CN104493918A - Manufacturing method of prefabricated bending integrated materials - Google Patents
Manufacturing method of prefabricated bending integrated materials Download PDFInfo
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- CN104493918A CN104493918A CN201410773520.6A CN201410773520A CN104493918A CN 104493918 A CN104493918 A CN 104493918A CN 201410773520 A CN201410773520 A CN 201410773520A CN 104493918 A CN104493918 A CN 104493918A
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- curvature
- integrated timber
- laminate
- radius
- preformed
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- 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
- B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
- B27H1/00—Bending wood stock, e.g. boards
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
Abstract
The invention discloses a manufacturing method of prefabricated bending integrated materials. The manufacturing method of the prefabricated bending integrated materials comprises the following steps that a plurality of wood plates with the preset thickness are provided; a part of wood plates in the plurality of wood plates are in longitudinal finger joint in pairs; the elastic stage maximum interference degree of a plurality of layer plates is measured, and in addition, the bendable minimum curvature radius of each layer plate is calculated; the plurality of layer plates are used for being processed into the prefabricated bending integrated materials with different curvature radii; the prefabricated bending integrated materials are placed until the prefabricated bending integrated materials cannot deform, then, the actual curvature radii of the prefabricated bending integrated materials are measured, and next, the relationship curve and the function relationship of the actual curvature radius and the processing curvature radius are established; according to the actually required curvature radius, the processing curvature radius is obtained through the calculation via the function relationship, and the prefabricated bending integrated materials with the corresponding processing curvature radius can be obtained through processing. The manufacturing method of the prefabricated bending integrated materials is simple and feasible, and the implementation is convenient.
Description
Technical field
The present invention relates to a kind of preparation method of preformed curvature integrated timber.
Background technology
With the development of timber buildings industry in China, heavy timber construction building enters the life of compatriots, and there is a large amount of bending integrated timber buildings to occur, comprise large public building and timber structure bridge etc., this type of widely applies bending integrated timber in building, and bending integrated timber designs, production all has certain difficulty.After bending integrated timber machines, usually can deform, resilience etc., cause engineering site to use.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of preparation method of preformed curvature integrated timber.
Preparation method according to the preformed curvature integrated timber of the embodiment of the present invention comprises the following steps: provide multiple plank with predetermined thickness; By the part in multiple described plank, longitudinal finger is to obtain multiple finger laminate between two, and each of the remainder in multiple described plank is non-finger laminate, and wherein said finger laminate and described non-finger laminate are referred to as laminate; Multiple described laminate was placed for first scheduled time, measures the maximum degree of disturbing of the elastic stage of each in multiple described laminate, and choose the flexible minimum profile curvature radius of the 3%-10% tantile under 75%-90% confidential interval as described laminate; Multiple described laminate is utilized to be processed into multiple preformed curvature integrated timber, the processing radius of curvature of multiple described preformed curvature integrated timber is different from each other, described in one of them, the processing radius of curvature of preformed curvature integrated timber equals described laminate minimum profile curvature radius, and described in all the other, the processing radius of curvature of preformed curvature integrated timber is greater than described minimum profile curvature radius; Multiple described preformed curvature integrated timber was placed for second scheduled time, until multiple described preformed curvature integrated timber no longer deforms, then measure the actual curvature radius of multiple described preformed curvature integrated timber, then set up relation curve and the functional relation of described actual curvature radius and described processing radius of curvature; According to the radius of curvature of engineering site actual needs, calculate processing radius of curvature by described functional relation, processing obtains the preformed curvature integrated timber with corresponding processing radius of curvature.
According to the preparation method simple possible of the preformed curvature integrated timber of the embodiment of the present invention, implement convenient, with low cost, solve the design of preformed curvature integrated timber, a processing difficult problem, avoid engineering site to occur underproof preformed curvature integrated timber.
In addition, the preparation method of preformed curvature integrated timber according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, multiple described laminate by adhesive bonds together, is then processed into described preformed curvature integrated timber by bending mould or press.
According to one embodiment of present invention, described adhesive is selected from one or more in isocyanate adhesive, resorcinol adhesive, epoxyn and polyurethane adhesive.
According to one embodiment of present invention, described first scheduled time is 2 hours-4 hours, and described second scheduled time is 72 hours-120 hours.
According to one embodiment of present invention, multiple described preformed curvature integrated timber temperature be 20 degrees Celsius-30 degrees Celsius, relative humidity places described second scheduled time under being the environment of 55%-65%.
According to one embodiment of present invention, the length of described plank is 25 times-30 times of the thickness of described plank.
According to one embodiment of present invention, the flexible minimum profile curvature radius of 5% tantile under 75% confidential interval as described laminate is chosen.
According to one embodiment of present invention, multiple described laminate temperature be 70 degrees Celsius-90 degrees Celsius, relative humidity places described first scheduled time under being the environment of 100%, then measures the maximum degree of disturbing of the elastic stage of each in multiple described laminate.
According to one embodiment of present invention, be 70 degrees Celsius-90 degrees Celsius in temperature, under relative humidity is the environment of 100%, utilize described laminate to be processed into multiple described preformed curvature integrated timber.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preparation method of preformed curvature integrated timber according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings the preparation method of the preformed curvature integrated timber according to the embodiment of the present invention is described.As shown in Figure 1, comprise the following steps according to the preparation method of the preformed curvature integrated timber of the embodiment of the present invention:
Multiple plank with predetermined thickness is provided;
By the part in multiple described plank, longitudinal finger is to obtain multiple finger laminate between two, and each of the remainder in multiple described plank is non-finger laminate, and wherein said finger laminate and described non-finger laminate are referred to as laminate;
Multiple described laminate was placed for first scheduled time, measures the maximum degree of disturbing of the elastic stage of each in multiple described laminate, and choose the flexible minimum profile curvature radius of the 3%-10% tantile under 75%-90% confidential interval as described laminate;
Multiple described laminate is utilized to be processed into multiple preformed curvature integrated timber, the processing radius of curvature of multiple described preformed curvature integrated timber is different from each other, described in one of them, the processing radius of curvature of preformed curvature integrated timber equals described laminate minimum profile curvature radius, and described in all the other, the processing radius of curvature of preformed curvature integrated timber is greater than described minimum profile curvature radius;
Multiple described preformed curvature integrated timber was placed for second scheduled time, until multiple described preformed curvature integrated timber no longer deforms, then measure the actual curvature radius of multiple described preformed curvature integrated timber, then set up relation curve and the functional relation of described actual curvature radius and described processing radius of curvature;
According to the radius of curvature of engineering site actual needs, calculate processing radius of curvature by described functional relation, processing obtains the preformed curvature integrated timber with corresponding processing radius of curvature.
According to the preparation method of the preformed curvature integrated timber of the embodiment of the present invention by setting up relation curve and the functional relation of described actual curvature radius and described processing radius of curvature, thus processing radius of curvature can be calculated according to the radius of curvature of engineering site actual needs by described functional relation.Can process the preformed curvature integrated timber obtaining having corresponding processing radius of curvature thus, this preformed curvature integrated timber is deforming, after resilience, and its radius of curvature is the radius of curvature of actual needs just.
Therefore, according to the preparation method simple possible of the preformed curvature integrated timber of the embodiment of the present invention, implement convenient, with low cost, solve the design of preformed curvature integrated timber, a processing difficult problem, avoid engineering site to occur underproof preformed curvature integrated timber.
And, utilize the physical and mechanical property of the preformed curvature integrated timber produced according to the preparation method of the preformed curvature integrated timber of the embodiment of the present invention to meet or exceed the requirement of GB/T 26899-2011 (structural glulam), there is good economic benefit and environmental benefit.
In some embodiments of the invention, the plank with predetermined thickness used according to the preparation method of the preformed curvature integrated timber of the embodiment of the present invention can select the plank that knaur is few and little.
Preferably, the length of described plank is 25 times-30 times of the thickness of described plank.Further preferably, the length of described plank is 25 times of the thickness of described plank.
Such as, provide 300 planks with predetermined thickness, wherein will carry out Lengthwise joint between two by finger, to form the finger laminate of 100 stack piles by 200 planks.Remaining 100 planks are non-finger laminate, and described finger laminate and described non-finger laminate are referred to as laminate.That is, described laminate is 200.
Adopt the maximum degree of disturbing of elastic stage of laminate described in mechanical test machine testing, amount to 200 groups of data.Then, the flexible minimum profile curvature radius of the 3%-10% tantile under 75%-90% confidential interval as described laminate is chosen.
Preferably, the flexible minimum profile curvature radius of 5% tantile under 75% confidential interval as described laminate is chosen.
In one embodiment of the invention, multiple described laminate temperature be 70 degrees Celsius-90 degrees Celsius, relative humidity placed for first scheduled time under being the environment of 100%, then measured the maximum degree of disturbing of the elastic stage of each in multiple described laminate.
By by multiple described laminate temperature be 70 degrees Celsius-90 degrees Celsius, relative humidity placed for first scheduled time under being the environment of 100%, thus timber can be made to soften and make the composition transfer of timber, thus be conducive to carrying out bending machining to described laminate and shaping.
Preferably, multiple described laminate is being 70 degrees Celsius-90 degrees Celsius in temperature, after relative humidity placed for first scheduled time under being the environment of 100%, is measuring rapidly the maximum degree of disturbing of the elastic stage of each in multiple described laminate.
Preferably, described first scheduled time is 2 hours-4 hours.Further preferably, described first scheduled time is 3 hours.
By adhesive, multiple described laminate is bonded together, is then processed into preformed curvature integrated timber by bending mould or press.Wherein, described adhesive is selected from one or more in isocyanate adhesive, resorcinol adhesive, epoxyn and polyurethane adhesive.
Advantageously, be 70 degrees Celsius-90 degrees Celsius in temperature, under relative humidity is the environment of 100%, utilize multiple described laminate to be processed into multiple described preformed curvature integrated timber.Timber can be made thus to soften and make the composition transfer of timber, thus be conducive to carrying out bending machining to described laminate and shaping.
The processing radius of curvature of multiple described preformed curvature integrated timber is different from each other, described in one of them, the processing radius of curvature of preformed curvature integrated timber equals described laminate minimum profile curvature radius, and described in all the other, the processing radius of curvature of preformed curvature integrated timber is greater than described minimum profile curvature radius.
The processing radius of curvature of described preformed curvature integrated timber refers to the radius of curvature of the described preformed curvature integrated timber after processing, and now described preformed curvature integrated timber does not also deform.After processing obtains described preformed curvature integrated timber, the radius of curvature of described preformed curvature integrated timber can be measured immediately to obtain the processing radius of curvature of described preformed curvature integrated timber.
By multiple described preformed curvature integrated timber temperature be 20 degrees Celsius-30 degrees Celsius, relative humidity be the environment of 55%-65% under place 72 hours-120 hours, until multiple described preformed curvature integrated timber no longer deforms.
Preferably, by multiple described preformed curvature integrated timber temperature be 25 degrees Celsius, relative humidity be the environment of 60% under place 96 hours, until multiple described preformed curvature integrated timber no longer deforms.
After described preformed curvature integrated timber no longer deforms, measure the actual curvature radius of multiple described preformed curvature integrated timber, then set up relation curve and the functional relation of described actual curvature radius and described processing radius of curvature.
According to the radius of curvature of engineering site actual needs, calculate processing radius of curvature by described functional relation, processing obtains the preformed curvature integrated timber with corresponding processing radius of curvature.
The thickness of described plank and the assortment of described plank can also be changed, repeat above-mentioned steps, to process corresponding preformed curvature integrated timber.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a preparation method for preformed curvature integrated timber, is characterized in that, comprises the following steps:
Multiple plank with predetermined thickness is provided;
By the part in multiple described plank, longitudinal finger is to obtain multiple finger laminate between two, and each of the remainder in multiple described plank is non-finger laminate, and wherein said finger laminate and described non-finger laminate are referred to as laminate;
Multiple described laminate was placed for first scheduled time, measures the maximum degree of disturbing of the elastic stage of each in multiple described laminate, and choose the flexible minimum profile curvature radius of the 3%-10% tantile under 75%-90% confidential interval as described laminate;
Multiple described laminate is utilized to be processed into multiple preformed curvature integrated timber, the processing radius of curvature of multiple described preformed curvature integrated timber is different from each other, described in one of them, the processing radius of curvature of preformed curvature integrated timber equals described laminate minimum profile curvature radius, and described in all the other, the processing radius of curvature of preformed curvature integrated timber is greater than described minimum profile curvature radius;
Multiple described preformed curvature integrated timber was placed for second scheduled time, until multiple described preformed curvature integrated timber no longer deforms, then measure the actual curvature radius of multiple described preformed curvature integrated timber, then set up relation curve and the functional relation of described actual curvature radius and described processing radius of curvature;
According to the radius of curvature of engineering site actual needs, calculate processing radius of curvature by described functional relation, processing obtains the preformed curvature integrated timber with corresponding processing radius of curvature.
2. the preparation method of preformed curvature integrated timber according to claim 1, is characterized in that, multiple described laminate by adhesive bonds together, is then processed into described preformed curvature integrated timber by bending mould or press.
3. the preparation method of preformed curvature integrated timber according to claim 2, is characterized in that, described adhesive be selected from isocyanate adhesive, resorcinol adhesive, epoxyn and polyurethane adhesive one or more.
4. the preparation method of preformed curvature integrated timber according to claim 1, is characterized in that, described first scheduled time is 2 hours-4 hours, and described second scheduled time is 72 hours-120 hours.
5. the preparation method of the preformed curvature integrated timber according to claim 1 or 4, is characterized in that, multiple described preformed curvature integrated timber temperature be 20 degrees Celsius-30 degrees Celsius, relative humidity places described second scheduled time under being the environment of 55%-65%.
6. the preparation method of the preformed curvature integrated timber according to any one of claim 1-5, is characterized in that, the length of described plank is 25 times-30 times of the thickness of described plank.
7. the preparation method of the preformed curvature integrated timber according to any one of claim 1-6, is characterized in that, chooses the flexible minimum profile curvature radius of 5% tantile under 75% confidential interval as described laminate.
8. the preparation method of the preformed curvature integrated timber according to any one of claim 1-7, it is characterized in that, multiple described laminate temperature be 70 degrees Celsius-90 degrees Celsius, relative humidity places described first scheduled time under being the environment of 100%, then measures the maximum degree of disturbing of the elastic stage of each in multiple described laminate.
9. the preparation method of the preformed curvature integrated timber according to any one of claim 1-8, it is characterized in that, be 70 degrees Celsius-90 degrees Celsius in temperature, under relative humidity is the environment of 100%, utilize described laminate to be processed into multiple described preformed curvature integrated timber.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106182223A (en) * | 2016-09-09 | 2016-12-07 | 南京工业大学 | Over-bending correction forming method for variable-section arc-shaped laminated wood member |
| CN106239680A (en) * | 2016-09-09 | 2016-12-21 | 南京工业大学 | Preparation method of variable-section arc-shaped laminated wood member with high shape precision |
| CN106239681A (en) * | 2016-09-09 | 2016-12-21 | 南京工业大学 | Preparation method of arc-shaped laminated wood member with shape springback compensation |
| CN106378849A (en) * | 2016-09-09 | 2017-02-08 | 南京工业大学 | Method for forming arc-shaped laminated wood member based on wood plasticity |
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| CN106239681A (en) * | 2016-09-09 | 2016-12-21 | 南京工业大学 | Preparation method of arc-shaped laminated wood member with shape springback compensation |
| CN106378849A (en) * | 2016-09-09 | 2017-02-08 | 南京工业大学 | Method for forming arc-shaped laminated wood member based on wood plasticity |
| CN106239681B (en) * | 2016-09-09 | 2019-02-05 | 南京工业大学 | Preparation method of arc-shaped laminated wood member with shape springback compensation |
| CN106182223B (en) * | 2016-09-09 | 2019-02-05 | 南京工业大学 | Over-bending correction forming method for variable-section arc-shaped laminated wood member |
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| CN104493918B (en) | 2016-03-02 |
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Inventor after: Gao Ying Inventor after: Zhu Xudong Inventor after: Wu Yuxuan Inventor after: Dong Weibo Inventor after: Guo Zhaoxia Inventor after: Yuan Tingge Inventor after: Ding Qingfeng Inventor after: Gong Xinyuan Inventor before: Zhu Xudong Inventor before: Gao Ying Inventor before: Wu Yuxuan Inventor before: Dong Weibo Inventor before: Guo Zhaoxia Inventor before: Yuan Tingge Inventor before: Ding Qingfeng Inventor before: Gong Xinyuan |
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