• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a device for receiving and transporting individual textile webs or stacks of textile webs with at least one arranged on a support frame gripping unit (5) having at least two gripping slides (7, 8, 9), the longitudinally parallel and movable relative to each other are and their active surfaces gripping extensions are provided, which is characterized in that at least two gripping extensions adjacent gripper slide (7, 8, 9) form a gripping opening and individual fibers or fiber bundles are clamped in these gripping openings.
    公开号:AT512984A2
    申请号:T503232013
    申请日:2013-05-15
    公开日:2013-12-15
    发明作者:
    申请人:Benteler Automobiltechnik Gmbh；
    IPC主号:
    专利说明:

    Device and method for receiving and transporting individual textile webs or stacks of textile webs
    The invention relates to a device for receiving and transporting textile webs or stacks of textile webs, and a method for this.
    Lightweight construction is playing an increasingly important role in modern automotive engineering. Weight savings to reduce CO2 emissions are in the spotlight, and the onset of electric mobility with its challenges is doing its utmost to drive the integration of new materials into motor vehicles.
    Fiber-reinforced plastics have a much lower weight than steel with comparable mechanical properties and thus represent an important option for weight reduction in vehicles.
    Fiber-reinforced plastics consist for example of glass or carbon fibers, which are enveloped by a thermoplastic or thermosetting matrix.
    There are several methods to produce such plastic parts. For example, in resin transfer molding, the fiber material is deposited in a tool and, after closing the tool, the matrix material is injected into the mold cavity. Under the influence of pressure and temperature, the final component is created.
    In the prepreg process, fibrous materials already impregnated with matrix resin are used, deposited in tools or molds and finally shaped into components.
    Transporting the textiles and storing them in a tool or on a work surface is a particular challenge, since the textiles are mostly soft and therefore prone to drape or sag.
    From the prior art, a variety of methods are known to receive and transport textile materials. The term textile materials includes tissue and scrim as well as felts and nonwovens and other material forms. These textiles may be in a dry state, but also iPrinted: 16-05-2013 [EQ14 2 as prepregs, in which the fiber material is already impregnated with matrix material. The latter are particularly difficult to handle because they are also very sticky due to the matrix material. The materials that make up these textiles range from glass and carbon fiber to basalt, metal and aramid to natural fibers. Frequently, so-called suction pads are used for textile transport. These have suction cups, which are pressed onto the textile web to be moved and then subjected to negative pressure. The textile web is sucked in, lifted and deposited again at a predetermined place.
    The disadvantage of this method is that at most preimpregnated textile webs can be moved. With a loosely woven fabric or scrim, it is not possible to produce a sufficient negative pressure, since a complete seal against the ambient pressure is not possible.
    A safe lifting, let alone a transport is not possible.
    But even with the use of prepregs, it can happen that the suction cups stick through the matrix material and thus the oppression can not be maintained. This again leads to the danger that the textiles uncontrollably prematurely detached from the carrying device.
    With freeze grippers, the textiles are frozen to the transport devices, so to speak. For this purpose, liquid is brought to the point of application of the gripper and cooled. After depositing, the gripper is heated, the frozen melts and evaporates and the textile dissolves again.
    A disadvantage of this technology is that only one textile web can be transported at a time. There is also the danger that the textile web is contaminated by residues of the frozen liquid.
    Needle grabs possess according to the design several long thin needles, which intervene from above usually at an angle to the textile level in the textile and this hold so that the textile can be transported. Here it is even possible to handle a stack with several textile layers. The disadvantage, however, is the
    Printed: 16-05-2013 IE014 3 10 2013/50323
    The fact that the penetration of the needles, especially with thicker piles of layers, shifts the fiber structure. There may be holes or even wrinkles, which affect both the structural tasks, but in visible parts and the visual impression.
    Another disadvantage is that needle grippers are used only locally on a textile and a large number of such gripping units must be used for handling large-area blanks, which multiplies the cost of a corresponding device.
    US 4 605 216 A describes a device for gripping fiber material. It has for this purpose gripping units whose receiving devices for the fiber material consist of circular concentrically arranged sawtooth structures. These receiving devices move in opposite directions and clamp the fiber material between the saw teeth of the individual receiving units.
    A similar functional operation disclosed in US 4,892,298 A where on a transport device for fiber materials gripping units are mounted, which have saw blade-like receiving devices. These receiving devices lie flat against each other, so that the saw teeth can each take adjacent receiving devices between them fiber material.
    However, especially in the case of a larger number of fiber layers, the number of layers is limited.
    It is an object of the invention to provide a device for receiving and transporting textile webs or stacks of textile webs available, which compensates for the disadvantages of the prior art and has the simplest possible structure. Moreover, it is the object of the invention to propose a method that allows the handling of textile webs or stacks of textile webs without the disadvantages known from the prior art.
    The objective part of the object is achieved by a device having the features of claim 1, while the procedural part of the object is achieved by a method according to claim 7.
    Prihted: 16-05-2013 [E014 4 102013/50323
    Further advantageous embodiments of the invention are the subject of the dependent subclaims.
    A device for receiving and transporting individual textile webs or stacks of textile webs is presented, which has a carrying frame with at least one gripping unit arranged thereon. The gripping unit in turn has at least two gripping slides, which are movable parallel and relative to one another in their longitudinal direction. The gripping slides have gripping extensions on their active surfaces. As active surfaces, the surfaces of the gripping slides are referred to, which face the textile webs during the gripping process and interact with them via the extensions.
    At least two gripping extensions of adjacent gripper slides together form a gripping opening. During the gripping process, the gripper slides move parallel to each other. The gripping opening is closed, so that individual fibers or Faserbündei be clamped in the gripping openings.
    The invention is characterized in that the gripping projections are formed as a comb structure and the gripping projections are arranged at an angle smaller than 90 ° relative to the effective surface of the gripping slide.
    Thanks to the purely mechanical gripping process, all sorts of textile types can be handled. Both the gripping of dry, as well as impregnated textiles is possible and also the fiber structure (for example, fabric, scrim, fleece) does not matter. Even wide rovings or towpregs can be transported with it.
    To close the gripping openings, the gripper slides must be moved only over very small plugs in the order of millimeters. Thus, the claim to the performance of the gripper slides moving drive units is conceivable low.
    Depending on the thickness of the fiber bundles, the distance of the gripping extensions or the size of the gripping opening can be designed. iPrinted: 16-05-2013 E014 5'10 2013/50323
    Under a comb-like structure is to be understood that in the gripping processes whose length is many times greater than their width or their diameter. This makes it possible, without violating the fiber material, to penetrate deep into a stack of textile webs with the gripping processes. This is all the more possible if the free ends of the gripping projections are tapered. Due to this particularly gentle treatment of the textiles, the invention is particularly well suited for gripping a stack of textile webs, of course, a single textile web can be taken in this way.
    In an arrangement of the Greäffort sets at an angle less than 90 ° relative to the active surface, the gripping extensions of each corresponding gripper slide against each other and then together form a closed triangular gripping opening in a closed position. This additionally prevents slippage of the textile webs from the gripping openings during transport.
    The length of the gripping units or the active surfaces of the gripping slides can be adapted as desired to the geometry of the textile web or the stack of textile webs.
    It is thus possible to handle with a small number of inventive gripping units and textile blanks with dimensions of several meters.
    A gripping unit according to the invention is thus very simple and does not require complex control.
    Due to the short movements and the precise gripping, which is also extremely fast, there is also the risk of an undesired shift of the fiber bundles and thus the formation of holes in the textile webs no longer.
    If only individual textile webs are moved, then it is not even necessary for the extensions to reach through the textile and to clamp an entire fiber bundle, but it is sufficient to grasp a few threads on the surface of the textile web. The material is thus spared.
    Particularly preferably, the gripping slide made of a rigid material. It may be metal or a plastic. This prevents the fibers or fiber bundles from falling out of the gripping openings and being lost during transport, for example when the gripped textile is very large and therefore very heavy or a textile pile is very thick , Then, when using more flexible materials there is a risk that the gripping processes are bent and the gripping opening opens. This is avoided by bending resistant material.
    To ensure the controlled movement of the gripper, they are arranged in a further preferred embodiment of the invention in a guide unit. This guide unit is to ensure that the gripper slide during the gripping process as intended move parallel and relative to each other and not tilt, bend or cut out of the intended movement in any other way. In this case, the guide unit can extend completely or partially over the length of the gripper slide. It may be, for example, a rail, in which the gripper slides are inserted. The guide unit may also consist, for example, of a plurality of elements which clamp the gripping slides between them.
    A further preferred embodiment of the invention provides that the length of the gripping projections is dimensioned so that at least two superimposed textile layers can be accommodated. In particular, the length of the Greiffortsätze is sized so that a certain number of textile layers can be recorded.
    This makes it possible to always lift a well-defined number of textile layers from a stack with a large number of textile layers and to process them further. This is an advantage over other known devices for transporting fiber textiles. With suction or freezing grippers, only one textile layer can be handled at a time. With needle grippers it is indeed possible to lift several layers simultaneously, but to remove a defined number of layers from a larger stack is difficult to achieve.
    In a gripping element according to the invention, however, the number of recorded textile layers by the thickness of the individual layers and the length of
    Printed: 16-06-2013 IE014 7 [102013/50323
    Gripping processes defined. By this property, the gripping device according to the invention can be used variable, as the previously known devices.
    The movement of the gripper of the gripping element can be done by a pneumatic, hydraulic or electric drive. This drive is connected to the gripper slides to be moved. The drive can be made very simple in terms of its mechanism, since no major movements must be performed and no large forces must be applied in order to perform a gripping movement with the gripper slides. If several gripper slides moved simultaneously, this can therefore be done easily by the same drive.
    As a result, the gripping elements can be constructed very compact and easy. The simple structure, they are also very inexpensive and low maintenance.
    The dimension of the effective surface of the gripping units is chosen according to the extent of the textile webs so that the textile web or the stack of textile webs can be gripped as intended, transported and stored in particular without drape. For this purpose, it may also be necessary to arrange a plurality of possibly even differently sized gripping units on a support frame. In order to further increase the variability and possible uses of a gripping device according to the invention, it is of particular advantage if the gripping units are arranged independently of each other movably on the carrying frame.
    As a result, on the one hand, it is easy to react when the cut of the transported textiles changes without having to replace the entire gripping device.
    On the other hand, a movable arrangement of the gripping units also allows a tensioning of the textile before depositing and even draping the textile on or in a mold.
    Printed: 16-05-2013 P) 14 8 [10 2013/50323
    The procedural part of the invention is achieved by a method for transporting individual textile webs or stacks of textile webs with a device according to at least one of claims 1 to 6, comprising the following method steps: - positioning the device in an initial position, wherein the gripping openings are opened; Closing the gripping openings by a relative movement of adjacent gripper slides, wherein individual fibers or fiber bundles are clamped in the gripping opening; - Lifting and transport of the textile web or the stack of textile webs in an end position; - Store the textile web or the stack of textile webs in a designated place.
    The gripping device is first brought into an initial position, wherein the gripping openings of the gripper slides are opened. The gripping device is located directly above the male textile web or the stack of textile webs. To grasp the fibers or fiber bundles, the gripping processes must penetrate into the fiber material. Depending on the configuration of the gripper and the extensions, and the number of textile webs to be absorbed, the gripping units are thus pressed with a coordinated force on the textile web or stack of textile webs, so that in the subsequent relative movement of the gripper to each other either whole fiber bundles or at least individual Fibers can be trapped in the closing gripping opening.
    Subsequently, the textile web or the stack of textile webs is raised and brought into an end position. There, the gripping openings are opened again and stored the textile web or the stack of textile webs at a designated storage location. It can be a worktable, a tool or even a draping form.
    [Printed: 16-05-2013 ίΕ014 9 [10 2013/50323
    In a preferred embodiment of the method, the gripper slides are moved further in the closing direction after the textile web or the stack of textile webs have been deposited so that the trapped fibers or fiber bundles are severed.
    In this way, the textile web or the stack of textile webs can already be trimmed during draping or depositing, whereby a step in the production of fiber components, which also often must be done manually, can be saved.
    Other objects, advantages, features and applications of the present invention will become apparent from the following description of an embodiment with reference to the drawings. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, also independent of their summary in the claims or their dependency.
    Showing:
    Figure 1 is a gripping device according to the invention;
    2 shows a gripping unit according to the invention.
    An example embodiment of a gripping device 1 according to the invention is shown in FIG. 1. Attached to a carrying robot 2 is a carrying frame which consists of a carrying arm 3 and two transverse struts 4a, 4b. In turn, two gripping units 5 according to the invention are fastened to these transverse struts 4a, 4b. The two gripping units 5 hold a textile web 6 at their ends.
    The gripping units 5 are movable by motors along the transverse struts 4a, 4b of the support frame. They are guided in rails, which are provided in the transverse struts 4a, 4b. The gripping units 5 can thus be variously positioned within the framework of the construction. The handling of the textile web 6 is carried out according to a programming that controls the movement of the robot and the gripping units 5. 10 10 10 2013/50323 iprinted; 16-05-2013
    By the direction of movement of the gripping elements along the transverse struts 4a, 4b, it is possible to stretch the sagging textile web 6 before, during or after the transport process and thus store wrinkle-free in a mold or on a die.
    Due to the interplay of carrying robots 2, support frame and the extremely precise and gentle material gripping gripping units 5, one is able to transport almost arbitrarily cut and large textile webs 6 and handle.
    The gripping units 5 can be aligned with the respective contour of the textile web 6, so that a gripping device 1 can be used for a multiplicity of similar, for example differently long, textile blanks. The gripping units 5 can be selectively opened and closed independently, so that in combination with a movement of the gripping units 5 or the entire support frame and a draping of the textiles is possible.
    The vorgesteilte here embodiment of the gripping units 5 has three gripping slides 7, 8, 9, which are equipped with gripping projections (Fig. 2). The gripper slides 7, 8, 9 are mounted in a guide unit 10. This is formed by a rail, in which the gripping slide 7,8,9 are inserted. As a result, the gripping slides 7, 8, 9 are guided parallel to one another along their direction of movement and tilting or tilting relative to one another is avoided.
    Between the rail and the outer the gripper slides 7, 9, a rubber lip is attached. Through this, the gripping slides 7, 8, 9 are pressed against each other, which additionally supports the guidance of the gripper slides 7, 8, 9 in the guide unit 10. In addition, the rubber lip 10 prevents the penetration of dirt and moisture into the rail, which would damage the individual components and impair their functionality.
    Such an embodiment of a gripping unit 5 according to the invention thus consists of only a few parts, is therefore easy to build together and very low maintenance. 11 11 N02013 / 50323 [Printed: 16-05-2013
    The individual components are also extremely cheap. Thus, for example, as a guide unit 10, a simple aluminum profile can be used, which can be purchased by the meter. Also, the drive unit 11 is to be produced by commercial means. As a result, gripping units 5 according to the invention are also very inexpensive to produce, so that when converting the gripping device to new blanks of the textile webs or stacks of textile webs no large new investment must be made.
    A gripping extension of the middle gripper slide 8 forms a gripping opening, each with a gripping extension of the outer gripper slides 7, 9. A fiber or a fiber bundle is therefore gripped by a total of three gripping processes. For this gripping operation, the gripping units 5 are brought over the textile web or the stack of textile webs which is provided on a working surface. The gripping processes are in an open position. The respective one gripping opening forming gripping extensions of the outer and the middle gripper slide are positioned at a distance from each other. The gripping units 5 are pressed onto the textile material, so that the gripping extensions can penetrate between the fibers or fiber bundles of the textile web.
    When transporting a pile of textile webs, make sure that the pressure is not so high that the gripping extensions dig into the surface of the work surface, but high enough that when removing a pile of textile webs, all of the intended Single layers are recorded. Here it is also important that the length of the Greiffortsätze is matched to the thickness of the textiles or the number of layers in a stack to be transported.
    Then, a closing movement of the middle grab slide 8 takes place such that the fiber bundles are detected with the gripping opening. The gripping processes are then in a closed position. This closing movement is extremely short and fast, so that while the fiber bundles are not moved.
    It may also be a trim of the textile material may be provided, for example after the laying of the textile web to remove excess material. In this case, the movable grasping slide 8 is moved further in the closing direction until the grasping slides 7, 8, 9 have severed the textile.
    After reaching the intended end position of the gripping units 5, the middle gripper slide 8 is moved back again into its starting position, the gripping openings release the fiber bundles and the semifinished textile product is deposited at a designated storage position.
    As already described above, by skillful movement and successive opening of the individual gripping elements, the textile web or the stack of textile webs can be draped specifically on or in a mold. To support this, in another embodiment of the invention the gripper slides can also be fitted to the contour of a mold with a curved active surface, whereby even more complex shapes can be covered with textile material.
    [Pririted: 16-05-2013 IE014 13 [10 2013/50323
    Labels: 1 - Gripping device 2 - Robot 3 - Support arm 4a - Cross strut 4b - Cross strut 5 - Gripping unit 6- Textile web 7- Gripper 8 - Gripper 9 - Gripper 10 - Guide unit 11 - Drive unit
    权利要求:
    Claims (8)
    [1]
    Printed: 16-05-2013 [102013/50323] Claims 1. A device for receiving and transporting individual textile webs or stacking textile webs with at least one gripping unit (5) arranged on a carrying frame, which has at least two gripper slides (7, 8, 9) which are movable in the longitudinal direction parallel and relative to each other and on the effective surfaces of which gripping extensions are provided, at least two gripping extensions (7a, 8a, 9a) of adjacent gripper slides (7, 8, 9) forming a gripping opening (14) and individual fibers or fiber bundles These gripping openings (14) can be clamped, characterized in that the gripping projections are formed as a comb structure and the gripping projections are arranged at an angle smaller than 90 ° relative to the effective surface of the gripping slide (7, 8, 9).
    [2]
    2. Device claim 1, characterized in that the gripping slide (7,8,9) consist of a rigid material.
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that the gripping slide (7, 8,9) are arranged in a guide unit (10).
    [4]
    4. The device according to at least one of the preceding claims, characterized in that the length of the gripping projections is dimensioned so that at least two superimposed textile layers can be accommodated.
    [5]
    5. Device according to at least one of the preceding claims, characterized in that the at least one movable gripper slide (7, 8, 9) by a pneumatic or hydraulic or electric drive is movable.
    [6]
    6. Device according to at least one of the preceding claims, characterized in that the gripping units (5) are arranged independently of each other movably on the support frame.

    [Printed: 16-05-2013 (E015I (10 2013/50323
    [7]
    7. A method for transporting individual textile webs or stacks of textile webs with a device according to at least one of claims 1 to 6, comprising the following method steps: - positioning the device in an initial position, wherein the gripping openings are opened; - closing the gripping openings by a relative movement of adjacent gripper slides (7, 8, 9), wherein individual fibers or fiber bundles are clamped in the gripping openings; - Lifting and transport of the textile web or the stack of textile webs in an end position; - Store the textile web or the stack of textile webs in a designated place.
    [8]
    8. The method according to claim 7, characterized in that after depositing the gripper slides (7,8, 9) are moved further in the closing direction and sever the fibers or fiber bundles.
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    同族专利:
    公开号 | 公开日
    AT512984A3|2014-02-15|
    DE102012104276A9|2014-02-27|
    DE102012104276A1|2013-12-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2160437A1|1971-12-06|1973-06-14|Ivanhoe Research Corp|Fabric pieces destacking machine - with single feed grippers having barbed feet|
    FR2214292A5|1973-01-16|1974-08-09|Ctre Etud Tech Ind Habillement|
    US4892298A|1983-06-02|1990-01-09|Richard R. Walton|Device and method for pickup of sheet-form flexible fabric or the like|
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    JPS61206747A|1985-03-09|1986-09-13|Yoshiro Kawashima|Gripping device for fabric|
    JPH06591B2|1987-11-30|1994-01-05|日本板硝子株式会社|Thin film sheet peeling and conveying device|
    DE3929100C2|1989-09-01|1991-06-13|Liba Maschinenfabrik Gmbh, 8674 Naila, De|
    JP3474916B2|1993-03-17|2003-12-08|株式会社バルダン|Cloth feeder|
    DE19827292C1|1998-06-19|1999-08-12|Freudenberg Carl Fa|Filter bellows secured by holding arrangement with height difference|DE102014216459A1|2014-08-19|2016-02-25|Bayerische Motoren Werke Aktiengesellschaft|Transport method and system for flexible materials|
    BR112018014177A2|2016-01-11|2018-12-11|Lm Wp Patent Holding As|"locking element for a wind turbine blade"|
    DE102018112307A1|2018-05-23|2019-11-28|Olbrich Gmbh|Gripper assembly for lifting a semi-rigid semifinished product from a pad and a corresponding method|
    法律状态:
    2016-05-15| REJ| Rejection|Effective date: 20160515 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012104276A|DE102012104276A1|2012-05-16|2012-05-16|Device and method for receiving and transporting individual textile webs or stacks of textile webs|
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