EP2177662A1 - Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants - Google Patents

Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants Download PDF

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Publication number
EP2177662A1
EP2177662A1 EP08018159A EP08018159A EP2177662A1 EP 2177662 A1 EP2177662 A1 EP 2177662A1 EP 08018159 A EP08018159 A EP 08018159A EP 08018159 A EP08018159 A EP 08018159A EP 2177662 A1 EP2177662 A1 EP 2177662A1
Authority
EP
European Patent Office
Prior art keywords
cutting
air
compressed air
air jet
supersonic
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.)
Granted
Application number
EP08018159A
Other languages
German (de)
English (en)
Other versions
EP2177662B1 (fr
Inventor
Hannes Auer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3CON Anlagenbau GmbH
Original Assignee
3CON Anlagenbau GmbH
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 3CON Anlagenbau GmbH filed Critical 3CON Anlagenbau GmbH
Priority to PL08018159T priority Critical patent/PL2177662T3/pl
Priority to AT08018159T priority patent/ATE494418T1/de
Priority to DE502008002238T priority patent/DE502008002238D1/de
Priority to EP08018159A priority patent/EP2177662B1/fr
Publication of EP2177662A1 publication Critical patent/EP2177662A1/fr
Application granted granted Critical
Publication of EP2177662B1 publication Critical patent/EP2177662B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/22—Severing by heat or by chemical agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/06—Severing by using heat
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically

Definitions

  • the invention relates to a method and a device for cutting knitted or woven goods as well as knitted or woven fabric-containing composite materials, in particular of reference materials of a Interie uses for a motor vehicle, according to the preamble of claim 1 and 6.
  • the object of the invention is to provide a method for cutting knitted or woven goods as well as knitted or woven fabric having composite materials, which is as simple, fast, clean, environmentally friendly and low maintenance, operating and purchase costs. Furthermore, a simple and inexpensive device for carrying out this method is to be created.
  • a supersonic speed accelerated hot air jet is used to cut the knit or woven fabric as well as knit or woven fabric composite materials.
  • the product to be cut is pinpoint separated by a hot air jet, which has a high kinetic energy due to its supersonic speed (v> 343m / s).
  • This high kinetic energy means that already a much lower air jet temperature for cutting the goods is sufficient in comparison to methods in which the speed of the air jet is below the sound limit.
  • goods with melting points> 1000 ° Celsius such as fiberglass or carbon fiber-containing nonwovens, can be cut with air jet temperatures that are below 1000 ° C.
  • very clean cutting lines can be created.
  • the cutting speeds are up to 500 mm / s.
  • a particular advantage is further that the method according to the invention is inexpensive to purchase and in operation and easy to use. Furthermore, no expensive and complicated devices are necessary. With the method according to the invention, a variety of knitted and woven fabrics of thermoplastic or thermosetting materials and their composite with nonwovens, glass fiber mats, etc. can be cut, even those whose melting points above 1000 ° C. lie.
  • a collimated supersonic air jet having a temperature of at least 400 ° C, preferably of at least 600 ° C and more preferably of at least 800 ° C is used.
  • the supersonic air jet is bundled in such a way that it hits the material to be cut punctiform at least 10 mm after the nozzle exit.
  • the air jet is heated within a hot air cartridge by at least 780 ° C, wherein the expansion of the air caused by this heating is used to accelerate the air jet. It has been found that such heating is particularly advantageous in order to accelerate the air flow due to the thermal expansion of the air caused thereby to the desired supersonic speed.
  • the hot supersonic air jet is used for cutting knitted or woven cover fabrics for automotive interior trim parts.
  • the hot supersonic air jet is used for cutting composite materials which, in addition to the knitted or woven goods, also comprise glass fiber mats, glass or carbon fiber-containing nonwovens or foams.
  • Particularly advantageous is the method for cutting protruding edges laminated knitted or woven fabric, fiberglass-containing woven goods or use their composite.
  • the cutting nozzle is formed as a supersonic smooth jet nozzle with an air duct whose length is 30-50 times, in particular 40 times its bore diameter.
  • Supersonic smooth jet nozzle means that, on the one hand, the flow velocity of the air flow in the nozzle is higher than the speed of sound and, on the other hand, although there may be turbulent flow within the nozzle, the fluid flow after exiting the nozzle to the point of impingement on the product to be cut strongly bundled form exists.
  • the inventive ratio between the length and diameter of the air duct allows this bundling in a simple manner.
  • an antechamber is arranged between the heating cartridge and the cutting nozzle, from which the compressed air channel is supplied with heated compressed air.
  • Such an antechamber easily prevents heat accumulation of the heated air directly behind the heating cartridge and allows for a strong expansion of the air before it enters the supersonic jet nozzle, thereby significantly increasing the velocity of the air.
  • FIGURE shows a longitudinal section through the device according to the invention.
  • hot air cutting device has an elongated, tubular housing 5, which is flange-mounted by means of a flange 20 and screws 21 to a holder 4 airtight.
  • the seal is created via a high temperature seal 14.
  • the holder 4 is used to attach the device to a guide and holding device, not shown, for example, to a robot.
  • a ceramic, tubular heating cartridge 6 is arranged within the housing 5. Between the heating element 6 and the housing 5 is a temperature-resistant heat film 7, which compensates for the different dimensions of the ceramic heating element 6 and the housing 5 during heating, so that the heating element 6 in the radial direction always has a tight fit.
  • the holder 4 has transversely to its longitudinal extent a continuous, stepped in the diameter cavity 22 into which the housing 5 of the heating element 6 protrudes from below.
  • the cavity 22 is closed by a closure lid 3 and sealed airtight by means of a flat gasket 10.
  • a spring 11 is supported in the form of a compression coil spring, which abuts with its other end to a pressure piece 12 and biasing it downwards.
  • the pressure piece 12 extends into the upper end region of the housing 5 and presses with its opposite end on the heating element 6, whereby it is fixed in the axial direction within the housing 5.
  • the flameproof ceramic heating element 6 has several continuous longitudinal channels 23 for the passage of compressed air, wherein in the individual longitudinal channels 23, a heating device in the form of over the entire length of the longitudinal channels 23 extending, electrically heatable, pressure-resistant heating coils 19 is arranged for heating the passed compressed air.
  • the longitudinal channels 23 are connected via channels, not shown in the pressure piece 12 and via the cavity 22 and another, not shown, provided in the closure cap 3 passage with a compressed air connection 2 in flow communication.
  • Compressed air which preferably has a pressure of 5-10 bar, in particular 6-8 bar, can thus be passed through the longitudinal channels 23 via the compressed air connection 2, which is arranged on the closure lid 3, and there to a specific temperature, for example 500 ° -1000 ° C, in particular 750 ° -850 ° C, are heated.
  • a specific temperature for example 500 ° -1000 ° C, in particular 750 ° -850 ° C, are heated.
  • the temperatures depend strongly on the material to be cut and can vary widely, and they may also be outside the above-mentioned temperature ranges.
  • the number of longitudinal channels 23 may also vary widely.
  • thermocouple probe extends through the entire length of the heating element 6 through and is at its upper end with an electric Line 13 is connected, which is electrically coupled to an electrical connection 1.
  • the electrical connection 1 is located on the closure lid 3.
  • the temperature sensor 8 is used to measure the temperature of the heated compressed air and protrudes for this purpose down over the heating element 6 also into an antechamber 16, which is located in a lower end portion of the housing 5.
  • This pre-chamber 16 open all longitudinal channels 23.
  • the pre-chamber 16 has the main purpose of preventing heat accumulation directly behind the heating element 6 and the heated air from all the longitudinal channels 23 together. Furthermore, results from the pre-chamber 16 that a arranged at the lower end of the housing 5 cutting nozzle 9 has a certain distance from the heating coils 19, so that overheating of the cutting nozzle 9 can be avoided.
  • the cutting nozzle 9 is screwed into the lower end of the housing 5 and limits the pre-chamber 16 down.
  • a central compressed air duct 25 with a constant bore diameter extends over the substantial part of the length of the cutting nozzle 9, wherein the compressed air duct 25 is fed via a arranged at the upper end of the cutting nozzle 9, funnel-shaped tapered insertion section 26 with the heated compressed air from the prechamber 16.
  • the angle ⁇ between the wall of the funnel-shaped insertion section 26 and the longitudinal center axis of the housing 5 is expediently between 18 and 30 degrees, in particular between 20 and 25 degrees.
  • the length of the compressed air channel 25 is 30-50 times, in particular 35-45 times, particularly preferably about 40 times, its bore diameter.
  • the electrical connection 1 is a combined connection, to which not only the temperature sensor 8 is connected, but also supplies the heating coils 19 with electrical energy via an electrical line 15.
  • the air heating is monitored by the temperature sensor 8 and kept at a stable temperature by a PID control method. This results in absolutely constant cutting progressions. Furthermore, this results in no dependencies on ambient temperature fluctuations and temperature fluctuations in the compressed air supply.
  • the temperature is controlled by a PID controller, not shown.
  • the illustrated hot air cutting device works as follows.
  • the hot air cutting device is perpendicular or slightly inclined with a distance of, for example, 8-10 mm over the knitted or woven fabric to be cut and their composite with nonwovens, glass fiber mats, etc., wherein compressed air, for example, 6 bar introduced through the compressed air port 2 and in the ceramic Heating cartridge 6 is heated to 800 ° C, for example. Due to the warming of about 780 ° C, the heated air expands greatly (about 290 times), which - associated with the thin bore diameter of the cutting nozzle 25 - the air is accelerated to supersonic speed. Before the air from the pre-chamber 16 enters the compressed air channel 25, the funnel-shaped insertion section 26 causes an increasing compression of the air.
  • the hot air due to the specially shaped nozzle outlet with a length, which suitably corresponds to a length of 40 times the bore diameter, is bundled into an air jet 17, although within the cutting nozzle 9 a highly turbulent flow (with Reynolds numbers of> 20,000) may be present. This bundling of the air jet stops at the impact point on the goods 18.
  • the exiting air jet 17 Due to the high kinetic energy (which is composed of mass times acceleration) of the exiting air jet 17 knitted and woven goods made of thermoplastic and thermosetting materials and their composite with nonwovens, glass fiber or carbon fiber mats, with melting points above 1000 ° C, separated become. Due to the high kinetic energy, the temperature of the air jet 17 can be kept significantly below the melting temperature of the product to be cut.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP08018159A 2008-10-16 2008-10-16 Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants Not-in-force EP2177662B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL08018159T PL2177662T3 (pl) 2008-10-16 2008-10-16 Sposób i urządzenie do cięcia dzianin i tkanin oraz odpowiednich materiałów kompozytowych
AT08018159T ATE494418T1 (de) 2008-10-16 2008-10-16 Verfahren und vorrichtung zum schneiden von strick- oder webwaren sowie von entsprechenden verbundmaterialien
DE502008002238T DE502008002238D1 (de) 2008-10-16 2008-10-16 Verfahren und Vorrichtung zum Schneiden von Strick- oder Webwaren sowie von entsprechenden Verbundmaterialien
EP08018159A EP2177662B1 (fr) 2008-10-16 2008-10-16 Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08018159A EP2177662B1 (fr) 2008-10-16 2008-10-16 Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants

Publications (2)

Publication Number Publication Date
EP2177662A1 true EP2177662A1 (fr) 2010-04-21
EP2177662B1 EP2177662B1 (fr) 2011-01-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018159A Not-in-force EP2177662B1 (fr) 2008-10-16 2008-10-16 Procédé et dispositif de coupe de produits tricotés ou tissés ainsi que matériaux composites correspondants

Country Status (4)

Country Link
EP (1) EP2177662B1 (fr)
AT (1) ATE494418T1 (fr)
DE (1) DE502008002238D1 (fr)
PL (1) PL2177662T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046305A (zh) * 2012-12-18 2013-04-17 苏州展华纺织有限公司 一种合成面料开孔器
CN103966741A (zh) * 2014-05-22 2014-08-06 苏州东茂纺织实业有限公司 一种热熔断布装置
CN107685361A (zh) * 2017-05-09 2018-02-13 杨培应 气体切割刀
CN108677515A (zh) * 2018-04-24 2018-10-19 深圳市金吉峰科技有限公司 一种热风刀切棉纤技术
CN109895186A (zh) * 2019-04-19 2019-06-18 三康（成都）机械设备有限责任公司 一种热空气切割装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917590A (fr) * 1972-06-14 1974-02-16
DE2342700A1 (de) 1972-08-23 1974-03-07 Parks Cramer Co Verfahren und vorrichtung zur trennung von textilen stoffbahnen
US3978748A (en) * 1974-11-25 1976-09-07 Camsco, Inc. Fluid jet cutting system
DE4204786A1 (de) * 1992-02-18 1993-08-19 Hubert Hergeth Verfahren und vorrichtung zum durchtrennen von verpackungen und ballenumreifungen
US5674581A (en) * 1990-07-10 1997-10-07 Milliken Research Corporation Textile fabric having a thermally modified narrow channel to facilitate separation
JPH1158300A (ja) * 1997-08-14 1999-03-02 Haipaa Fuoton Syst:Kk 溶断機
WO2006138307A2 (fr) * 2005-06-14 2006-12-28 Unifrax Corporation Procede de coupe par jet de fluide

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917590A (fr) * 1972-06-14 1974-02-16
DE2342700A1 (de) 1972-08-23 1974-03-07 Parks Cramer Co Verfahren und vorrichtung zur trennung von textilen stoffbahnen
US3978748A (en) * 1974-11-25 1976-09-07 Camsco, Inc. Fluid jet cutting system
US5674581A (en) * 1990-07-10 1997-10-07 Milliken Research Corporation Textile fabric having a thermally modified narrow channel to facilitate separation
DE4204786A1 (de) * 1992-02-18 1993-08-19 Hubert Hergeth Verfahren und vorrichtung zum durchtrennen von verpackungen und ballenumreifungen
JPH1158300A (ja) * 1997-08-14 1999-03-02 Haipaa Fuoton Syst:Kk 溶断機
WO2006138307A2 (fr) * 2005-06-14 2006-12-28 Unifrax Corporation Procede de coupe par jet de fluide

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046305A (zh) * 2012-12-18 2013-04-17 苏州展华纺织有限公司 一种合成面料开孔器
CN103046305B (zh) * 2012-12-18 2015-04-08 吴江市元通纺织品有限公司 一种合成面料开孔器
CN103966741A (zh) * 2014-05-22 2014-08-06 苏州东茂纺织实业有限公司 一种热熔断布装置
CN103966741B (zh) * 2014-05-22 2015-12-09 泉州中投文化发展有限公司 一种热熔断布装置
CN107685361A (zh) * 2017-05-09 2018-02-13 杨培应 气体切割刀
CN108677515A (zh) * 2018-04-24 2018-10-19 深圳市金吉峰科技有限公司 一种热风刀切棉纤技术
CN109895186A (zh) * 2019-04-19 2019-06-18 三康（成都）机械设备有限责任公司 一种热空气切割装置

Also Published As

Publication number Publication date
EP2177662B1 (fr) 2011-01-05
ATE494418T1 (de) 2011-01-15
DE502008002238D1 (de) 2011-02-17
PL2177662T3 (pl) 2011-06-30

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