EP4389373A1 - Découpeuse volante - Google Patents

Découpeuse volante Download PDF

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Publication number
EP4389373A1
EP4389373A1 EP23220009.7A EP23220009A EP4389373A1 EP 4389373 A1 EP4389373 A1 EP 4389373A1 EP 23220009 A EP23220009 A EP 23220009A EP 4389373 A1 EP4389373 A1 EP 4389373A1
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EP
European Patent Office
Prior art keywords
axis
cutting
along
panel
exclusion
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23220009.7A
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German (de)
English (en)
Inventor
Marco VOLPATO
Luciano BOSCARI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cannon Ergos SpA
Original Assignee
Cannon Ergos SpA
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 Cannon Ergos SpA filed Critical Cannon Ergos SpA
Publication of EP4389373A1 publication Critical patent/EP4389373A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/60—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/006—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting blocs of plastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0043—Details, accessories or auxiliary or special operations not otherwise provided for the cutting machine comprising a linear motor

Definitions

  • the present invention relates to a fly cutting apparatus for cutting panels, intended to be installed on a panel production line, in particular on a panel production line obtained by continuous foaming.
  • Sandwich panels for heat insulation are surface structures mainly consisting of an intermediate layer of expanded polyurethane coated externally by stiff or flexible protective and coating surfaces; these external surfaces being formed by sheets unwound from reels and consisting of paper, aluminium, glass fibre composites, sheet metal or the like.
  • Foamed sandwich panels are manufactured continuously on production lines along which different processing stations are present.
  • the continuous panel when it is formed, it has to be processed by one of these stations that is dedicated to the transverse cutting of the panel so as to divide the panel into segments of determined length, a delicate task in which optimization and the correct compromise between cutting speed, cutting accuracy and the speed of the production line have to be found.
  • the cutting operation is performed by a fly cutting apparatus so as not to interfere with forming of the panel by continuous foaming that is the main plant process, optimizing and maximizing productivity; nevertheless, the apparatuses that are known today enable a maximum foaming line speed of about 60m/min to be achieved combined with cutting precision that is not greater than about 2mm and at a cutting speed that is not very high, with a resulting unsatisfactory foaming speed (a cutting speed that is not high limits the minimum panel length that can be produced) and a panel quality affected by great waste generation.
  • fly cutting apparatuses used today do not enable satisfactory cutting precision to be achieved that meet currently requested precision specifications; further, owing to the wear to the control members in continuous alternating movement, maintenance tasks are necessary that often entail long plant downtime.
  • Apparatuses for cutting panels are known from documents US 4 117 754 A , CN 217 225 708 U , US 2007/206997 A1 , CN 217 913 153 U and DE 35 00 751 A1 .
  • One object of the present invention is to improve current fly cutting apparatuses.
  • Another object of the present invention is to provide a fly cutting apparatus that enables the production speed of the foaming line to be maximized.
  • a further object of the present invention is to propose a fly cutting apparatus provided with great cutting precision and speed.
  • An additional object of the present invention is to provide a fly cutting apparatus that is able to minimize drastically the waste produced during cutting operations and is able to permit rapid and effective removal of the waste and residue arising from cutting.
  • Still another object of the present invention is to provide a fly cutting apparatus provided with a simplified and harmonized structural configuration benefiting mechanical reliability, configured so as to reduce mechanical vibrations and that has a reduced number of mechanical components subject to wear.
  • a further object of the present invention is to reduce the wear and vibrations produced during cutting.
  • a fly cutting apparatus 10 for cutting the panels transversely, which is intended to be installed on a panel production line P, in particular on a panel production line obtained by continuous foaming.
  • the fly cutting apparatus 10 for cutting panels comprises a flat advancement and support structure A for supporting a panel P, intended to be cut, which advances along a longitudinal axis X of the rest plane A.
  • the apparatus 10 has, further, a portal structure with a movable crossbar 12, which can move along the longitudinal axis X and is supported by two longitudinal pads 52,53 that are slidable along longitudinal sliding guide elements 54,54bis with guides parallel to the transverse axis X to follow the movement of the panel P.
  • a cutting unit 13 is arranged and supported slidably along the transverse axis Y on the movable crossbar 12, the cutting unit 13 being suitable for cutting the panel P along a transverse axis Y transverse and perpendicular to the longitudinal axis X.
  • a tightening pressing unit 14 is further connected by uprights 56,57 to the movable crossbar 12 to exert on the panel P a grasping and stabilizing pressure along a tightening axis Z1 during cutting.
  • the cutting unit 13 is associated with an extraction hood 18 suitable for sucking material like chips or other residues in the form of granules or dust produced during cutting and is movable in a controlled manner along a suction axis Z2 so as to approach or move away from the upper surface of the panel P.
  • the cutting unit 13 includes a motorized cutting element 17 that is movable in a controlled manner along an engagement/exclusion axis Z to penetrate or disengage from the section or thickness h of the panel P.
  • the command and control, in an independent and combined manner, of kinematic parameters of the cutting unit 13 is assigned to a control unit UC ( Figs 1 and 7 ).
  • the control unit UC is configured to control in an independent and synchronized manner both the kinematic parameters of the cutting unit 13 along the transverse axis Y and the kinematic parameters of the movable crossbar 12 along the longitudinal axis X, and the tightening pressing unit 14 ( Fig.3 ).
  • the control unit UC is configured to control in an independent and synchronized manner the kinematic parameters of the motorized cutting element 17 along the engagement/exclusion axis Z, so as to counteract and damp possible vibration triggering phenomena, thus containing the stresses to which the various members of the apparatus 10 could be subjected.
  • the control unit UC is configured to control in an independent and synchronized manner also the movement and the position of the extraction hood 18 so as to maximize the capacity thereof to capture and suck cutting residues ( Fig.7 ).
  • the movement of the extraction hood 18 along the suction axis Z2 is performed and controlled by a suction electric cylinder 58 drivable by linear movement means controlled by an electric motor; in particular the suction electric cylinder 58 is drivable by a suction electric motor of brushless type 19 provided with a respective absolute encoder and drivable in a dedicated manner.
  • the movement of the extraction hood 18 along the suction axis Z2 is performed and controlled by a pneumatic or hydraulic aspiration cylinder.
  • the flat advancement and support structure A is defined by oblong support and advancement elements 39,40,41,42,43,44 and by a horizontal plate 25 divided into two parallel abutting sections, as shown in Fig.3 . Further, as visible in Figs. 1 , 3 , 4 and 5 , the apparatus 10 is provided with lateral directing elements 33,34,35,36 suitable for ensuring sliding of the panel P during the cutting operation, by centring the panel P along the longitudinal axis X and preventing deflection thereof during a cut of limited length.
  • the abutting horizontal plate 25 is suitable for supportingly receiving the panel P, and is provided with a slit 27 that is suitable for making the excess cutting element 17 penetrate and slide below the lower surface of the panel P during transverse cutting of the panel P.
  • suction elements 37,38 are provided below the slit of the abutting horizontal plate 25 to suck the removed material produced during cutting.
  • the pressing unit 14 comprises a pressure crossbar element 15 that is movable along the uprights 56,57 with respect to the horizontal plate 25 according to the tightening axis Z1, by which the pressing unit 14 presses the panel P against the abutting horizontal plate 25, exerting the grasping and stabilizing pressure.
  • the pressure along the tightening axis Z 1 is exerted by tightening electric cylinders 60,61 drivable by motor means; in particular the tightening electric cylinders 60,61 are drivable by tightening motors of brushless type 28,29 ( Fig.4 ) that are fitted to the uprights 56,57 in a parallel configuration and commanded to move synchronized by the control unit UC, each of which is drivable independently and provided with a respective absolute encoder.
  • Each of the tightening electric cylinders 60,61 is also provided with a control means to ascertain the contact of a respective part of the pressure crossbar element 15 with the panel P by active magnetic traction and zero speed traction signals or by pressure detection by means of a load cell.
  • the pressure along the tightening axis Z 1 is exerted by a servomotor with mechanical transmission and synchronized by mechanical connecting means.
  • the servomotor with mechanical transmission for example, is of the rack-and-pinion type and the mechanical connecting means is, for example, of the rack-and-pinion type or of the belt-screws type.
  • the electrically controlled transmission means disclosed above enables the movement of the pressing unit to be controlled with a disengagement height that is settable, for example by 10 mm, so as to make the extension and the movement time very contained and therefore much more efficient than pneumatically or hydraulically controlled pressure means.
  • the cutting element 17 is supported by an engagement/exclusion carriage 55 that is fitted slidably along the engagement/exclusion axis Z on a transverse stroke carriage 20bis, shaped as a plate.
  • the movement of the engagement/exclusion carriage 55 along the engagement/exclusion axis Z is performed by an engagement/exclusion electric cylinder 59 drivable by motor means arranged on the transverse stroke carriage 20bis; still more in particular, the engagement/exclusion electric cylinder 59 is drivable by an engagement/exclusion motor of brushless type 16.
  • the engagement/exclusion carriage 55 in detail, is provided with dedicated pads (not shown) for sliding along a respective sliding engagement/exclusion guides element 20, with guides parallel to the engagement/exclusion axis Z, arranged on the transverse stroke carriage 20bis.
  • the engagement/exclusion carriage 55 has guides 99, parallel to the engagement/exclusion axis Z, for positioning according to the suction axis Z2 of the extraction hood 18.
  • the extraction hood 18 is provided with appropriate suction pads 67,68 that couple slidingly with the aforesaid guides 99 to enable the extraction hood 18 to translate along the suction axis Z2 with respect to the engagement/exclusion carriage 55 and then with respect to the cutting element 17.
  • the engagement/exclusion motor of brushless type 16 is driven by the control unit UC independently and is provided with a respective absolute encoder to control position and movement.
  • the engagement/exclusion axis Z is so oriented orthogonally to the support and advancement plane A that the cutting element 17 is movable and positionable through the thickness h of the panel P.
  • the movement of the cutting element 17 along the engagement/exclusion axis Z is performed by a pneumatic or hydraulic cylinder for controlling the engagement/exclusion movement coupled with a respective sliding engagement/exclusion guides element 20, parallel to the engagement/exclusion axis Z and arranged on the transverse stroke carriage 20bis.
  • the cutting element 17 can be, as shown in Fig.4 , a toothed circular blade 32 connected removably to the drive shaft of the cutting unit 13 to be able to be replaced rapidly so as to adapt the diameter and/or the toothing features thereof to the thickness h of the panel P.
  • the cutting unit 13 comprises a protection and suction unit 23 suitable for housing the cutting element 17.
  • the protection and suction unit 23 includes the extraction hood 18.
  • the cutting element 17 is made to protrude from the protection and suction unit 23 only by the quantity or circular segment necessary for obtaining the cutting depth appropriate for performing the operation of cutting the panel P. If the cutting element 17 consists of a circular blade 32, as shown in Fig. 4 , the protruding circular segment is also chosen in function of the diameter of the circular blade 32.
  • the protection and suction unit 23 comprises an openable access wall 45 to enable the aforesaid replacement of the circular blade 32 (or another removably connected cutting element 17).
  • the access wall 45 for example, can be made openable owing to the use of a hinge and the relative opening device or knob provided with safety.
  • the cutting element 17 has to be disengaged from the panel P by lifting the panel P along the engagement/exclusion axis Z; the disengagement can be performed by a lifting unit (not shown) supplied by electric power taken from the engagement/exclusion linear motor of brushless type 16 during normal operation and accumulated in an accumulating device or by a pneumatic weight over-balancing device (not shown).
  • the movement of the cutting unit 13, and thus of the cutting element 17, along the transverse axis Y is performed, as visible in Fig. 2 , owing to linear motor means; in particular owing to a transverse linear motor 62,24, controlled and drivable independently, and provided with a respective absolute inductive linear encoder for controlling movement and position, coupled with a respective sliding transverse guides element 26 with guides parallel to the transverse axis Y and arranged on the movable crossbar 12; the previously introduced sliding transverse guides element 26, has transverse damping elements 46,47 for damping the end stop of the movement of the cutting unit 13 along the transverse axis Y.
  • the transverse linear motor of brushless type 62,24 can be of synchronous or asynchronous type.
  • An active part of said transverse linear motor of brushless type 62,24, provided with coil magnetic elements for inducing controlled magnetic fields that exert magnetic forces to control the movement along the transverse axis Y is installed on the transverse stroke carriage 20bis.
  • transverse linear motor of brushless type 24 is provided with transverse pads 63,64 fitted to the transverse stroke carriage 20bis for sliding along the rails of the transverse guides element 26.
  • the active part of the transverse linear motor of brushless type 24 fitted to the transverse stroke carriage 20bis couples with the magnetic fields generated by a series of magnets comprised inside a transverse magnetic linear element 62 arranged parallel to the guides of the sliding transverse guides element 26 so as to permit the movement of the transverse stroke carriage 20bis, and thus of the cutting unit 13, along the transverse axis Y.
  • the movement of the movable crossbar 12 along the longitudinal axis X is performed owing to linear motor means; in particular owing to longitudinal linear motors 21,30;22,31.
  • the movable crossbar 12 extends along a direction D, parallel to the transverse axis Y, and has distal ends E1, E2 at which active parts of longitudinal linear motors of brushless type 21,22 are positioned to implement the movement along the longitudinal axis X of the movable crossbar 12.
  • the aforesaid active parts of the longitudinal linear motors of brushless type 21,22 comprise coil magnets to generate the magnetic fields for controlling the movement along the longitudinal axis X; further, as shown in Fig.4 , respective longitudinal pads 52,53 are provided for sliding along the guides of the longitudinal sliding guide elements 54,54bis.
  • the active parts of the longitudinal linear motors of brushless type 21,22 are controlled by the control unit UC.
  • the active parts of the longitudinal linear motors of brushless type 21,22 couple with the magnetic fields generated by a series of magnets included inside respective longitudinal magnetic linear elements 30,31 arranged parallel to the guides of the longitudinal sliding guide elements 54,54bis so as to enable the movable crossbar 12 to move along the longitudinal axis X.
  • the longitudinal magnetic linear elements 30,31 are arranged and fixed on respective crosspieces 65,66 that are part of a frame 11.
  • the longitudinal linear motors of brushless type 21,22 can be synchronous or asynchronous and the magnetic linear elements 31,30 can have permanent magnets or magnets that are activatable with electric coils; further, the longitudinal linear motors of brushless type 21,22 are provided with respective absolute encoders and are drivable independently with a coordinated control that ensures the synchronism thereof.
  • the longitudinal sliding guide elements 54,54bis have respective longitudinal damping elements 48,49,50,51 to damp the arrest of the movement of the movable crossbar 12 along the longitudinal axis X.
  • the transverse axis Y is perpendicular both to the longitudinal axis X and to the engagement/exclusion axis Z, the latter being in turn orthogonal to the longitudinal axis X and also parallel to the suction axis Z2 and to the tightening axis Z1.
  • the apparatus 10 further, has vibration sensors or accelerometers (not shown) coupled with the longitudinal axis X and with the transverse axis Y, which are configured to ascertain the correct operation of the apparatus 10 to detect possible faults and thus report the need for maintenance tasks.
  • the circular blade 32 is rotated at a rotation speed that is linked to various operating conditions, for example to the speed of the foaming line and to the thickness h of the panel P, but mainly depends on the diameter of the circular blade 32.
  • the movable crossbar 12 and the cutting unit 13 are stationary in a start position, and the circular blade 32, the extraction hood 18 and the pressing unit 14 do not interact with the panel P.
  • a first cut is performed with a manual control that grasps the panel P with the tightening pressing unit 14 after automatically synchronizing the advancement speed of the movable crossbar 12 with the advancement speed of the panel P and then commands the transverse cut to identify the position of the subsequent cut (the distance measurement is automated) depending on the length of the panel P to be produced.
  • the movable crossbar 12 is retracted in a direction opposite the direction of the movement of the panel P, and the cutting unit 13 is taken to an end of the crossbar 12, then the movement along the longitudinal axis X of the movable crossbar 12 is synchronized with the speed of the panel P and the pressing unit 14 applies the grasping and stabilizing pressure along the tightening axis Z1 by the pressure crossbar element 15; whilst the extraction hood 18 is brought near the panel along the suction axis Z2.
  • the circular blade 32 penetrates the panel P along the engagement/exclusion axis Z and the cutting unit 13 is moved along the transverse axis Y, with a movement that is simultaneous to the following movement along the longitudinal axis X, to perform cutting of the panel P.
  • the circular blade 32 disengages from the panel P, and both the extraction hood 18 and the pressure crossbar element 15 move away from the upper surface of the panel P.
  • the movement along the transverse axis Y of the cutting unit 13 is interrupted, the tightening pressing unit 14 disengaged and raised, and the cutting unit 13 returns to the start position; simultaneously, also the movable crossbar 12 returns to the start position with movement that is accelerated and opposite the movement direction of the panel P and the apparatus 10 is ready to perform a new cut.
  • the fly cutting apparatus 10 l successfully achieves the aforesaid previously set objects.
  • Linear motors of brushless type 21,22,24 coupled with the respective magnetic linear elements 30,31,62 also enable both cutting precision to be increased because they permit dynamic positioning of the moving axes in general and in particular during the acceleration and synchronization steps with the speed of the panel P, before activating the function of the tightening pressing unit 14, which other actuating systems do not achieve (precision guaranteed up to a few tenths of a millimetre), reducing waste, and the maximum cutting speed and foaming line speed (up to 70 m/min) to produce panels that are 4800 mm in length.
  • this solution also enables acceleration ramps to be set with management of derivative of acceleration ( Jerk ) during the initial and final application steps in order to damp effects due to sudden acceleration forces.
  • the proposed solution enables, compared with traditional solutions with pneumatic or hydraulic cylinders, time in the order of a second to be saved during each operating cycle, permanent lubrication of this type of cylinder and the use of ramps linked to the possibility of setting the Jerk.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP23220009.7A 2022-12-22 2023-12-22 Découpeuse volante Pending EP4389373A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202200026601 2022-12-22

Publications (1)

Publication Number Publication Date
EP4389373A1 true EP4389373A1 (fr) 2024-06-26

Family

ID=85556484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23220009.7A Pending EP4389373A1 (fr) 2022-12-22 2023-12-22 Découpeuse volante

Country Status (1)

Country Link
EP (1) EP4389373A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117754A (en) 1975-12-29 1978-10-03 Gullfiber Ab Transverse cutter
DE3500751A1 (de) 1985-01-11 1986-07-17 Maschinenfabrik Hennecke Gmbh, 5090 Leverkusen Verfahren und vorrichtung zum abtrennen von abschnitten von einem kontinuierlich zugefuehrten profil, welches vorzugsweise aus einer verbundbahn aus einem mit - insbesondere harten - deckschichten kaschierten schaumstoffkern besteht
US20070206997A1 (en) 2006-03-02 2007-09-06 C.R. Onsrud, Inc. Multiple table routing machine with roller hold-down
CN217225708U (zh) 2022-04-20 2022-08-19 信阳永豪轩家具有限公司 一种沙发制作用海绵切割机
CN217913153U (zh) 2022-08-08 2022-11-29 天津欣辰湖建材有限公司 一种防水建材板的分切装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117754A (en) 1975-12-29 1978-10-03 Gullfiber Ab Transverse cutter
DE3500751A1 (de) 1985-01-11 1986-07-17 Maschinenfabrik Hennecke Gmbh, 5090 Leverkusen Verfahren und vorrichtung zum abtrennen von abschnitten von einem kontinuierlich zugefuehrten profil, welches vorzugsweise aus einer verbundbahn aus einem mit - insbesondere harten - deckschichten kaschierten schaumstoffkern besteht
US20070206997A1 (en) 2006-03-02 2007-09-06 C.R. Onsrud, Inc. Multiple table routing machine with roller hold-down
CN217225708U (zh) 2022-04-20 2022-08-19 信阳永豪轩家具有限公司 一种沙发制作用海绵切割机
CN217913153U (zh) 2022-08-08 2022-11-29 天津欣辰湖建材有限公司 一种防水建材板的分切装置

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