WO2003051579A2 - Procede et dispositif pour nettoyer des moules, des outils, des porte-moules et des porte-outils - Google Patents

Procede et dispositif pour nettoyer des moules, des outils, des porte-moules et des porte-outils Download PDF

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Publication number
WO2003051579A2
WO2003051579A2 PCT/DE2002/004662 DE0204662W WO03051579A2 WO 2003051579 A2 WO2003051579 A2 WO 2003051579A2 DE 0204662 W DE0204662 W DE 0204662W WO 03051579 A2 WO03051579 A2 WO 03051579A2
Authority
WO
WIPO (PCT)
Prior art keywords
robot
mold
cleaning
hood
noise protection
Prior art date
Application number
PCT/DE2002/004662
Other languages
German (de)
English (en)
Other versions
WO2003051579A3 (fr
Inventor
Jürgen Von Der Ohe
Original Assignee
Von Der Ohe Juergen
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 Von Der Ohe Juergen filed Critical Von Der Ohe Juergen
Publication of WO2003051579A2 publication Critical patent/WO2003051579A2/fr
Publication of WO2003051579A3 publication Critical patent/WO2003051579A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/16—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating internal surfaces

Definitions

  • the invention relates to a method and a device system for carrying out the method, for cleaning individual molds and tools as well as molds and tools in cycle lines by means of blasting material, preferably with CO 2 pellets or CO 2 snow with compressed air, with the aid of a robot system.
  • blasting material preferably with CO 2 pellets or CO 2 snow with compressed air
  • robot system which is connected to several interconnected axes and which acts on the total area of the mold, divided into several small individual areas, with different beam angles, whereby the cleaning of the form can be carried out in several individual steps or in one operation.
  • auxiliary residues or product residues from molds in particular from molds in cycle lines, is associated with long downtimes because the remaining molds can also not be used when cleaning a mold.
  • components are cleaned with CO 2 dry ice. It is advantageous when using CO 2 pellets and compressed air that no undesirable abrasions occur on the surface to be treated, since the CO 2 radiation is based on the principle of embrittlement of the contaminants due to the cold and on the different surface tension between the workpiece and the contamination caused by the influence of the cold is based. In addition, no subsequent removal of the removed impurities from the blasting media or processing or disposal of the blasting media itself is required.
  • Various technologies and devices are known for cleaning the surfaces of molds in the plastics industry or of vulcanization molds in the tire industry with CO 2 pellets.
  • the molds are primarily cleaned manually. Manual cleaning takes place with the molds open in the area of view of the cleaner.
  • the disadvantage here is the high noise level, the physical strain on the cleaner and the lack of occupational safety.
  • the chain which moves in operation in a certain cycle sequence, must be stopped for cleaning, ie for cleaning a mold, the entire forms of the chain stand still.
  • Vulcanization molds for tires are partial molds that can be opened after vulcanization.
  • segment shapes which usually have an upper shape, which comprises the tire to be vulcanized on the side and on the tread, and which has laterally adjustable segments in the tread area for closing the shape, and which comprise a lower shape (side shell) with which the mold is closed and the remaining side is molded and vulcanized.
  • Another type of shape are two-part shapes, which are formed from two almost identical halves, without displaceable segments, and each comprise a side wall and approximately half of the tread area.
  • DE 195 35 557 A1 describes a device for cleaning tire molds, which consists of a gas-permeable cover hood for the area to be cleaned and which has a central central support on which the jet nozzle is arranged displaceably.
  • a disadvantage of this form is that the nozzle is adjusted manually. The height-adjustable arrangement and the rotary movement of the jet nozzle allow the entire inner area of the mold to be traversed, but the webs, in particular the side surfaces of the webs, which run parallel to the cleaning jet, are not or only partially cleaned.
  • Another disadvantage is that the gas permeability is reduced by the loosened impurities during longer operation.
  • DE 197 12 513 A1 describes a method for cleaning molds in which a multi-axis robot guides the nozzle perpendicularly or at a certain angle to the inner surface of the mold.
  • the multi-axis robot is provided with a noise-reducing jacket which consists of two individual plates and an elastic bellows connecting these plates and which, together with the mold halves, form a unit.
  • DE 198 30 397 A1 the angle of the jet nozzle to the surface to be cleaned can be changed.
  • the disadvantage here is that the jet nozzle has to be adjusted several times within a cleaning area without checking the actual angle. Small deviations of the axis of rotation from the center of the press influence the cleaning result.
  • DE 199 36 698 C1 presents a device for cleaning vulcanization molds. This device consists of an open hood with a manipulation device. The hood is pressed with the open side against the mold half to be cleaned and cleaned with the adjustable nozzle in the manipulation device.
  • the disadvantage of this device is that only one mold half can be cleaned in one operation and that after cleaning the device has to be extended and pivoted into the new position. At the same time, the adapter ring must be changed and the new nozzle position must be set manually.
  • a disadvantage of all known solutions is the rigid unit of the support frame, manipulation device or robot and noise protection. This rigid unit makes positioning difficult due to the different height dimensions between the hall floor and the machine and the unevenness of the hall floor.
  • the aim of the invention is to create a method for cleaning the inner walls of molds and the support and clamping surfaces of molds and tools by means of a blasting material or a blasting material mixture, in particular with CO 2 dry ice or with CO 2 snow, which the Cleaning of the opened molds and tools immediately after the last impression at operating temperature enables reduced noise and that is suitable in its basic principle for cleaning individual molds in cycle lines in the cycle breaks as well as for cleaning large molds in one operation and that the type and intensity of the contamination and the geometric shape of the surface to be cleaned is taken into account.
  • the object is achieved according to claims 1 to 3 by a method in which the surface of the mold to be cleaned is divided into individual areas, which can either be partial surfaces of the mold, or ring or circular sections in the mold, and these surface elements a jet nozzle connected to a rotary gear with a stepper motor, which can be inclined by a certain angle from the vertical, so that the jet nozzle encloses a cone, which is open to the surface to be cleaned, when rotating about the central axis, so that on the partial surface to be cleaned the shape an annulus is cleaned.
  • the central axis is rotated about a vertical that is offset by 90 ° to it, the circular ring becomes a circumferential surface with a width of 2R.
  • the coordination of the speed of the jet nozzle and the speed around the vertical results in an overlap and thus the cleaning intensity.
  • the angle of inclination of the jet nozzle also applies to and cleans surfaces that run parallel to the central axis, for example the profile-forming webs in the vulcanizing mold of the tire press.
  • the rotation of the jet nozzle is changed, for example, into a circular or linear pendulum motion by the stepping motor on the gearbox, and in combination with several axes, the surfaces of three-dimensional shapes with different inflow angles and variable jet parameters adapted to the contamination are cleaned.
  • Another solution according to the invention consists in dividing the surface of the individual shapes to be cleaned within a cycle line into individual surfaces of different sizes, the size of the individual area being determined by the type and intensity of the contamination and by the length of the cycle sequence.
  • the device according to claims 4 to 7 consists of a noise protection hood adapted to the shape to be cleaned, a cleaning unit and an adjusting unit which are designed and constructed as mechanically separate structural units and which are connected by a docking device to form a functional unit, the docking device being the Alignment of the cleaning unit to specific axes or control points of the mold is made possible with the help of the adjustment unit, thus ensuring the automatic cleaning specified in a specific program.
  • the noise protection hood which is clad as a stable unit with appropriate, heat-resistant and gas-impermeable material, can be designed as an independent assembly, for example for installation in tire presses, in an adjustable, rigid manner or can be composed of several rings, and is made on or in the form to be cleaned the adjustment, firmly connected to it.
  • the docking plate on the noise protection hood enables the cleaning unit to be positioned precisely in relation to the shape to be cleaned.
  • the discharge of the compressed air introduced during blasting with CO 2 pellets takes place with the aid of sound absorbers in the docking plate or in the noise protection hood.
  • noise protection hood is designed, depending on the shape, for example an open PU shape, so that it can be used the shape creates a work space enclosing the area to be cleaned, in that the cleaning unit can move freely.
  • the noise protection hood is connected to the cleaning unit using the docking device.
  • the cleaning unit consists of a multi-axis robot, which is mounted on a vertically and horizontally displaceable adjustment unit, and the rotary gear.
  • the docking device consists of two docking plates designed as a frame, one being mounted on the noise protection hood and one on the cleaning unit or the adjustment unit.
  • the adjustment unit consists of a base frame on which the vertical and horizontal slides are mounted in such a way that, by integrating them into the robot controller, with their targeted positioning, they allow the robot to move freely through the cleaning space formed by the shape, noise protection and docking plate and is restricted in its movement by its own geometry, and thus ensure that the cleaning program can be carried out in one operation. After adjustment, the adjustment unit is supported on the floor by height-adjustable claws.
  • the noise protection is firmly inserted into the system to be cleaned or the mold to be cleaned is moved together until there is firm contact between the mold and the noise protection.
  • the carrier unit with the adjustment unit is attached to the noise protection that is fixed in this way and positioned at the same time.
  • the advantage of the invention is that the cleaning of molds in one operation, without additional intervention by the operating personnel, with certain predetermined and reproducible parameters that are essentially dependent on the type and the intensity of the contamination and can be set and that during cleaning , depending on the intensity of the contamination, can be changed, as well as while maintaining or realizing the most favorable angle of attack. Thereby a constant and gentle cleaning is achieved, while reducing the cleaning time.
  • Another advantage of the invention is that the cleaning process can be interrupted in each program step and by dividing the total area into individual areas, the size of which is determined by the cycle length and the contamination, the cleaning of molds in cycle lines in several individual steps, without affecting the Manufacturing process and without expansion and without downtime, is possible.
  • Another advantage of the invention is that the programming of the entire cleaning process and the consistent positioning of the individual assemblies means that the cleaning process can be reproduced and adjusted to the degree of contamination or assigned to certain contamination characteristics, for example, changed release agents in the plastics industry or changes in the rubber mixture.
  • Another advantage is a cost reduction due to the modular structure of the device. It enables the use of cleaning technology on several cycle lines. By replacing the noise protection, the same technology can be used on another cycle line.
  • Another advantage is that, for example when cleaning tire molds, the adjustment times can be reduced by aligning the adjustment unit on the docking plate of the noise protection, the guidance becomes more precise and the contact with the mostly very uneven hall floor only after alignment by the Lowering the claws is made.
  • Another advantage results from the reduction of the noise level from the closed wrapping of the robot's work space required for cleaning through the shape itself, as well as through the gas-impermeable noise protection with the docking plate and the cleaning unit with the noise hood and the silencers integrated in the device. Further advantages and details of the method and the device for cleaning the inner surfaces of molds and tools are explained in more detail using three exemplary embodiments. 1 shows the schematic structure of a device for cleaning a tire mold with a docked carrier unit
  • FIG. 2 shows the schematic structure of a device for cleaning a plastic mold
  • Fig. 3 shows the schematic structure of a device for cleaning tire molds with attached carrier unit
  • FIG. 1 schematically shows an exemplary embodiment of a device for carrying out the cleaning of the inner wall of a tire mold.
  • the container 2 for receiving and guiding the profile 4 divided into segments 3 and the upper shoulder 5 are mounted in the vertical tire press 1.
  • the lower shoulder 7 is fastened on the work table 6.
  • the noise protection 8 which consists of the lower ring 9, which is firmly connected to the docking plate 10 and the height-adjustable upper ring 11, which is also firmly connected to the docking plate 10 by guide rails, is in the open area 12, which is formed between the upper edge of the lower shoulder 7 and the lower edge of the segments 3.
  • the noise protection 8 is lowered to such an extent that it rests firmly on the work table 6. With the help of the stop 15 and the prism stop 16, the exact positioning of the noise protection 8 takes place. After the positioning of the noise protection 8 in the tire press 1, the upper ring 11 is moved upwards against the segments 3 with the aid of the lifting units 17.
  • the vertical actuating unit 23 is mounted with the mounting bracket 24.
  • the mounting bracket 24 carries the horizontal actuating unit 25 and the robot 26.
  • the rotary gear 27 with the stepping motor 28, the jet nozzle 29 and the angle piece 30 is fastened to the robot 26.
  • the robot 26 is moved into the starting position so that the robot 26 can reach the free space 18 through the working opening 31 in the docking plate 10.
  • the robot 26 is covered with the protective hood 39.
  • the jet nozzle 29 is connected by the hose 32 to the CO 2 jet system 33. After the alignment, the cleaning process is triggered by pressing the start button on the control element 34.
  • the work program required for cleaning is stored in the control unit 35.
  • the jet nozzle 29 describes, depending on the cleaning program, a cone with the opening angle 38 and thereby a closed circle around the central axis 13 of the tire press 1 or a pendulum movement with a predetermined angle around the central axis 13 or it is in one given position at this level.
  • the inner surface of the mold to be cleaned is divided into individual circular areas on the shoulders 5, 7 and into lateral areas on the profile 4. The width and number of these surfaces, as well as the order of processing, is determined with the jet parameters and the opening angle 38 of the jet nozzle.
  • the movement combinations defined in the cleaning program between the jet nozzle 29, the axes of the robot 26, the vertical actuating unit 23 and the horizontal actuating unit 25 are, according to a previously determined and tested work program, by the stepper motor 28, the drive motor 36, the drive motor 37 and by the drives of the individual axes of the robot 26 realized.
  • these combinations of movements which are determined by the shape of the tire and the blasting parameters, it is ensured that every point on the inner surface of the mold, one or more times with the same or different spray angle, is exposed to CO2 pellets and thus cleaned.
  • FIG. 2 schematically shows an exemplary embodiment of a device for carrying out cleaning of the shaping surface of an open plastic mold.
  • the plastic mold 40 shown which consists of an upper mold 41 and a lower mold 42, is one of several molds which pass through several production stations on the frame 43 in a closed path. After the finished molded part has been removed, the mold 40 is opened in the station shown or moved open into this station.
  • a support unit 44 the height of which is determined by the dimensions and position of the mold 40, is mounted in front of the opened mold 40.
  • the horizontal actuating unit 25 with the drive motor 37 on which the robot 26 is fastened is located on the carrier unit 44.
  • the docking plate 45 is fastened with the bearing 20 for receiving the exchangeable noise protective hood 46.
  • the exchangeable noise protection hood 46 has the basic shape of a sleeve, which is determined in its design by the contour 47, the mold 40 to be cleaned on the mold side and by the docking plate 48 on the robot side.
  • the horizontal actuating unit 25, the protective hood 53 with the docking plate 45, the noise protective hood 46 and the mold 40 enclose the working space 49 by the axes of the robot 26, together with the rotary gear 27, the stepping motor 28 and the jet nozzle 50, for cleaning can move freely.
  • the size of the work area is determined by the spatial position of the surfaces or surface sections of the upper mold 41 and the lower mold 42 to be cleaned and is determined in preliminary tests.
  • the horizontal adjusting unit 25 is located in the starting position 51 outside the range of movement of the mold 40.
  • the horizontal adjusting unit 25 moves into the working position 52 such that there is contact between the contour 47 of the open mold 40 and the noise protection hood 46.
  • the work space 49 is thus closed.
  • the complete cleaning or partial cleaning of the upper mold 41 and / or the lower mold 42 takes place in accordance with the specified work program stored in the control unit 35.
  • the size of the cleaning sections is determined by the length of the work cycle, by the movement sequences of the jet nozzle 50 and necessary for cleaning by the intensity of the pollution.
  • the horizontal actuating unit 25 moves back to the starting position 51. This individual surface cleaning is repeated according to the total number of molds in circulation. Once all the molds have been run through in this position for cleaning, the robot pivots into the next sub-area according to the work program and the process proceeds in the same way as the previous cleaning cycle.
  • FIG. 3 an attached support unit 54 is shown using the example of a tire shape.
  • the compact noise protection device 56 is inserted and aligned in the vertical tire press 55 with the work table 64.
  • the tire press 55 is then closed so far that the container 2 with the segments 3 rests firmly on the noise protection 56.
  • the noise protection has a mounting plate 57 with the suspension axis 58.
  • the support unit 54 with the vertical unit 59 and the horizontal unit 60 is suspended on the suspension axis 58.
  • the carrier unit 54 is clad with the protective hood 61 in order to reduce noise. When the carrier unit is hooked in, the free space consisting of the two individual areas 62 and 63 is created to secure the movement sequences of the robot 26 and the linear units 59 and 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif de réalisation associé pour nettoyer des moules individuels et des outils, ainsi que des moules et des outils sur des lignes à avance cadencée, au moyen d'un produit de sablage, de préférence des pellets de CO2 ou de la neige carbonique sous pression. Selon ce procédé, un ensemble robot relié à plusieurs axes interconnectés soumet la surface totale du moule, subdivisé en plusieurs parcelles, à l'action de jets envoyés sous différents angles de projection, le nettoyage du moule pouvant être effectué en plusieurs étapes ou une seule opération de travail.
PCT/DE2002/004662 2001-12-19 2002-12-17 Procede et dispositif pour nettoyer des moules, des outils, des porte-moules et des porte-outils WO2003051579A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10162301.1 2001-12-19
DE2001162301 DE10162301A1 (de) 2001-12-19 2001-12-19 Verfahren und Vorrichtung zum Reinigen von Formen, Werkzeugen, Form- und Werkzeugträgern

Publications (2)

Publication Number Publication Date
WO2003051579A2 true WO2003051579A2 (fr) 2003-06-26
WO2003051579A3 WO2003051579A3 (fr) 2003-09-04

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PCT/DE2002/004662 WO2003051579A2 (fr) 2001-12-19 2002-12-17 Procede et dispositif pour nettoyer des moules, des outils, des porte-moules et des porte-outils

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DE (1) DE10162301A1 (fr)
WO (1) WO2003051579A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008081199A2 (fr) * 2007-01-06 2008-07-10 Preptec Solutions Limited Appareil et méthode de nettoyage de surfaces
CN101837568A (zh) * 2010-06-22 2010-09-22 天津新技术产业园区北洋世纪焊接技术有限公司 小型钢丸供料循环器及应用该装置的数控金属表面处理机
CN103240242A (zh) * 2013-04-19 2013-08-14 厦门金瑞镒贸易有限公司 自动干冰清洗轮胎模具的装置
CN103264354A (zh) * 2013-06-14 2013-08-28 铁岭天河机械制造有限责任公司 摇臂轴内孔光整机
CN107370916A (zh) * 2017-06-15 2017-11-21 安徽富煌科技股份有限公司 一种智能公交车摄像机连接装置
CN111571456A (zh) * 2020-05-26 2020-08-25 北京工商大学 一种微细磨料气射流单点直写加工系统及其使用方法

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Publication number Priority date Publication date Assignee Title
US7404408B2 (en) * 2004-11-18 2008-07-29 General Motors Corporation Washer-jet verification apparatus
DE202007013733U1 (de) * 2007-10-01 2009-01-02 Kuka Systems Gmbh Reinigungsvorrichtung
DE102010009933B3 (de) * 2010-03-02 2011-05-12 Wiwox Gmbh Surface Systems Verfahren und Vorrichtung zur Oberflächenbehandlung
DE102011050038A1 (de) * 2011-05-02 2012-11-08 Rapido-Tech Gmbh Reinigungsvorrichtung für Backplatten einer Backautomatenanlage
DE102015219430A1 (de) * 2015-10-07 2017-04-13 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zum Reinigen von Klebeflächen
DE102015219429A1 (de) 2015-10-07 2017-04-13 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Reinigen mithilfe von festem Kohlenstoffdioxid
FR3108050B1 (fr) * 2020-03-13 2023-05-05 Kipp Jens Werner procédé de projection et dispositif de projection

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DE19712513A1 (de) * 1997-03-25 1998-10-01 Air Liquide Gmbh Verfahren und Vorrichtung zum Reinigen einer Innenwandung einer Form mittels Trockeneis
DE19830397A1 (de) * 1998-07-08 2000-01-20 Diw Instandhaltung Gmbh Vorrichtung und Verfahren zum Reinigen von Vulkanisierformen

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DE19712513A1 (de) * 1997-03-25 1998-10-01 Air Liquide Gmbh Verfahren und Vorrichtung zum Reinigen einer Innenwandung einer Form mittels Trockeneis
DE19830397A1 (de) * 1998-07-08 2000-01-20 Diw Instandhaltung Gmbh Vorrichtung und Verfahren zum Reinigen von Vulkanisierformen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008081199A2 (fr) * 2007-01-06 2008-07-10 Preptec Solutions Limited Appareil et méthode de nettoyage de surfaces
WO2008081199A3 (fr) * 2007-01-06 2008-11-20 Preptec Solutions Ltd Appareil et méthode de nettoyage de surfaces
CN101837568A (zh) * 2010-06-22 2010-09-22 天津新技术产业园区北洋世纪焊接技术有限公司 小型钢丸供料循环器及应用该装置的数控金属表面处理机
CN103240242A (zh) * 2013-04-19 2013-08-14 厦门金瑞镒贸易有限公司 自动干冰清洗轮胎模具的装置
CN103264354A (zh) * 2013-06-14 2013-08-28 铁岭天河机械制造有限责任公司 摇臂轴内孔光整机
CN107370916A (zh) * 2017-06-15 2017-11-21 安徽富煌科技股份有限公司 一种智能公交车摄像机连接装置
CN107370916B (zh) * 2017-06-15 2023-08-22 安徽交欣科技股份有限公司 一种智能公交车摄像机连接装置
CN111571456A (zh) * 2020-05-26 2020-08-25 北京工商大学 一种微细磨料气射流单点直写加工系统及其使用方法

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Publication number Publication date
DE10162301A1 (de) 2003-07-10
WO2003051579A3 (fr) 2003-09-04

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