EP3732002A1 - Vorrichtung zum aufbringen eines wulstes aus kunststoff und verfahren zu dessen durchführung - Google Patents

Vorrichtung zum aufbringen eines wulstes aus kunststoff und verfahren zu dessen durchführung

Info

Publication number
EP3732002A1
EP3732002A1 EP18842446.9A EP18842446A EP3732002A1 EP 3732002 A1 EP3732002 A1 EP 3732002A1 EP 18842446 A EP18842446 A EP 18842446A EP 3732002 A1 EP3732002 A1 EP 3732002A1
Authority
EP
European Patent Office
Prior art keywords
cord
plastic substance
nozzle
profile
bead
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
Application number
EP18842446.9A
Other languages
English (en)
French (fr)
Inventor
Didier BARBARIT
Erwan JANTY
Bertrand SOUFFLET
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.)
Safran Nacelles SAS
Original Assignee
Safran Nacelles SAS
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 Safran Nacelles SAS filed Critical Safran Nacelles SAS
Publication of EP3732002A1 publication Critical patent/EP3732002A1/de
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B05D1/265—Extrusion coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J11/00—Manipulators not otherwise provided for
    • B25J11/0075—Manipulators for painting or coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J13/00—Controls for manipulators
    • B25J13/08—Controls for manipulators by means of sensing devices, e.g. viewing or touching devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J13/00—Controls for manipulators
    • B25J13/08—Controls for manipulators by means of sensing devices, e.g. viewing or touching devices
    • B25J13/085—Force or torque sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J13/00—Controls for manipulators
    • B25J13/08—Controls for manipulators by means of sensing devices, e.g. viewing or touching devices
    • B25J13/088—Controls for manipulators by means of sensing devices, e.g. viewing or touching devices with position, velocity or acceleration sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/0019—End effectors other than grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
    • B25J19/02—Sensing devices
    • B25J19/021—Optical sensing devices
    • B25J19/023—Optical sensing devices including video camera means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/10—Programme-controlled manipulators characterised by positioning means for manipulator elements
    • B25J9/12—Programme-controlled manipulators characterised by positioning means for manipulator elements electric
    • B25J9/123—Linear actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1628—Programme controls characterised by the control loop
    • B25J9/1633—Programme controls characterised by the control loop compliant, force, torque control, e.g. combined with position control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1656—Programme controls characterised by programming, planning systems for manipulators
    • B25J9/1664—Programme controls characterised by programming, planning systems for manipulators characterised by motion, path, trajectory planning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1674—Programme controls characterised by safety, monitoring, diagnostic
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/02—Small extruding apparatus, e.g. handheld, toy or laboratory extruders
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B29C48/155—Partial coating 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/266—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated

Definitions

  • the invention relates to the field of removing a bead of a plastic substance on a profile.
  • the profile is typically delimited by two faces which belong to two distinct parts, the bead making it possible to seal between the two faces.
  • a manual removal of the cord consists successively to deposit the cord on the profile, to smooth the cord and then to control the cord visually.
  • a disadvantage of the manual removal of the cord lies in the difficulty of meeting the quality criteria defined above.
  • the present invention aims in particular to solve these drawbacks and relates for this purpose to a device for removing a bead of a plastic substance on a profile delimited by at least one face of removal of the cord, the device comprising:
  • a delivery effector comprising an extrusion nozzle which is connected to a reserve of plastic substance and which extends axially along an axis of extrusion, and
  • a force feedback sensor which makes it possible to measure the force applied by the nozzle on the profile during the removal of the cord, characterized in that it comprises an electronic calculator implementing a computer program which is designed to:
  • the device of the invention provides a cord that meets the quality criteria and is able to adapt to any type of profile.
  • the device makes it possible to follow the profile of the part even if the profile has a dispersion or a defect not listed by the theoretical trajectory of the robotic arm.
  • said predefined value is equal to approximately ten newtons.
  • the device comprises a deposit sensor which is adapted to measure the amount of plastic substance deposited on the profile, the speed of movement of the robotic arm being controlled by the quantity of plastic substance actually deposited.
  • This characteristic makes it possible to correct a possible divergence between the flow of plastic substance and the speed of displacement of the nozzle.
  • the depositing sensor is a laser sensor which is oriented towards the bead of deposited plastic substance.
  • the speed of movement of the robotic arm is slaved to the extrusion speed of the plastic substance.
  • This characteristic makes it possible to obtain a bead of constant geometry.
  • the device comprises a control member which is adapted to record control data on the physical appearance of the plastic substance bead, and said computer program is designed to process the control data and to validate or invalidate the quality. the bead of plastic substance deposited.
  • control data are recorded by the control member during the removal of the cord.
  • a smoothing of the cord is performed by the extrusion nozzle simultaneously with the removal of the cord.
  • the plastic substance reserve is a cartridge provided with a piston, and the device comprising an actuator which is adapted to push the piston to extrude said plastic substance through the extrusion nozzle.
  • the invention also relates to a method for implementing a device of the type described above, characterized in that it comprises at least:
  • the speed of movement of the robotic arm is controlled by the quantity of plastic substance actually deposited.
  • the method comprises a step of controlling the bead of plastic substance, which consisite to treat the control data and validate or invalidate the quality of the bead deposited.
  • FIG. 1 is an overall perspective view which illustrates the device for removing a bead of a plastic substance on a profile comprising a robotic arm, according to the invention
  • FIG. 2 is a detailed perspective view illustrating the plastic substance dispensing effector and the associated actuator
  • FIG. 3 is a detailed perspective view illustrating a bead of plastic substance deposited on the profile
  • FIG. 1 There is shown in Figure 1 a device 10 for removing a bead 12 of a plastic substance.
  • Plastic substance means any material which, at a certain stage of its elaboration, may undergo permanent deformation and take the form desired. According to the embodiment described here, the plastic substance is a putty which is adapted to make a seal.
  • the cord 12 is deposited on a profile 14 which has the shape of a scalloped edge.
  • the profile 14 is delimited by a first deposit face 16 and a second deposit face 18 which are arranged at right angles to form the profile 14.
  • the first deposit face 16 and the second deposit face 18 belong to a first support piece 20 and a second cover piece 22 respectively.
  • the device 10 comprises a robotic arm 26.
  • the robotic arm 26 carries a dispensing effector 28 which comprises a cartridge 30 of plastic substance, the cartridge 30 being provided with a piston 32 and a nozzle 34 for extruding the plastic substance.
  • the cartridge 30, the piston 32 and the nozzle 34 extend axially along an axis A of extrusion.
  • the device 10 comprises an actuator 36 comprising an electric jack 38 which is associated with a motor 40.
  • the electric ram 38 has a free end that is axially slidable along the extrusion axis A and is attached to the piston 32 of the cartridge 30 to push the plastic substance through the extrusion nozzle 34.
  • the motor 40 is a DC motor which is associated with a rotary encoder (not shown), to allow to determine the rotation speed of the motor shaft and therefore the flow of plastic substance through the extrusion nozzle 34.
  • the device 10 according to the invention comprises a force feedback sensor (not visible) which is housed in the robotic arm, and which measures the force F (illustrated in FIG. extrusion on the deposition faces 16, 18, along the axis A of extrusion.
  • the force feedback sensor may comprise several elements adapted to measure a force, such as strain gauges for example.
  • the device 10 comprises an electronic computer 42, of the computer type, which implements a computer program.
  • the computer program is designed to control the robotic arm 26 in space following a theoretical trajectory that is predetermined.
  • the theoretical trajectory is a three-dimensional digital representation of the geometry of the profile 14 on which the bead 12 must be deposited.
  • the profile 14 has a geometry that differs substantially from the theoretical trajectory, for example if the profile 14 has a manufacturing defect.
  • the computer program is designed to correct the theoretical trajectory following the measurements taken by the force feedback sensor, so that the effort F of support of the nozzle 34 on the faces of removal 16, 18 measured by the sensor force return, tends to a predefined value, to allow the nozzle 34 to remain in contact on the removal faces 16, 18.
  • the force feedback sensor will measure a decrease in the force F of pressing the nozzle 34 on the profile 14 when the nozzle is going to to reach the hollow, this measured drop immediately causing a correction which consists of moving the nozzle 34 to the profile 14 so that the support force F tends to the predetermined value.
  • the predefined value of the effort F to be attained must not be too high in order not to mark the profile.
  • the predefined value of the effort F is equal to approximately ten newtons.
  • the computer program implemented by the electronic computer 42 is designed to allow the nozzle 34 to deviate from the theoretical trajectory more markedly in a plane perpendicular to the direction of advancement of the nozzle 34, that is to say in a transverse vertical plane according to Figure 4, to promote the quality of the cord 12.
  • the displacement of the nozzle 34 is "flexible” in a plane perpendicular to the direction of advancement of the nozzle 34 and “rigid” in the plane of displacement of the nozzle 34.
  • the device 10 comprises a deposit sensor 43 which is mounted on the frame of the effector 28, facing the outlet mouth of the extrusion nozzle 34.
  • the deposit sensor 43 is adapted to measure the amount of plastic substance deposited on the deposit face, the speed of movement of the robotic arm 26 being slaved to the amount of plastic substance actually deposited by the computer program.
  • the depositing sensor 43 is a laser sensor.
  • the laser deposit sensor 43 makes it possible to record the geometry of the cord 12, and in particular the height of the cord 12.
  • the speed of movement of the effector 28 is increased so that the amount of plastic substance deposited forming the cord 12 decreases.
  • the depositing sensor 43 may also be a digital camera or any other type of sensor adapted to determine the geometry of the cord 12.
  • the speed of displacement of the effector 28 is also controlled by the extrusion rate of the plastic substance, which is determined by the rotary encoder associated with the motor 40.
  • the extrusion nozzle 34 extends axially perpendicularly to its direction D of advancement, with an inclination of an angle a1 of ten degrees, so as to smooth the cord 12 simultaneously with the removal of the bead 12, in a longitudinal and vertical plane according to FIG.
  • the inclination of the nozzle 34 along the angle a1 is oriented towards the rear.
  • the inclination of the nozzle 34 along the angle a1 may be oriented forward.
  • the extrusion nozzle 34 extends axially along the bisector of the angle delimited by the first face of 16 and the second depositing face 18, in a vertical and transverse plane according to FIG.
  • the extrusion nozzle 34 is inclined at approximately 45 degrees with respect to the first deposit face 16 and the second deposit face 18.
  • the device 10 comprises a control member 44 which is adapted to record control data on the physical appearance of the bead 12 of plastic substance.
  • the control data are recorded by the control member 44 during removal of the cord 12.
  • control data can be read by the control member 44 during a second movement of the robotic arm 26 which is performed after a first cord removal movement 12.
  • the control member 44 is for example a digital camera.
  • the computer program implemented by the electronic computer 42 is designed to process the control data delivered by the control member 44, and to validate or invalidate the quality of the bead 12 of plastic substance deposited, compared to a predetermined reference.
  • the invention also relates to a method for implementing the device 10 described above.
  • the method comprises a step of controlling the robotic arm 26 in the space along the predetermined theoretical trajectory of the robotic arm 26.
  • the method performs a step of correcting the theoretical trajectory according to the measurements recorded by the force feedback sensor, so that the force F of pressing the nozzle 34 onto the profile 14, measured by the force feedback sensor, tends to a predefined value of about ten newtons, to allow the nozzle 34 to remain in contact on the removal faces 16, 18.
  • the method according to the invention enslaves the speed of movement of the robotic arm 26 to the amount of plastic substance actually deposited which is measured by the depositing sensor 43, so as to obtain a cord 12 of constant geometry.
  • the method also comprises a step of controlling the cord 12 of plastic substance, which consisite to process the control data provided by the control member 44 and validate or invalidate the quality of the cord 12 deposited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manipulator (AREA)
EP18842446.9A 2017-12-29 2018-12-24 Vorrichtung zum aufbringen eines wulstes aus kunststoff und verfahren zu dessen durchführung Pending EP3732002A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1763352A FR3076239B1 (fr) 2017-12-29 2017-12-29 Dispositif pour la depose d'un cordon d'une substance plastique et son procede de mise en oeuvre
PCT/FR2018/053541 WO2019129989A1 (fr) 2017-12-29 2018-12-24 Dispositif pour la dépose d'un cordon d'une substance plastique et son procédé de mise en oeuvre

Publications (1)

Publication Number Publication Date
EP3732002A1 true EP3732002A1 (de) 2020-11-04

Family

ID=61258525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18842446.9A Pending EP3732002A1 (de) 2017-12-29 2018-12-24 Vorrichtung zum aufbringen eines wulstes aus kunststoff und verfahren zu dessen durchführung

Country Status (4)

Country Link
US (1) US20200324311A1 (de)
EP (1) EP3732002A1 (de)
FR (1) FR3076239B1 (de)
WO (1) WO2019129989A1 (de)

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CN106694319B (zh) * 2017-03-22 2019-06-18 京东方科技集团股份有限公司 曲面涂布装置及涂胶设备
CN110976212B (zh) * 2019-12-19 2021-10-22 广东博智林机器人有限公司 打胶机器人的视觉引导方法、装置和系统
CN111530697A (zh) * 2020-04-01 2020-08-14 国机智能科技有限公司 一种三维曲面工件精准涂胶系统及方法
CN112354719A (zh) * 2020-10-13 2021-02-12 中铭谷智能机器人(广东)有限公司 一种自动喷涂控制方法
CN112405523A (zh) * 2020-10-20 2021-02-26 深圳拓邦股份有限公司 机器人碰撞检测方法、装置及机器人

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JP2019510882A (ja) * 2015-12-16 2019-04-18 デスクトップ メタル インコーポレイテッドＤｅｓｋｔｏｐ Ｍｅｔａｌ， Ｉｎｃ． 付加製造方法及びシステム
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Also Published As

Publication number Publication date
WO2019129989A1 (fr) 2019-07-04
FR3076239A1 (fr) 2019-07-05
FR3076239B1 (fr) 2020-01-10
US20200324311A1 (en) 2020-10-15

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