CN106625907A - Wood veneer gluing equipment and recombined wood preparation method - Google Patents
Wood veneer gluing equipment and recombined wood preparation method Download PDFInfo
- Publication number
- CN106625907A CN106625907A CN201611087778.6A CN201611087778A CN106625907A CN 106625907 A CN106625907 A CN 106625907A CN 201611087778 A CN201611087778 A CN 201611087778A CN 106625907 A CN106625907 A CN 106625907A
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- Prior art keywords
- glue
- veneer
- spraying device
- spraying
- pressure roller
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Fluid Mechanics (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The invention belongs to the field of recombined wood, and particularly relates to wood veneer gluing equipment and a recombined wood preparation method. The gluing equipment comprises a first glue spraying device, a rolling glue spraying device and a conveying device; the rolling glue spraying device is arranged on the downstream portion of the first glue spraying device and comprises a first double compression roller and a second glue spraying device arranged at the discharging end of the first double compression roller; the conveying device is used for enabling a wood veneer to pass through the first glue spraying device and the rolling glue spraying device in sequence. The gluing equipment is provided with the glue spraying devices and the double compression roller, the gluing amount of the veneer can be accurately controlled through the glue spraying devices, and glue liquid can be evenly distributed in the veneer through extrusion and springback deformation caused by the double compression roller to the veneer. In addition, the equipment can continuously glue the wood veneer, therefore, the efficiency of gluing treatment can be improved, and the production cost of the recombined wood can be reduced.
Description
Technical field
The invention belongs to Scrimber field, more particularly to a kind of Wooden veneer sizing equipment and Scrimber preparation method.
Background technology
Scrimber is on the premise of not upsetting lumber fibre orientation, retaining timber fundamental characteristics, using wooden list
Plate makes a kind of novel wooden material after applying glue and compacting, and it not only has the natural wood texture structure of log, and
With the intensity higher than log, while the dimensions of product is also easily adjusted.
In the preparation process of Scrimber, applying glue is a particularly important step.Resin added and glue distribution consistency degree pair
The quality of Scrimber has a direct impact：Resin added is very few, and the adhesive strength of sheet material is low, causes properties of product not up to standard, and surface goes out
Now cracking etc. mass defect；Resin added is excessive, can make sheet material mechanical properties decrease；Applying glue skewness, causes part bonding
Low intensity, the mass defect such as properties of product are up to standard or cracking.
At present, conventional glue applying method is infusion process, that is, the impregnation cage that will be equipped with veneer is immersed in the impregnation for preparing.But
The impregnation resin content of infusion process is wayward, and impregnation skewness in veneer, so as to cause the restructuring wood products of follow-up preparation
It is low intensity, easy to crack.
The content of the invention
In view of this, it is an object of the invention to provide a kind of Wooden veneer sizing equipment and Scrimber preparation method, sheet
The sizing equipment that invention is provided can carry out uniform applying glue to Wooden veneer, and resin added is controllable, and the wood veneer Jing equipment enters
After row applying glue again made by Scrimber can have higher intensity.
The invention provides a kind of Wooden veneer sizing equipment, including：
First glue-spraying device；
Be arranged on the roll-in glue-spraying device in the first glue-spraying device downstream, the roll-in glue-spraying device include the first twin pressure roller and
It is arranged on the second glue-spraying device of the first twin pressure roller discharge end；
And conveying device, for making Wooden veneer sequentially pass through the first glue-spraying device and roll-in glue-spraying device.
Preferably, the roller gap of first twin pressure roller is the 50～80% of Wooden veneer thickness.
Preferably, the conveying device includes hollow out conveyer belt for placing Wooden veneer and matches with hollow out conveyer belt
The transport driving of conjunction.
Preferably, first glue-spraying device and the second glue-spraying device include nozzle towards the hollow out conveyer belt upper table
Several spray guns of several spray guns and nozzle in face towards the hollow out conveyer belt lower surface.
Preferably, also including the second twin pressure roller for being arranged on roll-in glue-spraying device downstream；
The conveying device, for making Wooden veneer sequentially pass through the first glue-spraying device, roll-in glue-spraying device and second pair
Pressure roller.
Preferably, the roller gap of second twin pressure roller is the 80～95% of Wooden veneer thickness.
Preferably, the first glue-spraying device downstream is provided with multiple roll-in glue-spraying devices of arranged in series.
The invention provides a kind of Scrimber preparation method, comprises the following steps：
A), Wooden veneer carries out in twin pressure roller roll-in after a glue spraying, and the discharge end in twin pressure roller carries out two
Secondary glue spraying, obtains the veneer after applying glue；
B), the veneer after the applying glue is suppressed successively and solidified, and obtains Scrimber.
Preferably, the linear velocity of the twin pressure roller is 0.4～0.6m/s.
Preferably, the glue spraying air pressure of a glue spraying and secondary glue spraying is in 4kg/cm2More than.
Compared with prior art, the invention provides a kind of Wooden veneer sizing equipment and Scrimber preparation method, this
The sizing equipment of bright offer includes：First glue-spraying device；It is arranged on the roll-in glue-spraying device in the first glue-spraying device downstream, the roller
Pressure glue-spraying device includes the first twin pressure roller and is arranged on the second glue-spraying device of the first twin pressure roller discharge end；And conveying device, use
The first glue-spraying device and roll-in glue-spraying device are sequentially passed through in Wooden veneer is made.In equipment running process, Wooden veneer exists first
First glue-spraying device carries out glue spraying；Then the veneer after the glue spraying of surface carries out twin pressure roller roll-in, by roll-in by veneer top layer
Glue extrudes penetrate into inside veneer by force, while giving veneer moment compression；Discharge end of the veneer in twin pressure roller afterwards
Secondary glue spraying is carried out by the second glue-spraying device, the instantaneous vacuum effect produced using veneer deformation resilience makes secondary glue spraying
Glue is also penetrated into inside veneer.The sizing equipment that the present invention is provided is provided with glue-spraying device and twin pressure roller, using glue-spraying device
The resin added of veneer can accurately be controlled, and pass through extruding and the resilience deformation that twin pressure roller is caused to veneer, can afterwards glue in list
Intralamellar part is evenly distributed.Additionally, the equipment that the present invention is provided also is capable of achieving to carry out continuous sizing to Wooden veneer such that it is able to carry
The efficiency that high applying glue is processed, reduces the production cost of Scrimber.In the preferred implementation scheme that the present invention is provided, sizing equipment is also
Including the second twin pressure roller for being arranged on the second glue-spraying device downstream, can be by veneer after secondary glue spraying using the roll-in of the second twin pressure roller
The glue residual extruding on surface is penetrated into inside veneer, reduces the glue residual on veneer surface, improves the cleannes on veneer surface,
Glue inside veneer can also simultaneously be distributed more uniform.Test result indicate that, using the equipment of present invention offer to wooden
Veneer is carried out after applying glue, the Scrimber excellent performance by made by veneer after the applying glue, and its 24 hours thickness swelling rates are less than
4.6%, horizontal shear strength ＞ 13MPa, MOR ＞ 124MPa, elastic modelling quantity ＜ 14GPa, internal bond strength ＞
3.21MPa。
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the structural representation of Wooden veneer sizing equipment provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The invention provides a kind of Wooden veneer sizing equipment, including：
First glue-spraying device；
Be arranged on the roll-in glue-spraying device in the first glue-spraying device downstream, the roll-in glue-spraying device include the first twin pressure roller and
It is arranged on the second glue-spraying device of the first twin pressure roller discharge end；
And conveying device, for making Wooden veneer sequentially pass through the first glue-spraying device, the first twin pressure roller and the second glue spraying dress
Put.
Referring to Fig. 1, Fig. 1 is the structural representation of Wooden veneer sizing equipment provided in an embodiment of the present invention, and in Fig. 1,1 is
First glue-spraying device, 2 is the first twin pressure roller, and 3 is the second glue-spraying device, and 4 is conveying device, and 5 is the second twin pressure roller.
The Wooden veneer sizing equipment that the present invention is provided includes：First glue-spraying device 1, roll-in glue-spraying device and conveying device
4.Wherein, conveying device 4 is used to make Wooden veneer sequentially pass through the first glue-spraying device 1 and roll-in glue-spraying device.Carry in the present invention
For one embodiment in, conveying device 4 include the hollow out conveyer belt for placing Wooden veneer and with hollow out conveyer belt match
The transport driving of conjunction.In one embodiment that the present invention is provided, the hollow out conveyer belt is B-mode guipure.In the present invention
In one embodiment of offer, the mesh wire diameter of the B-mode guipure is 1～5mm, preferably 2～3mm.There is provided in the present invention
In one embodiment, the pitch of the B-mode guipure is 10～50mm, preferably 25～30mm.In the reality that the present invention is provided
In applying example, the material of the hollow out conveyer belt is stainless steel, preferably 304 stainless steels.
In the present invention, the first glue-spraying device 1 is used for the surface glue spraying to Wooden veneer.In the reality that the present invention is provided
In applying example, the first glue-spraying device 1 can simultaneously to the upper and lower surface glue spraying of Wooden veneer.In the reality that the present invention is provided
In applying example, the first glue-spraying device 1 includes nozzle towards several spray guns and nozzle of the hollow out conveyer belt upper surface towards institute
State several spray guns of hollow out conveyer belt lower surface.In one embodiment that the present invention is provided, the nozzle of each spray gun
A diameter of 0.4～0.6mm；In one embodiment that the present invention is provided, nozzle and the hollow out conveyer belt of each spray gun
Distance is 20～40mm.In one embodiment that the present invention is provided, the first glue-spraying device 1 includes that nozzle is defeated towards the hollow out
The multiple spray guns with upper surface, multiple spray guns are sent to be distributed along hollow out conveyer belt width, shape spray gun in a row.At this
In one embodiment of bright offer, the first glue-spraying device 1 includes multiple spray guns of the nozzle towards the hollow out conveyer belt lower surface,
Multiple spray guns are distributed along hollow out conveyer belt width, shape spray gun in a row.In one embodiment that the present invention is provided,
In one row's spray gun, the spacing of two neighboring spray gun is 20～30cm.The present invention is not limited the spray gun number of row's spray gun, depending on
Depending on the size of hollow out conveyer belt width, the number of spray gun can make the glue that it sprays along hollow out conveyer belt to Wooden veneer
Width is completely covered Wooden veneer for optimum.
In the present invention, roll-in glue-spraying device is arranged on the downstream of the first glue-spraying device 1, including the first twin pressure roller 2 and setting
In the second glue-spraying device 3 of the first twin pressure roller discharge end.Wherein, the first twin pressure roller 2 includes two pressure rollers be arrangeding in parallel, is used for
Roll-in is carried out to the veneer after glue spraying.In one embodiment that the present invention is provided, the roller gap of the first twin pressure roller 2 is wooden list
The 50～80% of plate thickness；In another embodiment that the present invention is provided, the roller gap of the first twin pressure roller 2 is that Wooden veneer is thick
The 60～70% of degree.In one embodiment that the present invention is provided, two pressure rollers that the first twin pressure roller 2 includes are cylindrical tube
Body, drum surface is without gear piece or screw thread.In the present invention, also include the drive mechanism being engaged with the first twin pressure roller 2, drive the
One twin pressure roller 2 is rotated.
In the present invention, the second glue-spraying device 3 is arranged on the discharge end of the first twin pressure roller 2, for carrying out two to Wooden veneer
Secondary glue spraying.In one embodiment that the present invention is provided, upper surface and following table that the second glue-spraying device 3 can simultaneously to Wooden veneer
Face glue spraying.In one embodiment that the present invention is provided, the second glue-spraying device 3 includes nozzle towards the hollow out conveyer belt upper table
Several spray guns of several spray guns and nozzle in face towards the hollow out conveyer belt lower surface.In the reality that the present invention is provided
In applying example, the nozzle diameter of each spray gun is 0.4～0.6mm；In one embodiment that the present invention is provided, described in each
The nozzle of spray gun is 20～40mm with the distance of hollow out conveyer belt.In one embodiment that the present invention is provided, the second glue spraying dress
Putting 3 includes multiple spray guns of the nozzle towards the hollow out conveyer belt upper surface, and multiple spray guns convey bandwidth side along hollow out
To distribution, shape spray gun in a row.In one embodiment that the present invention is provided, the second glue-spraying device 3 includes nozzle towards described
Multiple spray guns of hollow out conveyer belt lower surface, multiple spray guns are distributed along hollow out conveyer belt width, shape spray gun in a row.
In one embodiment that the present invention is provided, in row's spray gun, the spacing of two neighboring spray gun is 20～30cm.The present invention is to one
The spray gun number of row's spray gun is not limited, depending on size of the Wooden veneer along hollow out conveyer belt width, the number of spray gun
Can make the glue that it sprays that Wooden veneer is completely covered for optimum along hollow out conveyer belt width.
In one embodiment that the present invention is provided, the downstream of the first glue-spraying device 1 is provided with multiple roll-ins of arranged in series
Glue-spraying device, preferably 2～3.In this embodiment, conveying device 4 is used to make Wooden veneer sequentially pass through the first glue spraying dress
Put multiple roll-in glue-spraying devices of 1 and arranged in series.
In one embodiment that the present invention is provided, also including the second twin pressure roller 5 for being arranged on roll-in glue-spraying device downstream,
In this embodiment, conveying device 4 is used to make Wooden veneer sequentially pass through the first glue-spraying device 1, roll-in glue-spraying device and second
Twin pressure roller 5.In the embodiment for including multiple roll-in glue-spraying devices that the present invention is provided, the second twin pressure roller 5 is arranged on end
The downstream of end roll-in glue-spraying device.In the present invention, the second twin pressure roller 5 includes two pressure rollers be arrangeding in parallel, for secondary
Veneer after glue spraying carries out roll-in.In one embodiment that the present invention is provided, the roller gap of the second twin pressure roller 5 is Wooden veneer
The 80～95% of thickness；In another embodiment that the present invention is provided, the roller gap of the second twin pressure roller 5 is Wooden veneer thickness
85～90%.In one embodiment that the present invention is provided, two pressure rollers that the second twin pressure roller 5 includes are cylindrical tube,
Drum surface is without gear piece or screw thread.In the present invention, also include the drive mechanism being engaged with the second twin pressure roller 5, drive second
Twin pressure roller 5 is rotated.
In sizing equipment running, Wooden veneer carries out glue spraying in the first glue-spraying device first；Then after the glue spraying of surface
Veneer carry out twin pressure roller roll-in, the glue on veneer top layer is extruded by force by roll-in is penetrated into inside veneer, at the same give
Veneer moment compression；Afterwards veneer carries out secondary glue spraying in the discharge end of twin pressure roller by the second glue-spraying device, using list
The instantaneous vacuum effect that plate deformation resilience is produced, the glue for making secondary glue spraying is also penetrated into inside veneer.
The sizing equipment that the present invention is provided is provided with glue-spraying device and twin pressure roller, and using glue-spraying device veneer can be accurately controlled
Resin added, and pass through extruding and the resilience deformation that twin pressure roller is caused to veneer, glue can be evenly distributed inside veneer afterwards.
Additionally, the device that the present invention is provided also is capable of achieving to carry out continuous sizing to Wooden veneer such that it is able to improve the effect of applying glue process
Rate, reduces the production cost of Scrimber.In the preferred implementation scheme that the present invention is provided, sizing equipment also includes being arranged on second
Second twin pressure roller in glue-spraying device downstream, can be by the glue residual on veneer surface after secondary glue spraying using the roll-in of the second twin pressure roller
Extruding is penetrated into inside veneer, reduces the glue residual on veneer surface, the cleannes on veneer surface is improved, while veneer can also be made
Internal glue distribution is more uniform.Test result indicate that, the equipment provided using the present invention is carried out after applying glue to Wooden veneer,
The Scrimber excellent performance by made by veneer after the applying glue, its 24 hours thickness swelling rates are less than 4.6%, and horizontal shear is strong
Degree ＞ 13MPa, MOR ＞ 124MPa, elastic modelling quantity ＜ 14GPa, internal bond strength ＞ 3.21MPa.
Present invention also offers a kind of Scrimber preparation method, comprises the following steps：
A), Wooden veneer carries out in twin pressure roller roll-in after a glue spraying, and the discharge end in twin pressure roller carries out two
Secondary glue spraying, obtains the veneer after applying glue；
B), the veneer after the applying glue is suppressed successively and solidified, and obtains Scrimber.
In the glue applying method that the present invention is provided, first first time glue spraying is carried out to Wooden veneer.Wherein, the wooden list
Plate includes but is not limited to board using poplar board or Eucalyptus veneer；The thickness of the Wooden veneer preferably≤4mm, more preferably 1～2mm；
The moisture content of the Wooden veneer preferably 5～20%, more preferably 10～12%.In one embodiment that the present invention is provided,
The Wooden veneer is made up of log after section and drying, and the mode of the section is preferably rotary-cut.In the present invention, institute
The glue spraying air pressure of first time glue spraying is stated preferably in 4kg/cm2More than, more preferably 4～6kg/cm2；The first time glue spraying is used
Glue be preferably resin impregnating glue；The solid content of the glue is preferably 20～25wt%.In the present invention, it is preferred to
A glue spraying is carried out in above-mentioned first glue-spraying device.
Then, the Wooden veneer after a glue spraying carries out roll-in in twin pressure roller.Wherein, the linear velocity of the twin pressure roller is excellent
Elect 0.4～0.6m/s as.In the present invention, it is preferred to carry out roll-in in above-mentioned first twin pressure roller.
Afterwards, the Wooden veneer after roll-in carries out secondary glue spraying in the discharge end of twin pressure roller.Wherein, the secondary glue spraying
Glue spraying air pressure is preferably in 4kg/cm2More than, more preferably 4～6kg/cm2；The glue impregnation that second glue spraying is used is preferred
For resin impregnating glue；The solid content of the glue is preferably 20～25wt%.In the present invention, it is preferred in the above-mentioned second spray
Secondary glue spraying is carried out in adhesive dispenser.
After secondary glue spraying terminates, the veneer after applying glue is obtained.In the present invention, it is preferred to by the Wooden veneer after secondary glue spraying
Repetition carries out roll-in in twin pressure roller, and the discharge end in twin pressure roller carries out glue spraying, preferably repeatedly 1～2 time.In the present invention,
It is preferred that the Wooden veneer after above-mentioned secondary glue spraying or multiple roll-in glue spraying is carried out into roll-in again in twin pressure roller.Wherein,
The linear velocity of the twin pressure roller is preferably 0.4～0.6m/s.In the present invention, the roll-in again is preferably in above-mentioned second pair pressure
Carry out in roller.
After obtaining the veneer after the applying glue, the veneer after the applying glue is suppressed.Wherein, the pressed density is excellent
Elect 0.7～0.85g/cm as3.In the present invention, it is preferred to the veneer after applying glue is dried before pressing, to reduce impregnation
The moisture content of veneer afterwards.The temperature of the drying is preferably 60～70 DEG C；The moisture content of the dried veneer is preferably 12
～15%.
After compacting terminates, the veneer after compacting is solidified.In the present invention, the mode of the solidification is preferably thermosetting
Change；The temperature of the heat cure is preferably 120～140 DEG C；The time of the heat cure is preferably 8～10h.After solidification terminates,
Obtain Scrimber.
The Scrimber preparation method that the present invention is provided has carried out glue spraying, a roll-in and two to Wooden veneer in size application stage
Secondary glue spraying, using glue spraying the resin added of veneer can be accurately controlled, and passes through extruding and the resilience deformation that roll-in is caused to veneer, energy
Glue is enough set to be evenly distributed inside veneer.In the preferred implementation scheme that the present invention is provided, the Wooden veneer to secondary glue spraying
Secondary roll-in is carried out, by secondary roll-in, the glue residual extruding on veneer surface after secondary glue spraying can be penetrated into inside veneer,
The glue residual on veneer surface is reduced, the cleannes on veneer surface are improved, while the glue inside veneer can also be made to be distributed more
Uniformly.Because wood veneer is controllable in the resin added of size application stage, and applying glue is uniform, so that follow-up obtained restructuring wood products
With higher intensity.Test result indicate that, using Scrimber excellent performance obtained in the method that the present invention is provided, it is 24 hours
Thickness swelling rate is less than 4.6%, horizontal shear strength ＞ 13MPa, MOR ＞ 124MPa, elastic modelling quantity ＜ 14GPa,
Internal bond strength ＞ 3.21MPa.
For the sake of becoming apparent from, it is described in detail below by following examples.
Embodiment 1
Wooden veneer sizing equipment
A kind of Wooden veneer sizing equipment as shown in Figure 1 is present embodiments provided, in Fig. 1,1 is the first glue-spraying device, and 2 are
First twin pressure roller, 3 is the second glue-spraying device, and 4 is conveying device, and 5 is the second twin pressure roller.
The Wooden veneer sizing equipment that the present invention is provided includes：First glue-spraying device 1, roll-in glue-spraying device, conveying device 4
With the second twin pressure roller 5, the roll-in glue-spraying device includes the first twin pressure roller 2 and the second glue-spraying device 3.
Wherein, conveying device 4 is used to make Wooden veneer sequentially pass through the first glue-spraying device 1, first the 2, second spray of twin pressure roller
The twin pressure roller 5 of adhesive dispenser 3 and second.In the present embodiment, conveying device 4 include for place Wooden veneer hollow out conveyer belt and
The transport driving being engaged with hollow out conveyer belt, the hollow out conveyer belt be the B-mode net conveyer belt of stainless steel steel wire, material
For stainless steel 304, steel wire diameter is 2mm, and pitch is 25mm.
In the present embodiment, the first glue-spraying device 1 is used for the surface glue spraying to Wooden veneer, and the first glue-spraying device 1 includes
Towards multiple spray guns of the hollow out conveyer belt lower surface, the spacing of two neighboring spray gun is 25cm to nozzle, multiple spray guns
Along the distribution of hollow out conveyer belt width, shape spray gun in a row；Also include nozzle towards many of the hollow out conveyer belt upper surface
Individual spray gun, the spacing of two neighboring spray gun is 25cm, and multiple spray guns are distributed along hollow out conveyer belt width, and shape is in a row
Spray gun；In the present embodiment, the nozzle diameter of each spray gun is 0.6mm, and nozzle and the hollow out of each spray gun are conveyed
The distance of band is 30mm；The present invention spray gun number is not limited, depending on Wooden veneer along hollow out conveyer belt width size
Depending on, the spray gun number that the present embodiment is arranged can make its glue for spraying that wooden list is completely covered along hollow out conveyer belt width
Plate.
In the present embodiment, the first twin pressure roller 2 is arranged on the downstream of the first glue-spraying device 1, including two pressures be arrangeding in parallel
Roller, the roller gap of the first twin pressure roller 2 is the 50% of Wooden veneer thickness, and two pressure rollers that the first twin pressure roller 2 includes are cylinder
Cylinder, drum surface is without gear piece or screw thread, a diameter of 150mm of cylinder.
In the present embodiment, the second glue-spraying device 3 is arranged on the discharge end of the first twin pressure roller 2, and the second glue-spraying device 3 includes spray
Towards multiple spray guns of the hollow out conveyer belt lower surface, the spacing of two neighboring spray gun is 25cm to mouth, multiple spray gun edges
Hollow out conveyer belt width is distributed, shape spray gun in a row；Also include nozzle towards the multiple of the hollow out conveyer belt upper surface
Spray gun, the spacing of two neighboring spray gun is 25cm, and multiple spray guns are distributed along hollow out conveyer belt width, shape spray in a row
Rifle；In the present embodiment, the nozzle diameter of each spray gun is 0.6mm, the nozzle of each spray gun and hollow out conveyer belt
Distance be 30mm；The present invention is not limited spray gun number, depending on Wooden veneer along the size of hollow out conveyer belt width
Fixed, the spray gun number that the present embodiment is arranged can make its glue for spraying that wooden list is completely covered along hollow out conveyer belt width
Plate.
In the present embodiment, the second twin pressure roller 5 is arranged on the downstream of the second glue spraying 3, and the second twin pressure roller 5 includes what is be arranged in parallel
Two pressure rollers, the roller gap of the second twin pressure roller 5 is the 80% of Wooden veneer thickness, and two pressure rollers that the second twin pressure roller 5 includes are
Cylindrical tube, drum surface is without gear piece or screw thread, a diameter of 150mm of cylinder.
During plant running, Wooden veneer carries out glue spraying in the first glue-spraying device first；Then the list after the glue spraying of surface
Plate carries out twin pressure roller roll-in, extrudes the glue on veneer top layer by force by roll-in and penetrates into inside veneer, while giving veneer
Moment compression；Afterwards veneer carries out second glue spraying in the discharge end of twin pressure roller by the second glue-spraying device, using veneer
The instantaneous vacuum effect that deformation resilience is produced, the glue for making second glue spraying is also penetrated into inside veneer；Finally utilize second pair
Wooden veneer only this second twin pressure roller roll-in of pressure roller to secondary glue spraying, further reduces the glue residual on veneer surface, carries
The uniformity of the glue distribution inside high veneer.
Embodiment 2
Prepare restructuring wood
1), rotary-cut:Russian poplar is peeled into by veneer using peeler, the thickness of veneer is 2mm, and width is 250mm,
Length is 650mm.
2), veneer drying：The good veneer of rotary-cut is dried place using mesh-belt drier under the conditions of 120 DEG C of temperature
Reason so as to which moisture content is reached within 10～12%.
3), the allotment of adhesive：Glue is adopted the Water Solvable Low-molecular Weight Phenol-formaldehyde of homemade solid content 40wt%
Adhesive is diluted to solids content for 20wt%.Water Solvable Low-molecular Weight Phenol-formaldehyde adhesive is industrial phenol, industrial formol
With NaOH according to mol ratio 1：1.8：0.2 hybrid reaction is made, and resin adhesive quality index is as follows：Resin solid content
For 40wt%；25 DEG C of viscositys are 20s；PH is 11.
4), applying glue：Dried veneer is layered on the conveyer belt of the sizing equipment that embodiment 1 is provided, adhesive is filled
Enter the first and second glue-spraying devices of the sizing equipment, start sizing equipment；Wherein, convey tape speed and be set to 0.6m/s,
Spray gun air pressure is set to 4kg/cm2, the linear velocity of the first and second twin pressure rollers is set to 0.6m/s；Veneer sets through the applying glue
After standby applying glue, the veneer after applying glue is obtained, gel content is 21wt%.
5), it is dried after glue：Wood veneer after applying glue is put in mesh-belt drier and is dried process, temperature control
At 65 DEG C, it is dried to its moisture content within 12～14%.
6) it is, compressing：The weight of dried single board after glue according to needed for design density is calculated, then by the veneer for weighing up
Equably mat formation as far as possible in mould, compressing, pressed density is 0.79g/cm3。
7), heat cure：The veneer after compacting is heating and curing using electric dry oven, temperature control at 120～140 DEG C,
6～8 hours time, after thermosetting is finished, obtain Scrimber.
Embodiment 3
1st, Wooden veneer sizing equipment
A kind of Wooden veneer sizing equipment similar to Example 1 is present embodiments provided, its difference is, including series connection
Two roll-in glue-spraying devices of arrangement, the second twin pressure roller 5 is arranged on the downstream of end roll-in glue-spraying device.
2nd, Prepare restructuring wood
1), rotary-cut:Russian poplar is peeled into by veneer using peeler, the thickness of veneer is 2mm, and width is 250mm,
Length is 650mm.
2), veneer drying：The good veneer of rotary-cut is dried place using mesh-belt drier under the conditions of 120 DEG C of temperature
Reason so as to which moisture content is reached within 10～12%.
3), the allotment of adhesive：Glue is adopted the Water Solvable Low-molecular Weight Phenol-formaldehyde of homemade solid content 40wt%
Adhesive is diluted to solids content for 20wt%.Water Solvable Low-molecular Weight Phenol-formaldehyde adhesive is industrial phenol, industrial formol
With NaOH according to mol ratio 1：1.8：0.2 hybrid reaction is made, and resin adhesive quality index is as follows：Resin solid content
For 40wt%；25 DEG C of viscositys are 20s；PH is 11.
4), applying glue：Dried veneer is layered on the conveyer belt of above-mentioned Wooden veneer sizing equipment, adhesive is poured into
First and second glue-spraying devices of the sizing equipment, start sizing equipment；Wherein, convey tape speed and be set to 0.6m/s, spray
Rifle air pressure is set to 4kg/cm2, the linear velocity of the first and second twin pressure rollers is set to 0.6m/s；Veneer is through the sizing equipment
After applying glue, the veneer after applying glue is obtained, gel content is 25wt%.
5), it is dried after glue：Wood veneer after applying glue is put in mesh-belt drier and is dried process, temperature control
At 65 DEG C, it is dried to its moisture content within 12～14%.
6) it is, compressing：The weight of dried single board after glue according to needed for design density is calculated, then by the veneer for weighing up
Equably mat formation as far as possible in mould, compressing, pressed density is 0.79g/cm3。
7), heat cure：The veneer after compacting is heating and curing using electric dry oven, temperature control at 120～140 DEG C,
6～8 hours time, after thermosetting is finished, obtain Scrimber.
Embodiment 4
1st, Wooden veneer sizing equipment
A kind of Wooden veneer sizing equipment similar to Example 1 is present embodiments provided, its difference is, including series connection
Three roll-in glue-spraying devices of arrangement, the second twin pressure roller 5 is arranged on the downstream of end roll-in glue-spraying device.
2nd, Prepare restructuring wood
1), rotary-cut:Russian poplar is peeled into by veneer using peeler, the thickness of veneer is 2mm, and width is 250mm,
Length is 650mm.
2), veneer drying：The good veneer of rotary-cut is dried place using mesh-belt drier under the conditions of 120 DEG C of temperature
Reason so as to which moisture content is reached within 10～12%.
3), the allotment of adhesive：Glue is adopted the Water Solvable Low-molecular Weight Phenol-formaldehyde of homemade solid content 40wt%
Adhesive is diluted to solids content for 20wt%.Water Solvable Low-molecular Weight Phenol-formaldehyde adhesive is industrial phenol, industrial formol
With NaOH according to mol ratio 1：1.8：0.2 hybrid reaction is made, and resin adhesive quality index is as follows：Resin solid content
For 40wt%；25 DEG C of viscositys are 20s；PH is 11.
4), applying glue：Dried veneer is layered on the conveyer belt of above-mentioned Wooden veneer sizing equipment, adhesive is poured into
First and second glue-spraying devices of the sizing equipment, start sizing equipment；Wherein, convey tape speed and be set to 0.6m/s, spray
Rifle air pressure is set to 4kg/cm2, the linear velocity of the first and second twin pressure rollers is set to 0.6m/s；Veneer is through the sizing equipment
After applying glue, the veneer after applying glue is obtained, gel content is 28wt%.
5), it is dried after glue：Wood veneer after applying glue is put in mesh-belt drier and is dried process, temperature control
At 65 DEG C, it is dried to its moisture content within 12～14%.
6) it is, compressing：The weight of dried single board after glue according to needed for design density is calculated, then by the veneer for weighing up
Equably mat formation as far as possible in mould, compressing, pressed density is 0.79g/cm3。
7), heat cure：The veneer after compacting is heating and curing using electric dry oven, temperature control at 120～140 DEG C,
6～8 hours time, after thermosetting is finished, obtain Scrimber.
Comparative example
Normal pressure impregnation scheme carries out applying glue, Prepare restructuring wood
1), rotary-cut:Russian poplar is peeled into by veneer using peeler, the thickness of veneer is 2mm, and width is 250mm,
Length is 650mm.
2), veneer drying：The good veneer of rotary-cut is dried place using mesh-belt drier under the conditions of 120 DEG C of temperature
Reason so as to which moisture content is reached within 10～12%.
3), the allotment of adhesive：Glue is adopted the Water Solvable Low-molecular Weight Phenol-formaldehyde of homemade solid content 40wt%
Adhesive is diluted to solids content for 20wt%.Water Solvable Low-molecular Weight Phenol-formaldehyde adhesive is industrial phenol, industrial formol
With NaOH according to mol ratio 1：1.8：0.2 hybrid reaction is made, and resin adhesive quality index is as follows：Resin solid content
For 40wt%；25 DEG C of viscositys are 20s；PH is 11.
4), applying glue：Above-mentioned adhesive is poured in impregnation pond, dried veneer is placed in impregnation pond carries out impregnation, soak
The glue time is 30min, takes out veneer after the completion of impregnation, carries out drip liquid and extremely drips without obvious liquid；Detect that impregnation resin content is
18.9wt%.
5), it is dried after glue：Wood veneer after impregnation is put in mesh-belt drier and is dried process, temperature control
At 65 DEG C, it is dried to its moisture content within 12～14%.
6) it is, compressing：The weight of dried single board after glue according to needed for design density is calculated, then by the veneer for weighing up
Equably mat formation as far as possible in mould, compressing, pressed density is 0.79g/cm3。
7), heat cure：The veneer after compacting is heating and curing using electric dry oven, temperature control at 120～140 DEG C,
6～8 hours time, after thermosetting is finished, obtain Scrimber.
Embodiment 5
With reference to GB/T 17657-2013《Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels》Detection embodiment 2～4
The main performance of the Scrimber obtained with comparative example：Such as density, 24 hours thickness swelling rates, MOR, elastic modelling quantity,
Internal bond strength and shear strength (horizontal addload), as a result as shown in table 1：
The performance test table of the Scrimber of table 1
The weight prepared compared to Scrimber made by conventional size technique, the present invention is can be seen that by the data in table 1
The wooden performance of group is more excellent.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of Wooden veneer sizing equipment, including：
First glue-spraying device；
The roll-in glue-spraying device in the first glue-spraying device downstream is arranged on, the roll-in glue-spraying device includes the first twin pressure roller and setting
In the second glue-spraying device of the first twin pressure roller discharge end；
And conveying device, for making Wooden veneer sequentially pass through the first glue-spraying device and roll-in glue-spraying device.
2. sizing equipment according to claim 1, it is characterised in that the roller gap of first twin pressure roller is Wooden veneer
The 50～80% of thickness.
3. sizing equipment according to claim 1, it is characterised in that the conveying device is included for placing Wooden veneer
Hollow out conveyer belt and the transport driving that is engaged with hollow out conveyer belt.
4. sizing equipment according to claim 3, it is characterised in that first glue-spraying device and the second glue-spraying device are equal
Including nozzle towards the hollow out conveyer belt upper surface several spray guns and nozzle towards the hollow out conveyer belt lower surface
Several spray guns.
5. sizing equipment according to claim 1, it is characterised in that also including being arranged on the of roll-in glue-spraying device downstream
Two twin pressure rollers；
The conveying device is used to make Wooden veneer sequentially pass through the first glue-spraying device, roll-in glue-spraying device and the second twin pressure roller.
6. sizing equipment according to claim 5, it is characterised in that the roller gap of second twin pressure roller is Wooden veneer
The 80～95% of thickness.
7. sizing equipment according to claim 1, it is characterised in that the first glue-spraying device downstream is provided with series connection row
Multiple roll-in glue-spraying devices of row.
8. a kind of Scrimber preparation method, comprises the following steps：
A), Wooden veneer carries out in twin pressure roller roll-in after a glue spraying, and the discharge end in twin pressure roller carries out secondary spray
Glue, obtains the veneer after applying glue；
B), the veneer after the applying glue is suppressed successively and solidified, and obtains Scrimber.
9. preparation method according to claim 8, it is characterised in that the linear velocity of the twin pressure roller is 0.4～0.6m/s.
10. preparation method according to claim 8, it is characterised in that the glue spraying gas of a glue spraying and secondary glue spraying
Pressure is in 4kg/cm2More than.
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| CN201611087778.6A CN106625907A (en) | 2016-11-30 | 2016-11-30 | Wood veneer gluing equipment and recombined wood preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861176A (en) * | 2019-11-25 | 2020-03-06 | 黄河三角洲京博化工研究院有限公司 | Preparation method of recombined wood |
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