CN206999211U - Numerical control non-fastening-shaft rotating cutter - Google Patents
Numerical control non-fastening-shaft rotating cutter Download PDFInfo
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- CN206999211U CN206999211U CN201720813240.2U CN201720813240U CN206999211U CN 206999211 U CN206999211 U CN 206999211U CN 201720813240 U CN201720813240 U CN 201720813240U CN 206999211 U CN206999211 U CN 206999211U
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- 239000011120 plywood Substances 0.000 description 3
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Abstract
The utility model discloses a kind of numerical control non-fastening-shaft rotating cutter,Including support,Rotating cutting device,Single roller arrangement,Double roller device and PLC frequency-changing control systems,It is characterized in that plate nose bar device is provided between rotating cutting device and single roller arrangement,The support upper end at rotating cutting device both ends is provided with fixed mount,Fixed mount is provided with tool-post structure revolving sleeve,Incline track and single roller feed drive gearing,Nose bar slideway is provided with the inside of fixed mount,Rotating cutting device front portion is connected with tool-post structure revolving sleeve,Rear portion is hinged with power transmission shaft,Both ends are connected through double roller feed screw with the double roller device that support is provided with respectively,Single roller arrangement both ends are connected with incline track respectively,Single roller support is connected with single roller feed drive gearing,Double roller device and single roller feed drive gearing control through PLC frequency-changing control systems respectively,The utility model has structure novel,Stable performance,Rotary-cut is gentle,Rotary-cut precision is high,The advantages that veneer high yield rate.
Description
Technical field
Woodworking machinery technical field is the utility model is related to, specifically a kind of numerical control non-fastening-shaft rotating cutter.
Background technology
It is well known that in recent years because forest is deficient, the log diameter grade for plywood production is smaller, plus many plantations
Wood is also used for plywood production, and the production log diameter grade of the raw material of such plywood production than before tapers into, using biography
System technique single clamping shaft or double card axle production veneer, relative production cost and production efficiency are relatively low, are not suitable with current production
Demand, numerical control non-fastening-shaft rotating cutter is devised based on the exploitation of above reason, traditional rotary trunk-layer stripping machine without clamper passes through three live-rollers
The rotation of jam-packed log carries out rotary-cut, and the substantive deficiency of this structure is：
First, the nose bar frame front end due to former rotary trunk-layer stripping machine without clamper above blade is provided with nose bar roller, nose bar roller diameter
According to the smaller the better on wood cutting principle, but due to the limitation of nose bar roller intensity and bearing size, nose bar roller diameter one
As both greater than 80MM, so single roller with log is cylindrical is in contact, certain sheet separation that goes out is left with the knife back again, this structure
Single roller center line is all higher by blade 15mm or so, and it is too high that the contact squeeze area of so single roller and log is all higher by blade, to rotary-cut
Veneer and do not produce extruding truly, the Veneer quality that rotary-cut goes out is very poor.
2nd, log diameter during rotary-cut tapers into, and radius of curvature tapers into, the contact zone of single roller and log with
Diameter diminishes, and contact point gradually uprises, and the Veneer quality of such rotary-cut is poor, and surface smoothness is low, and the big veneer of thickness is easy
Produce loose side dorsal fissure, also, the wooden hard soft difference of rotary-cut different tree species, the veneer thickness error produced also compared with
Greatly, therefore, up to the present, the veneer of no clip-axes incision on the market does not greatly reach the matter for producing high-grade glued board
Amount requires that especially Veneer quality is worse when rotary-cut is to path.
3rd, for log in rotary-cut, because motor is with constant ejecting plate speed rotary-cut, when reel very little, feed speed is very
It hurry up, impulsive force is larger, has had a strong impact on the service life of single double roller.
The content of the invention
The purpose of this utility model is solve the deficiencies in the prior art, there is provided a kind of structure novelty, stable performance, operation
Facilitate, rotary-cut is gentle, rotary-cut precision height, the numerical control non-fastening-shaft rotating cutter of veneer high yield rate, service life of equipment length.
Technical scheme is used by the utility model solves its technical problem：
A kind of numerical control non-fastening-shaft rotating cutter, including support, rotating cutting device, single roller arrangement, double roller device and PLC VFC
System, the double roller device are slidably connected through secondary guide rail and the slide of paying that support is provided with, it is characterised in that the rotating cutting device
It is provided with plate nose bar device between single roller arrangement, the support upper end at the rotating cutting device both ends is provided with fixed mount, on the fixed mount
Provided with tool-post structure revolving sleeve, incline track and single roller feed drive gearing, nose bar slideway, the rotation are provided with the inside of the fixed mount
Knife system front portion both ends are connected through tool-post structure with tool-post structure revolving sleeve respectively, and rear portion both ends are mutually cut with scissors with power transmission shaft respectively
Connect, the double roller device both ends are connected through double roller feed screw with the double roller device that support is provided with respectively, single roller dress
Put both ends to be slidably connected with incline track through single roller support respectively, single roller support is entered through single transmission roller feed screw and single roller
It is connected to transmission device, the double roller device and single roller feed drive gearing control through PLC frequency-changing control systems respectively, described
Plate nose bar device include nose bar frame, nose bar gyroaxis, plate nose bar, nose bar fixed plate, nose bar trip bolt, nose bar opening and closing cylinder,
Nose bar folding pivoted frame, nose bar Rotational eccentricity set and support member, the nose bar frame front end are provided with plate nose bar and nose bar fixed plate, institute
State plate nose bar to be fixed on nose bar frame through nose bar fixed plate and nose bar trip bolt, the nose bar frame rear portion is provided with nose bar folding oil
Cylinder, rear portion both ends are respectively equipped with nose bar Rotational eccentricity set, and anterior both ends are fixedly connected with support member respectively, the nose bar revolution
After axle passes through nose bar frame, its both ends is covered through nose bar Rotational eccentricity and bearing is fixedly connected with fixed mount, the support member lower end
It is slidably connected with nose bar slideway, the nose bar opening and closing cylinder is hinged with the bearing being fixed on nose bar frame, the nose bar folding
The expansion link of oil cylinder is hinged with the nose bar folding pivoted frame being fixed on nose bar gyroaxis, and the nose bar opening and closing cylinder becomes with PLC
Frequency control system is connected, and in favor of driving nose bar folding pivoted frame to rotate by nose bar opening and closing cylinder, drives the rotation of nose bar gyroaxis
Turning, nose bar gyroaxis drives nose bar frame to be moved forward and backward along nose bar slideway under the wobbler action that nose bar Rotational eccentricity covers, and then
Adjustment plate nose bar side and rotary knife sword horizontal plane relative position, no matter so log diameter change much, plate nose bar and rotation
The knife extruding rotary-cut of the veneer formation to rounding truly all the time, is obtained for the finish of the both ends of the surface of veneer
Significantly improve, reduce the deficiency that loose side produces dorsal fissure, thoroughly solve no clip-axes incision Veneer quality reality not up to standard
Matter technical problem.
Support member described in the utility model is formed by heightening screw rod, slide and locking nut, it is described heighten screw rod according to
Secondary be coaxially made up of support bulb, spiro rod section and rotation section, and the slide lower end is slidably connected with nose bar slideway, described to heighten
For screw rod through supporting bulb to be connected with the spherical groove that slide is provided with, described heighten is threaded with nose bar frame and lock on screw rod
Tight nut, the nose bar frame is fixed on through locking nut to be heightened on screw rod, to reach the rotation section that screw rod is heightened by rotation, is made
Nose bar frame rises or falls along spiro rod section, reaches adjustment plate nose bar and relative altitude of the rotary knife blade in vertical plane, ensures
The precision of Veneer Cutting.
The utility model can be provided with thickness of slab adjusting means on the nose bar frame, and it is pre- that the thickness of slab adjusting means includes thickness of slab
If location-plate, thickness of slab preset cylinder, thickness of slab presets limit body and thickness of slab presets adjusting screw rod I and thickness of slab presets adjusting screw rod
II, the thickness of slab is preset limit body and is fixed on nose bar gyroaxis, and the thickness of slab presets limit body bottom and is provided with the default tune of thickness of slab
Screw threaded aperture is saved, the thickness of slab presets adjusting rod I and thickness of slab is preset and is bolted with thickness of slab locking nut on adjusting screw rod II, described
Thickness of slab presets adjusting rod I and the default adjusting screw rod II of the thickness of slab is preset limit body with thickness of slab respectively and is threadedly coupled, and through thickness of slab
Locking nut positions, and the other end and thickness of slab of the default adjusting rod I of the thickness of slab or the default adjusting screw rod II of the thickness of slab are presetting
The position inconsistent positioning of plate, the thickness of slab are preset location-plate and are fixed on the expansion link of the default cylinder of thickness of slab, and the thickness of slab presets gas
Cylinder is fixed on nose bar frame, the thickness of slab preset cylinder through PLC frequency-changing control systems control, in favor of according to a log inside and outside
Hardness is different, presets two knife door gaps between plate nose bar and rotary knife, in first peeler log, the band dynamic pressure of nose bar opening and closing cylinder
Chi gyroaxis rotates, and thickness of slab presets cylinder and drives the default location-plate of thickness of slab to move left and right, and thickness of slab is preset location-plate and the plate
The default adjusting rod I of thickness is inconsistent, and when log diameter change is small, PLC frequency-changing control systems adjust rounding thickness, nose bar again
Opening and closing cylinder drives the rotation of nose bar gyroaxis, and thickness of slab presets cylinder and drives the default location-plate of thickness of slab to move left and right, and presets thickness of slab
Location-plate and the thickness of slab preset the inconsistent carry out rotary-cut of adjusting rod II, no matter so log diameter change is much, plate nose bar with
The rotary knife extruding rotary-cut of the veneer formation to rounding truly all the time, further increase the rotary-cut quality of veneer.
The utility model can be provided with straightness regulating device in the plate nose bar rear end, and the straightness regulating device uses
Linearity screw rod, be provided with threaded perforations along plate nose bar rectilinear direction linear array on the nose bar frame, the linearity screw rod with
After threaded perforations connection, end and plate nose bar rear end are inconsistent, to reach the linearity by linearity screw rod adjustable plate nose bar
Starting relative position with plate nose bar relative to rotary knife, ensure that the rotary-cut quality of veneer significantly.
By lower surface, gradually upward end slope extends and forms inclined-plane for plate nose bar front end described in the utility model, with the side of reaching
Just single roller to the log of smaller diameter clamp the effect of rotary-cut.
Single roller arrangement described in the utility model includes single transmission roller, single transmission roller gear, single-roll drive motor, list
Roller feed drive gearing, single roller workbench and single roller support, single roller feed drive gearing include single transmission roller feed servo
Motor, single transmission roller feeding transmission case, single transmission roller feeding transmission turbine and worm, single transmission roller feeding transmission bar, the patrilineal line of descent with only one son in each generation
Dynamic roller is fixed on single roller workbench through bearing, bearing spider, and single transmission roller drives through single transmission roller gear, to reach
Transmission rigidity is good, small effect is fluctuated in stability of rotation, rotation, veneer thickness error when being advantageous to reduce rotary-cut, the single-drive
Roller gear transmission case drives through single transmission roller electric rotating machine, and the single transmission roller gear and single transmission roller electric rotating machine are equal
It is fixed on single roller workbench, single roller workbench both ends are fixedly connected with single roller support respectively, the single transmission roller feeding
Transmission bar is connected through the single transmission roller feeding transmission worm gear worm screw in single transmission roller feeding transmission case with single transmission roller feed screw
Connect, the single transmission roller feed screw drives through single transmission roller feed servo motor, the single transmission roller feed servo motor warp
PLC frequency-changing control systems control, so that PLC frequency-changing control systems control single transmission roller feed servo motor action, driving patrilineal line of descent with only one son in each generation
Dynamic roller feeding transmission worm gear worm screw and single transmission roller feeding transmission case rotate and drive the single transmission roller at single transmission roller both ends to feed
Leading screw rotates, and then drives single roller workbench 40 to be moved along incline track, meanwhile, PLC frequency-changing control systems control single-drive
Roller gear transmission case drives single transmission roller rotation, rotation clamping is carried out to log, due to passing through both ends during single roller movable workbench
Single roller support along incline track linear slide and single transmission roller feed screw swivel feeding, ensure that single transmission roller or so enters
To synchronization, reduce rotating gap, improve Veneer quality.
Double roller device described in the utility model includes double roller workbench, double roller device, double live-rollers and double roller actuator servo
Motor, the double roller device include double roller table feed servomotor, power transmission shaft, double roller feed screw, double roller gear
Transmission case and geared feed case, the double roller workbench are provided with double roller table feed servomotor, the double roller workbench
One end of corresponding single transmission roller is provided with double live-rollers, and double live-rollers drive through double roller actuator servo motor, and the double roller passes
Dynamic servomotor controls through PLC frequency-changing control systems, and the power transmission shaft both ends are connected with double roller gear respectively,
The double roller gear drives through double roller table feed servomotor, and the double roller gear is through geared feed case
The feed gear wheel and spiral bevel gear being inside meshed are connected with double roller feed screw, are controlled by PLC frequency-changing control systems double
Roller table feed servomotor rotates, and drives double roller movable workbench, makes the double live-rollers and single-drive on double roller workbench
Roller synchronous rotary clamps log.
Variable-frequency motor is respectively adopted in double roller actuator servo motor and single transmission roller feed servo motor described in the utility model,
So that in the firm feed of rotary-cut, speed is maintained at low speed, and cutting speed is gradually lifted after complete penetration of a cutting tool, is set when reel is reduced to
During fixed diameter, cutting speed is gradually reduced, and realizes speed change rotary-cut, has reached that rotary-cut is gentle, and lathe impulsive force is small, carries significantly
The high service life and rotary-cut quality of machine tool element.
Rotating cutting device described in the utility model includes tool-post structure, dress knife box, rotary knife, hold(ing)-down clip, push type broach cylinder, tune relief angle gear
Case, adjust relief angle transmission bar, adjust brail and tool-post structure revolving sleeve after relief angle eccentric cam, tune, the tool-post structure front top is set
There is dress knife box, rear end is hinged with brail after tune, rotary knife is provided with the dress knife box, dress knife box is through being fixed on tool-post structure
Hold(ing)-down clip is mutually fixed, and is connected in the middle part of the hold(ing)-down clip with tool-post structure, and top and dress knife box are inconsistent, and bottom is with being fixed on knife rest
Push type broach cylinder on body is inconsistent, and the push type broach cylinder is connected through hydraulic buttery valve and hydraulic pump with PLC frequency-changing control systems, with profit
Acted in by PLC frequency-changing control systems control hydraulic pump, the compression of drive Driven by Hydraulic Cylinder hold(ing)-down clip or release, after the tune
Angle eccentric cam, which is enclosed on, to be adjusted on relief angle transmission bar, the tune relief angle eccentric cam outside and tool-post structure revolving sleeve pivot bush unit, institute
Brail is fixedly connected after stating tool-post structure revolving sleeve lower end and adjusting, and the tune relief angle transmission bar is through adjusting relief angle gear-box to enter with gear
To the feed gear wheel in case be meshed drive rotation, in favor of feed gear wheel rotate drive spiral bevel gear rotate when, spiral
Bevel gear drives double roller feed screw to rotate, while double roller feed screw drags double roller movable workbench, feed gear wheel also band
It is dynamic to adjust relief angle gear-box to rotate, adjust relief angle eccentric cam to rotate by adjusting relief angle gear-box to drive, adjust tool-post structure revolving sleeve
Tool-post structure revolution is driven under the wobbler action of relief angle eccentric cam to change relief angle change, makes whole relief angle change with reel diameter
Change change automatically, solve log diameter it is big when relief angle it is constant, the defects of contact surface is big, and wearing resistance is big, simultaneously, moreover it is possible to
With being gradually reduced for wooden footpath, relief angle significantly improves the surface smoothness of veneer also with tapering into.
The utility model can also be provided with described single roller support front end linearity array and beat reel cylinder, described to beat reel gas
Cylinder controls through PLC frequency-changing control systems, and when log reel very little, PLC frequency-changing control systems, which instruct, plays the action of reel cylinder
Reel is impacted, reel is destroyed.
The utility model is due to using said structure, having structure novelty, stable performance, easy to operate, rotary-cut is gentle, rotation
Cut precision height, veneer high yield rate, the advantages that service life of equipment is long.
Brief description of the drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is Fig. 1 left view.
Fig. 3 is Fig. 1 top view.
Fig. 4 is the structural representation of plate nose bar device and rotating cutting device in the utility model.
Fig. 5 is Fig. 4 top view.
Fig. 6 is Fig. 4 right view.
Rotary-cut state diagram when Fig. 7 is the utility model log big footpath.
Rotary-cut state diagram when Fig. 8 is the utility model log path.
Fig. 9 is the structural representation of single roller arrangement.
Figure 10 is Fig. 9 left view.
Figure 11 is Fig. 9 top view.
Figure 12 is the feed transmission structure signal of support in the utility model, single roller feed drive gearing and double roller device
Figure.
Figure 13 is Figure 12 left view.
Figure 14 is Figure 12 top view.
Figure 15 is the structural representation of the double roller device in double roller device.
Figure 16 is the structural representation of support member in the utility model.
Figure 17 is the sectional view of C-C in Fig. 5.
Figure 18 is the sectional view of B-B in Fig. 5.
Figure 19 is the profile of J-J in Figure 17（Thickness of slab adjusting means）.
Reference：Support 1, rotating cutting device 2, single roller arrangement 3, double roller device 4, PLC frequency-changing control systems 5, plate nose bar
Device 6, fixed mount 7, tool-post structure revolving sleeve 8, incline track 9, single roller feed drive gearing 10, nose bar slideway 11, tool-post structure return
Pivoted housing 12, power transmission shaft 13, double roller feed screw 14, double roller device 15, single roller support 16, incline track 17, single transmission roller
Feed screw 18, nose bar frame 19, nose bar gyroaxis 20, plate nose bar 21, nose bar fixed plate 22, nose bar trip bolt 23, nose bar are opened
Oil cylinder 24, nose bar folding pivoted frame 25, nose bar Rotational eccentricity is closed to cover 26, support member 27, heighten screw rod 28, slide 29, locking screw
Mother 30, thickness of slab preset location-plate 31, thickness of slab presets cylinder 32, thickness of slab presets limit body 33, thickness of slab presets adjusting screw rod I 34, plate
The default adjusting screw rod II 35 of thickness, linearity screw rod 36, single transmission roller 37, single transmission roller gear 38, single-roll drive motor
39th, single roller workbench 40, single transmission roller feed servo motor 41, single transmission roller feeding transmission case 42, single transmission roller feeding transmission
Turbine and worm 43, single transmission roller feeding transmission bar 44, double roller workbench 45, double roller device 15, double live-rollers 47, double roller transmission are watched
Take motor 48, double roller device 15, double roller table feed servomotor 49, power transmission shaft 50, double roller feed screw 51, double roller
Gear 52, geared feed case 53, feed gear wheel 54, spiral bevel gear 55, tool-post structure 56, dress knife box 57, rotary knife 58, pressure
Knife plate 59, push type broach cylinder 60, adjust relief angle gear-box 61, adjust relief angle transmission bar 62, adjust relief angle eccentric cam 63, adjust after brail 64,
Tool-post structure revolving sleeve 65, make reel cylinder 66, single roller feed drive gearing 67.
Embodiment
The utility model is illustrated with reference to the accompanying drawings and examples.
As shown in drawings, a kind of numerical control non-fastening-shaft rotating cutter, including support 1, rotating cutting device 2, single roller arrangement 3, double roller dress
4 and PLC frequency-changing control systems 5 are put, the double roller device 4 is slidably connected through secondary guide rail and the slide of paying that support 1 is provided with, and it is special
Sign is to be provided with plate nose bar device 6, the upper end of support 1 at the both ends of rotating cutting device 2 between the rotating cutting device 2 and single roller arrangement 3
Provided with fixed mount 7, the fixed mount 7 is provided with tool-post structure revolving sleeve 8, incline track 9 and single roller feed drive gearing 10, described
The inner side of fixed mount 7 is provided with nose bar slideway 11, and the 2 anterior both ends of rotating cutting device are respectively through tool-post structure and the phase of tool-post structure revolving sleeve 12
Connection, rear portion both ends are hinged with power transmission shaft 13 respectively, the double roller device both ends respectively through double roller feed screw 14 with
The double roller device 15 that support is provided with is connected, and single both ends of roller arrangement 3 are slided through single roller support 16 with incline track 17 respectively
Dynamic connection, single roller support 16 are connected through single transmission roller feed screw 18 with single roller feed drive gearing, the double roller dress
Put 15 and single roller feed drive gearing controlled respectively through PLC frequency-changing control systems 5, the plate nose bar device 6 include nose bar frame 19,
Nose bar gyroaxis 20, plate nose bar 21, nose bar fixed plate 22, nose bar trip bolt 23, nose bar opening and closing cylinder 24, nose bar folding pivoted frame
25th, nose bar Rotational eccentricity set 26 and support member 27, the front end of nose bar frame 19 are provided with plate nose bar 21 and nose bar fixed plate 22, institute
State plate nose bar 21 to be fixed on nose bar frame 19 through nose bar fixed plate 22 and nose bar trip bolt 23, the rear portion of nose bar frame 19 is provided with
Nose bar opening and closing cylinder 24, rear portion both ends are respectively equipped with nose bar Rotational eccentricity set 26, and anterior both ends are fixed with support member 27 respectively
Connection, the nose bar gyroaxis 20 pass through nose bar frame after, its both ends fixes through nose bar Rotational eccentricity set 26 and bearing and fixed mount 7
Connection, the lower end of support member 27 are slidably connected with nose bar slideway 11, and the nose bar opening and closing cylinder 24 is with being fixed on nose bar frame
Bearing 28 on 19 is hinged, the expansion link of the nose bar opening and closing cylinder 24 and the nose bar folding being fixed on nose bar gyroaxis 20
Pivoted frame 25 is hinged, and the nose bar opening and closing cylinder 24 is connected with PLC frequency-changing control systems 5, in favor of passing through nose bar folding oil
Cylinder 24 drives nose bar folding pivoted frame 25 to rotate, and drives nose bar gyroaxis 20 to rotate, nose bar gyroaxis 20 is in nose bar Rotational eccentricity set
Under 26 wobbler action, nose bar frame 19 is driven to be moved forward and backward along nose bar slideway 11, and then the side of adjustment plate nose bar 21 and rotary knife
Sword horizontal plane relative position, though so log diameter change it is much, plate nose bar 21 and rotary knife are all the time to rounding
Veneer forms extruding rotary-cut truly, is obtained for the finish of the both ends of the surface of veneer and significantly improves, reduces list
Back produces the deficiency of dorsal fissure, thoroughly solves the problems, such as no clip-axes incision Veneer quality Substantial technical not up to standard.
Support member 27 described in the utility model is formed by heightening screw rod 28, slide 29 and locking nut 30, the tune
High screw rod 28 is coaxially made up of support bulb, spiro rod section and rotation section successively, and the lower end of slide 29 is slided with nose bar slideway 11
Dynamic connection, the screw rod 28 of heightening are described to heighten screw rod 28 through supporting bulb to be connected with the spherical groove that slide 29 is provided with
On be threaded with nose bar frame 19 and locking nut 30, the nose bar frame 19 is fixed on through locking nut 30 to be heightened on screw rod 28,
To reach the rotation section that screw rod 28 is heightened by rotation, nose bar frame 19 is risen or fallen along spiro rod section, reach adjustment plate pressure
Chi 21 and relative altitude of the rotary knife blade in vertical plane, ensure the precision of Veneer Cutting.
The utility model can be provided with thickness of slab adjusting means on the nose bar frame 19, and the thickness of slab adjusting means includes thickness of slab
Default location-plate 31, thickness of slab preset cylinder 32, thickness of slab presets limit body 33 and at least two thickness of slab presets the and of adjusting screw rod I 34
Thickness of slab presets adjusting screw rod II 35, and the thickness of slab is preset limit body 33 and is fixed on nose bar gyroaxis 20, and the thickness of slab is limited in advance
The position bottom of body 33 is provided with thickness of slab and presets adjusting screw rod screwed hole, and the thickness of slab presets adjusting rod I 34 and thickness of slab presets adjusting screw rod
Thickness of slab locking nut is bolted with II 35, the thickness of slab presets adjusting rod I 34 and the thickness of slab is preset adjusting screw rod II 35 and distinguished
Limit body 33 is preset with thickness of slab to be threadedly coupled, and is positioned through thickness of slab locking nut, and the thickness of slab presets adjusting rod I 34 or the plate
The other end of the default adjusting screw rod II 35 of thickness presets 31 inconsistent positioning of location-plate with thickness of slab, and it is solid that the thickness of slab presets location-plate 31
It is scheduled on thickness of slab to preset on the expansion link of cylinder 32, the thickness of slab is preset cylinder 32 and is fixed on nose bar frame 19, and the thickness of slab is preset
Cylinder 32 controls through PLC frequency-changing control systems 5, so that inside and outside hardness is different according to a log, presets plate nose bar and rotary knife
Between two knife door gaps, in first peeler log, nose bar opening and closing cylinder 24 drives nose bar gyroaxis 20 to rotate, and thickness of slab is preset
Cylinder 32 drives thickness of slab to preset location-plate 31 and moved left and right, and thickness of slab is preset location-plate 31 and presets adjusting rod I 34 with the thickness of slab
Inconsistent, when log diameter change is small, PLC frequency-changing control systems 5 adjust rounding thickness, the band of nose bar opening and closing cylinder 24 again
Dynamic pressure chi gyroaxis 20 rotates, and thickness of slab presets cylinder 32 and drives the default location-plate 31 of thickness of slab to move left and right, and makes the default positioning of thickness of slab
Plate 31 presets the inconsistent carry out rotary-cut of adjusting rod II 35 with the thickness of slab, no matter so log diameter changes much, plate nose bar 21
Form extruding rotary-cut truly to the veneer of rounding all the time with rotary knife, further increase the rotary-cut matter of veneer
Amount.
The utility model can be provided with straightness regulating device in the rear end of plate nose bar 21, and the straightness regulating device is adopted
With linearity screw rod 36, threaded perforations, the straight line are provided with along the rectilinear direction linear array of plate nose bar 21 on the nose bar frame 19
After degree screw rod 36 is connected with threaded perforations, end and the rear end of plate nose bar 21 are inconsistent, to reach by linearity screw rod adjustable plate
The linearity and plate nose bar of nose bar ensure that the rotary-cut quality of veneer significantly relative to the starting relative position of rotary knife.
By lower surface, gradually upward end slope extends and forms inclined-plane for the front end of plate nose bar 21 described in the utility model, to reach
Single roller is facilitated to the log of smaller diameter clamp the effect of rotary-cut.
Single roller arrangement described in the utility model includes single transmission roller 37, single transmission roller gear 38, single-roll drive electricity
Machine 39, single roller feed drive gearing 67, single roller workbench 40 and single roller support 16, single roller feed drive gearing include patrilineal line of descent with only one son in each generation
Dynamic roller feed servo motor 41, single transmission roller feeding transmission case 42, single transmission roller feeding transmission turbine and worm 43, single transmission roller enter
To transmission bar 44, the single transmission roller 37 is fixed on single roller workbench 40 through bearing, bearing spider, and single transmission roller 37 is through patrilineal line of descent with only one son in each generation
Dynamic roller gear transmission case 38 drives, and to have the function that good transmission rigidity, stability of rotation, rotation fluctuation are small, is advantageous to reduce rotation
Veneer thickness error when cutting, the single transmission roller gear 38 drive through single transmission roller electric rotating machine 39, the single-drive
Roller gear transmission case 38 and single transmission roller electric rotating machine 39 are each attached on single roller workbench 40, single both ends of roller workbench 40
It is fixedly connected respectively with single roller support 16, the single transmission roller feeding transmission bar 44 is through the list in single transmission roller feeding transmission case 42
Live-roller feeding transmission worm gear worm screw 43 is connected with single transmission roller feed screw 18, and the single transmission roller feed screw 18 is through list
Live-roller feed servo motor 39 drives, and the single transmission roller feed servo motor 41 controls through PLC frequency-changing control systems 5, with
Act PLC frequency-changing control systems control single transmission roller feed servo motor 41, driving single transmission roller feeding transmission worm gear worm screw
43 and single transmission roller feeding transmission case 42 rotate and drive the single transmission roller feed screw 18 at the both ends of single transmission roller 37 to rotate, and then
Single roller workbench 40 is driven to be moved along incline track 17, meanwhile, PLC frequency-changing control systems 5 control single transmission roller gear drive
Case 38 drives single transmission roller rotation, carries out rotation clamping to log, passes through single roller at both ends when being moved due to single roller workbench 40
Support 16 ensure that single transmission roller 37 or so enters along the linear slide of incline track 17 and single transmission roller feed screw swivel feeding
To synchronization, reduce rotating gap, improve Veneer quality.
Double roller device described in the utility model includes double roller workbench 45, double roller device 15, double live-rollers 47 and double roller and passed
Dynamic servomotor 48, the double roller device 15 include double roller table feed servomotor 49, power transmission shaft 50, double roller feeding
Leading screw 51, double roller gear 52 and geared feed case 53, the double roller workbench 45 are watched provided with double roller table feed
Motor 49 is taken, one end of the corresponding single transmission roller of the double roller workbench 45 is provided with double live-rollers 47, and double live-rollers 47 are through double
Roller actuator servo motor 48 drives, and the double roller actuator servo motor 48 controls through PLC frequency-changing control systems 5, and the power passes
The both ends of moving axis 50 are connected with double roller gear 52 respectively, and the double roller gear 52 is watched through double roller table feed
Take motor 49 to drive, feed gear wheel 54 and screw conic tooth of the double roller gear 52 through being meshed in geared feed case 53
Wheel 55 is connected with double roller feed screw 51, controls double roller table feed servomotor 49 to revolve by PLC frequency-changing control systems 5
Turn, drive double roller workbench 45 to move, make double live-rollers 47 and single transmission roller synchronous rotary clamping original on double roller workbench 45
Wood.
Frequency conversion is respectively adopted in double roller actuator servo motor 49 and single transmission roller feed servo motor 41 described in the utility model
Motor, so that in the firm feed of rotary-cut, speed is maintained at low speed, and cutting speed is gradually lifted after complete penetration of a cutting tool, when reel subtracts
During small diameter to setting, cutting speed is gradually reduced, and realizes speed change rotary-cut, has reached that rotary-cut is gentle, and lathe impulsive force is small,
Substantially increase the service life and rotary-cut quality of machine tool element.
Rotating cutting device 2 described in the utility model includes tool-post structure 56, dress knife box 57, rotary knife 58, hold(ing)-down clip 59, push type broach cylinder
60th, relief angle gear-box 61 is adjusted, relief angle transmission bar 62 is adjusted, adjusts brail 64 and tool-post structure revolving sleeve after relief angle eccentric cam 63, tune
65, the front top of tool-post structure 56 is provided with dress knife box 57, and rear end is hinged with brail 64 after tune, is set in the dress knife box 57
There is rotary knife 58, dress hold(ing)-down clip 59 phase of the knife box 57 through being fixed on tool-post structure 56 is fixed, the middle part of hold(ing)-down clip 59 and tool-post structure
56 are connected, and top and dress knife box 57 are inconsistent, and bottom and the push type broach cylinder 60 being fixed on tool-post structure 56 are inconsistent, the push type broach
Cylinder 60 is connected through hydraulic buttery valve and hydraulic pump with PLC frequency-changing control systems, in favor of being controlled by PLC frequency-changing control systems
Hydraulic pump acts, and drives compression or the release of Driven by Hydraulic Cylinder hold(ing)-down clip 59, and the tune relief angle eccentric cam 63 is enclosed on tune relief angle
On transmission bar 62, the outside of tune relief angle eccentric cam 63 and the pivot bush unit of tool-post structure revolving sleeve 65, the tool-post structure revolving sleeve
65 lower ends are fixedly connected with brail 64 after tune, and the tune relief angle transmission bar 62 is through adjusting relief angle gear-box 61 and geared feed case 53
Interior feed gear wheel 54 be meshed drive rotation, in favor of feed gear wheel 54 rotate drive spiral bevel gear 55 rotate when, spiral shell
Rotation bevel gear 55 drives double roller feed screw 51 to rotate, and while double roller feed screw 51 drags the movement of double roller workbench 40, enters
Also being driven to gear 54 adjusts relief angle gear-box 61 to rotate, and adjusts relief angle eccentric cam to rotate by adjusting relief angle gear-box 61 to drive, makes
Tool-post structure revolving sleeve drives tool-post structure revolution in the case where adjusting the wobbler action of relief angle eccentric cam to change relief angle change, after making entirely
Angle change change automatically with the change of reel diameter, solve log diameter it is big when relief angle it is constant, contact surface is big, and wearing resistance is big
The defects of, simultaneously, moreover it is possible to which, with being gradually reduced for wooden footpath, relief angle significantly improves any surface finish of veneer also with tapering into
Degree.
The utility model can also be provided with the described front end linearity array of single roller support 16 and beat reel cylinder 66, described to break wood
Core cylinder 66 controls through PLC frequency-changing control systems 5, and when log reel very little, PLC frequency-changing control systems instruct and beat reel gas
Cylinder action impact reel, reel is destroyed.
The utility model at work, first according to the veneer thickness of rotary-cut, presets two knife door gaps of plate nose bar,
Adjust the height of nose bar frame：Screw rod is heightened in rotary supporting part, nose bar frame is risen or fallen along screw rod is heightened, and then
Adjustment plate nose bar and relative altitude of the rotary knife blade in vertical plane are have adjusted, is then locked with locking nut, then pass through nose bar
Opening and closing cylinder driving nose bar folding pivoted frame rotation, drives the rotation of nose bar gyroaxis, nose bar gyroaxis covers in nose bar Rotational eccentricity
Under wobbler action, nose bar frame is driven to be moved forward and backward through support member along nose bar slideway, and then adjustment plate nose bar side and rotary knife
Sword horizontal plane relative position, though so log diameter change it is much, plate nose bar and rotary knife are all the time to the list of rounding
Plate shape is obtained for the finish of the both ends of the surface of veneer and significantly improved, reduce veneer into extruding rotary-cut truly
The back side produces the deficiency of dorsal fissure；
The linearity screw rod on nose bar frame is adjusted again, and linearity screw top is to plate nose bar, so that the linearity of plate nose bar begins
It is parallel with the linearity of rotary knife eventually, the rotary-cut quality of veneer is ensure that significantly；
Further according to log, inside and outside hardness is different, presets two knife door gaps of plate nose bar and rotary knife, that is, after adjusting nose bar frame
The thickness of slab in portion presets adjusting rod I and thickness of slab presets adjusting rod II, during adjustment, first starts PLC frequency-changing control systems, drives nose bar
Opening and closing cylinder drives the rotation of nose bar folding pivoted frame, and nose bar folding pivoted frame drives nose bar frame to rotate, makes thickness of slab through nose bar folding rotating shaft
After the default default adjusting rod II of adjusting rod I and thickness of slab leaves the default cylinder of thickness of slab, nose bar folding cylinder stops, you can manually to revolve
The thick default adjusting rod I of flap and thickness of slab preset adjusting rod II to preset two knife door gaps, are locked after mixing up with locking nut；Again
Secondary startup nose bar folding cylinder, resets nose bar frame, and thickness of slab presets cylinder and drives the default location-plate top of thickness of slab to be adjusted to thickness of slab is default
Pole I and thickness of slab preset adjusting rod II, so can be different according to the quality of log from outside to inside, adjust automatically peeling thickness,
Substantially increase the rotary-cut quality of veneer.
Before starting rotary-cut, in the operator control panel of PLC frequency-changing control systems, five sections of speed of ABCDE are set, are set simultaneously
Corresponding timber diameter, after frequency conversion speed is set, minimum reel diameter is set further according to timber situation, while set double
The distance of the automatic return of roller arrangement, after said procedure is set, start overwood, the veneer thickness of rotary-cut is wanted in selection, after overwood, is pressed
Rotary-cut start key in lower operator control panel, PLC frequency-changing control systems instruction double roller actuator servo motor, single-roll drive motor
Make, drive single transmission roller and double live-rollers to rotate, while PLC frequency-changing control systems control single transmission roller feed servo motor
Make, driving single transmission roller feeding transmission worm gear worm screw and single transmission roller feeding transmission case rotate and drive the list at single transmission roller both ends
Live-roller feed screw is rotated, and then drives single roller workbench to be moved along incline track, and rotation clamping is carried out to log, due to
By the incline track linear slide and single transmission roller feed screw swivel feeding at both ends during single roller movable workbench, list ensure that
Live-roller or so feeding is synchronous,
Due to feed gear wheel of the double roller gear through being meshed in geared feed case and spiral bevel gear with it is double
Roller feed screw double roller feed screw is connected, and double roller feed screw double roller feed screw drags double roller movable workbench, makes
Double live-rollers on double roller workbench clamping log synchronous with single transmission roller simultaneously drives log to rotate, and makes log in rotary-cut process
In, veneer is peeled into by the rotary-cut of rotary knife and the extruding of plate nose bar.
In the firm feed of peeler log, rotary-cut speed is maintained at low speed, and after the complete penetration of a cutting tool of log, cutting speed gradually carries
Rise, during rotary-cut, PLC frequency-changing control systems automatically control single roller feed drive gearing and double roller plant running, single roller
Feed drive gearing rotates through feed gear wheel drives spiral bevel gear to rotate, and spiral bevel gear drives double roller feed screw double roller to enter
Rotated to leading screw, drag double roller movable workbench, feed gear wheel, which also drives, adjusts relief angle bevel gear to rotate, and adjusts relief angle gear-box to drive
Adjust relief angle eccentric cam to rotate, make tool-post structure drive the revolution of tool-post structure revolving sleeve to become to change knife relief angle by brail after tune
Change, make whole rotary knife relief angle change change automatically with the change of reel diameter, solve log diameter it is big when relief angle it is constant, connect
The defects of contacting surface is big, and wearing resistance is big, simultaneously, moreover it is possible to which, with being gradually reduced for wooden footpath, relief angle significantly improves also with tapering into
The surface smoothness of veneer；
When reel is reduced to the diameter of setting, cutting speed is gradually reduced, PLC frequency-changing control system adjust automatically logs
Peeling thickness, that is, instruct nose bar opening and closing cylinder to drive the rotation of nose bar gyroaxis, and thickness of slab presets cylinder and drives thickness of slab to preset location-plate
Move left and right, thickness of slab is preset location-plate and preset the inconsistent carry out rotary-cut of adjusting rod II with the thickness of slab, no matter so log is straight
Footpath change is much, and plate nose bar and rotary knife form extruding rotary-cut truly to the both ends of the surface of the veneer of rounding all the time,
And speed change rotary-cut is also achieved, has reached that rotary-cut is gentle, and lathe impulsive force is small, substantially increase machine tool element uses the longevity
Life and rotary-cut quality.
When rounding is to minimum diameter, i.e. machine tool movement stopping work being entered, and return startup is started simultaneously at, in return mistake
The action of reel cylinder is played in the instruction of Cheng Zhong, PLC frequency-changing control system, and the reel of minor diameter is destroyed, when lathe reaches returning for setting
Stop during journey position, that is, complete a working cycles, then secondary overwood carries out a working cycles.
The utility model is due to using said structure, having structure novelty, stable performance, easy to operate, rotary-cut is gentle, rotation
Cut precision height, veneer high yield rate, the advantages that service life of equipment is long.
Claims (10)
1. a kind of numerical control non-fastening-shaft rotating cutter, including support, rotating cutting device, single roller arrangement, double roller device and PLC VFC system
System, the slide of paying that the double roller device is provided with through secondary guide rail and support are slidably connected, it is characterised in that the rotating cutting device with
Plate nose bar device is provided between single roller arrangement, the support upper end at the rotating cutting device both ends is provided with fixed mount, set on the fixed mount
There are tool-post structure revolving sleeve, incline track and single roller feed drive gearing, nose bar slideway, the rotary knife are provided with the inside of the fixed mount
Device front portion both ends are connected through tool-post structure with tool-post structure revolving sleeve respectively, and rear portion both ends are hinged with power transmission shaft respectively,
The double roller device both ends are connected through double roller feed screw with the double roller device that support is provided with respectively, single roller arrangement two
End is slidably connected through single roller support with incline track respectively, and single roller support passes through single transmission roller feed screw and the feeding of single roller
Dynamic device is connected, and the double roller device and single roller feed drive gearing control through PLC frequency-changing control systems respectively, the plate pressure
Chi device includes nose bar frame, nose bar gyroaxis, plate nose bar, nose bar fixed plate, nose bar trip bolt, nose bar opening and closing cylinder, nose bar
Folding pivoted frame, nose bar Rotational eccentricity set and support member, the nose bar frame front end are provided with plate nose bar and nose bar fixed plate, the plate
Nose bar is fixed on nose bar frame through nose bar fixed plate and nose bar trip bolt, and the nose bar frame rear portion is provided with nose bar opening and closing cylinder,
Rear portion both ends are respectively equipped with nose bar Rotational eccentricity set, and anterior both ends are fixedly connected with support member respectively, the nose bar gyroaxis
Through after nose bar frame, its both ends through nose bar Rotational eccentricity set and bearing be fixedly connected with fixed mount, the support member lower end and
Nose bar slideway is slidably connected, and the nose bar opening and closing cylinder is hinged with the bearing being fixed on nose bar frame, the nose bar folding oil
The expansion link of cylinder is hinged with the nose bar folding pivoted frame being fixed on nose bar gyroaxis, the nose bar opening and closing cylinder and PLC frequency conversions
Control system is connected.
2. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the support member is by heightening
Screw rod, slide and locking nut composition, the screw rod of heightening coaxially is made up of support bulb, spiro rod section and rotation section successively,
The slide lower end is slidably connected with nose bar slideway, and the screw rod of heightening is through supporting the spherical groove phase that bulb is provided with slide
Connection, described heighten are threaded with nose bar frame and locking nut on screw rod, the nose bar frame is fixed on through locking nut to be heightened
On screw rod.
3. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the nose bar frame is provided with thickness of slab
Adjusting means, the thickness of slab adjusting means include thickness of slab and preset the default cylinder of location-plate, thickness of slab, the default limit body of thickness of slab and plate
The default adjusting screw rod I of thickness and thickness of slab preset adjusting screw rod II, and the thickness of slab is preset limit body and is fixed on nose bar gyroaxis, described
Thickness of slab presets limit body bottom and is provided with the default adjusting screw rod screwed hole of thickness of slab, and the thickness of slab presets adjusting rod I and thickness of slab is preset and adjusted
Thickness of slab locking nut is bolted with section screw rod II, the thickness of slab presets adjusting rod I and the thickness of slab is preset adjusting screw rod II and distinguished
Limit body is preset with thickness of slab to be threadedly coupled, and is positioned through thickness of slab locking nut, and the thickness of slab presets adjusting rod I or the thickness of slab is pre-
If the other end of adjusting screw rod II presets the inconsistent positioning of location-plate with thickness of slab, it is pre- that the default location-plate of the thickness of slab is fixed on thickness of slab
If on the expansion link of cylinder, the thickness of slab is preset cylinder and is fixed on nose bar frame, the thickness of slab presets cylinder through PLC VFC
System controls.
4. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the plate nose bar rear end is provided with straight
Dimension adjusting means, the straightness regulating device use linearity screw rod, along plate nose bar rectilinear direction line on the nose bar frame
Property array is provided with threaded perforations, and after the linearity screw rod is connected with threaded perforations, end and plate nose bar rear end are inconsistent.
5. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the plate nose bar front end is by lower end
Gradually upward end slope extends to form inclined-plane in face.
6. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that single roller arrangement includes patrilineal line of descent with only one son in each generation
Dynamic roller, single transmission roller gear, single-roll drive motor, single roller feed drive gearing, single roller workbench and single roller support, institute
Stating single roller feed drive gearing includes single transmission roller feed servo motor, single transmission roller feeding transmission case, single transmission roller feeding biography
Dynamic turbine and worm, single transmission roller feeding transmission bar, the single transmission roller are fixed on single roller workbench through bearing, bearing spider,
Single transmission roller drives through single transmission roller gear, and the single transmission roller gear drives through single transmission roller electric rotating machine
Dynamic, the single transmission roller gear and single transmission roller electric rotating machine are each attached on single roller workbench, single roller work
Platform both ends are fixedly connected with single roller support respectively, and the single transmission roller feeding transmission bar is through the list in single transmission roller feeding transmission case
Live-roller feeding transmission worm gear worm screw is connected with single transmission roller feed screw, and the single transmission roller feed screw is through single transmission roller
Feed servo motor drives, and the single transmission roller feed servo motor controls through PLC frequency-changing control systems.
7. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the double roller device includes double roller
Workbench, double roller device, double live-rollers and double roller actuator servo motor, the double roller device include double roller table feed servo
Motor, power transmission shaft, double roller feed screw, double roller gear and geared feed case, the double roller workbench are provided with
Double roller table feed servomotor, one end that the double roller workbench corresponds to single transmission roller are provided with double live-rollers, double biographies
Dynamic roller drives through double roller actuator servo motor, and the double roller actuator servo motor controls through PLC frequency-changing control systems, the power
Both ends of the drive shaft is connected with double roller gear respectively, and the double roller gear is through double roller table feed servo electricity
Machine is driven, and feed gear wheel and spiral bevel gear of the double roller gear through being meshed in geared feed case are fed with double roller
Leading screw is connected.
A kind of 8. numerical control non-fastening-shaft rotating cutter according to claim 6 or 7, it is characterised in that the double roller actuator servo electricity
Variable-frequency motor is respectively adopted in machine and single transmission roller feed servo motor.
9. a kind of numerical control non-fastening-shaft rotating cutter according to claim 1, it is characterised in that the rotating cutting device includes knife rest
Body, dress knife box, rotary knife, hold(ing)-down clip, push type broach cylinder, tune relief angle gear-box, tune relief angle transmission bar, tune relief angle eccentric cam, tune relief angle
Pull bar and tool-post structure revolving sleeve, the tool-post structure front top are provided with dress knife box, and rear end is hinged with brail after tune, the dress
Rotary knife is provided with knife box, dress hold(ing)-down clip of the knife box through being fixed on tool-post structure is mutually fixed, the hold(ing)-down clip middle part and knife rest body phase
Connection, top and dress knife box are inconsistent, and bottom and the push type broach cylinder being fixed on tool-post structure are inconsistent, and the push type broach cylinder is through hydraulic pressure electricity
Magnet valve and hydraulic pump are connected with PLC frequency-changing control systems, and the tune relief angle eccentric cam, which is enclosed on, to be adjusted on relief angle transmission bar, described
Adjust and fixed outside relief angle eccentric cam with tool-post structure revolving sleeve pivot bush unit, the tool-post structure revolving sleeve lower end with brail after tune
Connection, the tune relief angle transmission bar drive rotation through adjusting relief angle gear-box to be meshed with the feed gear wheel in geared feed case.
A kind of 10. numerical control non-fastening-shaft rotating cutter according to claim 6, it is characterised in that described single roller support front end of line
Property array be provided with and beat reel cylinder, the reel cylinder of beating is through the control of PLC frequency-changing control systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813240.2U CN206999211U (en) | 2017-07-06 | 2017-07-06 | Numerical control non-fastening-shaft rotating cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813240.2U CN206999211U (en) | 2017-07-06 | 2017-07-06 | Numerical control non-fastening-shaft rotating cutter |
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| CN206999211U true CN206999211U (en) | 2018-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097318A (en) * | 2017-07-06 | 2017-08-29 | 山东百圣源集团有限公司 | Numerical control non-fastening-shaft rotating cutter |
| CN108972807A (en) * | 2018-05-17 | 2018-12-11 | 漳州市炯辉机械有限公司 | A kind of efficiently two-way rotary-cut assembly line |
-
2017
- 2017-07-06 CN CN201720813240.2U patent/CN206999211U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097318A (en) * | 2017-07-06 | 2017-08-29 | 山东百圣源集团有限公司 | Numerical control non-fastening-shaft rotating cutter |
| WO2019007185A1 (en) * | 2017-07-06 | 2019-01-10 | 山东百圣源集团有限公司 | Numerically controlled veneer lathe without chucking shaft |
| CN108972807A (en) * | 2018-05-17 | 2018-12-11 | 漳州市炯辉机械有限公司 | A kind of efficiently two-way rotary-cut assembly line |
| CN108972807B (en) * | 2018-05-17 | 2020-12-15 | 漳州市炯辉机械有限公司 | Efficient bidirectional rotary-cut assembly line |
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