A kind of bamboo unwinder
Technical field
The utility model is related to bamboo field of machining, are specially a kind of bamboo unwinder.
Background technology
Bamboo is a kind of fast growing, high-quality and easily updated recovery important natural resources forestry products.During bamboo is
The thin cylinder-like structure of empty wall, in order to by bamboo on a large scale using, it is necessary to which bamboo is launched into broad-width material and laggard
Row is processed further.
Current bamboo board processing method is typically that multi-disc bamboo cane is divided on thick bamboo tube length direction, then uses binding agent
Bond compression moulding;The oblique trunking or straight-line groove of single direction are either opened up on the bamboo material for needing to process so that bamboo material exists
Internal length of run is identical with the expansion outside bamboo material during the expansion of bamboo material.But it using traditional bamboo method of deploying, deposits
In problems with:
1st, needing the cutting on bamboo material during expansion and flattened with pressing through for different radians, required process is more,
It is of high cost;
2nd, the mode of grooving of single direction is continuous larger due to being still present on stress bamboo material when expansion pressure is larger
Crackle, influence the quality of bamboo expansion plate finally obtained.
Utility model content
The purpose of this utility model is to provide for a kind of bamboo unwinder, and bamboo material can be launched into smooth bamboo expansion plate,
And be not in the quality of big cracks influence bamboo expansion plate on bamboo expansion plate.
In order to realize foregoing invention purpose, the utility model employs following technical scheme:Including rack and mounted on machine
Unfolding mechanism on frame, the unfolding mechanism includes feeding unit and multiple compression roller units for being used to bamboo being unfolded, described to send
Material unit is fixed in rack, and each compression roller unit includes two expansion rollers for being mutually parallel and rotating coaxially, the expansion roller
Circumferential surface be equipped with and inscribe the expansion knife of oblique trunking for being pushed on the inside of thick bamboo tube, the blade on the expansion knife is tilts
It sets, the edge tilted direction that the expansion knife on roller is unfolded in same compression roller unit is opposite;The expansion roller is located at feeding unit
Top, be unfolded between the circumferential surface of roller and feeding unit exist for bamboo material by gap.
The compression roller unit is along feed direction successively arranged adjacent end to end, and the centre symmetry line of each compression roller unit is with sending
The center line of material unit feed direction overlaps on the same line, on the expansion roller of the adjacent compression roller unit of center line the same side
Edge tilted direction is opposite;The distance between roller is unfolded in same compression roller unit along feed direction gradually to increase.
Bamboo material to be deployed is between unfolding mechanism and transport mechanism by the pressure roller list being sequentially increased by multiple width
Rolling and being unfolded for member, finally obtains complete bamboo expansion plate.Because the inclination of expansion knife on roller is unfolded in each compression roller unit
Direction is different, with several groups of oblique trunkings staggeredly on the bamboo expansion plate finally obtained.
Compared with prior art, the bamboo unwinder of above-mentioned technical proposal is employed, is had the advantages that:
1st, using the bamboo unwinder of the utility model, oblique trunking is carved on bamboo material and the pressing of bamboo material is carried out at the same time, no
Separate machined is needed, saves the time, reduces production cost;
2nd, the inclined direction of every group of oblique trunking adjacent on the bamboo expansion plate being machined to is unfolded not by the bamboo of the present invention
Together, continuous big crackle will not be formed between oblique trunking during expansion, ensures the quality of the bamboo expansion plate finally shaped.
3rd, in each compression roller unit two expansion rollers expansion knife inclined direction on the contrary, making bamboo material in transmission and the mistake of stress
The stress on both sides is cancelled out each other in journey, is ensured bamboo material in transmission and is deviated by left and right will not occur during extruding oblique trunking.
During bamboo material is unfolded, prevent from being unfolded one when bamboo material in order to which bamboo material is enabled to obtain preferably flattening
When determining degree, because the relation bamboo material of stress is from Central Cracking.Unfolding mechanism preferably further includes expansion pressing plate, the expansion pressing plate
Between the two expansion rollers rotated coaxially, the expansion roller is relatively fixed setting with expansion pressing plate;The expansion pressing plate bag
Include the pressure face for contacting to flatten bamboo material with bamboo material, on the inside of the expansion roller that the width of the pressure face and two rotate coaxially away from
The height of the contact surface contacted from equal and pressure face height with roller is unfolded with bamboo material surface is identical.
Feeding unit can be made of multiple feeding carrying rollers, and feeding carrying roller is multiple rollers that can be passively rotated with bamboo material.
Can also be delivery sheet, the delivery sheet is laid in the lower section of unfolding mechanism, and feeding plate surface is smooth.
Feeding unit is according to feeding carrying roller, and there are irregular gap, expansion pressures between feeding carrying roller and expansion pressing plate
The gap at contact surface between plate and two carrying rollers is the largest, and bamboo material is when by expansion pressing plate and feeding carrying roller, bamboo material
Lower section is not supported, and the suppressing action that pressing plate is unfolded forms gap between two carrying rollers, can not be fully pressed to bamboo material, flattening
Effect is pushed to decline.
Therefore, preferred feeding unit is made of delivery sheet in the utility model, and by coordinating with expansion pressing plate, formation is
One for bamboo material be only capable of making bamboo material by gap, upper and lower surface of the gap completely with bamboo material overlap so that bamboo material has obtained
Full expansion flattens effect.
When feeding unit is delivery sheet, with the increase of distance between expansion roller, the width of distance can between expansion roller
It can be more than the maximum width that bamboo material is unfolded in itself, the effect for being just not in contact with and being driven between the expansion roller and bamboo material at this time
Point.Therefore, unfolding mechanism preferably further includes drive, and the drive is located at the centres of the two expansion rollers rotated coaxially, and with
Two expansion rollers rotate coaxially.The circumferential surface of drive is preferable provided with the tapered feeding nail that bamboo material is assisted to be driven, and send
Material nail can increase the active force between drive and bamboo material, and bamboo material is enable preferably to be driven along feed direction.
Preferably, the distance between expansion inside and expansion roller outside in adjacent previous compression roller unit in each compression roller unit
The distance between it is identical.
Preferably, the expansion roller that two positioned at feed direction front end rotate coaxially is bonded to each other.
Preferably, the expansion knife being obliquely installed on each expansion roller has 25.
Preferably, the angle of inclination of the expansion knife blade is 10-60 degree.
Description of the drawings
Fig. 1 is the structure diagram of the utility model bamboo unwinder embodiment 1;
Fig. 2 is the arrangement schematic diagram of compression roller unit in the present embodiment 1;
Fig. 3 is the enlarged drawing at A in Fig. 2;
Fig. 4 is the structure diagram of single compression roller unit in the present embodiment 1;
Fig. 5 is the structure diagram of the utility model bamboo unwinder embodiment 2;
Fig. 6 is the structure diagram of compression roller unit in the present embodiment 2;
Fig. 7 is the structure diagram of single compression roller unit in the present embodiment 2;
Fig. 8 is the structure diagram of expansion knife after single expansion roller circumferential surface expansion;
Fig. 9 is the structure diagram of the oblique trunking after the expansion of bamboo material.
Reference numeral:1st, rack;21st, delivery sheet;22nd, feeding carrying roller;3rd, roller is unfolded;4th, pressing plate is unfolded;5th, drive;
51st, feeding is followed closely.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1:
Bamboo unwinder as shown in Figures 1 to 4, the unfolding mechanism including rack 1 and in rack 1, unfolding mechanism bag
Feeding unit and multiple compression roller units for being used to bamboo being unfolded are included, feeding unit is fixed in rack 1, each compression roller unit bag
Two expansion rollers 3 for being mutually parallel and rotating coaxially are included, the circumferential surface of expansion roller 3 is equipped with to be carved for being pushed on the inside of thick bamboo tube
The expansion knife of lower oblique trunking, is unfolded the blade on knife to be obliquely installed, and the knife of the expansion knife on roller 3 is unfolded in same compression roller unit
Sword inclined direction is opposite;Ensure operation when or so stress be it is identical, therefore bamboo material will not be generated when extruding oblique trunking a left side or
Right offset.
Expansion roller 3 is located at the top of feeding unit, is unfolded to exist for bamboo material between the circumferential surface and feeding unit of roller 3
By gap;Compression roller unit is along feed direction successively arranged adjacent end to end, and the centre symmetry line of each compression roller unit is with sending
The center line of material unit feed direction is overlapped on the same line, on the expansion roller 3 of the adjacent compression roller unit of center line the same side
Edge tilted direction it is opposite.In this way, on the bamboo expansion plate finally obtained, the inclined direction of every group of adjacent oblique trunking is not
Together, continuous big crackle will not be formed between oblique trunking during expansion, ensures the quality of the bamboo expansion plate finally shaped.
The distance between roller 3 is unfolded in same compression roller unit along feed direction gradually to increase, is unfolded in each compression roller unit
The distance between 3 inside of roller is identical with the distance between 3 outside of roller is unfolded in adjacent previous compression roller unit.
With reference to above-mentioned technical proposal, using the bamboo unwinder of the present embodiment, bamboo material is passed sequentially through into pressure along feed direction
Roller unit is unfolded, and with reference to Fig. 1 and the structure diagram of bamboo unwinder shown in Fig. 2, bamboo material is progressively rolled from original arcuation
During expansion tablet, bamboo material is the nicked cylindrical shape of initial growth state during due to most starting, the radial direction of bamboo material
The arc in the section in direction is smaller to be not easy to flatten, therefore between the expansion roller 3 rotated coaxially along the two of the front end of feed direction
It is very close to each other, it is bonded to each other and has subtracted the distance between expansion roller 3 so that bamboo material most starts preferably to be unfolded.Each two is same
The expansion knife on expansion roller 3 that axis rotates can leave two groups of symmetrical inclined direction phases after being rolled across from bamboo material on bamboo material
Anti- oblique trunking, the bamboo material with oblique trunking are moved on along feed direction, in subsequent compression roller unit two expansion rollers 3 it
Between width be more than preceding two expansion the distance between rollers 3, bamboo material after a series of width gradually increased compression roller unit expansion,
Raw bamboo material finally obtains smooth bamboo expansion plate by slowly expansion.
As shown in figure 8, bamboo material is along feed direction during being progressively unfolded, bamboo material surface be carved with that expansion knife leaves as
Several groups of oblique trunkings for being obliquely installed and intersecting successively of Fig. 8.
It in order to being unfolded of making that bamboo material can be better during expansion and flattens, unfolding mechanism further includes exhibition
Pressing plate 4 is opened, expansion pressing plate 4 is located between the two expansion rollers 3 rotated coaxially, and expansion roller 3 is relatively fixed with expansion pressing plate 4 and sets
It puts.Expansion pressing plate 4 includes contacting to flatten the pressure face of bamboo material, the width of pressure face and two expansion rotated coaxially with bamboo material
The height for the contact surface that the distance of the inside of roller 3 is equal and the height of pressure face is contacted with roller 3 is unfolded with bamboo material surface is identical.
In the present embodiment, after bamboo material leaves oblique trunking by compression roller unit expansion, continue to advance to next compression roller unit, pressing plate is unfolded
4 press through before on the bamboo material that was unfolded by compression roller unit, since there are oblique trunking, expansion pressing plate 4 can will on bamboo material before
Bamboo material further flattens the quality that without there is larger gap on the bamboo expansion plate that makes to finally obtain, ensure that bamboo expansion.
In the present embodiment, feeding unit is delivery sheet 21, and delivery sheet 21 is laid in the lower section of unfolding mechanism.Along feeding
Direction, the distance between two expansion rollers 3 gradually increase in compression roller unit, when above-mentioned distance be more than after bamboo material is unfolded it is maximum away from
From, for bamboo material position between expansion pressing plate 4 and delivery sheet 21, pressing plate 4 and delivery sheet 21 is unfolded cannot provide the power of movement for bamboo material,
Therefore unfolding mechanism further includes drive 5, drive 5 is located at the centre of the two expansion rollers 3 rotated coaxially, and same with two expansion rollers 3
Axis rotates, and drive 5 can provide power for bamboo material when roller 3 is unfolded and can not be contacted with bamboo material to feed direction advance, ensure
The normal operation of bamboo unwinder.In order to increase the friction between drive 5 and bamboo material, the circumferential surface of drive 5, which is equipped with, to be used for
Assist the tapered feeding nail 51 of bamboo material transmission.
The expanded view of expansion 3 circumferential surface of roller as shown in Figure 8, wherein oblique line portion are expansion knife, in order to ensure bamboo material
It can be fully deployed and not generate and destroy integrally-built larger crackle, the expansion knife being obliquely installed on each expansion roller 3
There are 25, and the angle of inclination that knife blade is unfolded is 10-60 degree.
Embodiment 2:
As illustrated in figs. 5-7, as different from Example 1, the feeding unit in the present embodiment be feeding carrying roller 22, feeding support
Roller 22 is made of multiple carrying rollers corresponding with compression roller unit.When bamboo material during expansion can not with expansion roller 3 contact when, due to
Carrying roller can roll continues the power that provides of moving ahead for bamboo material along feed direction, therefore the structure diagram of compression roller unit such as Fig. 6 institutes
Show, the drive 5 being not required in embodiment.
The above makes the preferred embodiment of the utility model, does not depart from for those of ordinary skill in the art
On the premise of the utility model principle, several variations and modifications can also be made, these also should be regarded as the protection of the utility model
Scope.