Device and method for disassembling a mattress
Patent Information
- Application Number
- EP2024812565
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-10-31
- Filing Date
- 2024-10-29
- Publication Date
- 2026-09-09
AI Technical Summary
Existing mattress recycling technologies face challenges in efficiently separating the exterior envelope (coutil) from the inner core (soul) of a mattress due to the complexity of the mattress shape and the need to manage multiple parameters during the separation process.
A device and process for disassembling a mattress, featuring a two-part cutting station and a separation station with mobile jaw pliers that grab and separate the coutil from the soul, utilizing a support surface with a rim and clamps to facilitate the separation operation.
The solution effectively separates the coutil from the soul of the mattress, overcoming the difficulties of the existing technologies by providing a systematic and efficient method that reduces manual intervention and improves the recycling process.
Smart Images
Figure IB2024060655_08052025_PF_FP_ABST
Abstract
Description
Description Title of the invention: DEVICE AND METHOD FOR DISASSEMBLING A MATTRESS [0001 ^FIELD OF APPLICATION OF THE INVENTION
[0002] The present invention relates to the field of mattress recycling and in particular to adaptations allowing the outer envelope, hereinafter called ticking, to be separated under the best conditions from the rest of the mattress, hereinafter called core.
[0003] DESCRIPTION OF THE PRIOR ART
[0004] For recycling purposes, there are a number of methods and devices in the prior art for disassembling a used mattress in order to break it down into different parts that can be recycled.
[0005] Document JP2000-33599 describes, for example, a device for automatically disassembling a mattress containing springs, which separates non-combustible materials such as springs from combustible materials such as ticking. This device is in the form of a machine equipped with several functional means with a means for cutting the cover, a means for separating the cover peeling the cut cover and a rotation means rotating the mattress. The method provides for movements of the mattress between the cutting means, the separating means and the rotation means allowing different parts to be cut and separated.
[0006] This document describes for the cutting means, a diagonal cut of the cover on the largest face of the mattress, and for the separation means the use of gripping means pulling a cut part of ticking while the rest of the mattress is held.
[0007] We understand that the successful completion of the separation operation depends on numerous parameters such as:
[0008] -the cut-out part of the seized ticking,
[0009] - its orientation relative to the pulling axis, and
[0010] - the orientation of the notches made in relation to the two previous parameters.
[0011] Another separation solution appears in document WO2015080580 which describes drive rollers between which the mattress passes and which are equipped with radial projections which come into punctually contact with the cut ticking in order to detach it from the core of the mattress.
[0012] We understand that the successful completion of the separation operation depends on numerous parameters such as:
[0013] - the ability of projections to associate with the ticking and to dissociate from it in the same movement,
[0014] - the ability of the projections in their rotational movement to detach the ticking from the core of the mattress despite the engagement of the edges of the core of the mattress in the corners of the ticking,
[0015] - the orientation of the notches.
[0016] The parallelepiped shape of the mattresses and the fact that the ticking closely follows the shape of the mattress core contribute to the difficulty of the separation operation.
[0017] In practice, the applicant found that the separation operation was ultimately carried out manually due to the difficulty in controlling the numerous parameters for the implementation of existing automatic means.
[0018] BRIEF DESCRIPTION OF THE INVENTION
[0019] Having noted this, the applicant carried out research in order to propose an optimized solution for disassembling a mattress for recycling purposes.
[0020] One of the objectives of this research was to propose an optimized solution for separating the ticking and the core of the mattress.
[0021] This research resulted in the design and production of a device for disassembling a mattress comprising a core wrapped in ticking, the device being of the type involving an operation of cutting the ticking and an operation of separating the ticking from the core of the mattress,
[0022] the core of the mattress forming a parallelepiped with edges, a shape taken up by the ticking which envelops it, adopts the same edges,
[0023] the device comprising a station for cutting the ticking into two parts and a separation station receiving the mattress wrapped in its cut ticking,
[0024] the separation station comprising clamps with movable jaws which grip the ticking for separation purposes.
[0025] According to the invention, the device is remarkable in that the separation station comprises:
[0026] a support surface on which the mattress wrapped in its cut-out ticking is positioned, said support surface being equipped with an edge, the positioning of the mattress bringing a portion of the mattress beyond said edge,
[0027] at least one clamp moving to
[0028] grip one of the parts of the ticking surrounding the portion of the mattress placed beyond the edge,
[0029] exert traction on the gripped part of the ticking and
[0030] move so that the pulled part of the ticking rests and bends against said edge when pulled,
[0031] said clamps being grouped according to three mobile gripping means:
[0032] - a first means which, depending on the clamps used, clamps the core of the mattress with the ticking for the purpose of retaining it in position or clamps and removes, by cooperating with said edge, a first cut-out part of the ticking with which they are engaged,
[0033] - a second means which, placed on the other side of the mattress in relation to the first means, pinches and removes the other cut part of ticking by pinching the ticking,
[0034] - a third means which, arranged on the other side of the mattress in relation to the first means, pinches the core of the mattress for the purposes of retention or movement.
[0035] This feature is particularly advantageous in that it facilitates the separation operation by exerting a peeling stress, that is to say by pressing the gripped ticking part against the edge during traction while this ticking part being released is also pressing on the support surface. This edge on which the ticking part rests and bends redirects the stresses undergone and facilitates separation.
[0036] The use of three moving means ensures the proper separation of the ticking from the mattress core.
[0037] Alternatively, they serve as support or a means of retaining the mattress as a whole, the ticking alone, or the core alone.
[0038] The implementation of several mobile pinching means makes it possible to select the parts to be pinched or retained according to the chronology of the chosen operations.
[0039] The mattress can adopt several orientations but according to another particularly advantageous characteristic of the invention, said support surface is constituted by the upper surface of a drive conveyor on which the mattress wrapped in its cut ticking rests horizontally and said edge is constituted by the edge of a shelf arranged as an extension of said conveyor and transversely to its direction of advance.
[0040] According to another particularly advantageous characteristic of the invention, the clamps of the first and second gripping means are movable and positioned so that their jaws close on the edge of the mattress and / or the ticking. The proposed mobility and the selection of the clamps implemented thus make it possible to select the parts to be clamped.
[0041] According to another particularly advantageous characteristic of the invention, said first gripping means is equipped with a horizontal pivot axis parallel to the longitudinal axis of the edge of the ticking retained by the clamps and a rotational drive means for moving the gripped edge of the ticking from a position in contact with the core of the mattress to a position spaced from the core of the mattress and orienting the ticking to place it in contact with the edge.
[0042] According to another particularly advantageous characteristic of the invention, said rotation of the first gripping means drives the gripped ticking edge backwards so as to partially turn over the gripped cut-out part of the ticking. This turning over associated with the pressing against the edge makes it possible to implement the peeling movement guaranteeing good separation.
[0043] According to another particularly advantageous characteristic of the invention, the ticking cutting station uses a rotating blade which cuts along a cutting line positioned longitudinally at the edge of the mattress so as to create two parts of ticking connected to each other at one end and separable at the other end.
[0044] This last end is positioned with the mattress beyond the edge while the uncut portion of ticking is positioned at the opposite edge.
[0045] Such a cut has the advantage of allowing separation while treating the ticking as a single piece despite the cut.
[0046] According to another particularly advantageous characteristic of the invention, the ticking cutting station comprises a support surface on which one face of the mattress is positioned and a weight which is positioned punctually on the opposite face of the mattress during the cutting of the ticking. This weight arranged on the upper face makes it possible to provide the mattress with sufficient inertia so that it does not move when it is subjected to the stress of cutting without preventing access to its edges.
[0047] According to another particularly advantageous characteristic of the invention, the device comprises a final cutting station cutting the core of the mattress once separated from the ticking, said final cutting station comprising at least one rotating circular saw blade associated with lateral flanges fixed relative to the blade and protecting almost the entire surface of the latter by leaving in contact with the material to be cut only a portion of the single cutting edge projecting relative to the flanges.
[0048] This feature solves problems when a metal blade is used to cut a soft synthetic material at high speed. Indeed, the material tends to melt in the cut area, which can pose a risk of deposits and jamming of the cutting operation. The presence of flanges prevents too large a surface area of the high-speed moving part from being in contact with the cut material. Said flanges also act as a spacer between the cut parts. Finally, they act as a scraper cleaning the cutting surface in the event of molten material deposits.
[0049] The invention also relates to the method implemented by the device described above.
[0050] According to another particularly advantageous characteristic of the invention, this method of disassembling a mattress comprising a core wrapped in a, said method comprising
[0051] a ticking cutting operation carried out by a ticking cutting station,
[0052] an operation of separating the ticking and the core carried out by a separation station as described above,
[0053] the mattress having a translational movement whose direction of advance defines for the mattress a front end and a rear end of the mattress.
[0054] The method of the invention is remarkable in that it comprises the following operations:
[0055] - cutting of the ticking by the ticking cutting station along a cutting line passing through the edge of the mattress, dividing the ticking into two parts,
[0056] - moving the mattress with the cut ticking from the ticking cutting station to the separation station,
[0057] - pinching of a first part of the ticking by a first gripping means and of the associated portion of mattress core,
[0058] - pinching by a second gripping means arranged opposite the first gripping means relative to the mattress, of the second part of the ticking,
[0059] - moving the second gripping means for the purpose of separating the second ticking part from the associated mattress core portion,
[0060] - pinching by a third gripping means arranged opposite the first gripping means relative to the mattress, of the front end of the mattress core freed from the ticking,
[0061] - partial opening of the first gripping means for the purpose of releasing the core and maintaining the pinching of the first part of the ticking,
[0062] - moving the first gripping means for the purpose of separating the first part of the ticking from the associated portion of the mattress core and pressing against the edge,
[0063] - forward movement of the third gripping means for the purpose of releasing the entire core of the mattress from the two parts of ticking respectively held by the first and second gripping means,
[0064] - evacuation of the ticking,
[0065] - moving the mattress core out of the separation station.
[0066] According to another particularly advantageous characteristic of the invention, the movement of the second gripping means for the purpose of separating the second ticking part from the associated mattress core portion is accompanied by a rearward movement releasing the mattress core from the second ticking part.
[0067] According to another particularly advantageous characteristic of the invention, the grippers of the first gripping means are controlled so as to grip the ticking and the core while the other part of the ticking is being gripped by the second gripping means.
[0068] According to another particularly advantageous characteristic of the invention, the movement of the first gripping means for the purpose of separating the first ticking part from the associated mattress core portion consists of a rotational movement of the clamps turning the edge of the ticking part gripped against the edge.
[0069] The fundamental concepts of the invention have just been set out above in their most basic form. Other details and characteristics will emerge more clearly on reading the description which follows and with reference to the appended drawings, giving by way of non-limiting example, an embodiment of a device in accordance with the invention.
[0070] BRIEF DESCRIPTION OF THE DRAWINGS
[0071] [Fig.1] is a schematic drawing of an exterior perspective view of an embodiment of a disassembly device according to the invention;
[0072] [Fig.2] is a schematic drawing of an external perspective view of an embodiment of the unstacking station equipping the device of Figure 1;
[0073] [Fig.3] is a schematic drawing of an exterior perspective view of an embodiment of the ticking cutting station equipping the device of Figure 1;
[0074] [Fig.4] is a schematic drawing of an exterior top view of the ticking cutting station illustrating the stroke of the cutting module;
[0075] [Fig.5] is a schematic drawing of an exterior perspective view of an embodiment of the separation station equipping the device of Figure 1;
[0076] [Fig.6a] to [Fig.6o] are schematic drawings of partial side views of the separation station illustrating chronologically the different phases of the separation operation;
[0077] [Fig.7] is a schematic drawing of a partial exterior perspective view of a detail of the separation station showing the lower gripping means;
[0078] [Fig.8] is a schematic drawing of an exterior perspective view of the final cutting station;
[0079] [Fig.9] is a schematic drawing of an exterior side view of the cutting table of the final cutting station;
[0080] [Fig.10] is a schematic drawing of a detail perspective view of the cutting table with the saw retracted;
[0081] [Fig.11] is a schematic drawing of a detail perspective view of the cutting table with the saw not retracted.
[0082] DESCRIPTION OF A PREFERRED EMBODIMENT
[0083] As illustrated by figure 1, the device referenced D as a whole constitutes a line for disassembling mattresses M which are received at the input of line E to undergo a plurality of operations and exit in a disassembled manner with a mattress core A at output S and a ticking (not illustrated in this figure) evacuated by an additional output Sa.
[0084] According to the preferred but non-limiting embodiment illustrated, this disassembly line comprises the following stations:
[0085] - at entrance E, a reception area 100 for mattresses M associated with an unstacking station 200 which can be used as a substitute or in addition,
[0086] - a 300 ticking cutting station,
[0087] - a separation station 400 between the cut ticking and the core of the mattress with which an additional outlet Sa is associated for the ticking,
[0088] - a so-called final cutting station 500 of the core A of the mattress separated from the ticking (if this core can be cut and its cutting is desired),
[0089] - at output S, an output zone 600 of the cores A cut or not.
[0090] A plurality of motorized movement means such as conveyor belts move the mattress M from one station to another according to the arrows F1. The mattress M moves flat horizontally, its direction of advance according to the arrow F1 defining a front end and a rear end.
[0091] Mattress core A and its ticking are subject to other operations intended for their recycling which are not illustrated here.
[0092] As illustrated in Figure 2, the unstacking station 200 comprises a receiving surface 211 constituted by the upper face of a horizontal conveyor belt 210 on which is received a mattress M coming either from the receiving zone 100 located upstream or from a stack of mattresses M arranged laterally nearby.
[0093] In order to pass the mattresses M from this stack to the conveyor belt 210, the unstacking station 200 comprises a rigid frame 220 made up of profiles which, forming a gantry above the conveyor belt 200 and the stack, support above the stack, a pair of transverse rails 230 on which moves a spreader 240 equipped with clamps 250 (four in number according to the preferred but non-limiting embodiment illustrated).
[0094] This 240 spreader is equipped with guides and motorized means ensuring its horizontal movements on the 230 rails according to the double arrow F2 and its vertical movements according to the double arrow F3. The operation is as follows:
[0095] -The 240 spreader is positioned above the stack (double arrow F2),
[0096] -It descends (double arrow F3) to put its clamps 250 in contact with the upper surface of the ticking 700 still surrounding the mattress M on top of the pile,
[0097] -the clamps 250 close and grasp said ticking 700,
[0098] - the 240 spreader bar rises (double arrow F3) to move the mattress M away from the top of the pile,
[0099] - the spreader 240 moves laterally (double arrow F2) to position the mattress M above the reception surface 211,
[0100] - the spreader 240 descends to place the mattress M on said surface 211,
[0101] - the 250 clamps open releasing the mattress M,
[0102] - The 240 lever rises to find itself in the position illustrated in figure 2.
[0103] Associated with the receiving surface 211, thrust means 260 associated with a fixed vertical wall 270 arranged in opposition, participate by exerting a point transverse constraint according to the arrow F4, in the straightening of the longitudinal edges of the mattress M received and found positioned between said means 260 and the wall 270.
[0104] Likewise, the presence of a transverse wall 280 which can be raised according to arrow F5, which occasionally opposes the movement, associated with a setting in forward movement (arrow F1) of the conveyor belt 210 participates in exerting axial stress, in the straightening of the front transverse edge of the received mattress M.
[0105] The lifting of the wall 280 (arrow F5) and the continuation of the forward movement of the conveyor belt 210 leads the mattress M to enter the cutting station 300.
[0106] As illustrated by Figures 3 and 4, the cutting station 300 comprises a horizontal support surface 311 constituted by the upper surface of a conveyor belt 310. A frame of profiles 320 provides support and guidance for a motorized cutting module 330 which will provide a cutting operation of ticking 700.
[0107] This motorized cutting module uses a blade 331 rotating along a vertical axis and associated with a support pad 332. This blade 331 is arranged at the lower end of a vertical arm 333 which is guided and set in motion on two axes according to the arrows F6 and F7 in order to follow, with the pad 332 resting against the mattress M introduced into the cutting station, the cutting path T. For the following mattress, the blade 331 has its starting point of the cutting path defined by its arrival point of the previous cutting operation, which is why the path T is illustrated associated with arrows going in both directions.
[0108] To do this, the vertical arm 333 has its upper end which moves in horizontal transverse translation (arrow F7) along a transverse guide beam 334 which itself moves in longitudinal horizontal translation (arrow F6) along a pair of longitudinal rails 321 carried by the frame 320 above the support surface 311. The shoe 332 and the rotating blade 331 remain in contact with the mattress M throughout the duration of the cut.
[0109] To keep the mattress M in position under the stress of the blade 331 and the pad 332, a mobile weight 340 formed here by a plate is arranged punctually on the upper face of the mattress M. To do this, according to the embodiment illustrated, it is positioned at the end of a flexible lifting link connected to an arrow and whose winding control allows the weight 340 to be placed on the mattress M for cutting or to be lifted for the mattress entry or exit phases.
[0110] As illustrated, the tracking by the rotating blade of the cutting path T ensures the creation of a separation notch at the edges of the mattress completely separating the ticking 700 into two parts, an upper part 710 and a lower part 720, on three edges (the front and side edges of the mattress) and leaving an uncut portion on the rear edge. The mattress M remains in place during this phase due to the inertia of the weight 340 placed on it.
[0111] Once the cutting path has been followed, the weight 340 is lifted and the mattress M with the ticking 700 still in place but cut, is evacuated by the conveyor belt 310 according to the arrow F1 to enter the separation station 400.
[0112] As illustrated by Figures 5, and 6a to 6o, the separation station 400 comprises two upper belt conveyors 410 and 420, separate but arranged in line with one another. These two conveyors 410 and 420 each form an upper support and bearing surface 411 and 421 for the mattress M with the ticking 700 cut out for the conveyor 410 and the core A alone for the conveyor 420. The ticking 700 separated from said core A passes through the space 430 separating the first two conveyors 410 and 420 to rest on a conveyor belt 440 arranged under said space 430. This lower conveyor belt 440 conveys the detached ticking 700 according to the arrow F8 in the opposite direction to the arrow F1 towards a transverse discharge conveyor 450 conveying F1 according to the arrow F9 perpendicular to the axes of the movements represented by the arrows F8 and opening onto the additional outlet Sa allowing the operator to recover the ticking 700.
[0113] These conveyors and conveyor belts are associated with a frame 460 supporting and guiding the movements of two upper gripping means 470 and 480 moving above said support surfaces 411 and 421. Said gripping means being equipped with motorized jaw grippers.
[0114] A lower gripping means 490 is positioned at the end of travel of the first conveyor 410 and moves partly in the space 430 as well as under the conveyor 410. This front end of the conveyor 410 is extended by a transverse shelf 412 whose external edge will serve as a support surface for the lower portion 720 of the ticking 700 to facilitate its release from the core A. This lower gripping means 490 is equipped with motorized jaw clamps, said clamps being separately controllable. It is illustrated in more detail by Figure 7, where the lower gripping means 490 is in the form of a mobile ramp supporting clamps 810 intended for the ticking 700 and clamps 820 for the core A of the mattress M. The behavior of these clamps and the movement of the gripping means opposite the transverse shelf 412 are described below.
[0115] The separation operation implemented by the separation station and the various functional sub-assemblies involved will be described below in support of the chronological sequence of figures 6a to 6o. These operations are controlled by a control module (not shown). The motorization of the clamps is implemented by pneumatic energy.
[0116] As illustrated by Figure 6a, the mattress M wrapped in the cut ticking 700 comes from the cutting station 300 and is set in motion (arrow F1) by the conveyor 410 to come into abutment against the lower gripping means 490. More precisely, according to the non-limiting embodiment illustrated, the area of the lower edge of the front end of the mattress M and therefore of the ticking 700 comes into abutment on the upper jaw of the clamps 810 and 820 in the open position equipping said lower gripping means 490. A dedicated stop can, according to an embodiment not illustrated, assume this function.
[0117] This movement of the mattress brings the front portion of the mattress beyond said transverse edge 412 which will allow the gripping means to come into contact with the lower and upper edges of this front portion of the mattress.
[0118] As illustrated by figure 6b, once the mattress M has reached the stop, the conveyor 410 stops and the lower gripping means 490 moves away from the mattress M according to the arrow F10.
[0119] As illustrated in Figure 6c, the jaws of different pliers 810 equipping the lower gripping means 490 close on the only transverse lower seam of the lower part of the ticking 720.
[0120] As illustrated by figure 6d, a first upper gripping means 470 moving associated with a gantry 461 on beams 462 supported by the frame 460 comes to bear by means of a pad 471 on the upper surface of the mattress M and therefore of the upper part of the ticking 710 by descending from a high position to a low position according to the arrow F11.
[0121] The 820 clamps, which are always open, ensure an upward translation according to arrow F12 in order to guarantee correct positioning before closing.
[0122] As illustrated by figure 6e, the first upper gripping means 470 moves to slide the pad 471 in translation according to the arrow F13 in the opposite direction to the arrow F1 in order to press a vertical projection 472 associated with the pad 471 against the front edge of the mattress M. This press positions the clamps 830 equipping the first upper gripping means 470.
[0123] As illustrated in Figure 6f, the jaws of the grippers 830 of the first upper gripping means 470 close on the front transverse upper edge of the upper ticking portion 710.
[0124] As illustrated in Figure 6g, the jaws of the clamps 820 of the lower gripping means 490 close on the lower part of the mattress M to clamp the lower part of ticking 720 already held by the clamps 810 which have remained closed and the corner of the mattress M after the first upper gripping means 470 rises according to the arrow F14, driving the front end of the upper part of ticking 710 upwards.
[0125] As illustrated by Figure 6h, the lower gripping means 490 maintains its retention with its two sets of clamps 810 and 820 while the first upper gripping means 470 moves in translation towards the rear according to the arrow F15 detaching the upper part of the ticking 710 from the upper surface of the core A of the mattress M.
[0126] As illustrated in Figure 6i, the first upper gripping means 470 stops once the core A is approximately halfway cleared. The second upper gripping means 480, associated with a gantry 463 on the beams 462 supported by the frame 460, moves in translation according to the arrow F16 and from a high position to a low position according to the arrow F17 to bear by means of a pad 481 on the upper surface of the core A released from the ticking 700. This bearing makes it possible to position the open clamps 840 equipping said gripping means 480 at the level of the front transverse edge of the core A.
[0127] As illustrated by figure 6j, the first upper gripping means 470 remains in place, the jaws of the clamps 840 of the second gripping means 480 close on the front transverse upper edge of the core A while the clamps 820 of the lower gripping means 490 open leaving only the clamps 810 engaged with the front edge of the lower part of the ticking 720 which exert a downward pull according to the arrow F18.
[0128] As illustrated in Figure 6k, with the two upper gripping means 470 and 480 remaining in place, the lower gripping means 490 performs a rearward movement (arrow F19) and a clockwise rotation (arrow F20) driving the transverse edge of the lower ticking portion 720 downward and rearward.
[0129] As illustrated in Figure 6I, the first upper gripping means 470 carrying with it the upper portion of ticking 720 continues its translation according to the arrow F15, releasing the entire upper surface of the core A. The lower gripping means 490 continues its translation towards the rear according to the arrow F19, the second upper gripping means 480 drives forward according to the arrow F21 towards the conveyor 420 the core being released from the ticking 700. It appears that the lower portion 720 of the ticking 700 bears on the transverse shelf 412 by folding over it, which facilitates the separation between the ticking 700 and the core A when the end of the ticking is subjected to a rearward pull. The conveyors 410 and 420 participate in this movement.
[0130] As illustrated by figure 6m, the continuation of the different movements leads to the total release of the core A and its passage towards the conveyor 420. The ticking 700 is engaged with the first upper gripping means 470 which returns forward and with the lower gripping means 490 which has continued its translation towards the rear. The ticking 700 does not accumulate on the conveyor 410 due to the movement of the latter leading the ticking to pass into the space 430 separating the conveyors 410 and 420 to be conveyed towards the rear by the lower conveyor 440.
[0131] As illustrated in Figure 6n, the first upper gripping means 470 opens its parts 830 so as to release the retained ticking end 700 which falls into the space 430. Similarly, the clamps 810 of the lower gripping means have opened to release the ticking end 700 which they retained.
[0132] As illustrated in Figure 6o, the various gripping means return to the position illustrated in Figure 6a during the evacuation of the ticking 700 towards the rear and the transverse conveyor belt 450 and the evacuation of the core towards the front by the conveyor 420.
[0133] As illustrated in Figure 1, the disassembly device D comprises a final cutting station 500, details of which are illustrated in Figures 8 to 11.
[0134] As illustrated in Figure 8, this final cutting station 500 is equipped with a pair of belt conveyors 510 and 520 whose upper surface serves as a support surface for the core of the mattress (not shown) coming from the separation station 400. These two belt conveyors 510 and 520 are separated by a cutting table 530.
[0135] As illustrated in Figure 9, this cutting table 530 comprises a support surface 531 arranged substantially at the same level as the upper surface of the conveyors 510 and 520 and equipped with a circular saw 532 rotating in a plane perpendicular to the support surface 531. Here, a little less than half of the disc formed by the saw 532 projects above the support surface 531.
[0136] This circular saw 532 is associated with two lateral flanges which cover almost all of its surface, leaving only a limited angular portion of the cutting edge of the saw 532 projecting and in contact with the material to be cut. The presence of these flanges 533 and 534 makes it possible to solve the problems linked to the melting of the material of the core A at the level of the cut zone.
[0137] As illustrated by the change of position illustrated by figures 9 and 11 to that illustrated by figure 10, the assembly formed by the saw 532 and by the two flanges 533 and 534 is capable of retracting under the support surface 531 of the cutting table 530 when cutting is not desired or possible by passing through a slot 535 provided for this purpose in the surface 531.
[0138] It is understood that the device which has just been described and represented above has been done so with a view to disclosure rather than limitation. Of course, various arrangements, modifications and improvements may be made to the above examples, without departing from the scope of the invention.
Claims
Claims
1. Device (D) for disassembling a mattress (M) comprising a core (A) wrapped in a ticking (700), the device being of the type implementing an operation of cutting the ticking (700) and an operation of separating the ticking (700) from the core (A) of the mattress (M), the core (A) of the mattress (M) forming a parallelepiped with edges, a shape taken up by the ticking (700) which, wrapping it, adopts the same edges, the device comprising a station for cutting the ticking (300) into two parts (710 and 720) and a separation station (400) receiving the mattress (M) wrapped in its cut ticking (700), the separation station (400) comprising clamps with movable jaws gripping the ticking (700) for separation purposes, CHARACTERIZED BY THE FACT THAT the separation station (400) comprises: a support surface (411) on which the mattress (M) wrapped in its cut ticking (700) is positioned, said support surface being equipped with a rim (412), the positioning of the mattress (M) bringing a portion of the mattress beyond said rim (412), at least one clamp (810) moving to grip one of the parts (720) of the parts of the ticking (700) wrapping the portion of mattress arranged beyond the rim (412), exerting traction on the gripped ticking part (720) and moving so that the pulled ticking part (720) bears and folds against said rim (720) during traction, said clamps being grouped according to three mobile gripping means: - a first means (490) which, depending on the clamps used, clamps the core (A) of the mattress (M) with the ticking (700) for the purpose of retaining it in position or clamps and removes, by cooperating with said edge (412), a first part (720) cut from the ticking with which they are engaged, - a second means (470) which, arranged on the other side of the mattress relative to the first means (490), pinches and removes the other cut part of ticking by pinching the ticking, - a third means (480) which, arranged on the other side of the mattress (M) relative to the first means (490), pinches the core (A) of the mattress for the purposes of retention or movement.
2. Device (D) according to claim 1, CHARACTERIZED BY THE FACT THAT said support surface (411) is constituted by the upper surface of a drive conveyor (410) on which the mattress (M) wrapped in its cut ticking (700) rests horizontally and said edge (412) is constituted by the edge of a shelf arranged as an extension of said conveyor (410) and transversely to its direction of advance.
3. Device (D) according to claim 1 or 2, CHARACTERIZED BY THE FACT THAT the clamps (810, 820, 830) of the first (490) and second (470) gripping means are movable and positioned so that their jaws close on an edge of the mattress (M) and / or the ticking (700).
4. Device (D) according to claim 1 or 2, CHARACTERIZED BY THE FACT THAT said first gripping means (490) is equipped with a horizontal pivot axis parallel to the longitudinal axis of the edge of the ticking (700) gripped by the clamps and with a rotational drive means for moving the gripped edge of the ticking (700) from a position in contact with the core (A) of the mattress (M) to a position spaced from the core of the mattress and orienting the ticking to place it in abutment on the edge (412).
5. Device (D) according to claim 4, CHARACTERIZED BY THE FACT THAT said rotation of the first gripping means (490) drives the gripped ticking edge backwards so as to partially turn over the gripped cut-out portion (720) of the ticking.
6. Device (D) according to any one of claims 1 to 5, CHARACTERIZED BY THE FACT THAT the ticking cutting station (300) uses a rotating blade (331) which cuts along a cutting line positioned longitudinally at the edge of the mattress so as to create two parts (710, 720) of ticking (700) connected together at one end and separable at another end.
7. Device (D) according to claim 6, CHARACTERIZED BY THE FACT THAT the ticking cutting station (300) comprises a support surface (311) on which one face of the mattress (M) is positioned and a weight (340) which is positioned punctually on the opposite face of the mattress (M) during the cutting of the ticking (700).
8. Device according to claim 1, CHARACTERIZED BY THE FACT THAT it comprises a final cutting station (500) implementing the cutting of the core (A) of the mattress (M) once separated from the ticking (700), said final cutting station (500) comprising at least one rotating circular saw blade (532) associated with lateral flanges (533, 534) fixed relative to the blade (532) and protecting almost the entire surface of the latter by leaving in contact with the material to be cut only a portion of the single cutting edge projecting relative to the flanges (533, 534).
9. Method for disassembling a mattress (M) comprising a core (A) wrapped in a ticking (700), said method comprising an operation of cutting the ticking (700) carried out by a ticking cutting station (300), an operation of separating the ticking (700) and the core (A) carried out by a separating station (400) according to any one of claims 3 to 7, the mattress (M) having a translational movement whose direction of advance (F1) defines for the mattress a front end and a rear end of the mattress, CHARACTERIZED IN THAT it includes the following operations: - cutting of the ticking (700) by the ticking cutting station (300) along a cutting line passing through the edge of the mattress (M) breaking down the ticking (700) into two parts (710 and 720), - moving the mattress (M) with the ticking (700) cut from the ticking cutting station (300) to the separation station (400), - pinching of a first part of the ticking (720) by a first gripping means (490) and of the associated mattress core portion (A), - pinching by a second gripping means (470) arranged opposite the first gripping means (490) relative to the mattress, of the second part (710) of ticking, - moving the second gripping means (470) for the purpose of separating the second part (710) of ticking from the associated mattress core portion (A), - pinching by a third gripping means (480) arranged opposite the first gripping means (490) relative to the mattress (M), of the front end of the mattress core (A) released from the ticking (700), - partial opening of the first gripping means (490) for the purpose of releasing the core (A) and maintaining the pinching of the first part (720) of the ticking, - moving the first gripping means (490) for the purpose of separating the first ticking part (720) from the associated mattress core portion (A) and pressing against the edge (412), - forward movement of the third gripping means (480) for the purpose of releasing the entire core (A) of the mattress from the two parts (720 and 710) of ticking respectively retained by the first (490) and second (470) gripping means, - evacuation of the ticking (700), - moving the core (A) of the mattress out of the separation station (400).
10. Method according to claim 9, CHARACTERIZED IN THAT the movement of the second gripping means (470) for the purpose of separating the second ticking part (710) from the associated mattress core portion (A) is accompanied by a rearward movement releasing the mattress core (A) from the second ticking part (710).
11. Method according to claim 9, CHARACTERIZED IN THAT the grippers (810, 820) of the first gripping means (490) are controlled so as to grip the ticking (700) and the core (A) during the pinching of the other part (710) of the ticking by the second gripping means (470).
12. Method according to claim 9, CHARACTERIZED IN THAT the movement of the first gripping means (490) for purposes of separating the first ticking part (720) from the associated mattress core portion (A) consists of a rotational movement of the clamps (810) turning the ticking part (720) gripped against the edge (412).