![]() DECONDITIONER WITH IMPROVED CLEANING
专利摘要:
Treatment apparatus (1) for collecting material adhering to a packaging surface (13) to be treated as waste, the treatment apparatus (1) comprising a cylindrical drum (4) rotatable about a longitudinal axis (Ox) ) and provided with orifices (6) to form a screen holding the packages (13) and allowing the material to be collected to pass; and motorized means (12) for rotating the rotary drum (4), the treatment apparatus (1) also comprising dowel means (60) for at least partially unclogging orifices (6) during the rotation of the rotary drum (4). cylindrical drum (4). 公开号:FR3070882A1 申请号:FR1758450 申请日:2017-09-12 公开日:2019-03-15 发明作者:Remi Gomez 申请人:GREEN CREATIVE; IPC主号:
专利说明:
FIELD OF THE INVENTION The invention relates to the sorting of waste with a view in particular to its recycling or its elimination. The invention relates more particularly to a device for cleaning packaging in the context of the reprocessing of waste originating in particular from mass distribution. BACKGROUND OF THE INVENTION In the field of treatment of waste originating in particular from large-scale distribution, a treatment apparatus is known for collecting material adhering to the external surface of packaging to be treated. Such an apparatus is shown in Figure 1 attached. This device 1 comprises a cylindrical drum 4 rotating around a longitudinal axis Ox provided with orifices 6 forming a screen for retaining the packages and letting the material to be collected pass, motorized means 12 for rotating the cylindrical drum 4 and a casing external 3 for collecting the material from the packages 13 introduced into the cylindrical drum 4 and having passed through the wall of this cylindrical drum 4. Optionally, a rotary brush 7, also driven in rotation by the motorized means 12, is mounted in the cylindrical drum 4 to brush the internal surface of this drum. Thus, when a package 13 is introduced into this device 1, it is sucked up by the brush 7 to be brushed and taken into the zone of contact of the brush with the internal surface of the cylindrical drum 4, zone in which the package is subjected to intense brushing. This has the effect of removing the materials adhering to the surface of the packaging 13. Once the latter has left the contact zone, it is ejected by the brush 7 towards an upper region, to follow a substantially circular trajectory, at the during which it jumps over the brush 7 and strikes the cylindrical drum 4, before being caught again by the brush which brings it back into the contact zone to undergo a new intense brushing. With each jump out of the contact zone, the packaging under treatment loses an additional portion of the materials which adhere to its surface, these being centrifuged when the packaging passes over the brush while spinning. When treating packaging containing stringy waste - such as meat or pineapple or which can easily agglomerate such as semolina, plugs are formed (we speak of "studs" of material) which obstruct the orifices of the drum. It is then necessary to carry out frequent operations of untapping the drum. Such operations require access to the interior of the drum and cleaning the obstructed orifices one by one, which requires a prior emptying of the drum. The downtime of the machine is important and the dowding operations have a heavy impact on the operating costs of the machine. OBJECT OF THE INVENTION The object of the invention is to reduce the times and / or the costs of loosening a processing apparatus to collect material adhering to a packaging surface. SUMMARY OF THE INVENTION To this end, a treatment apparatus is provided for collecting material adhering to a surface of packaging to be treated as waste, the treatment apparatus comprising a cylindrical drum rotating around a longitudinal axis and provided with orifices for forming a screen retaining the packaging and allowing the material to be collected to pass through and motorized means for rotating the rotary drum. According to the invention, the processing apparatus also comprises means for loosening to at least partially unclog orifices during the rotation of the cylindrical drum. Thus, the loosening of the orifices takes place during the rotation of the drum and the downtimes of the treatment apparatus for effecting the loosening are reduced, which improves the profitability of the treatment apparatus. A particularly robust device is obtained when the loosening means comprise a wheel mounted for rotation about a first axis and provided with at least one radially projecting element intended to engage in one of the orifices of the drum. The device is particularly reliable when the first axis is substantially parallel to the longitudinal axis. The volume of waste that can be loaded into the drum is increased when the wheel is mounted outside the cylindrical drum. The construction of the wheel is particularly economical when the wheel comprises at least one disc mounted for rotation along the first axis or a plurality of braced discs mounted for rotation along the first axis. Advantageously, the orifices are each delimited by four faces, the construction of the drum and of the wheel being simplified when the four faces are parallel in pairs. A simple construction of the wheel, for example by flame cutting of a sheet, can be carried out when the radially projecting element is a tooth. The loosening of the orifices is more effective when a height of the tooth is greater than a thickness of the cylindrical drum. A construction of the drum by welding of curved sheets can be implemented when the wheel comprises at least two successive radial projecting elements which extend respectively in radial directions forming a first angle, and the wheel also comprises at least two elements in successive radial projection extending respectively in radial directions forming a second angle, the second angle being an integer multiple greater than one of the first angle. Advantageously, the treatment apparatus comprises a comb whose teeth extend between two successive discs of the wheel. Waste disposal is facilitated when a packaging ejector is arranged to slide inside the drum in a direction substantially parallel to the longitudinal axis. Advantageously also, the device comprises compression means against an internal face of the cylindrical drum and which are mounted in the cylindrical drum in the immediate vicinity of the internal surface thereof, the compression means being motorized to be driven in rotation around an axis substantially parallel to the longitudinal axis. The compression means then create a guide for the waste in a space which is reduced as the waste approaches the wall of the drum. This ensures compression of the packaging and its contents against the wall of the drum and therefore the extraction of the contents from its packaging. Advantageously, the packages are introduced into the cylindrical drum via a loading hopper comprising a loading opening and a supply opening facing a supply port opening into the cylindrical drum. The loading operations are facilitated when the loading hopper is arranged on a frame of the processing apparatus to slide between a first position in which the feed opening is distant from the feed port and a second position in which the feed opening faces the feed port. The performance of the machine for different types of waste can be easily evaluated when the device includes means for weighing the hopper in its second position. Other characteristics and advantages of the invention will become apparent in the light of the following description of a nonlimiting embodiment of the invention. BRIEF DESCRIPTION OF THE FIGURES The invention will be better understood on reading the following description of a particular non-limiting embodiment of the invention. Reference will be made to the accompanying drawings, in which: - Figure 1 is a schematic view of the apparatus according to the prior art, in longitudinal section, and has been described previously; - Figure 2 is a partial schematic perspective view of the device according to the invention, the front of the device being more particularly visible in the foreground; - Figure 3 is a partial schematic perspective view of the device according to the invention, the rear of the device being more particularly visible in the foreground; - the figure 4 East a view schematic of above of the device according to 1 ' invention T - the figure 5 East a view schematic in chopped off longitudinal according tothe plan VV of the device according to 1 ' invention; - the figure 6 East A sight front schematic of the apparatus according to the invention; - Figure 7 is a schematic perspective view of the apparatus according to the invention showing the hopper in a first position; - Figure 8 is a view similar to Figure 6 showing the hopper in a second position; - Figure 9 is a detail view of the apparatus according to the invention; - Figure 10 is a schematic perspective view of the drum of the apparatus according to the invention; - Figure 11 is a schematic perspective view of a detail of the drum of the apparatus according to the invention. DETAILED DESCRIPTION OF THE INVENTION With reference to Figures 2 6, the treatment apparatus according to the invention, identified 1, comprises a frame in the form of a structure formed by mechanically welded steel sections, carrying a hinged casing 3 of steel (the casing 3 is here partially shown for clarity purposes). The casing 3 contains a cylindrical drum 4 or trommel 4 in the form of a perforated sheet metal cylinder through a series of orifices 6 over the vast majority of its surface to form a rotary screen around a longitudinal axis Ox. A door 5 articulated along a horizontal axis perpendicular to the longitudinal axis Ox, closes the first end 4.1 of the trommel 4. A rotary cylindrical brush 7 and a roller 20 are mounted inside the trommel 4. The trommel 4 contains also an ejector 30 with packaging in the form of a disc 31 connected to a rod 32 of a piston 33, the rod 32 being mounted to slide in the trommel 4 in a direction substantially parallel to the longitudinal axis Ox. The disc 32 includes a cutout 34 to escape the brush 7 as well as a flap 35 which directs the packages projected by the brush 7 against the flap 35 toward the first end 4.1 of the trommel 4, then directing the packages towards the outlet of the trommel 4. A hopper 40 substantially in the shape of an inverted pyramid comprises a loading opening 41 and a supply opening 42 facing a supply port 8 opening into the trommel 4. A motorized endless screw 43 extends into the hopper 40 to direct the packages 13 towards the opening, supply the trommel 4 with waste. four wheels 44.1 to 44.4 placed at feed 42 and The hopper 40 includes proximity of the angles of the loading opening 41 of the hopper 40. These wheels 44.1 to 44.4 cooperate with a first and a second rail 45.1 and 45.2 integral with the chassis 2 so that the hopper 40 can slide between a first position (represented in and a second position in In the first position of the hopper 40 The feed opening of the hopper 40 is remote from the feed port In its second position, the feed opening of the hopper 40 faces the feed and each of the wheels 44.1 to 44.4 rests respectively on a piezoresistive gauge 46.1 to 46.4. The trommel 4 is driven in rotation about the longitudinal axis Ox using a motor not shown in the figures and is guided at each of its ends by two rotary rollers 11. The brush 7 is driven in rotation by a motor 12 which is carried by the chassis 2, at one of the ends of the device 1. The speed of rotation of the brush 7 is preferably much higher than that of the trommel 4. The roller 20 is rotated about an axis substantially parallel to the longitudinal axis Ox by a motor 23 and improves the recovery of the materials contained in the packaging. The roller 20, which has the general shape of a cylinder, is mounted inside the trommel 4 to roll on the inner surface of the trommel 4. The roller 20, better visible in FIGS. 5 and 6, has two successive sections along its length: a first section called “deconditioning” 21 having an external surface bristling with spikes arranged so as to extract the materials from the packages, and possibly shred the latter, and a second section called “rolling” 22 having an external surface smooth arranged so as to force the passage of the materials to be collected through the trommel 4. The piezoresistive gauges 45.1 to 45.4, the motorization of the trommel 4, the motor 12 of the brush 7, the motor 23 of the compression roller, the piston 33, the motorization of the worm screw 43 as well as other electrical equipment (door closing detector 5 etc.) are connected to a control unit 80 of the processing device 1 which is provided with a memory 81, a touch-sensitive display 82 and wireless communication means 83 (here a Wi-Fi interface). As shown in Figures 9 to it, the orifices 6 of the trommel 4 have a section substantially in the shape of a parallelepiped and are delimited by four 6.1 faces, 6.2 6.3 the faces 6.1 and extend in a and 6.4 parallel two by two. So, 6.3 are parallel to each other and plane substantially orthogonal to the longitudinal axis Οχ. The faces 6.2 and 6.4 extend in planes comprising the longitudinal axis Ox. The steel sheet trommel made from three sheets 50, 51 and being S700 to 50, 51 high elastic limit of thickness e. The and are firstly bent before assembled by welding to make a cylinder comprising three longitudinal welds 54, 55 and 56. This cylinder 53 is then placed in a hyperbaric water jet cutting machine to produce the orifices 6. The accuracy of implantation of the orifices 6 with respect to one another is of the order of 0.2 millimeters. Preferably, the orifices 6 have a section in the form of a quadrilateral whose sides have dimensions of between five and eight millimeters for the short side and eight and twelve millimeters for the long side. Sections of five millimeters by eight millimeters and eight millimeters by twelve millimeters are very preferred. The orifices 6 are located on the trommel 4 at a pitch p of between nine and eighteen millimeters. As can be seen in FIG. 10, the longitudinal welds 54, 55 and 56 do not have orifices 6. Thus, the longitudinal series 6.10 and 6.20 of orifices 6 located on either side of the weld 54 are separated by a distance D equal to twice the pitch p. The trommel 4 shown in Figure 10 has a diameter of about eight hundred millimeters and has fifty rows of one hundred thirty-two orifices 6. The one hundred and thirty-two orifices 6 are divided into three sectors of forty-four orifices 6 each made on the sheets 50 , 51 and 52. These three sectors are separated from each other by a first, a second and a third zone 57, 58 and 59 in which the longitudinal welds 55, 55 and 56 extend respectively. The treatment apparatus 1 comprises means for loosening the orifices 6 during the rotation of the trommel 4, HERE in the form of a wheel mounted for rotation about a first axis 61 extending substantially parallel to the longitudinal axis Ox. The wheel 60 comprises fifty from each other and is integral with discs 62 all identical and separated by spacers. Each disc 62 rotation of a grooved shaft 63 and has radiating grooves 65 of the shaft 63 a foot cylinder 66 in teeth 67 of height h, here trommel 4. As shown in figure forty-four teeth 67.1 in a radial direction aies 64 cooperating with the Each disc 62 includes a projection from which come greater than the thickness e of the 9, the disc 62 comprises at 67.44 each extending 68.1 to 68.44. The radial directions 68.1 to 68.44 of the first forty-four teeth 67 extend, one with respect to the following, at a first angle c <i equal to eight degrees and therefore cover an angular sector of three hundred and forty-four degrees . The disc 62 also comprises a forty-fourth tooth 67.44 and a first successive tooth 67.1, the forty-fourth and first radial directions 68.44 and 68.1 of which form a second angle a 2 equal to sixteen degrees. The wheel 60 thus has an angular sector of meshing 69 and a second angular sector of exhaust 70 covering the second angle a 2 . The value of the angle a 2 is, here, equal to twice the value of the angle ai. The wheel 60 is mounted outside the trommel 4 so that the teeth 67 of each of the discs 62 cooperate with the orifices 6 of the trommel 4 in the manner of two toothed wheels. A comb 71 secured to the chassis 2 is placed near the wheel 60 so that its teeth 72 extend between two successive discs 62 of the wheel 60. In operation, the user brings the hopper 40 into its first position and loads the latter in packages 13 through the loading opening 41. Once the hopper 40 is loaded, the user pushes it back into its second position. Piezoresistive gauges 46.1 to 46.4 transmit to the control unit 80 an electrical signal representative of the load to which they are subjected. The control unit 80 deduces therefrom a mass of packaging 13 loaded into the hopper 40, stores it in the memory 81 and displays it on the display 82. Optionally, this quantity is transmitted by the means of communication without thread 83 to a remote server. The control unit 80 controls the rotation of the trommel 4, the brush 7 and the roller 20. The control unit 80 then orders the start-up of the worm screw 43 until a quantity determined packaging 13 - can be measured using piezoresistive gauges 46.1 to 46.4 - is introduced into the trommel 4. The rotation of the trommel 4 causes the rotation of the wheel 60 and the introduction of the teeth 67.1 to 67.44 in the orifices 6 during the rotation of the trommel 4. The ratio of the original diameters of the wheel 60 and of the trommel 4 being whole (this ratio is here 3), the wheel 60 systematically presents the exhaust sector 70 facing the 'one of the welds 54, 55 or 56, guaranteeing an absence of collision between a tooth 67 and one of the welds 54, 55 or 56. The studs of material discharged from the orifices 6 by the teeth 67 fall into the trommel 4 where the brush 7 and the roller 20 disintegrates them and evacuates them through orifices 6. The evacuation of the packages 13 from the trommel 4 can be done in several ways. Depending on the degree of soiling of the packages 13, the treatment device 1 can operate with the door 5 fully or partially open, the evacuation of the packages 13 being carried out as they are processed. It is also possible to close the door 5 during the processing of the packages 13 and, at the end of a predefined processing time, open the door 5 and actuate the jack 33 to cause an exit from the packaging ejector 31 which slides inside the trommel 4 and pushes the packages 13 out of the trommel 4 by the first end 4.1. The control unit 80 can then be actuated to control the endless screw 43 in order to reload the trommel 4. The dimensions of the orifices of the drum 4 are chosen to retain the packages 13, while allowing the materials which they contain and which adhere to these packages to pass 13. The passage of the materials in question is further facilitated by the centrifugal effect of the rotation of the trommel 4, so that these materials are then found in the casing 3, the packages 13 being retained inside the trommel 4. Of course, the invention is not limited to the embodiment described but encompasses any variant coming within the scope of the invention as defined by the claims. In particular, although here the compression of the waste is ensured by a cylindrical roller mounted for rotation, the invention also applies to other compression means such as for example a fixed cylindrical roller, a fixed plane scraper positioned to form an acute eagle with the internal surface of the drum, or a fixed plate having a cross section substantially in the form of a comma. Such a scraper or such a sheet may have a portion provided with claws (first unpacking function) and a second guide portion (rolling). More generally, the compression means create a guide for the waste in a space which is reduced as the waste approaches the internal surface. of the drum. The compression means of the invention may also include a compression cone, the axis of rotation of which may or may not be parallel to the axis of rotation of drum, a cylinder with a guiding curve octagonal or whatever. The compression means can also be arranged to perform other processing functions, in addition or not of the above functions. It is believed in particular, in the case of the roller described, to a third fitted section bristles similar to those of the brush. Well that here the means of loosening include a tooth wheel, the invention applies also at other means of lashing the drum during its rotation such as for example a high pressure injection of water, air or the weights which strike the drum. Well that here the housing is made of steel, the invention also applies to other material of construction for the casing like stainless steel, other types of metals, plastics, or carbon or glass fibers. Although here the packaging ejector is actuated by a piston, the invention also applies to other types of actuation of the packaging ejector such as for example manual or pneumatic actuation. Well that here the treatment device understands piezoelectric gauges, the invention applies to other types of weighing means such as, for example, fluid pressure sensors, a Wheatstone bridge or a displacement sensor of a prestressed element. Well that here the device includes a brush and means compression, the invention applies also at a device without a brush and / or compression means and in which the separation of the material to be collected from the surface of the waste is effected by centrifugal effect and stirring. Although here the drum is produced by welding three curved sheets of S700 steel, the invention also applies to other embodiments of the drum such as for example a drum produced from one, two or more than three curved sheets, these may be in different steel grades such as, for example, abrasion-resistant steels of the Hardox® or Z120M12 type. Although here the orifices located on either side of a weld are spaced a distance equal to twice the pitch of implantation of the orifices, the invention also applies to orifices situated on either side 'other of a weld spaced a distance less than or greater than twice the implantation pitch, and preferably proportional to an integer multiple of the implantation pitch of the orifices. Although here the wheel comprises forty-four projecting teeth, the invention also applies to loosening means comprising between one and forty-three teeth or even more than forty-four. The wheel may include other types of projecting elements such as, for example, cylinder portions or brushes. Although here the wheel comprises a plurality of braced discs, the invention also applies to a one-piece construction of the wheel by molding or machining in the mass. Although here the wheel is mounted outside the drum, the invention also applies to a wheel mounted inside the drum.
权利要求:
Claims (12) [1" id="c-fr-0001] 1. Processing device (1) for collecting material adhering to a packaging surface (13) to be treated as waste, the processing device (1) comprising a cylindrical drum (4) rotatable about a longitudinal axis (Ox) and provided with orifices (6) to form a screen retaining the packages (13) and allowing the material to be collected to pass; and motorized means (12) for rotating the cylindrical drum (4); characterized in that the processing apparatus (1) also comprises dowelling means (60) for at least partially unclogging orifices (6) during the rotation of the cylindrical drum (4). [2" id="c-fr-0002] 2. A processing device (1) according to claim 1, in which the loosening means (60) comprise a wheel (60) rotatably mounted along a first axis (61) and provided with at least one radially projecting element ( 67) intended to engage in one of the orifices (6) of the cylindrical drum (4). [3" id="c-fr-0003] 3. Treatment apparatus (1) according to claim 2, wherein the first axis (61) is substantially parallel to the longitudinal axis (Ox). [4" id="c-fr-0004] 4. A processing device (1) according to any one of the preceding claims, in which the wheel (60) is mounted outside the cylindrical drum (4). [5" id="c-fr-0005] 5. A processing device (1) according to one of claims 2 to 4, wherein the wheel (60) comprises at least one disc (62) rotatably mounted along the first axis (61). A processing apparatus according to claim 5, wherein the wheel (60) comprises a plurality of rotatably mounted discs 7. A processing apparatus according to any one of the preceding claims, wherein Apparatus claim 7, in each delimited processing which the four by four faces according to the faces [6" id="c-fr-0006] 6.2, according to protruding [7" id="c-fr-0007] 10. A treatment device (1) according to claim 9, in which a height (h) of the tooth (67) is greater than a thickness (e) of the cylindrical drum (4). [8" id="c-fr-0008] 11. Processing apparatus (1) according to one of claims 2 to 10, in which the wheel (60) comprises at least two successive radially projecting elements (67.1-67.44) which extend respectively in radial directions (68.1 -68.44) forming a first angle (ai), and the wheel (60) also comprises at least two successive radial projecting elements (67.44, 67.1) extending respectively in radial directions (68.44, 68.1) forming a second angle ( 02), the second angle (cq) being an integer multiple greater than one of the first angle (ai). [9" id="c-fr-0009] 12. Treatment apparatus (1) according to one of claims 6 to 13, comprising a comb (71) whose teeth (72) extend between two successive discs (62) of the wheel (60). [10" id="c-fr-0010] 13. Treatment apparatus (1) according to any one of the preceding claims, comprising a packaging ejector (30) arranged to slide inside the cylindrical drum (4) in a direction substantially parallel to the longitudinal axis (Ox ). according to any one of the preceding claims, comprising compression means (20) against an internal face of the drum which are mounted in the drum in the immediate vicinity of the internal surface thereof, the compression means (20) being motorized to be rotated about an axis substantially parallel to 1 longitudinal axis (Ox). 1 any one of the preceding claims, wherein the packages introduced into the drum via a load having a feed opening (8) opening into the cylindrical drum [11" id="c-fr-0011] 16. Treatment apparatus (1) according to claim 15, wherein the loading hopper (40) is arranged on a frame (2) of the treatment apparatus (1) to slide between a first position in which the opening supply (42) is remote from the supply port (8) and a second position in which the supply opening (42) faces the supply port (8). [12" id="c-fr-0012] 17. Treatment apparatus (1) according to any one of the preceding claims, in which the treatment apparatus (1) comprises weighing means (46.1-46.4) of the hopper (40) in its second position.
类似技术:
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同族专利:
公开号 | 公开日 CA3075441A1|2019-03-21| EP3681647A1|2020-07-22| US20200298246A1|2020-09-24| FR3070882B1|2022-02-04| WO2019053018A1|2019-03-21| EP3681647B1|2021-11-17|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 US2316986A|1940-01-30|1943-04-20|Parker Victor Lee|Bulb grading machine| FR2676186A1|1991-05-06|1992-11-13|Courtnay Commodity Ltd|PROCESS FOR TREATING GARBAGE BY SEPARATION BETWEEN THE MOST FURNISHED COMPONENTS AND THE HARDEST COMPONENTS.| DE20214115U1|2002-09-12|2004-02-12|Maschinenbau Farwick Gmbh|Rotating drum has perforated helical profile and interlocking profiled brush separating one grade of particulate matter from a larger grade| WO2007042926A1|2005-10-13|2007-04-19|Wst International Limited|Apparatus for disposing garbage bags| FR3028779A1|2014-11-24|2016-05-27|Green Creative|IMPROVED ROTARY CUTTING WASTE SORTING DEVICE|CN112337584A|2020-10-17|2021-02-09|安庆皖塑化工科技有限公司|Preparation method of crack-resistant and leakage-resistant putty powder| CN111318337B|2020-04-07|2021-06-18|山东政商信息科技有限公司|Cement foaming heated board waste recycling processing equipment| CN111957546A|2020-08-14|2020-11-20|杭州伊尹健康技术有限公司|Method for dredging in rotation of ejector rod equidirectional moving cylinder of traditional Chinese medicine sieving machine| CN112206887A|2020-09-29|2021-01-12|湖南省展望生物科技发展有限公司|Rapeseed grinding device for rapeseed oil production and use method thereof|
法律状态:
2019-03-15| PLSC| Publication of the preliminary search report|Effective date: 20190315 | 2019-09-26| PLFP| Fee payment|Year of fee payment: 3 | 2020-09-14| PLFP| Fee payment|Year of fee payment: 4 | 2021-09-21| PLFP| Fee payment|Year of fee payment: 5 |
优先权:
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申请号 | 申请日 | 专利标题 FR1758450|2017-09-12| FR1758450A|FR3070882B1|2017-09-12|2017-09-12|DECONDITIONER WITH IMPROVED CLEANING|FR1758450A| FR3070882B1|2017-09-12|2017-09-12|DECONDITIONER WITH IMPROVED CLEANING| CA3075441A| CA3075441A1|2017-09-12|2018-09-11|Depackaging apparatus with improved cleaning| US16/646,803| US20200298246A1|2017-09-12|2018-09-11|Depackaging apparatus with improved cleaning| EP18765648.3A| EP3681647B1|2017-09-12|2018-09-11|Depackaging apparatus with improved cleaning| PCT/EP2018/074505| WO2019053018A1|2017-09-12|2018-09-11|Depackaging apparatus with improved cleaning| 相关专利
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