CN111844293B - Round bamboo softening, bending and shaping integrated processing method and system - Google Patents
Round bamboo softening, bending and shaping integrated processing method and system Download PDFInfo
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- CN111844293B CN111844293B CN202010710898.7A CN202010710898A CN111844293B CN 111844293 B CN111844293 B CN 111844293B CN 202010710898 A CN202010710898 A CN 202010710898A CN 111844293 B CN111844293 B CN 111844293B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
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- 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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Abstract
The invention belongs to the technical field of round bamboo processing, and discloses a round bamboo softening, bending and shaping integrated processing method and system, which comprises the following steps: step 1), feeding round bamboos at a certain transmission speed by adopting a conveying mechanism, heating the round bamboos by adopting a heating mechanism in the feeding process, and softening the round bamboos; step 2) bending the round bamboo processed in the step 1) by adopting a bending mechanism; and 3) cooling and shaping the round bamboo treated in the step 2) by adopting a cooling mechanism. The process and the system can reduce the high dependence on manpower in the round bamboo bending processing, improve the dimensional accuracy, the stability and the processing efficiency of the round bamboo bending component, and provide possibility for the industrial application of the round bamboo bending component.
Description
Technical Field
The invention relates to the technical field of round bamboo processing, in particular to a round bamboo softening, bending and shaping integrated processing method and system.
Background
The bamboo is natural, tall and straight and elegant, and has strong Chinese culture attributes. The round bamboo is soft in color, smooth in hand feeling, rich in elasticity and excellent in mechanical property, and is one of the earliest applied building materials. At present, reinforced concrete materials are mainly used for buildings, but the reinforced concrete materials cause huge energy consumption in the production process, the environment burden caused by difficult degradation of waste building materials is heavier and heavier, and the society has a great call for green materials. The round bamboo is a building, decoration and decorating material with huge application potential due to the advantages of high growth speed, wide material source, convenient material acquisition, low processing energy consumption and the like. Due to the lack of industrialized processing equipment, the round bamboo is processed into the artificial board by utilizing the idea of multi-reference wood utilization, and the processing process not only causes the damage of the excellent structure of the round bamboo, but also causes huge material waste.
Compared with other biological materials such as wood and the like, the round bamboo has excellent bending performance and bending stability, and the utilization rate of the round bamboo can be effectively improved by utilizing the round bamboo to manufacture the bending component, so that the method is an important way for effectively retaining the original state of the round bamboo, exerting the excellent bending performance of the round bamboo and realizing the use of the wood.
In the prior art, the circular bamboo bending processing mainly adopts a manual bending mode after baking, the industrialization level is extremely low, the operator level difference is large, and the circular bamboo bending processing is difficult to be used for processing standard products, so that the development of an industrialized processing method is very necessary.
Through retrieval, the prior art of the bamboo product bending and forming device has disclosed related applications, for example, the application with Chinese patent application number of 201620258061.2 and publication date of 2016, 9, month and 7 discloses a bamboo product bending and forming device, which comprises a base, a control box, a beam, a heating and softening box and a die device, wherein the upper side of the base is provided with a pillar, a power switch is arranged in the control box, and the right side of the power switch is provided with a power indicator lamp, the upper side of the heating and softening box is provided with a jack, a water tank is arranged in the heating and softening box, a heating plate is arranged at the lower side of the water tank, a water filling port is arranged in the heating softening tank, a thermal fiber material is arranged at the upper side of the softening tank, a hot air fan is arranged in the mould device, and install the blast fan in the hot-blast fan, and the blast fan has the side to install the heating piece, install the mould in the mould device. The device of this application provides great convenience for the bending process of bamboo articles of relatively small volume, but for round bamboos of a certain volume and length, it is not suitable because it needs to be transported to a certain heating bending area first.
Aiming at the defects of the prior art, the industrial processing method for improving the processing efficiency, the product quality and the processing precision is needed to be invented for processing the round bamboo raw material.
Disclosure of Invention
1. Problems to be solved
Aiming at the defects that in the prior art, the circular bamboo raw material is bent by hand after being baked, the industrialization level is extremely low, the quality of components is difficult to be used for processing standard products due to large difference of operator levels, the invention provides the processing technology with high processing efficiency, high product quality and high processing precision, and the application range of the circular bamboo is expanded while the cost is effectively reduced.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention provides a round bamboo softening, bending and shaping integrated processing method, which comprises the following steps:
step 1) feeding round bamboos at a certain transmission speed by adopting a conveying mechanism, heating the round bamboos by adopting a heating mechanism in the feeding process, and softening the round bamboos;
step 2) bending the round bamboo processed in the step 1) by adopting a bending mechanism;
and 3) cooling and shaping the round bamboo treated in the step 2) by adopting a cooling mechanism.
As a further improvement of the invention, the heating mechanism is provided with an inlet and an outlet which are respectively used for feeding and discharging the round bamboos, and the conveying process and the round bamboo heating process of the conveying mechanism are simultaneously completed in the heater.
As a further improvement of the invention, the round bamboo subjected to bending treatment in the step 3) is cooled by cooling water to realize shaping, and the round bamboo is continuously placed in the bending mechanism for a certain time to complete processing.
As a further improvement of the invention, the standing time is not less than 30min, so as to avoid the rebound of the bent round bamboo.
In a further improvement of the present invention, the conveying speed a of the conveying mechanism is determined according to the wall thickness δ of the round bamboo and the length l of the heating mechanism, and the relationship between the three is (0.05-0.15) l/δ (mm/s).
The method can calculate the conveying speed according to the wall thickness delta of the round bamboo and the length l of the heating mechanism, so that the heating process is more stable, the defects of incomplete heating, insufficient softening degree and bamboo carbonization caused by overlong heating time due to overhigh conveying speed or overlong conveying speed are avoided, and the reasonable thermal contact time and softening degree of the round bamboo are ensured by the formula operation.
As a further improvement of the invention, the conveying mechanism and the heating mechanism are linked by a temperature detection system arranged in the heating mechanism, when the temperature detection system detects that the temperature in the heating mechanism is higher than 300 ℃, the feeding speed a of the conveying mechanism is (0.1-0.15) l/delta (mm/s), and when the temperature detection system detects that the temperature in the heating mechanism is lower than 300 ℃, the feeding speed a of the conveying mechanism is (0.05-0.1) l/delta (mm/s).
As a further improvement of the invention, the conveying mechanism runs at a constant speed and cooperates with the heating mechanism to ensure that the round bamboo is heated uniformly, thereby ensuring that the member is stressed uniformly when being bent.
As a further improvement of the invention, the heating mechanism is a tubular heater, and/or the conveying mechanism is a crawler, the crawler is provided with a plurality of pairs of ribs which are arranged in parallel along the length direction of the crawler, each rib is provided with a V-shaped groove along the middle position of the width of the crawler, and the V-shaped grooves are used for clamping round bamboos.
As a further improvement of the invention, the opening width and the depth of the V-shaped groove are not more than 1.5 times of the diameter of the round bamboo.
As a further improvement of the invention, the tubular heater can provide the temperature of not less than 300 ℃ so as to realize the rapid heating of the round bamboo and avoid the carbonization of the round bamboo caused by high temperature. The diameter of the tubular heater is not more than 15cm, and the length of the tubular heater is not less than 40cm, so that a reasonable heating area and thermal contact time of the round bamboo are guaranteed.
As a further improvement of the invention, the bending mechanism in the step 2) is composed of a plurality of pairs of semicircular calipers, and the circular bamboo bending processing is realized by applying pressure through the calipers in a closing manner.
As a further improvement of the invention, the bending mechanism applies bending load from the inner side and the outer side of the round bamboo simultaneously through a semicircular caliper by a hydraulic system so as to enable the round bamboo to be stressed uniformly.
As a further improvement of the invention, each pair of semicircular calipers are symmetrically arranged along the inner side and the outer side of the round bamboo, namely the compression side and the tension side in the bending process, and the bending mechanism applies bending load from the inner side and the outer side of the round bamboo simultaneously through the semicircular calipers by a hydraulic system so as to enable the round bamboo to be stressed uniformly.
The first pair of calipers close to the side of the tubular heater is mainly used for clamping round bamboos in the feeding direction and does not move along with the feeding of the round bamboos in the bending process of the round bamboos. Except for the first pair of calipers close to the side of the tubular heater, the other calipers move forwards gradually along with the feeding of the round bamboos according to the preset shape of the bending component and apply bending load to the round bamboos to realize the bending.
As a further improvement of the invention, the width of each semicircular caliper is 1 cm-5 cm, the total contact area of the calipers and the surface of the round bamboo is 20% -70% of the bending surface area, the contact area of the calipers and the surface of the round bamboo at the main stress position is not less than 60%, so that the calipers and the round bamboo are ensured to have sufficient contact area, stress concentration is avoided, and meanwhile, a reasonable free reaction space is provided for the incompletely plastic round bamboo.
As a further improvement of the invention, the calipers are composed of a rigid semicircular ring part and an elastic semicircular ring part so as to adapt to different sections of the round bamboo and ensure that the calipers are fully contacted with the surface of the round bamboo to ensure that the round bamboo is uniformly stressed. The rigid semicircular ring part can be made of steel, and the elastic semicircular ring part can be made of high-temperature-resistant rubber. A high-elasticity high-temperature-resistant rubber layer is arranged between the rigid calipers and the round bamboo to adapt to the diameter change of the round bamboo and ensure uniform stress.
As a further improvement of the present invention, the specific steps of step 3) are: spraying cooling water to the top of the bent round bamboo through a spraying device, so that the cooling water flows out along the side wall of the round bamboo from the bottom, and cooling and shaping the round bamboo are realized; and (3) immediately spraying cooling water for cooling after the bending treatment in the step 2) is finished, and stopping when the surface temperature of the round bamboo is reduced to be close to the room temperature.
As a further improvement, the invention provides an integrated processing method for softening, bending and shaping round bamboos, which comprises the following steps:
the method comprises the following steps: feeding: conveying round bamboos by a crawler belt;
step two: softening: the crawler belt enters the tubular heater from the inlet of the tubular heater at a certain transmission speed, and the tubular heater is utilized to heat the round bamboo in the full circumferential direction so as to fully soften the round bamboo;
Step three: and (3) pressing and bending: the round bamboo conveyed from the outlet of the tubular heater enters a bending mechanism consisting of a plurality of pairs of semicircular calipers, and the calipers are closed to apply pressure to realize the bending of the round bamboo;
step four: cooling and shaping: after the round bamboo is pressed and bent, cooling water is sprayed by a cooling system arranged above the bending mechanism, the cooling water flows out from the top of the round bamboo through the side wall and the bottom of the round bamboo, cooling and shaping of the round bamboo are achieved, the round bamboo is placed on the bending mechanism for a certain time and then is sent out by a feeding mechanism, and machining of a round bamboo bending component is completed.
As a further improvement, the invention provides an integrated round bamboo processing system, which comprises a conveying mechanism, a heating mechanism, a bending mechanism and a cooling mechanism, wherein the heating mechanism comprises an inlet and an outlet, the conveying mechanism conveys round bamboos in the heating mechanism, the bending mechanism is arranged at the outlet of the conveying mechanism, and the cooling mechanism is arranged above the bending mechanism.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the round bamboo integrated processing method, the sequential flow processing procedures of conveying, heating, softening, bending and shaping are formed, the defect that round bamboo processing standardization is difficult to realize in the prior art is overcome, the dependence degree of round bamboo bending on manual operation is reduced, the processing efficiency, the product quality and the processing precision of the bent round bamboo are improved, and the technical application field of the round bamboo is expanded.
(2) According to the round bamboo integrated processing method, softening and heating are carried out in the round bamboo transportation process, on one hand, the transportation process and the heating process can be combined into a whole, so that the time is remarkably saved, the processing effect is improved, on the other hand, the heating time can be controlled through the transmission speed, round bamboos which are difficult to heat and have large diameters are heated at a slow speed, round bamboos which are easy to heat and have small diameters are heated at a fast speed, raw materials with large differences can be subjected to unified heating treatment through control, the subsequent bending operation is facilitated, and the precision and the standardization degree of products are improved.
(3) According to the round bamboo integrated processing method, the conveying speed a is determined according to the wall thickness delta of the round bamboo and the length l of the heating mechanism, and the three are calculated according to the relation: and a is (0.05-0.15) l/delta (mm/s), so that the conveying speed can be calculated according to the wall thickness delta of the round bamboo and the length l of the heating mechanism, the heating process is more stable, and the defects that the round bamboo is carbonized due to incomplete heating and insufficient softening degree caused by too high conveying speed or too long heating time caused by too low conveying speed are avoided. The reasonable thermal contact time and the softening degree of the round bamboo are ensured through the formulated operation.
(4) According to the integrated processing method of the round bamboo, the conveying mechanism adopts the crawler belt, the crawler belt is provided with the plurality of pairs of ribs which are arranged in parallel along the length direction of the crawler belt, the V-shaped groove is formed in the middle position of each rib along the width of the crawler belt, the V-shaped groove can enable the round bamboo to be clamped more stably and firmly, the position of the round bamboo is prevented from moving in the transportation process, meanwhile, the tubular heater is adopted to heat the periphery of the round bamboo under the condition that the groove stably fixes the round bamboo, all parts of the round bamboo can be heated more uniformly, the subsequent bending processing is facilitated, and the precision of the process is further improved.
(5) The round bamboo integrated processing method provided by the invention has the advantages that the whole process is tightly matched, round bamboo subjected to heating processing is conveyed from the outlet of the heater and then enters the bending mechanism for bending processing, cooling processing is immediately carried out after the bending is finished, the time is further saved, the efficiency is further improved, meanwhile, a cooling water system is adopted to spray cooling water from the top of the round bamboo and then flows out from the bottom of the round bamboo, the cooling water can be further circularly processed, the operation cost is reduced, the round bamboo is continuously placed in the bending mechanism for a proper time after the cooling is finished so that the bending effect is more stable, and the phenomenon that the plasticity of the round bamboo is reduced due to the rebound or overlong placing time of the round bamboo caused by premature unloading is avoided.
Drawings
Fig. 1 is a schematic view of a crawler in a conveying mechanism in the present embodiment;
FIG. 2 is a schematic view of a round bamboo feeding and discharging in a tubular heater;
fig. 3 is a schematic view of the bending mechanism pressing and bending the round bamboo.
Detailed Description
The invention is further described with reference to specific examples.
It should be noted that the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
As used herein, the term "about" is used to provide the flexibility and inaccuracy associated with a given term, measure or value. The degree of flexibility for a particular variable can be readily determined by one skilled in the art.
As used herein, at least one of the terms "is intended to be synonymous with one or more of. For example, "at least one of A, B and C" explicitly includes a only, B only, C only, and combinations thereof, respectively.
Concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such a range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of about 1 to about 4.5 should be interpreted to include not only the explicitly recited limit values of 1 to about 4.5, but also include individual numbers (such as 2, 3, 4) and sub-ranges (such as 1 to 3, 2 to 4, etc.). The same principle applies to ranges reciting only one numerical value, such as "less than about 4.5," which should be construed to include all of the aforementioned values and ranges. Moreover, such an interpretation should apply regardless of the breadth of the range or feature being described.
Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims.
The invention is further described with reference to specific examples.
Examples
The embodiment provides a round bamboo softening, bending and shaping integrated processing method, which comprises the following steps:
step 1) feeding round bamboos at a certain transmission speed by adopting a conveying mechanism, heating the round bamboos by adopting a heating mechanism in the feeding process, and softening the round bamboos;
step 2) bending the round bamboo processed in the step 1) by adopting a bending mechanism;
and 3) cooling and shaping the round bamboo treated in the step 2) by adopting a cooling mechanism.
The heating mechanism is provided with an inlet and an outlet which are respectively used for feeding and discharging round bamboos, and the conveying process and the round bamboo heating process of the conveying mechanism are completed in the heater at the same time.
And 3) cooling the bent round bamboo in the step 3) by using cooling water to realize sizing, and continuously placing the round bamboo in the bending mechanism for a certain time to finish processing, wherein the placing time is not less than 30min, so as to avoid the resilience of the bent round bamboo.
The heating mechanism is a tubular heater to uniformly heat the round bamboos in the whole circumferential direction at the same time.
The conveying speed a of the conveying mechanism is determined according to the wall thickness delta of the round bamboo and the length l of the heating mechanism, the conveying speed a of the conveying mechanism is determined according to the wall thickness delta of the round bamboo and the diameter of the heating mechanism, and the relation between the conveying speed a and the diameter l of the heating mechanism is (0.05-0.15) l/delta (mm/s).
The transmission device and the heating device realize linkage through a temperature detection system arranged in the heating device, when the temperature detection system detects that the temperature in the heating device is higher than 300 ℃, the transmission speed a of the transmission device is (0.1-0.15) l/delta (mm/s), and when the temperature detection system detects that the temperature in the heating device is lower than 300 ℃, the transmission speed a of the transmission device is (0.05-0.1) l/delta (mm/s).
The tubular heater can provide the temperature of not less than 300 ℃ so as to realize the rapid heating of the round bamboo and avoid the carbonization of the round bamboo at high temperature. So as to realize the rapid heating of the round bamboo and avoid the carbonization of the round bamboo at high temperature. The diameter of the tubular heater is not more than 15cm, and the length of the tubular heater is not less than 40cm, so that a reasonable heating area and thermal contact time of the round bamboo are guaranteed.
The conveying mechanism is a crawler belt, a plurality of pairs of ribs which are arranged in parallel along the length direction of the crawler belt are arranged on the crawler belt, a V-shaped groove is formed in the middle of each rib along the width of the crawler belt, and the V-shaped grooves are used for clamping round bamboos. The width and the depth of the opening of the V-shaped groove are not more than 1.5 times of the diameter of the round bamboo. In the embodiment, the width of the crawler belt for softening, bending and conveying the small-diameter round bamboos with the diameter of 3cm is 25cm, ribs which are arranged in parallel are coated every 10cm along the length direction of the crawler belt, and the width and the height of each V-shaped groove are 4 cm.
The schematic diagram of feeding and discharging of round bamboos in the tubular heater is shown in fig. 2, the tubular heater of the embodiment is a tubular electric furnace for softening round bamboos with the small diameter of 3cm, the inner diameter of the electric furnace is 6cm, the length of the electric furnace is 50cm, and the left side and the right side of a hearth are provided with an inlet and an outlet for feeding and discharging the round bamboos. The electric stove plate is internally and fully embedded with nickel-chromium resistance wires along the circumferential direction. In order to reduce the friction between the round bamboo and the electric furnace disc, a quartz glass tube is embedded on the inner wall of the electric donkey, and the outer diameter of the quartz glass tube is matched with the inner diameter of the electric furnace.
The bending mechanism in the step 2) is composed of a plurality of pairs of semicircular calipers, and the circular bamboo is bent by closing and applying pressure through the calipers. The bending mechanism applies bending load simultaneously from the inner side and the outer side of the round bamboo through the semicircular calipers by a hydraulic system so as to enable the round bamboo to be stressed uniformly. Each pair of semicircular calipers are symmetrically arranged along the inner side and the outer side of the round bamboo, namely the compression side and the tension side in the bending process, and the bending mechanism applies bending load simultaneously from the inner side and the outer side of the round bamboo through the semicircular calipers by a hydraulic system so as to enable the round bamboo to be stressed uniformly.
The first pair of calipers close to the side of the tubular heater is mainly used for clamping round bamboos in the feeding direction and does not move along with the feeding of the round bamboos in the bending process of the round bamboos. Except for the first pair of calipers close to the side of the tubular heater, the other calipers move forwards gradually along with the feeding of the round bamboos according to the preset shape of the bending component and apply bending load to the round bamboos to realize the bending.
The width of each semicircular caliper is 1 cm-5 cm, the total contact area of the calipers and the surface of the round bamboo is 20% -70% of the bending surface area, the contact area of the calipers and the surface of the round bamboo at the main stress position is not less than 60%, so that the calipers and the round bamboo are guaranteed to have sufficient contact area, stress concentration is avoided, and meanwhile, a reasonable free reaction space is provided for the incompletely plastic round bamboo.
The bending mechanism of the embodiment is used for 3cm small-diameter round bamboo bending equipment, the bending radius is 30cm, and the length of a round bamboo at the bending part is 1 m. As shown in figure 3, the bending mechanism adopts a hydraulic cylinder to pressurize round bamboos in a sectional manner, piston rods of the hydraulic cylinder are connected with symmetrically-arranged round bamboo clamping blocks, C-shaped steel pipes and high-temperature-resistant elastic rubber are arranged in the clamping blocks, and a high-elasticity high-temperature-resistant rubber layer is arranged between the rigid calipers and the round bamboos to adapt to the diameter change of the round bamboos and ensure uniform stress. The non-rigid connection of high temperature resistant rubber is realized to C style of calligraphy steel pipe edge adoption U style of calligraphy structure to realize the even pressurization to the circle bamboo. The shape of the C-shaped steel pipe is the same as that of the set bent round bamboo, and the high-temperature-resistant rubber changes along with the change of the shape of the round bamboo in the bending process. The length of the clamp blocks is 15cm, and the number of the clamp blocks is 5. The round bamboo is pressed and bent by the hydraulic system and the clamping block clamping mechanism.
The calipers are composed of a rigid semicircular ring part and an elastic semicircular ring part so as to adapt to different sections of the round bamboo and ensure that the calipers and the surface of the round bamboo are in full contact to ensure that the round bamboo is stressed uniformly. The rigid semicircular ring part can be made of steel, and the elastic semicircular ring part can be made of high-temperature-resistant rubber. A high-elasticity high-temperature-resistant rubber layer is arranged between the rigid calipers and the round bamboo to adapt to the diameter change of the round bamboo and ensure uniform stress.
The specific steps of the step 3) are as follows: spraying cooling water to the top of the bent round bamboo through a spraying device, so that the cooling water flows out along the side wall of the round bamboo from the bottom, and cooling and shaping the round bamboo are realized; and (3) immediately spraying cooling water for cooling after the bending treatment in the step 2) is finished, and stopping when the surface temperature of the round bamboo is reduced to be close to the room temperature.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The round bamboo softening, bending and shaping integrated processing method is characterized by comprising the following steps of: the method comprises the following steps:
step 1), feeding round bamboos at a certain transmission speed by adopting a conveying mechanism, heating the round bamboos by adopting a heating mechanism in the feeding process, and softening the round bamboos; the heating mechanism is a tubular heater, and/or the conveying mechanism is a crawler belt, a plurality of pairs of ribs which are arranged in parallel along the length direction of the crawler belt are arranged on the crawler belt, a V-shaped groove is formed in the middle of each rib along the width of the crawler belt, and the V-shaped grooves are used for clamping round bamboos; the conveying speed a of the conveying mechanism is determined according to the wall thickness delta of the round bamboo and the length l of the heating mechanism, and the relationship between the wall thickness delta of the round bamboo and the length l of the heating mechanism is (0.05-0.15) l/delta (mm/s);
step 2), bending the round bamboo processed in the step 1) by adopting a bending mechanism, wherein the bending mechanism is composed of a plurality of pairs of semicircular calipers, the calipers are closed to apply pressure to realize bending of the round bamboo, the first pair of calipers close to the side of the tubular heater are mainly used for clamping the round bamboo in the feeding direction, the first pair of calipers do not move along with feeding of the round bamboo in the bending process of the round bamboo, and the other calipers except the first pair of calipers close to the side of the tubular heater gradually move forward along with feeding of the round bamboo according to the preset shape of a bending component and apply bending load to the round bamboo to realize bending;
And 3) cooling and shaping the round bamboo treated in the step 2) by adopting a cooling mechanism.
2. The round bamboo softening, bending and sizing integrated processing method as claimed in claim 1, characterized in that: the heating mechanism is provided with an inlet and an outlet which are used for feeding and discharging round bamboos respectively, the conveying process and the round bamboo heating process of the conveying mechanism are completed in the heater at the same time, and/or the round bamboos in the step 3) are cooled and shaped by cooling water, and the round bamboos are processed after being continuously placed for a certain time in the bending mechanism after being cooled and shaped.
3. The round bamboo softening, bending and sizing integrated processing method as claimed in claim 2, characterized in that: the transmission mechanism and the heating mechanism are linked through a temperature detection system arranged in the heating mechanism, when the temperature detection system detects that the temperature in the heating mechanism is higher than 300 ℃, the transmission speed a of the transmission mechanism is (0.1-0.15) l/delta (mm/s), and when the temperature detection system detects that the temperature in the heating mechanism is lower than 300 ℃, the transmission speed a of the transmission mechanism is (0.05-0.1) l/delta (mm/s).
4. The round bamboo softening, bending and sizing integrated processing method as claimed in claim 3, characterized in that: the width of each semicircular caliper is 1-5 cm, the total contact area of the calipers and the surface of the round bamboo is 20-70% of the bending surface area, and the contact area of the calipers and the surface of the round bamboo at the main stress position is not less than 60%.
5. The round bamboo softening, bending and sizing integrated processing method as claimed in claim 4, wherein the processing method comprises the following steps: the caliper is composed of a rigid semicircular ring part and an elastic semicircular ring part, and/or the bending mechanism applies bending load simultaneously from the inner side and the outer side of the round bamboo through the semicircular caliper by a hydraulic system so as to enable the round bamboo to be stressed uniformly.
6. The round bamboo softening, bending and sizing integrated processing method as claimed in claim 5, characterized in that: the specific steps of the step 3) are as follows: spraying cooling water to the top of the bent round bamboo through a spraying device, so that the cooling water flows out along the side wall of the round bamboo from the bottom, and cooling and shaping the round bamboo are realized; and (3) immediately spraying cooling water for cooling after the bending treatment in the step 2) is finished, and stopping when the surface temperature of the round bamboo is reduced to be close to the room temperature.
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| CN202010710898.7A CN111844293B (en) | 2020-07-22 | 2020-07-22 | Round bamboo softening, bending and shaping integrated processing method and system |
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Citations (9)
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| CN206884128U (en) * | 2017-06-22 | 2018-01-16 | 江苏铭鼎新材料科技有限公司 | A kind of pvc pipe hauling machine |
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| EP1452659A2 (en) * | 2003-02-27 | 2004-09-01 | Markus Wassmer | Objects, in particular furniture of laminated bamboo |
| CN205343354U (en) * | 2015-12-02 | 2016-06-29 | 浙江三箭工贸有限公司 | Bamboo strip bending equipment |
| CN205497718U (en) * | 2016-02-01 | 2016-08-24 | 李美春 | Portable bamboo furniture skeleton bending machine |
| CN107097313A (en) * | 2017-07-05 | 2017-08-29 | 广东工业大学 | A kind of bamboo branch heats and softens bending apparatus |
| CN107097315A (en) * | 2017-07-05 | 2017-08-29 | 广东工业大学 | A kind of device of auxiliary hot bending bamboo |
| CN107796189A (en) * | 2017-12-01 | 2018-03-13 | 国际竹藤中心 | The drying of circle bamboo and former |
| CN208118054U (en) * | 2018-02-22 | 2018-11-20 | 建瓯市瓯竹竹业科技有限公司 | A kind of process equipment of round bamboo microwave softened shaping |
| CN209440366U (en) * | 2018-10-11 | 2019-09-27 | 江西竺尚竹业有限公司 | A kind of curved shaping equipment of bamboo and wood products' arc |
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