. 15 with a nozzle device 12 according to a further embodiment of the present invention
- FIG. 17 shows the detailed view F of Fig. 15 with a nozzle device 12 according to yet another embodiment of the present invention.
- the nozzle device 12 according to FIG. 16 likewise has a nozzle component 34 on the pressure chamber side and a nozzle component 36 on the outlet side.
- the gas feed line 28, in which the porous structure 30 is also arranged, is limited by the nozzle components 34 and 36.
- the gas feed line 28 according to FIG. 16 can have an outlet 29 running all around along an outer circumference 48 or the outlet 29 of the gas feed line 28 can be directed radially outward at least in sections.
- the porous structure 30 is annular, but the inside 50 of the porous structure 30 tapers conically. This conical or beveled design of the inner side 50 enables a further improved equalization of the gas flow 44 to be guaranteed.
- the nozzle device 12 according to FIG. 17 likewise has a nozzle component 34 on the pressure chamber side and a nozzle component 36 on the outlet side.
- the gas feed line 28, in which the porous structure 30 is arranged, is limited by the nozzle components 34 and 36.
- the gas feed line 28 according to FIG. 17 is designed to feed a gas flow onto a circumferential outer circumferential surface 52 of a workpiece 14 to be welded.
- the gas supply line 28 according to FIG. 17 can have an outlet 29 running all around along an inner circumference 54 or the outlet 29 of the gas supply line 28 can be directed radially inward at least in sections.
- the porous structure 30 is of annular design, but the inside 56 of the porous structure 30 tapers conically. This conical or beveled design of the inner side 56 enables a further improved equalization of the gas flow 44 to be ensured.
- FIG. 19 shows the detailed view G from FIG. 18.
- the welding of the workpieces 14 according to FIGS. 18 and 19 is only along the inner and outer circumferential surfaces 46 and 52 of the workpieces 14 he follows. End-side welding of the workpieces 14 can be avoided in this way.
- FIG. 20 shows a perspective illustration of a modular heat exchanger 16 according to an embodiment of the present invention and in FIG.
- the heat exchanger 16 has a plurality of heat exchanger modules 58, which can each be arranged on a module holder 60.
- the heat exchanger 16 can be modularly expandable or assembled by individual or multiple heat exchanger modules 58.
- the heat exchanger modules 58 can be flexibly switched on and off, depending on the conditions of use, in order to change the heating power.
- the heat exchanger 16 can furthermore be equipped with a supply connection 62 and an acceptance connection 64.
- the sectional illustration in FIG. 21 finally shows that each heat exchanger module 58 has a plurality of heat exchanger plates 66, by means of which a gas flow can be heated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019117868.1A DE102019117868B4 (de) | 2019-07-02 | 2019-07-02 | Düsenvorrichtung und Heißgasschweißanlage |
PCT/EP2020/067955 WO2021001269A1 (de) | 2019-07-02 | 2020-06-25 | Düsenvorrichtung und heissgasschweissanlage |
Publications (1)
Publication Number | Publication Date |
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EP3993990A1 true EP3993990A1 (de) | 2022-05-11 |
Family
ID=71401744
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Application Number | Title | Priority Date | Filing Date |
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EP20735320.2A Pending EP3993990A1 (de) | 2019-07-02 | 2020-06-25 | Düsenvorrichtung und heissgasschweissanlage |
Country Status (3)
Country | Link |
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EP (1) | EP3993990A1 (de) |
DE (1) | DE102019117868B4 (de) |
WO (1) | WO2021001269A1 (de) |
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DE202021105447U1 (de) | 2021-10-08 | 2023-01-10 | Kvt Bielefeld Gmbh | Gaserhitzer |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US3311525A (en) * | 1963-10-02 | 1967-03-28 | Union Carbide Corp | Heat sealing apparatus including a porous member and fluid pressure |
US3488244A (en) * | 1965-01-21 | 1970-01-06 | Albemarle Paper Mfg Co | Heat sealing apparatus |
DE1914122A1 (de) * | 1969-03-20 | 1970-10-01 | Selig Dipl Ing Hans Joachim | Schweissverfahren fuer thermoplastische Kunststoffe |
GB1309941A (en) * | 1970-01-07 | 1973-03-14 | Mardon Son Hall Ltd | Method and apparatus for sealing cartons |
EP0044206A3 (de) * | 1980-07-10 | 1984-05-02 | Nordson Corporation | Schweissverfahren und -vorrichtung |
US5222649A (en) * | 1991-09-23 | 1993-06-29 | International Business Machines | Apparatus for soldering a semiconductor device to a circuitized substrate |
DE10019300B4 (de) | 2000-04-19 | 2006-07-27 | Kvt Bielefeld Gmbh | Verfahren zum Schweißen von Kunsttoffteilen |
-
2019
- 2019-07-02 DE DE102019117868.1A patent/DE102019117868B4/de active Active
-
2020
- 2020-06-25 WO PCT/EP2020/067955 patent/WO2021001269A1/de unknown
- 2020-06-25 EP EP20735320.2A patent/EP3993990A1/de active Pending
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WO2021001269A1 (de) | 2021-01-07 |
DE102019117868A1 (de) | 2021-01-07 |
DE102019117868B4 (de) | 2022-02-03 |
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