US3621972A - Method and apparatus fof feeding and guiding logs to woodworking machines - Google Patents

Method and apparatus fof feeding and guiding logs to woodworking machines Download PDF

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Publication number
US3621972A
US3621972A US3621972DA US3621972A US 3621972 A US3621972 A US 3621972A US 3621972D A US3621972D A US 3621972DA US 3621972 A US3621972 A US 3621972A
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US
United States
Prior art keywords
log
path
centering
conveyer
holddown
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Expired - Lifetime
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English (en)
Inventor
Alfred Reuter
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.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Priority claimed from DE19691913249 external-priority patent/DE1913249C/de
Application filed by Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6633—By work moving flexible chain or conveyor

Definitions

  • the feed path Prior to centering, the feed path is comprised of two longitudinally aligned conveyors which may be tilted toward each other, so that when the log is positioned on both of the conveyors, it will contact essentially only two points thereof enabling the log to rotate about is own axis in the event the weight of the log is unevenly distributed.
  • a lifting and rotating device may be positioned between the conveyors to lift and rotate the log about its axis to insure the centering point of the log is properly positioned with respect to the path ofconveyance.
  • ALFRED REUTER PATENTEDNHV 23 an 3. e21 .972
  • SHEET 3 BF 3 Inventor: A LFRED QEUTEK W41)? ⁇ DO CXWQQ METHOD AND APPARATUS FOF FEEDING AND GUIDING LOGS TO WOODWORKING MACHINES SUMMARY OF THE INVENTION
  • This invention relates to method and apparatus for feeding and guiding logs into woodworking machines, such as for example, frame saws, profile chipping machines.
  • the present invention employs an essentially horizontal continuous conveying installation for transporting the log; such installation may be, for example, a chain bed, conveyor belt or roller bed.
  • Feed arrangements known in the prior art employ continuously revolving conveying chain arrangements, so-called chain beds, to feed the logs to a woodworking machine.
  • chain beds continuously revolving conveying chain arrangements
  • cants cants
  • the above objects are achieved through at least two pairs of centering devices disposed on opposite sides of a horizontal conveyor which press the log into the middle of the conveyor, and through at least one holddown device which holds the log down on the conveyor.
  • controlled positioning of the log on the conveyor will be achieved, while the holddown device presses the log against the conveyor bed and thus makes possible its conveyance by the conveyor to the woodworking machine.
  • this arrangement it will not only be possible to feed untreated logs, but also cants.
  • each pair of centering devices is coupled to each other so that their centering movement inwardly toward the conveyor will take place symmetrically relative to the longitudinal center of the conveyor path.
  • each pair of centering devices be operable through a common hydraulic or pneumatic cylinder.
  • only a single cylinder is required for each pair of centering devices which allows a simple coupling of the two centering devices in each pair as described above.
  • a reversing system which responds at the passage of a log by the last pair of centering devices to decrease or neutralize the power of the centering devices while increasing the effective power of the holddown device.
  • the log can be initially aligned with the center of the conveyor path under the effective power of the centering devices without impedance by a greater pressure force exerted on the log by the holddown device.
  • the reversing system allows the holddown device to exert suffb cient force to hold the log firmly on the conveyor during the last phase of the feeding to the processing machine.
  • the reversing device causes withdrawal of the centering devices so that jamming of the log will be prevented.
  • the aforementioned system can be effectively achieved by operating the devices by hydraulic cylinders which are alternatively supplied with work fluid from highand low-pressure fluid sources.
  • the associated hydraulic cylinders are connected with the high-pressure fluid source while the holddown device is connected with the low-pressure fluid source.
  • their associated LII hydraulic cylinders will be connected with the low-pressure source while the holddown device will be connected to the high-pressure source.
  • the reversing system can be carried out by a hydraulic reversing valve which will function to alternatively connect the centering devices and holddown devices with the highand low-pressure sources.
  • the desired reversal of the power effect between the centering devices and the holddown devices can be achieved effectively and very rapidly.
  • the reversal of power for driving the centering and holddown devices can be achieved in a rapid and simple manner through a hydraulic reversing valve.
  • centering and/or holddown devices be pivotable about an axis running transverse to the conveying direction. This makes possible good guidance of these devices while providing good adaptability to the differing dimensions and positions of the log.
  • the centering and holddown devices may each have movable chains, rollers or conveyor belts rolling off along the log during the conveying movement. In this manner, resistance to movement of the log will be lowered.
  • the chains, rollers or conveyor belts incorporating the devices may be driven synchronously with the conveyor in order to aid feeding of the log by the conveyor and thereby to relieve the drive mechanism of the conveyor.
  • the centering devices and/or the holddown devices may alternatively comprises swinging flaps pivotally mounted at an angle to the longitudinal direction of the log and conveyor path. These flaps may have a simple structure and also adapt themselves easily to differing dimensions and positions of the logs.
  • the last pair of centering devices reached by the logs operates the reversing valve as soon as the beginning of the log upon its passage swings the two centering devices apart.
  • the reversal will take place precisely at the point in time when the centering device reached last will have aligned the beginning of the log.
  • the chain bed of the conveyor is provided with teeth to grasp the log, which, however, for practical purposes, are at the most so large that a slipping of the teeth along the log takes place before a permissible chain force will be surpassed.
  • the teeth guarantee the log being carried along by the chains, but at the same time they make possible a slipping of the chains whenever the force occuring along the teeth surpasses a permissible value.
  • the beginning of the conveying installation is formed by two conveyors each arranged in a separate frame which is pivoted about a horizontal axis running transversely to the conveying direction.
  • Each conveyor may be pivoted to an inclined position in relation to one another before the log is conveyed to the centering devices.
  • This facilitates turning of the log about its longitudinal axis by a lifting and rotary device positioned between the two conveyors. This enables the heaviest point on the log to be positioned downwards so that the log will firmly rest on the conveyor bed.
  • the log lifting and rotating device may be provided by two rollers with a revolving axis running essentially in the conveying direction, one of which rollers at least can be driven. But instead of that or besides that, it may also have a band or a chain running transversely to the conveying direction with the help of which the log can be turned. The rollers are positioned below the conveyor path between the two conveyors to contact the log.
  • FIG. 1 is a side elevational view of apparatus embodying the invention
  • FIG. 2 is a plan view of the apparatus of FIG. I;
  • FIG. 3 is a schematic side view of centering and holddown devices and associated hydraulic system incorporated in the apparatus
  • FIG. 4 is a plan view of the devices shown in FIG. 3;
  • FIG. '5 is a schematic side view-of two conveyors at the inlet section of the apparatus with the conveyors shown in inclined positions;
  • FIG. 6 is a view similar to FIG. 5, but with the conveyors in horizontal position.
  • a profile chipping machine 1 has been shown as an example of a woodworking machine to which logs may be fed in accordance with the present invention.
  • the conveying installation for feeding the logs or cants consists of three chain beds 2, 3 and 4 arranged one behind the other, each of which is formed by several conveying chains revolving endlessly and arranged one beside the other.
  • the first bed of chains 2 is mounted swivelably with its frame 5 around the axis 6.
  • a pivot drive for example a hydraulic cylinder 7, produces the pivoting of the frame 5.
  • the second chain bed 3 is mounted swivelably with its frame 11 by means of axis 12.
  • the swivel cylinder 13 brings about the swiveling movement.
  • a log lifting and turning device 17 in which two drivable rollers 18 and 19 are mounted with a rotational axis running the longitudinal direction of the conveying installation.
  • the upper part of the rotating arrangement 17, bearing the rollers 18 and 19, can be lifted by means of a suitable hydraulic device (not shown).
  • l-lolddown devices 21, 22 have conveying chains 31 and 32 which are driven by one common driving engine 33 (FIG. 1).
  • Holddown devices 21 and 22 are each mounted swivelably with one around an axis 37 or 34 in the frame structure 20. Hydraulic cylinders 35 or 36, likewise arranged in frame structure 20, will swing the holddown devices 21 and 22 around axes 37 and 34.
  • the other pair of centering devices 23 and 24 have conveying chains 41 and 42, which can be swung around axes 43 and 44 and which are driven by operating engines 45 and 46. Both centering devices 23 and 24 are connected via toggle levers 48 and 49 with a common hydraulic cylinder 47 for the purpose of carrying out the swinging movement.
  • the second pair of centering devices are formed by flaps and 26, which can pivot around axes 52 and 53. The pivoting movement is brought about via levers 55 and 56 by means of a common hydraulic cylinder 54.
  • the hydraulic installations for swinging holddown devices and centering devices consists essentially of a high-pressure pump 60 with a high-pressure-adjusting valve 61 and a lowpressure pump 62 with a low-pressure-adjusting valve 63. Both hydraulic parts of the installation are connected with hydraulic cylinders 35, 36 or 47, 54 via a reversing valve 64.
  • a thermal switch 65 arranged on centering units 25 and 26 can be switched through the swinging movement of the centering devices to operate reversing valve 64.
  • the arrangement according to the invention operates as follows. Initially, the log reaches the driven chain beds 2 and 3 (FIG. 5) inclined in relation to one another and in doing so it revolves into such a position that its center of gravity reaches the deepest point in relation to. the two points of support. Through lifting the revolving device 17 with the rollers 18 and 19, the operator can support the turning process and impart to the log the position which will be most favorable for further treatment, that is to. say that position in which the log will rest as completely as possible on the conveyors.
  • chain beds 2 and 3 are set horizontally, since now a turningof the workpieceis not necessary; the turning device 17 will remain out of operation.
  • the log or cant moves toward woodworking machine 1 and first of all makes contact with centering chains 4! and 42 of the first centering device arranged laterally andrdriven synchronously with the chain bed.
  • the chains will seize the log or the cant and will prevent the log from turning around its own axis. As a result, the log will be prevented from changing again its favorable turning the position reached previously.
  • the centering chains 41 open symmetrically because they are positively connected with one another via hydraulic cylinder 47.
  • the hydraulic cylinder 47 is connected with hydraulic high-pressure installation; the two chains 41 and 42 are swung apart counter to the effect of the pressure agent being under high pressure. Since the chains can move only symmetrically in relation and toward the middle of the chain bed 4, the centering chains 41 and 42 align the log or the cant centrally relative to the axis of the conveyor bed.
  • the log or cant then moves below the holddown device 21 likewise driven synchronously with chain bed 4. This is accomplished without any particularly large expenditure of power since the hydraulic cylinder 35 of the holddown device 21 is connected this time with the low-pressure supply installation.
  • the log or cant strikes against flaps 25 and 26 which form the second pair of centering devices.
  • the common hydraulic cylinder 54 of the two flaps 25 and 26, which can only be swung symmetrically toward the middle of chain bed 4, is likewise connected with the hydraulic high-pressure supply installation; flaps 25 and 26 upon entrance of the log exert a great force on the log as a result of which a central alignment of the log on the conveyor bed is achieved.
  • the terminal switch 65 is operated, which reverses hydraulic control switch 64 and thus reverses the pressure conditions between the lateral centering units 23, 24, 25, 26 and the holddown device 21. That is to say, the high oil pressure which compressed the lateral centering arrangements strongly and which centered the log or cant thus in transverse direction on chain bed 4, is conducted to hydraulic cylindrical 35 of the holddown device 21. AT the same time the hitherto low oil pressure is switched from the holddown arrangement 21 to the lateral centering devices 23, 24, 25, 26.
  • a second holddown device 22 which is constructed in the same way as holddown device 21, and whose hydraulic cylinder 36 is switched in the same manner as hydraulic cylinder 35 of the first holddown device 21. That is to say, hydraulic cylinder 36 is likewise connected to the high-pressure supply. In this aligned position the log or cant will reach the woodworking machine.
  • the drive of chains 31 and 32, holddown devices 21 and 22, as well as chains 41 and 42 ofgentering devices 23 and 24, takes place synchronously with movement of chain bed 4, so that a drive. It is also possible to slip between the chains and the log will be avoided as much as possible.
  • conveyor belts or rollers may also be employed. It is also possible to do away with the drive of the chains, belts or rollers and to let them roll freely without make all of themes chains, rather than flaps.
  • Apparatus for feeding logs comprising in combination, conveyor means for moving logs along a generally horizontal path, centering means movable transversely of the conveyor means for moving a log towards alignment with the longitudinal axis of said path, and holddown means separate from said centering means acting from above said path for urging the log downwardly on said path.
  • centering means includes a pair of centering devices positioned on opposite sides of said path to be movable towards and away from said path generally in horizontal planes.
  • Apparatus defined in claim 3 further including drive and control means for moving said centering devices in unison and such that the centering devices are always symmetrically disposed on opposite sides of the axis of said path throughout their travel.
  • Apparatus defined in claim 6 further including drive and control means for releasing the driving force on said centering devices and for increasing thedriving force on said holddown means after the log has been centered by said centering means.
  • said drive and control means includes a first fluid motor operatively connected to said centering means to drive the same, a second fluid motor operatively connected to said holddown means to drive the same, a source of high-pressure motivefluid, a source of low-pressure motive fluid, and reversing valve means for alternately connecting said sources of 'motive fluid with said first and second fluid motors;
  • Apparatus defined in claim 1 further including at least two of said centering means and two of said holddown means, said centering means being spaced along said path with one holddown means being located between said centering means and with the other holddown means being located down path of the last centering means.
  • said holddown means includes a member pivoted at one end for swinging movement in a vertical plane parallel to said path and being free at the other end for engaging a log.
  • said conveyor means includes endless chains defining said path and for moving the logs along said path, said chains having teeth for engaging the log, said teeth being dimensioned so as to slide relative to the log when excessive driving forces are imparted to said chains.
  • Apparatus for feeding logs comprising in combination, conveyor means for moving logs along a generally horizontal path, centering means acting transversely of the conveyor means for moving a log towards alignment with the longitudinal axis of said path, holddown means acting from above said path for urging the logs downwardly on said path, and
  • Apparatus defined in claim 13 wherein said last-recited means includes two rollers mounted for rotation about an axis generally parallel to said path and means for raising and lowering said rollers into and out of engagement with the underside of a log.
  • Apparatus for feeding logs comprising in combination, conveyor means for moving logs along a generally horizontal path, centering means acting transversely of the conveyor means for moving a log towards alignment with the longitudinal axis of said path, and holddown means acting from above said path for urging the log downwardly on said path, said conveyor means including frame mounted for pivotal movement about an axis transverse to said path intermediate the ends of the conveyor for changing the inclination of the conveyor path, and wherein there is further included a second conveyor means situated before said first conveyor means and in generally longitudinal alignment with said first conveyor means, said second conveyor means being situated adjacent the inlet end of said first conveyor means, said second conveyor means including a frame mounted for pivotal movement between its ends about an axis transverse to said pivotal path of conveyance for changing the inclination of its path whereby the paths of said first and second conveyor means may be inclined downwardly towards each other such that a log will contact said conveyor means only at essentially two points thereby permitting the log to rotate under its own weight about its longitudinal axis.
  • Apparatus defined in claim 15 further including logrotating means situated between said first and second conveyor means for positively engaging and rotating the log about its longitudinal axis.
  • Apparatus defined in claim 16 further including means for raising and lowering said log-rotating means into and out of engagement with a log.
  • a method of feeding logs comprising the steps of feeding a log horizontally generally along a conveyor path, moving members transversely of said path into engagement with opposite sides of said log to center the same on the longitudinal axis of said path, and holding the log down on said path after it is centered.
  • the method defined in claim 19 further including the steps of again centering the log on the longitudinal axis of the path after it is held down and again holding the log down after it is centered the second time.
  • a method of feeding logs comprising the steps of feeding a log horizontally generally along a conveyor path, engaging opposite sides of said log to center the same on the longitudinal axis of said path, holding the log down on said path after it is centered, and rotating the log about its axis to properly position the center of gravity of the log towards the path prior to centering the log on the path.
  • Apparatus for feeding logs comprising in combination, conveyor means for moving logs along a generally horizontal path, centering means acting transversely of the conveyor means for moving a log towards alignment with the longitudinal axis of said path, and holddown means acting from above-said path for urging the logs downwardly on said path, said centering means including a pair of centering devices positioned on opposite sides of said path to be movable towards and away from said path generally in horizontal planes, said centering devices each including an endless movable member which engages the log.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
US3621972D 1969-03-15 1969-06-13 Method and apparatus fof feeding and guiding logs to woodworking machines Expired - Lifetime US3621972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691913249 DE1913249C (de) 1969-03-15 Vorschubeinrichtung fur Holz bearbeitungsmaschinen

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US3621972A true US3621972A (en) 1971-11-23

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US3621972D Expired - Lifetime US3621972A (en) 1969-03-15 1969-06-13 Method and apparatus fof feeding and guiding logs to woodworking machines

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US (1) US3621972A (xx)
AT (2) AT307004B (xx)
CH (1) CH495201A (xx)
CS (1) CS166250B2 (xx)
FI (1) FI53409C (xx)
FR (1) FR2034962A1 (xx)
GB (1) GB1257560A (xx)
NL (1) NL6909021A (xx)
SE (1) SE346933B (xx)
YU (1) YU123769A (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373563A (en) * 1974-07-30 1983-02-15 Alan Kenyon Sawing of lumber from logs
US4453406A (en) * 1980-12-18 1984-06-12 Behringwerke Aktiengesellschaft Device for the transport of test specimens in strip form to a measuring apparatus
US5024572A (en) * 1985-07-16 1991-06-18 Kao Corporation Goods handling method and apparatus thereof
US5382154A (en) * 1992-04-27 1995-01-17 Rheon Automatic Machinery Co., Ltd. Method and device for aligning and bending individual round elongated dough pieces
WO2003011539A1 (en) * 2001-08-01 2003-02-13 Roberta Mancianti Automatic multi band saw
US20060144675A1 (en) * 2005-01-06 2006-07-06 Mitchell Rory M Conveyor system
US20090000103A1 (en) * 2007-06-28 2009-01-01 Crown Equipment Corporation Manufacturing cell and elements of the cell
CN105540215A (zh) * 2016-01-22 2016-05-04 东莞市誉铭新精密技术股份有限公司 Ccd检测机的定位装置
CN110625717A (zh) * 2019-10-28 2019-12-31 四川麦笠机械设备有限公司 一种制备纤维化竹单板的连续自动化机组设备
TWI720329B (zh) * 2018-07-20 2021-03-01 昌鉅機械股份有限公司 木材裁切設備的夾持裝置及木材裁切設備

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3228224C2 (de) * 1982-07-28 1986-04-03 Maschinenfabrik Esterer AG, 8262 Altötting Vorrichtung zum Zuführen von Holz
FI72071C (fi) * 1983-08-03 1987-04-13 Kauko Rautio Anordning foer matning av traedstammar.
AT380423B (de) * 1984-03-05 1986-05-26 Schilcher Josef Masch Vorrichtung zum ablaengen von holz
GB2170444B (en) * 1985-01-31 1988-10-19 Kauko Rautio Apparatus for feeding a tree trunk
CN117774059B (zh) * 2024-02-26 2024-08-06 漳州欧凯家具有限公司 一种全方位加工家具板材的数控机床

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821220A (en) * 1954-02-01 1958-01-28 Thomas W Nicholson Log feed mechanism
US3089576A (en) * 1960-12-16 1963-05-14 Signode Steel Strapping Co Locating device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821220A (en) * 1954-02-01 1958-01-28 Thomas W Nicholson Log feed mechanism
US3089576A (en) * 1960-12-16 1963-05-14 Signode Steel Strapping Co Locating device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373563A (en) * 1974-07-30 1983-02-15 Alan Kenyon Sawing of lumber from logs
US4453406A (en) * 1980-12-18 1984-06-12 Behringwerke Aktiengesellschaft Device for the transport of test specimens in strip form to a measuring apparatus
US5024572A (en) * 1985-07-16 1991-06-18 Kao Corporation Goods handling method and apparatus thereof
US5382154A (en) * 1992-04-27 1995-01-17 Rheon Automatic Machinery Co., Ltd. Method and device for aligning and bending individual round elongated dough pieces
US5421714A (en) * 1992-04-27 1995-06-06 Rheon Automatic Machinery Co., Ltd. Device for aligning and bending individual round elongated dough pieces
WO2003011539A1 (en) * 2001-08-01 2003-02-13 Roberta Mancianti Automatic multi band saw
US7631748B2 (en) 2005-01-06 2009-12-15 Usnr/Kockums Cancar Company Conveyor system
US20060144675A1 (en) * 2005-01-06 2006-07-06 Mitchell Rory M Conveyor system
US20100044187A1 (en) * 2005-01-06 2010-02-25 Mitchell Rory M Conveyor system
US8205739B2 (en) 2005-01-06 2012-06-26 Usnr/Kockums Cancar Company Conveyor system
US20090000103A1 (en) * 2007-06-28 2009-01-01 Crown Equipment Corporation Manufacturing cell and elements of the cell
US8108989B2 (en) 2007-06-28 2012-02-07 Crown Equipment Corporation Manufacturing cell and elements of the cell
US8544159B2 (en) 2007-06-28 2013-10-01 Crown Equipment Corporation Methods of manufacturing parts using a manufacturing cell
CN105540215A (zh) * 2016-01-22 2016-05-04 东莞市誉铭新精密技术股份有限公司 Ccd检测机的定位装置
TWI720329B (zh) * 2018-07-20 2021-03-01 昌鉅機械股份有限公司 木材裁切設備的夾持裝置及木材裁切設備
CN110625717A (zh) * 2019-10-28 2019-12-31 四川麦笠机械设备有限公司 一种制备纤维化竹单板的连续自动化机组设备
CN110625717B (zh) * 2019-10-28 2023-09-15 四川麦笠机械设备有限公司 一种制备纤维化竹单板的连续自动化机组设备

Also Published As

Publication number Publication date
CH495201A (de) 1970-08-31
NL6909021A (xx) 1970-09-17
DE1913249A1 (de) 1970-09-17
CS166250B2 (xx) 1976-02-27
YU123769A (sr) 1973-02-28
AT307004B (de) 1973-05-10
FI53409B (xx) 1978-01-31
FR2034962A1 (xx) 1970-12-18
AT293710B (de) 1971-10-25
GB1257560A (xx) 1971-12-22
FI53409C (fi) 1978-05-10
SE346933B (xx) 1972-07-24

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