NL2017820B1 - Device and a method for overturning a tire layer - Google Patents

Device and a method for overturning a tire layer Download PDF

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Publication number
NL2017820B1
NL2017820B1 NL2017820A NL2017820A NL2017820B1 NL 2017820 B1 NL2017820 B1 NL 2017820B1 NL 2017820 A NL2017820 A NL 2017820A NL 2017820 A NL2017820 A NL 2017820A NL 2017820 B1 NL2017820 B1 NL 2017820B1
Authority
NL
Netherlands
Prior art keywords
axis
reversing
retaining
receiving surface
platform
Prior art date
Application number
NL2017820A
Other languages
Dutch (nl)
Inventor
Van Tienhoven Jeroen
Johannes Van Assenbergh Karel
Cornelis Meijers Pieter
Albertus Gerhardus Hesselink Ruud
De La Mar Lucien
Original Assignee
Vmi Holland Bv
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 Vmi Holland Bv filed Critical Vmi Holland Bv
Priority to NL2017820A priority Critical patent/NL2017820B1/en
Application granted granted Critical
Publication of NL2017820B1 publication Critical patent/NL2017820B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
    • B29D2030/0038—Handling tyre parts or semi-finished parts, excluding beads, e.g., storing, transporting, transferring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
    • B29D30/16—Applying the layers; Guiding or stretching the layers during application
    • B29D2030/1664—Details, accessories or auxiliary operations not provided for in the other subgroups of B29D30/00
    • B29D2030/1692—Changing the orientation of the layers, e.g. plies, to be applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/30—Applying the layers; Guiding or stretching the layers during application
    • B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
    • B29D2030/3092—Changing the orientation of the layers, e.g. plies, to be applied

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

The invention relates to a device and a method for overturning a tire layer, wherein the device comprises a base, an overturning axis, an overturning platform that is rotatable about the overturning axis from a starting orientation in a starting plane to an overturned orientation above and parallel to a receiving plane, wherein the overturning platform comprises a retaining surface for retaining the tire layer during the overturning, wherein the device further comprises an actuator for providing a relative movement between the retaining surface and the receiving plane in a spacing direction perpendicular to the receiving plane from a floating state in which the retaining surface is spaced apart from the receiving plane in the spacing direction over a first distance and a placement state in which the retaining surface is spaced apart from the receiving plane in the spacing direction over a second distance that is smaller than the first distance.

Description

NLP200427A
Device and a method for overturning a tire layer BACKGROUND
The invention relates to a device and a method for overturning a tire layer, in particular a body ply or a breaker ply. GB 1 457 040 A discloses a method for manufacturing structures of rubberized fabric, in particular breaker structures for pneumatic tires. The method describes the use of a table with a first part and a second part for supporting portions of the rubberized fabric. The portions are super-imposed to form a composite two-layer strip of rubberized fabric by maintaining one of the portions in its initial position on the first part and by rotating the other portion through 180 degrees by rotating the second part of the table about a hinged axis to bring it above the other first part of the table.
Tire layers, such as the rubberized fabric of GB 1 457 040 A, may have different thicknesses for different tire specifications. Also, tire layers may have a variable or uneven thickness across their surface area. The table of GB 1 457 040 A may have difficulty overturning such tire layers accurately over 180 degrees.
It is an object of the present invention to provide a device and a method for overturning a tire layer, wherein the ability to overturn tire layers of different or uneven thickness can be improved.
SUMMARY OF THE INVENTION
According to a first aspect, the invention provides a device for overturning a tire layer, wherein the device comprises a base, an overturning axis, an overturning platform that is rotatable with respect to the base about the overturning axis from a starting orientation in a starting plane at a first side of the overturning axis to an overturned orientation above and parallel to a receiving plane at a second side of the overturning axis opposite to the first side, wherein the overturning platform comprises a retaining surface and one or more retaining elements for retaining the tire layer to said retaining surface during the overturning, wherein the device further comprises an actuator for providing a relative movement between the retaining surface and the receiving plane in a spacing direction perpendicular to the receiving plane from a floating state in which the retaining surface in the overturned orientation of the overturning platform is spaced apart from the receiving plane in the spacing direction over a first distance and a placement state in which the retaining surface in the overturned orientation of the overturning platform is spaced apart from the receiving plane in the spacing direction over a second distance that is smaller than the first distance.
By providing a relative movement between the retaining surface and the receiving plane in the spacing direction, the tire layer can first be positioned above and parallel to the receiving plane prior to the tire layer being placed on a receiving member at the receiving plane. Hence, unlike in the prior art, the thickness of the tire layer does not affect the ability of the overturning platform to overturn said tire layer, as the overturning operation itself is not hindered by a receiving member at the receiving plane. The overturning can be performed at the first distance from the receiving plane at which the tire layer is still spaced apart from and/or not in contact with a receiving member at the receiving plane. It is only after the overturning has been completed that the distance between the retaining surface and the receiving plane is reduced.
In an embodiment thereof the relative movement is a linear or substantially linear movement. By moving linearly, it can be ensured that said movement occurs perpendicular to the receiving plane. Hence, the tire component can remain in the same or substantially the same position with respect to the receiving plane during the relative movement.
In a further embodiment thereof the actuator is arranged for moving the retaining surface towards the receiving plane in the spacing direction. By moving the retaining surface, the receiving plane can remain stationary with respect to the starting plane.
In one embodiment the actuator is operationally connected to the overturning platform for moving said overturning platform as a whole with respect to the receiving plane in the spacing direction. By moving the overturning platform as a whole, the retaining surface thereof can effectively move the tire layer towards the receiving plane.
In another embodiment the device comprises an overturning shaft that extends at the overturning axis and that hingably couples the overturning platform to the base about said overturning axis, wherein the actuator is provided between the overturning shaft and the base for moving the overturning shaft with respect to the receiving plane in the spacing direction. By moving the overturning shaft, the overturning axis can effectively be raised or lowered in the spacing direction. Hence, when the overturning axis is raised with respect to the starting plane, it can be ensured that the retaining surface of the overturning platform becomes situated at the first distance from the receiving plane when the overturning platform is rotated into the overturned orientation.
In an embodiment thereof the overturning shaft is movable in the spacing direction between a first shaft position and a second shaft position that is lower than the first shaft position. In said first shaft position, the retaining surface of the overturning platform is situated at the first distance from the receiving plane, while in the second shaft position, the retaining surface can effectively be lowered to the second distance with respect to the receiving plane.
In an embodiment thereof the overturning axis extends parallel to the receiving plane in both the first shaft position and the second shaft position. Preferably, the actuator comprises one or more actuator elements that are placed between the base and the overturning shaft at spaced apart actuating positions along the overturning axis, wherein the one or more actuator elements are arranged to be operated synchronously for moving the overturning shaft with respect to the receiving plane with the overturning axis remaining parallel to the receiving plane. By keeping the overturning axis parallel, the overturning platform connected to said overturning shaft can be moved accurately with respect to the overturning shaft.
In preferred embodiment the device comprises an overturning drive that is operationally connected to the overturning platform for driving the rotation of the overturning platform about the overturning axis, wherein the overturning drive is arranged for driving the overturning platform over a rotation of 180 degrees from the starting orientation into the overturned orientation. Hence, the tire layer can be fully overturned to arrive at a tire layer contour that is mirrored with respect to the tire layer contour prior to overturning.
In another embodiment the base is arranged for placing the device such that the overturning axis extends horizontally or substantially horizontally. The tire layer can thus be overturned about a horizontal overturning axis.
In another embodiment the base is arranged for placing the device such that the receiving plane extends horizontally or substantially horizontally. The relative movement can thus be provided in a vertical or substantially vertical movement direction.
In another embodiment the starting plane and the receiving plane are parallel. Consequently, overturning the tire layer from the starting plane to the receiving plane can be performed by fully overturning the tire layer, e.g. by rotating the overturning platform about the overturning axis over 180 degrees.
In another embodiment the receiving plane is fixed in the spacing direction with respect to the starting plane. Hence, the position of receiving plane with respect to the starting plane can be very accurate.
In further embodiment the overturning platform comprises a retaining panel and a panel holder for holding said retaining panel with respect to the overturning axis, wherein the retaining surface is provided at a side of the retaining panel facing the receiving plane, wherein the overturning platform comprises one or more first calibration members for calibrating the retaining panel with respect to the receiving plane about a first calibration axis that extends parallel to the receiving plane when the overturning platform is in the overturned orientation. Preferably, the overturning platform comprises one or more second calibration members for calibrating the retaining panel with respect to the receiving plane about a second calibration axis that extends perpendicular to the first calibration axis and parallel to the receiving plane when the overturning platform is in the overturned orientation. By allowing calibration of the retaining panel, and thus of the retaining surface, with respect to the receiving plane, unevenness in the tire layer across the surface area thereof can be absorbed, thereby allowing a more accurate transfer of the tire layer to the receiving plane .
In an embodiment thereof the first calibration axis extends parallel or perpendicular to the overturning axis. Hence, the retaining surface can be calibrated about said first calibration axis while maintaining the positioning of the retaining surface relative to the receiving plane about an axis parallel to the spacing direction .
In a further embodiment thereof the one or more first calibration members comprises a male guide member provided to and/or associated with one of the retaining panel and the panel holder and a female guide member connected to and/or associated with the other of the retaining panel and the panel holder, wherein the male guide member and the female guide member are arranged to interact to guide the retaining panel in a calibration rotation about the first calibration axis. Preferably, the one or more second calibration members comprises a male guide member provided to and/or associated with one of the retaining panel and the panel holder and a female guide member connected to and/or associated with the other of the retaining panel and the panel holder, wherein the male guide member and the female guide member are arranged to interact to guide the retaining panel in a calibration rotation about the second calibration axis. The male and female guide members, preferably pins and slots, can effectively guide the one or more calibration rotations of the retaining panel about the respective calibration axes, while restricting the freedom of movement about other axes, e.g. the vertical axis. Hence, the retaining panel can be calibrated about the calibration axes while maintaining its orientation about the vertical axis relative to the receiving plane.
In a further embodiment thereof the overturning platform comprises one or more biasing members for biasing the retaining panel into a neutral orientation when the overturning platform is in the starting orientation. It can be prevented that the calibration ability of the retaining panel adversely affects the stability of said retaining panel in the starting orientation. In particular, the one or more biasing members can counter the gravitational force acting on the retaining panel in the starting orientation, preferably to keep said retaining panel in a horizontal neutral orientation.
In an alternative embodiment the device comprises a receiving member with a receiving surface for receiving the overturned tire layer from the overturning platform, wherein the receiving surface defines the receiving plane, wherein the actuator is arranged for providing the relative movement between the retaining surface and said receiving surface. Hence, the tire layer can be positioned on the receiving surface once the retaining surface and the receiving surface have been relatively moved into the placement state.
In an embodiment thereof the actuator is arranged for moving the receiving surface towards the retaining surface in the spacing direction. Hence, the overturning platform, once in the overturned orientation, can remain stationary.
In a further embodiment thereof the actuator is arranged for moving the receiving member as a whole with respect to the retaining surface in the spacing direction. By moving the receiving member as a whole, the receiving surface thereof can effectively be moved towards the retaining plane.
According to a second aspect, the invention provides a method for overturning a tire layer with the use of the aforementioned device, wherein the method comprises the steps of: providing the overturning platform in the starting orientation at the starting plane and placing the tire layer on the retaining surface; overturning the overturning platform about the overturning axis from the starting orientation in the starting plane to the overturned orientation above and parallel to the receiving plane; and providing the relative movement between the retaining surface and the receiving plane in the spacing direction from the floating state to the placement state.
Said method and the embodiments thereof have the same advantages as the device according to the first aspect of the invention and its corresponding embodiments. The advantages will therefore not be repeated hereafter for reasons of conciseness.
In an embodiment of the method the relative movement is a linear or substantially linear movement.
In a further embodiment of the method the retaining surface is moved towards the receiving plane in the spacing direction.
In a further embodiment of the method the overturning platform is rotated over a rotation of 180 degrees from the starting orientation into the overturned orientation .
In an alternative embodiment of the method the device comprises a receiving member with a receiving surface for receiving the overturned tire layer from the overturning platform, wherein the receiving surface defines the receiving plane, wherein the relative movement is provided between the retaining surface and said receiving surface .
In an embodiment thereof the receiving surface is moved towards the retaining surface in the spacing direction .
The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications .
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be elucidated on the basis of an exemplary embodiment shown in the attached schematic drawings, in which: figure 1 shows an isometric view of a device for overturning a tire layer according to a first embodiment of the invention during a first step of a method for overturning the tire layer; figure 2 shows the device according to figure 1 during a second step of the method for overturning the tire layer; figures 3A-3D show side views of the device according to figure 1 during the steps of the method for overturning the tire layer; figures 4A and 4B show cross sections of the device in the steps of figures 3C and 3D, respectively; figures 5A and 5B show cross sections in side view and front view, respectively, of the device according to figure 1; and figures 6A-6C show side views of an alternative device for overturning a tire layer according to a second embodiment of the invention during the steps of an alternative method for overturning the tire layer.
DETAILED DESCRIPTION OF THE INVENTION
Figures 1 and 2 show a device 1 for flipping or overturning a tire layer 9 according to a first embodiment of the invention. Said tire layer 9 is preferably a body ply or a breaker ply for building a green tire.
The tire layer 9 in this exemplary embodiment comprises a body 90 of rubber or elastomeric material extending in a longitudinal direction L of the tire layer 9. Said body 90 has a thickness T. The tire layer 9 has a main surface 91 with a parallelogram shape. The parallelogram shape is defined by longitudinal sides 92, 93 extending parallel to the longitudinal direction L at opposite sides of the body 90 and a leading end LE and a trailing end TE at opposite ends of the body 90 in the longitudinal direction L extending at mutually substantially parallel oblique angles with respect to the longitudinal direction L. In the case of a breaker ply, the tire layer 9 typically comprises ferromagnetic or steel reinforcement cords which are embedded in the body 90 under the same oblique angle as the leading end LE and the trailing end TE.
The device 1 can be used to overturn the aforementioned tire layer 9 so that the it is situated upside-down with respect to its initial orientation, as schematically shown with the tire layer contour 94 in dashed lines. Hence, in the case of a parallelogram shaped body 90, the oblique angles of the leading end LE and the trailing end TE with respect to the longitudinal direction L can be inverted or mirrored. This allows for a plurality of tire layers 9 to be produced at one oblique angle, wherein one or more of said tire layers 9 can be overturned at the device 1 according to the invention, e.g. for superimposing tire layers 9 with mutually crossing oblique angles .
As shown in figure 1, the device 1 according to the first embodiment of the invention comprises a base 2 for supporting the device 1 with respect to the fixed world, e.g. a factory floor, and an overturning platform 3 for flipping or overturning the tire layer 9 about an overturning axis A. Preferably, the base 2 is arranged for placing the device 1 in the fixed world, e.g. on a factory floor, such that the overturning axis A extends horizontally or substantially horizontally. The overturning platform 3 comprises a retaining panel 30 that defines a retaining surface 31 for retaining the tire layer 9 to the overturning platform 3 during the overturning and a panel holder 32 for holding the retaining panel 30 with respect to the overturning axis A.
The device 1 further comprises an overturning shaft 4 that extends at and/or along the overturning axis A and that hingably couples the overturning platform 3 to the base 2 about said overturning axis A. The overturning platform 3 is rotatable with respect to the base 2 in an overturning direction F about the overturning axis A from a starting orientation in a starting plane PI at a first side of the overturning axis A, as shown in figure 3A, to an overturned orientation above and parallel to a receiving plane P2 at a second side of the overturning axis A opposite to the first side, as shown in figure 3C. Preferably, the receiving plane P2 extends horizontally or substantially horizontally. In this exemplary embodiment, the starting plane PI is parallel or substantially parallel to the receiving plane P2. As best seen in figure 1, the overturning shaft 4 comprises a shaft body 40 for supporting the overturning platform 3 with respect to the overturning axis A and a shaft holder 41 that is arranged for suspending the shaft body 4 0 with respect to the base 2. The overturning shaft 4 comprises an overturning drive 42 for driving the overturning rotation of the overturning platform 3 in the overturning direction F. The overturning drive 42 is arranged for driving the overturning platform 3 over a rotation of 180 degrees in the overturning direction F from the starting orientation into the overturned orientation.
As shown in figures 1 and 2, the device 1 further comprises an actuator 5 for providing a relative movement M between the retaining surface 31 and the receiving plane P2 in a spacing direction Z perpendicular to the receiving plane P2 from a suspended or floating state, as shown in figure 3C, to a placement state, as shown in figure 3D. Said relative movement M is linear or substantially linear. In the suspended or floating state, as shown in figure 3C, the overturning platform 3 is in the overturned orientation and the retaining surface 31 faces the receiving plane P2 while being spaced apart from said receiving plane P2 in the spacing direction Z over a first distance D1. Said first distance D1 is chosen to be larger or significantly larger than the thickness T of the tire layer 9, such that the tire layer 9, when retained to the overturning platform 3 in the floating state, is spaced apart from the receiving plane P2. In the placement state, as shown in figure 3D, the overturning platform 3 is in the overturned orientation and the retaining surface 31 is spaced apart from the receiving plane P2 in the spacing direction Z over a second distance D2 that is smaller than the first distance D1. Preferably, the second distance D2 is equal to or substantially equal to the thickness T of the tire layer 9.
As best seen in figure 2, the actuator 5 is provided or placed between the overturning shaft 4 and the base 2 for moving the overturning shaft 4 in the spacing direction Z with respect to the receiving plane P2 between a first shaft position and a second shaft position that is lower than the first shaft position. In particular, the actuator 5 is coupled to the shaft holder 41 for moving said shaft holder 41, and thus the shaft body 40, in the spacing direction Z with respect to the base 2. As best seen in figures 1 and 2, the shaft holder 41 comprises one or more guide edges 43 that are coupled to one or more guide elements 21 at a side of the base 2 so as to be slidable in the spacing direction Z along said base 2 as the overturning shaft 4 is moved between the first shaft position and the second shaft position. In this exemplary embodiment, the actuator 5 comprises two actuator elements 51, 52, e.g. pneumatically or hydraulically driven pistons or mechanically driven jacks, at spaced apart actuating positions along the overturning axis A for moving the overturning shaft 4 with respect to the receiving plane P2 with the overturning axis A remaining parallel to the receiving plane P2. Preferably, the actuator elements 51, 52 are operationally coupled, e.g. by a mechanical connection or a control circuit, to ensure that the actuator elements 51, 52 are operated synchronously.
Figures 1, 2 and 3A-3D show a receiving member 6, e.g. a receiving table or a receiving conveyor, for receiving the overturned tire layer 9 from the overturning platform 3 at the receiving plane P2. Said receiving member 6 may form part of the device 1 or may be a part of another station for handling the overturned tire layer 9. The receiving member 6 can share the same base 2 or can be placed separately or individually in the fixed world, e.g. on a factory floor. The receiving member 6 comprises a receiving body 60 with a receiving surface 61 facing towards the retaining surface 31 of the overturning platform 3 when the overturning platform 3 is in the overturned orientation of figure 3C or 3D. The receiving member 6 is placed in the fixed world such that the receiving surface 61 extends in the receiving plane P2. Alternatively, the position of the receiving plane P2 with respect to the starting plane PI is adapted to the position of the receiving surface 61 of the receiving member 6. In this first embodiment of the invention, the receiving plane P2 is chosen at a fixed position or fixed height in the spacing direction Z with respect to the starting plane PI.
Figures 4A and 4B show the overturning platform 3 in cross section, revealing the internal parts of said overturning platform 3. In particular, figures 4A and 4B show that the overturning platform 3 is provided with a retaining element 33 at or near the inside of the retaining panel 30. In this exemplary embodiment, the retaining element 33 is a permanent magnet that is arranged for magnetically attracting ferromagnetic material, e.g. steel reinforcement cords 99, embedded in the body 90 of the tire layer 9. The retaining element 33 is movable in a release direction R from a retaining position close to the retaining panel 30 to a release position spaced apart from the retaining panel 30. In the retaining position, the retaining element 33 is close enough to the retaining panel 30 such that the magnetic attraction between the permanent magnet and tire layer 9 is sufficient to retain the tire layer 9 to the retaining surface 31. In the release position, the retaining element 33 is spaced apart from the retaining panel in the release direction R away from the tire component 9 such that the magnetic attraction becomes insufficient to retain the tire layer 9 to the retaining surface 31. Hence, the tire layer 9 is released from said retaining surface 31 onto the receiving member 6 at the receiving plane P2.
In this exemplary embodiment, the overturning platform 3 is provided with a release mechanism 34 inside the panel holder 32 for moving the retaining member 33 with respect to the retaining panel 30 in the retaining direction R. In this example, the release mechanism 34 is an eccentric drive 35 that converts a rotary output motion of a servo motor 36 into a linear drive of the retaining member 33 in said release direction R.
It will be apparent to one skilled in the art that one or more alternative retaining elements may be used to retain the tire layer 9 to the retaining surface 31 of the overturning platform 3, e.g. retaining elements of the group comprising electromagnets, vacuum retaining elements or mechanical retaining means, such as grippers, pins or fingers .
Figures 5A and 5B schematically show the optional ability of the retaining panel 30 to be automatically calibrated with respect to the receiving plane P2 in response to unevenness and/or variations in thickness in the tire layer 9. Hence, unevenness in the tire layer 9 across the surface area thereof can be absorbed, thereby allowing a more accurate transfer of the tire layer 9 from the overturning platform 3 to the receiving plane P2.
It can be observed from figures 5A and 5B that the retaining panel 30 is rotatable in a first calibration rotation Cl and a second calibration rotation C2 about a first calibration axis SI and a second calibration axis S2, respectively. Said calibration axes SI, S2 extend parallel to the receiving plane P2 when the overturning platform 3 is in the overturned orientation. Preferably, the calibration axes SI, S2 are mutually orthogonal. In this exemplary embodiment, the first calibration axis SI extends parallel to the overturning axis A. The retaining panel 30 is shown in figures 5A and 5B in a neutral orientation in solid lines and in an exemplary non-neutral or offset orientation in dashed lines. In the non-neutral orientation, the retaining panel 30 is rotated about one of the calibration axes SI, S2 over a rotation angle of one or two degrees.
The overturning platform 3 is provided with one or more first calibration members 71 for calibrating the retaining panel 30 with respect to the receiving plane P2 about the first calibration axis SI and one or more second calibration members 72 for calibrating the retaining panel 30 with respect to the receiving plane P2 about the second calibration axis S2. Hence, the retaining panel 30 can be calibrated about said first calibration axis SI and/or said second calibration axis S2 while maintaining the positioning of the retaining panel 30 relative to the receiving plane P2 about an axis parallel to the spacing direction M, e.g. a vertical axis. The calibration members 71, 72 preferably comprises a male guide member, e.g. a pin 73, provided to and/or associated with one of the retaining panel 30 and the panel holder 32 and a female guide member, e.g. a slot 74, provided to and/or associated with the other of the retaining panel 30 and the panel holder 32. Each male guide member 7 3 is arranged to interact with one of the female guide members 74 to guide the retaining panel 30 in one of said calibration rotations Cl, C2 about the respective calibration axis SI, S2.
Preferably, the overturning platform 3 comprises one or more biasing members 75 for biasing the retaining panel 30 into the neutral orientation when the overturning platform 3 is in the starting orientation. In this manner can be prevented that the calibration ability of the retaining panel 30 adversely affects the stability of said retaining panel 30 in the starting orientation. In particular, the one or more biasing members 75, e.g. springs, are arranged between the retaining panel 30 and the panel holder 32 for levelling the retaining panel 30 with respect to the panel holder 32. Hence, the biasing members 75 can counter the gravitational force acting on the retaining panel 30 in the starting orientation, preferably to keep said retaining panel 30 in a horizontal neutral orientation.
The method for overturning the tire layer 9 with the use of the aforementioned device 1 will be elucidated hereafter with reference to figures 1-5B.
Figures 1 and 3A shows the situation in which the overturning platform 3 is in the starting orientation with its retaining surface 31 extending in the starting plane PI. The tire layer 9 has been placed on the retaining surface 31. Preferably, the tire layer 9 is placed with its longitudinal direction L extending parallel or substantially parallel to the overturning axis A. The tire layer 9 is retained to the retaining surface 31 by suitable retaining elements, e.g. the retaining element 33 as shown in figure 4A. In figures 1 and 3A, the overturning shaft 4 is in the lower, second shaft position. Alternatively, the actuator 5 may be operated to move the overturning shaft 4 to the higher, first shaft position prior to the overturning. The tire layer 9 is now ready to be overturned by the overturning platform 3.
Figures 2 and 3B show the situation in which the overturning drive 42 has been activated to rotate the overturning platform 3 over 180 degrees from the starting orientation into the overturned orientation. In figures 2 and 3B, the overturning platform 3 is in the process of overturning the tire layer 9 in the overturning direction F. If the overturning shaft 4 was not already in the higher, first shaft position prior to the overturning, the actuator 5 is now operated during the overturning to at least partially move the overturning shaft 4 from the lower, second shaft position to the higher, first shaft position .
Figure 3C shows the situation in which the overturning platform 3 has been rotated over 180 degrees and has arrived in the overturned orientation. The retaining surface 31 is now up-side-down with respect to the starting orientation in the floating state above and parallel to the receiving plane P2. The overturning shaft 4 is in the higher, first shaft position. As a result, the retaining surface 31 is at the first distance D1 from the receiving plane P2. The tire layer 9 is still retained to the retaining surface 31. As the thickness T of the tire layer 9 is considerably smaller than the first distance Dl, the tire layer 9 remains spaced apart from the receiving plane P2 and does not contact the receiving member 6 at said receiving plane P2. The device 1 is now ready for providing the relative movement M between the retaining surface 31 and the receiving plane P2 for bringing the tire layer 9 into contact with the receiving member 6 at said receiving plane P2.
Figure 3D shows the situation in which the actuator 5 has been operated to provide the relative movement M between the retaining surface 31 and the receiving plane P2 for bringing the tire layer 9 into contact with the receiving member 6 at said receiving plane P2. In particular, the actuator 5 has been operated to lower the overturning shaft 4 in the spacing direction Z from the higher, first shaft position to the lower, second shaft position. As a result, the overturning platform 3 is lowered in the spacing direction Z towards the receiving plane P2 until the retaining surface 31 is at the second distance D2 from the receiving plane P2. At said second distance D2, equaling the thickness T of the tire layer 9, said tire layer 9 contacts the receiving surface 61 at said receiving plane P2. When the tire layer 9 is in contact with the receiving surface 61, the tire layer 9 may be released from the overturning platform 3, thereby effectively transferring the tire layer 9 from the overturning platform 3 to the receiving member 6.
After the release of the tire layer 9, the overturning platform 3 can be returned about the overturning axis A from the overturned orientation to the starting orientation for a next cycle of the aforementioned steps of the method.
Figures 6A-6C show an alternative device 101 for overturning the tire layer 9 according to a second embodiment of the invention. The alternative device 101 differs from the previously discussed device 1 only in that its overturning platform 103 is not movable in the spacing direction Z from the floating state to the placement state. Instead, the alternative device 101 comprises an alternative receiving member 106 with a receiving body 160 and a receiving surface 161 that is movable in the spacing direction Z with respect to said receiving body 160. Hence, the actuator 5 of the previously described embodiment is absent between the overturning shaft 104 and the base 102, allowing the overturning shaft 104 to be connected directly to the base 102. Consequently, the overturning platform 103 is arranged for overturning the tire layer 9 about the overturning axis A from the starting orientation in the starting plane PI, as shown in figure 6A, to the overturned orientation at the first distance D1 above and parallel to the receiving plane P2, as shown in figure 6B, where the overturning platform 103 remains. Subsequently, the receiving surface 161 is moved upwards in the spacing direction Z from the first distance D1 to the second distance D2 towards and into contact with the tire layer 9 at the overturning platform 103. At this point, the tire layer 9 may be released from the overturning member 103 in the same manner as described in relation to the previous embodiment.
It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.
In summary, the invention relates to a device 1, 101 and a method for overturning a tire layer 9, wherein the device 1, 101 comprises a base 2, 102, an overturning axis A, an overturning platform 3, 103 that is rotatable about the overturning axis A from a starting orientation in a starting plane PI to an overturned orientation above and parallel to a receiving plane P2, wherein the overturning platform 3, 103 comprises a retaining surface 31 for retaining the tire layer 9 during the overturning, wherein the device 1, 101 further comprises an actuator 5, 105 for providing a relative movement M between the retaining surface 31 and the receiving plane P2 in a spacing direction Z perpendicular to the receiving plane P2 from a floating state in which the retaining surface 31 is spaced apart from the receiving plane P2 in the spacing direction Z over a first distance D1 and a placement state in which the retaining surface 31 is spaced apart from the receiving plane P2 in the spacing direction Z over a second distance D2 that is smaller than the first distance D1.

Claims (28)

1. Inrichting voor het omkeren van een bandlaag, waarbij de inrichting een basis omvat, een omkeer hartlijn, een omkeer platform dat roteerbaar is ten opzichte van de basis rond de omkeer hartlijn vanuit een start oriëntatie in een startvlak aan een eerste zijde van de omkeer hartlijn naar een omgekeerde oriëntatie boven en evenwijdig aan een ontvangstvlak aan een tweede zijde van de omkeer hartlijn tegenover de eerste zijde, waarbij het omkeer platform een vasthoudoppervlak omvat en een of meer vasthoudelementen voor het vasthouden van de bandlaag aan het vasthoudoppervlak gedurende het omkeren, waarbij de inrichting verder een actuator omvat voor het verschaffen van een relatieve beweging tussen het vasthoudoppervlak en het ontvangstvlak in een tussen afstandsrichting loodrecht op het ontvangstvlak vanuit een zwevende toestand waarin het vasthoudoppervlak in de omgekeerde oriëntatie van het omkeer platvorm op afstand gelegen is van het ontvangstvlak in de tussen afstandsrichting over een eerste afstand en een plaatsingstoestand waarin het vasthoudoppervlak in de omgekeerde oriëntatie van het omkeer platform op afstand gelegen is van het ontvangstvlak in de tussen afstandsrichting over een tweede afstand die kleiner is dan de eerste afstand.A device for reversing a belt layer, the device comprising a base, a reversal axis, a reversal platform that is rotatable relative to the base about the reversal axis from a starting orientation in a starting plane on a first side of the reversal center line to an inverted orientation above and parallel to a receiving surface on a second side of the reversing center line opposite the first side, the reversing platform comprising a retaining surface and one or more retaining elements for retaining the tape layer on the retaining surface during reversing, wherein the apparatus further comprising an actuator for providing relative movement between the holding surface and the receiving surface in an intermediate direction perpendicular to the receiving surface from a floating state in which the holding surface is spaced apart from the receiving surface in the inverted orientation of the reversing platform the between distance direction o far a first distance and a placement state in which the retaining surface in the inverted orientation of the turning platform is remote from the receiving surface in the intermediate distance direction by a second distance that is less than the first distance. 2. Inrichting volgens conclusie 1, waarbij de relatieve beweging een lineaire of in hoofdzaak lineaire beweging is.The device of claim 1, wherein the relative movement is a linear or substantially linear movement. 3. Inrichting volgens conclusie 1 of 2, waarbij de actuator is ingericht voor het bewegen van het vasthoudoppervlak in de richting van het ontvangstvlak in de tussen afstandsrichting.Device as claimed in claim 1 or 2, wherein the actuator is adapted to move the retaining surface in the direction of the receiving surface in the intermediate distance direction. 4. Inrichting volgens een der voorgaande conclusies, waarbij de actuator operationeel verbonden is met het omkeer platform voor het als een geheel bewegen van het omkeer platform ten opzichte van het ontvangstvlak in de tussen afstandsrichting.Device as claimed in any of the foregoing claims, wherein the actuator is operatively connected to the reversing platform for moving the reversing platform as a whole relative to the receiving surface in the intermediate distance direction. 5. Inrichting volgens een der voorgaande conclusies, waarbij de inrichting een omkeer as omvat die zich uitstrekt bij de omkeer hartlijn en die het omkeer platform scharnierbaar koppelt aan de basis rond de omkeer hartlijn, waarbij de actuator is verschaft tussen de omkeer as en de basis voor het bewegen van de omkeer as ten opzichte van het ontvangstvlak in de tussen afstandsrichting.5. Device as claimed in any of the foregoing claims, wherein the device comprises a reversal axis that extends at the reversal axis and which pivotally couples the reversal platform to the base around the reversal axis, the actuator being provided between the reversal axis and the base for moving the reversing axis with respect to the receiving surface in the intermediate direction. 6. Inrichting volgens conclusie 5, waarbij de omkeer as beweegbaar is in de tussen afstandsrichting tussen een eerste as positie en een tweede as positie die lager is dan de eerste as positie.The device of claim 5, wherein the reversing axis is movable in the intermediate direction between a first axis position and a second axis position that is lower than the first axis position. 7. Inrichting volgens conclusie 6, waarbij de omkeer hartlijn zich evenwijdig aan het ontvangstvlak uitstrekt in zowel de eerste as positie als de tweede as positie.The apparatus of claim 6, wherein the reverse axis extends parallel to the receiving surface in both the first axis position and the second axis position. 8. Inrichting volgens conclusie 6 of 7, waarbij de actuator een of meer actuator elementen omvat die zijn geplaatst tussen de basis en de omkeer as op afstand van elkaar gelegen actuator posities langs de omkeer hartlijn, waarbij de een of meer actuator elementen zijn ingericht om synchroon te worden bediend voor het bewegen van de omkeer as ten opzichte van het ontvangstvlak waarbij de omkeer hartlijn evenwijdig blijft ten opzichte van het ontvangstvlak.Device as claimed in claim 6 or 7, wherein the actuator comprises one or more actuator elements which are placed between the base and the reversing axis at spaced apart actuator positions along the reversing axis, the one or more actuator elements being arranged to be operated synchronously for moving the reversal axis with respect to the receiving surface, the reversal axis remaining parallel with respect to the receiving surface. 9. Inrichting volgens een der voorgaande conclusies, waarbij de inrichting een omkeer aandrijving omvat die operationeel verbonden is met het omkeer platform voor het aandrijven van de rotatie van het omkeer platform rond de omkeer hartlijn, waarbij de omkeer aandrijving is ingericht voor het aandrijven van het omkeer platform over een rotatie van 180 graden van de start oriëntatie tot in de omgekeerde oriëntatie.9. Device as claimed in any of the foregoing claims, wherein the device comprises a reversing drive operatively connected to the reversing platform for driving the rotation of the reversing platform around the reversing axis, the reversing drive being arranged for driving the turn platform over a 180 degree rotation from the start orientation to the reverse orientation. 10. Inrichting volgens een der voorgaande conclusies, waarbij de basis is ingericht voor het plaatsen van de inrichting zodanig dat de omkeer hartlijn zich horizontaal of in hoofdzaak horizontaal uitstrekt.Device as claimed in any of the foregoing claims, wherein the base is adapted for placing the device such that the reversal axis extends horizontally or substantially horizontally. 11. Inrichting volgens een der voorgaande conclusies, waarbij de basis is ingericht voor het plaatsen van de inrichting zodanig dat het ontvangstvlak zich horizontaal of in hoofdzaak horizontaal uitstrekt.11. Device as claimed in any of the foregoing claims, wherein the base is arranged for placing the device such that the receiving surface extends horizontally or substantially horizontally. 12. Inrichting volgens een der voorgaande conclusies, waarbij het startvlak en het ontvangstvlak evenwijdig zijn.Device as claimed in any of the foregoing claims, wherein the starting surface and the receiving surface are parallel. 13. Inrichting volgens een der voorgaande conclusies, waarbij het ontvangstvlak gefixeerd is in de tussen afstandsrichting ten opzichte van het startvlak.Device as claimed in any of the foregoing claims, wherein the receiving surface is fixed in the intermediate distance direction relative to the starting surface. 14. Inrichting volgens een der voorgaande conclusies, waarbij het omkeer platform een vasthoudpaneel omvat en een paneelhouder voor het vasthouden van het vasthoudpaneel ten opzichte van de omkeer hartlijn, waarbij het vasthoudoppervlak is verschaft aan een zijde van het vasthoudpaneel dat gericht is naar het ontvangstvlak, waarbij het omkeer platform een of meer eerste kalibratie delen omvat voor het kalibreren van het vasthoudpaneel ten opzichte van het ontvangstvlak rond een eerste kalibratie hartlijn die zich evenwijdig aan het ontvangstvlak uitstrekt wanneer het omkeer platform in de omgekeerde oriëntatie is.An apparatus according to any one of the preceding claims, wherein the reversing platform comprises a retaining panel and a panel holder for retaining the retaining panel relative to the reversing axis, the retaining surface being provided on one side of the retaining panel facing the receiving surface, wherein the reversing platform comprises one or more first calibration portions for calibrating the retaining panel relative to the receiving surface about a first calibration axis that extends parallel to the receiving surface when the reversing platform is in the reverse orientation. 15. Inrichting volgens conclusie 14, waarbij het omkeer platform een of meer tweede kalibratie delen omvat voor het kalibreren van het vasthoudpaneel ten opzichte van het ontvangstvlak rond een tweede kalibratie hartlijn die zich loodrecht op de eerste kalibratie hartlijn en evenwijdig aan het ontvangstvlak uitstrekt wanneer het omkeer platform in de omgekeerde oriëntatie is.The apparatus of claim 14, wherein the reversing platform comprises one or more second calibration portions for calibrating the retaining panel relative to the receiving surface about a second calibration centerline extending perpendicular to the first calibration centerline and parallel to the receiving surface when the platform is in the reverse orientation. 16. Inrichting volgens conclusie 14 of 15, waarbij de eerste kalibratie hartlijn zich evenwijdig of loodrecht op de omkeer hartlijn uitstrekt.Device as claimed in claim 14 or 15, wherein the first calibration axis extends parallel or perpendicular to the reverse axis. 17. Inrichting volgens een der conclusies 14-16, waarbij de een of meer kalibratie delen een mannelijk geleidingsdeel omvat verschaft aan en/of behorend bij een van het vasthoudpaneel en de paneelhouder en een vrouwelijk geleidingsdeel verbonden met en/of behorend bij de andere van het vasthoudpaneel en de paneelhouder, waarbij het mannelijke geleidingsdeel en het vrouwelijke geleidingsdeel zijn ingericht teneinde samen te werken teneinde het vasthoudpaneel te geleiden in een kalibratie rotatie rond de eerste kalibratie hartlijn.The device of any one of claims 14-16, wherein the one or more calibration members comprises a male guide member provided to and / or associated with one of the retaining panel and the panel holder and a female guide member connected to and / or associated with the other of the retaining panel and the panel holder, wherein the male guide member and the female guide member are adapted to cooperate to guide the retainer panel in a calibration rotation about the first calibration axis. 18. Inrichting volgens conclusie 15, waarbij de een of meer tweede kalibratie delen een mannelijk geleidingsdeel omvat verschaft aan en/of behorend bij een van het vasthoudpaneel en de paneelhouder en een vrouwelijk geleidingsdeel verbonden met en/of behorend bij de andere van het vasthoudpaneel en de paneelhouder, waarbij het mannelijk geleidingsdeel en het vrouwelijke geleidingsdeel zijn ingericht teneinde samen te werken teneinde het vasthoudpaneel in een kalibratie rotatie rond de tweede kalibratie hartlijn te geleiden.The device of claim 15, wherein the one or more second calibration members comprises a male guide member provided to and / or associated with one of the retaining panel and the panel holder and a female guide member connected to and / or associated with the other of the retaining panel and the panel holder, wherein the male guide member and the female guide member are adapted to cooperate to guide the retainer panel in a calibration rotation around the second calibration axis. 19. Inrichting volgens een der conclusies 14-18, waarbij het omkeer platform een of meer voorbelaste delen omvat voor het voorbelasten van het vasthoudpaneel in een neutrale oriëntatie wanneer het omkeer platform in de start oriëntatie is.The apparatus of any one of claims 14-18, wherein the reversing platform comprises one or more preloaded portions for preloading the retaining panel in a neutral orientation when the reversing platform is in the start orientation. 20. Inrichting volgens conclusie 1, waarbij de inrichting een ontvangstdeel omvat met een ontvangstoppervlak voor het ontvangen van de omgekeerde bandlaag van het omkeer platform, waarbij het ontvangstoppervlak het ontvangstvlak bepaalt, waarbij de actuator is ingericht voor het verschaffen van de relatieve beweging tussen het vasthoudoppervlak en het ontvangstoppervlak.The apparatus of claim 1, wherein the apparatus comprises a receiving portion with a receiving surface for receiving the reverse band layer from the reversing platform, the receiving surface defining the receiving surface, the actuator being adapted to provide relative movement between the holding surface and the receiving surface. 21. Inrichting volgens conclusie 20, waarbij de actuator is ingericht voor het bewegen van het ontvangstoppervlak in de richting van het vasthoudoppervlak in de tussen afstandsrichting.Device as claimed in claim 20, wherein the actuator is adapted to move the receiving surface in the direction of the holding surface in the intermediate distance direction. 22. Inrichting volgens conclusie 20 of 21, waarbij de actuator is ingericht voor het als een geheel bewegen van het ontvangstdeel ten opzichte van het vasthoudoppervlak in de tussen afstandsrichting.Device as claimed in claim 20 or 21, wherein the actuator is adapted to move the receiving part as a whole relative to the retaining surface in the intermediate distance direction. 23. Werkwijze voor het omkeren van een bandlaag met gebruikmaking van de inrichting volgens conclusie 1, waarbij de werkwijze de stappen omvat van: het verschaffen van het omkeer platform in de start oriëntatie bij het startvlak en het plaatsen van de bandlaag op het vasthoudoppervlak; het omkeren van het omkeer platform rond de omkeer hartlijn vanuit de start oriëntatie in het startvlak naar de omgekeerde oriëntatie boven en evenwijdig aan het ontvangstvlak; en het verschaffen van de relatieve beweging tussen het vasthoudoppervlak en het ontvangstvlak in de tussen afstandsrichting vanuit de zwevende toestand naar de plaatsingstoestand.The method of reversing a tape layer using the device of claim 1, wherein the method comprises the steps of: providing the reversing platform in the start orientation at the starting surface and placing the tape layer on the holding surface; reversing the reversing platform around the reversing axis from the start orientation in the start plane to the reverse orientation above and parallel to the receiving plane; and providing the relative movement between the holding surface and the receiving surface in the intermediate direction from the floating state to the placement state. 24. Werkwijze volgens conclusie 23, waarbij de relatieve beweging een lineaire of in hoofdzaak lineaire beweging is.The method of claim 23, wherein the relative motion is a linear or substantially linear motion. 25. Werkwijze volgens conclusie 23 of 24, waarbij het vasthoudoppervlak bewogen wordt in de richting van het ontvangstvlak in de tussen afstandsrichting.The method of claim 23 or 24, wherein the holding surface is moved in the direction of the receiving surface in the intermediate distance direction. 26. Werkwijze volgens een der conclusies 23-25, waarbij het omkeer platform geroteerd wordt over een rotatie van 180 graden vanuit de start oriëntatie tot in de omgekeerde oriëntatie.The method of any one of claims 23-25, wherein the turning platform is rotated through a 180 degree rotation from the start orientation to the reverse orientation. 27. Werkwijze volgens conclusie 23, waarbij de inrichting een ontvangstdeel omvat met een ontvangstoppervlak voor het ontvangen van de omgekeerde bandlaag van het omkeer platform, waarbij het ontvangstoppervlak het ontvangstvlak bepaalt, waarbij de relatieve beweging wordt verschaft tussen het vasthoudoppervlak en het ontvangstoppervlak,The method of claim 23, wherein the device comprises a receiving part with a receiving surface for receiving the reverse band layer from the reversing platform, the receiving surface defining the receiving surface, the relative movement being provided between the holding surface and the receiving surface, 28. Werkwijze volgens conclusie 27, waarbij het ontvangstoppervlak bewogen wordt in de richting van het vasthoudoppervlak in de tussen afstandsrichting. -o-o-o-o-o-o-o-o-The method of claim 27, wherein the receiving surface is moved in the direction of the holding surface in the intermediate distance direction. -o-o-o-o-o-o-o-
NL2017820A 2016-11-18 2016-11-18 Device and a method for overturning a tire layer NL2017820B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457040A (en) * 1973-01-29 1976-12-01 Pirelli Method for manufacturing structures of rubberized fabric in particular breaker structures of pneumatic tyres
FR2699901A1 (en) * 1992-12-24 1994-07-01 Formica Sa Pick-up and handling unit for sheet from top of pile
US6461100B1 (en) * 1997-01-17 2002-10-08 The Goodyear Tire & Rubber Company Method and apparatus for removing tire treads from storage device
US20040011454A1 (en) * 2000-06-29 2004-01-22 Gianni Mancini Method and plant for manufacturing a belt structure, a belt package, and a crown structure of a green tire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457040A (en) * 1973-01-29 1976-12-01 Pirelli Method for manufacturing structures of rubberized fabric in particular breaker structures of pneumatic tyres
FR2699901A1 (en) * 1992-12-24 1994-07-01 Formica Sa Pick-up and handling unit for sheet from top of pile
US6461100B1 (en) * 1997-01-17 2002-10-08 The Goodyear Tire & Rubber Company Method and apparatus for removing tire treads from storage device
US20040011454A1 (en) * 2000-06-29 2004-01-22 Gianni Mancini Method and plant for manufacturing a belt structure, a belt package, and a crown structure of a green tire

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