CN111730703B - Timber bending device with longitudinal and transverse bidirectional compression function and application method - Google Patents
Timber bending device with longitudinal and transverse bidirectional compression function and application method Download PDFInfo
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- CN111730703B CN111730703B CN202010710774.9A CN202010710774A CN111730703B CN 111730703 B CN111730703 B CN 111730703B CN 202010710774 A CN202010710774 A CN 202010710774A CN 111730703 B CN111730703 B CN 111730703B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a wood bending device with longitudinal and transverse bidirectional compression, which comprises a frame, a longitudinal loading assembly, a transverse loading assembly, a bending assembly and a steel belt, wherein the longitudinal loading assembly, the transverse loading assembly, the bending assembly and the steel belt are fixed on the frame, the longitudinal loading assembly and the transverse loading assembly are sequentially arranged along the length direction of the steel belt, the bending assembly and the transverse loading assembly are oppositely arranged on two sides of the steel belt, one end of the steel belt is fixed on the bending assembly, the front end of softened wood is positioned between the bending assembly and the steel belt, the longitudinal loading assembly is pressed on the rear end of the wood to extrude the wood to advance towards the direction of the bending assembly, and the transverse loading assembly is pressed on the steel belt to extrude the wood to cling to the bending assembly for bending.
Description
Technical Field
The invention relates to the technical field of wood bending, in particular to a wood bending device with longitudinal and transverse bidirectional compression and a using method thereof.
Background
A unique type of wood products is the use of certain methods to process wood into different curved shapes and to apply them to the furniture and construction industries, which are also common in everyday life. In the production process, the manufacturing method of the curved parts generally comprises three steps of sawing, pressurizing and bending and veneer gluing and bending.
At present, most of wood bending equipment adopted in the furniture industry is used for placing softened wood into a fixed die, the initial bending stage is three-point stress, namely, two ends of the wood lean against the high point of a female die of the die, the middle point is compressed by a male die, internal stress is rapidly generated and transferred to an inner layer and an outer layer of the wood, at the moment, the inner layer of the wood is easy to generate wrinkles, and the outer layer is easy to be broken.
At present, part of imported wood bending equipment is provided with a longitudinal pre-pressing device, but is generally longitudinally compressed and then bent, the bending and the compression are asynchronous, internal stress generated by compression and bending cannot be offset, defects such as inner layer folds and outer layer stretch cracks can be generated when the wood is bent, and the bending effect is poor.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a wood bending device with longitudinal and transverse bidirectional compression and a using method thereof, wherein the wood bending device reduces defects generated during wood bending and has a good wood bending effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a take timber bending device of horizontal two-way compression, includes the frame and is fixed in longitudinal loading subassembly, transverse loading subassembly, bending subassembly and the steel band in the frame, longitudinal loading subassembly and transverse loading subassembly set gradually along the length direction order of steel band, bending subassembly and transverse loading subassembly set up in the steel band both sides relatively, the one end of steel band is fixed in on the bending subassembly, and the timber front end after softening is located between bending subassembly and the steel band, longitudinal loading subassembly is exerted pressure in timber rear end and is advanced to bending subassembly direction with extrusion timber, transverse loading subassembly is exerted pressure on the steel band and is hugged closely bending subassembly with extrusion timber and bend.
As a further improvement to the above technical solution:
the longitudinal loading assembly comprises a feeding mechanism, a supporting mechanism and a longitudinal pressurizing mechanism, wherein the feeding mechanism and the supporting mechanism are oppositely arranged on two sides of wood, the longitudinal pressurizing mechanism is arranged between the feeding mechanism and the supporting mechanism and is used for pressurizing the rear end of the wood, the feeding mechanism is used for longitudinally feeding the wood, and the supporting mechanism is used for preventing the wood from being transversely deformed when the longitudinal pressurizing mechanism applies pressure.
The supporting mechanism comprises a longitudinal rolling pulley block, an adjusting valve and a transverse adjusting sliding rail, wherein the longitudinal rolling pulley block is tightly attached to one side of wood, the longitudinal rolling pulley block is fixed on the transverse adjusting sliding rail, the adjusting valve is abutted to the side part of the transverse adjusting sliding rail and connected with the frame, and the position of the transverse adjusting sliding rail is adjusted through the rotating adjusting valve so as to adjust the distance between the longitudinal rolling pulley block and the steel belt.
The longitudinal pressurizing mechanism comprises a longitudinal pressurizing oil cylinder and a stop block, wherein the stop block is abutted against the rear end of the wood and presses the rear end of the wood under the action of the longitudinal pressurizing oil cylinder.
The feeding mechanism comprises a longitudinal feeding motor and a longitudinal feeding chain, and the longitudinal feeding chain drives wood to travel towards the bending assembly under the driving of the longitudinal feeding motor.
The transverse loading assembly comprises a sliding block, a sliding rail, a transverse pressurizing oil cylinder and a transverse pressurizing wheel, the transverse pressurizing oil cylinder is fixedly connected with the sliding block, the sliding rail is fixed on the frame, the sliding block is in sliding fit with the sliding rail, and the transverse pressurizing wheel is arranged on one side, close to the steel belt, and is driven by the transverse pressurizing oil cylinder to press on the steel belt.
The bending assembly includes a bending wheel die and a bending power motor for driving the bending wheel die to rotate to bend the wood.
The bending assembly further comprises a locking device for fixing one end of the steel strip to the bending wheel die.
As a general inventive concept, the present invention also provides a method of using a wood bending apparatus with longitudinal and transverse bi-directional compression, comprising the steps of:
s1, placing softened wood between a steel belt and a longitudinal rolling pulley block;
s2, starting a longitudinal feeding motor to drive timber to move towards the bending assembly, and closing the timber after the front end of the timber is tightly propped against the steel belt;
s3, starting a bending power motor, closing after rotating to a preset angle, starting a transverse pressurizing oil cylinder and a longitudinal pressurizing oil cylinder to apply pressure to wood to compress the wood, and starting the bending power motor and a longitudinal feeding motor to bend the wood according to a preset rotating speed after the longitudinal compression rate of the wood reaches a preset value;
s4, after the wood is bent, closing a bending power motor, a longitudinal feeding motor and a longitudinal pressurizing oil cylinder, and performing pressure maintaining and cooling treatment on the wood;
s5, after the wood is cooled to a preset temperature, taking down the steel belt and the wood from the bending wheel die, and carrying out shaping treatment on the wood according to preset requirements.
As a further improvement to the above technical solution:
in the step S3, the preset angle is 15 °.
In the step S3, the pressure value applied by the transverse pressurizing oil cylinder is 0.8-1.0 MPa, and the pressure value applied by the longitudinal pressurizing oil cylinder is 1.2-2.0 MPa.
In the step S3, the preset rotating speed is 0.3-0.5 r/min.
In the step S3, the preset value of the longitudinal compression rate is 2-5%.
In the step S5, the preset temperature is less than 80 ℃.
Compared with the prior art, the invention has the advantages that:
according to the wood bending device with the longitudinal and transverse compression and the application method thereof, in the bending process, the wood is fully contacted with the bending assembly, the whole is stressed uniformly, the internal stress is generated in the wood during bending, the internal stress is transferred to the unbent end along the longitudinal direction of the wood, the longitudinal loading assembly and the transverse loading assembly respectively apply longitudinal and transverse acting forces to the wood, the internal stress generated by the longitudinal and transverse compression partially counteracts the internal stress generated by bending, the defects of inner layer wrinkles, outer layer stretch cracks and the like of the wood in the initial stage of bending the wood are greatly reduced, and the bending effect is better. The device has the advantages of wide applicability, low cost and simple process steps.
Drawings
Fig. 1 is a top view of a wood bending apparatus with longitudinal and transverse bi-directional compression according to the present invention.
Fig. 2 is a front view of the wood bending device with longitudinal and transverse bi-directional compression of the present invention.
Fig. 3 is a partial enlarged view at a in fig. 1.
The reference numerals in the drawings denote: 1. a longitudinal loading assembly; 11. a feed mechanism; 111. a longitudinal feed motor; 112. a longitudinal feed chain; 12. a support mechanism; 121. longitudinal rolling pulley block; 122. a regulating valve; 123. transversely adjusting the sliding rail; 13. a longitudinal pressurizing mechanism; 131. a longitudinal pressurizing oil cylinder; 132. a stop block; 2. a lateral loading assembly; 21. a slide block; 22. a slide rail; 23. a transverse pressurizing oil cylinder; 24. a transverse pressurizing wheel; 3. a bending assembly; 31. bending a wheel die; 32. a locking device; 33. a bending power motor; 4. a frame; 5. a steel strip; 6. and (3) wood.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples. The instruments or materials used in the present invention are commercially available unless otherwise specified.
Example 1:
as shown in fig. 1 to 3, the wood bending device with longitudinal and transverse bidirectional compression in this embodiment includes a frame 4, a longitudinal loading component 1, a transverse loading component 2, a bending component 3 and a steel belt 5 fixed on the frame 4, wherein the longitudinal loading component 1 and the transverse loading component 2 are sequentially arranged along the length direction of the steel belt 5, the bending component 3 and the transverse loading component 2 are oppositely arranged at two sides of the steel belt 5, one end of the steel belt 5 is fixed on the bending component 3, the front end of softened wood 6 is located between the bending component 3 and the steel belt 5, the longitudinal loading component 1 is pressed on the rear end of the wood 6 to extrude the wood 6 to advance towards the bending component 3, and the transverse loading component 2 is pressed on the steel belt 5 to extrude the wood 6 to be bent tightly against the bending component 3.
According to the wood bending device with the longitudinal and transverse compression, in the bending process, the wood 6 is fully contacted with the bending assembly 3, the whole stress is uniform, the internal stress is generated in the wood 6 during bending, the internal stress is transferred to the unbent end along the longitudinal direction of the wood 6, the longitudinal and transverse acting forces are respectively applied to the wood 6 through the longitudinal loading assembly 1 and the transverse loading assembly 2, the internal stress generated by the longitudinal and transverse compression partially counteracts the internal stress generated by bending, the defects of inner layer wrinkles, outer layer pull cracks and the like of the wood in the initial stage of bending the wood 6 are greatly reduced, and the bending effect is better.
In this embodiment, the longitudinal direction is perpendicular to the longitudinal direction of the wood 6, and the longitudinal direction is parallel to the longitudinal direction of the wood 6.
The longitudinal loading assembly 1 comprises a feeding mechanism 11, a supporting mechanism 12 and a longitudinal pressurizing mechanism 13, wherein the feeding mechanism 11 and the supporting mechanism 12 are oppositely arranged on two sides of the wood 6, the longitudinal pressurizing mechanism 13 is arranged between the feeding mechanism 11 and the supporting mechanism 12 and is used for pressing the rear end of the wood 6, the feeding mechanism 11 is used for longitudinally feeding the wood 6, and the supporting mechanism 12 is used for preventing the wood 6 from being transversely deformed when the longitudinal pressurizing mechanism 13 presses.
In this embodiment, the supporting mechanism 12 includes a longitudinal rolling pulley block 121, an adjusting valve 122 and a transverse adjusting sliding rail 123, the longitudinal rolling pulley block 121 is tightly attached to one side of the wood 6, the longitudinal rolling pulley block 121 is fixed on the transverse adjusting sliding rail 123, the adjusting valve 122 is abutted against the side of the transverse adjusting sliding rail 123 and is connected with the frame 4, and the position of the transverse adjusting sliding rail 123 is adjusted by rotating the adjusting valve 122 to adjust the distance between the longitudinal rolling pulley block 121 and the steel belt 5. When the longitudinal pressurizing mechanism 13 longitudinally loads the wood 6, the supporting mechanism 12 and the feeding mechanism 11 fix the side of the wood 6, preventing the side of the wood 6 from being laterally deformed.
In this embodiment, the lateral adjustment rail 123 is embedded in the frame 4.
In this embodiment, the longitudinal pressurizing mechanism 13 includes a stopper 131 and a stopper 132, and the stopper 132 abuts against the rear end of the wood and presses the rear end of the wood 6 by the longitudinal pressurizing cylinder 131. The longitudinal pressurizing mechanism 13 is responsible for applying longitudinal acting force to the rear end of the wood 6 to push the wood 6 to move, and the longitudinal acting force can adjust the load according to actual needs.
In the present embodiment, the longitudinal pressurizing cylinder 131 of the longitudinal pressurizing mechanism 13 is fixed to the frame 4 by a fixing block (not shown in the drawing). The longitudinal pressing means 13 are located on the same horizontal line as the wood 6.
In this embodiment, the feeding mechanism 11 comprises a longitudinal feeding motor 111 and a longitudinal feeding chain 112, and the longitudinal feeding chain 112 drives the timber 6 to travel towards the bending assembly 3 under the drive of the longitudinal feeding motor 111 to take charge of the longitudinal feeding of the timber 6.
In this embodiment, the timber 6 and the steel strip 5 are clamped together by a clamping device (not shown in the figure), the longitudinal feeding chain 112 is in contact with the steel strip 5, and when the longitudinal feeding chain 112 moves, the steel strip 5 is driven to move, so that the timber 6 is driven to move together.
The transverse loading assembly 2 comprises a sliding block 21, a sliding rail 22, a transverse pressurizing oil cylinder 23 and a transverse pressurizing wheel 24, wherein the transverse pressurizing oil cylinder 23 is fixedly connected with the sliding block 21, the sliding rail 22 is fixed on the frame 4, the sliding block 21 is in sliding fit with the sliding rail 22, and the transverse pressurizing wheel 24 is arranged on one side, close to the steel belt 5, and is driven by the transverse pressurizing oil cylinder 23 to pressurize the steel belt 5. By means of the cooperation of the slide 21 and the slide 22, the position of the transverse pressing cylinder 23 can be adjusted within a certain range in the transverse direction and is responsible for applying an adjustable load transversely to the wood 6.
The bending assembly 3 includes a bending wheel die 31 and a bending power motor 33, the bending power motor 33 for driving the bending wheel die 31 to rotate to bend the wood 6. The rotation speed of the bending power motor 33 can be adjusted accordingly according to the wood 6 raw material tree species.
The bending assembly 3 further comprises locking means 32, the locking means 32 being adapted to fix one end of the steel strip 5 to the bending die 31.
The application method of the wood bending device with the longitudinal and transverse bidirectional compression comprises the following steps:
s1: softening wood: heating the wood 6 to a glass transition temperature by means of steaming or boiling;
s2: wood loading: one end of the steel belt 5 is fixed on the bending wheel mould 31 through a locking device 32, the distance between the longitudinal rolling pulley block 121 and the steel belt 5 and the distance between the transverse pressurizing oil cylinder 23 and the steel belt 5 are adjusted according to the thickness of the wood 6, and the softened wood 6 is placed between the steel belt 5 and the longitudinal rolling pulley block 121;
s3: wood feeding: starting a longitudinal feeding motor 111, and stopping feeding after the front end of the wood 6 is tightly propped against the steel belt 5;
s4: wood compression: the bending power motor 33 is turned on, and the operation is stopped after 15 degrees of rotation (if the longitudinal pressurizing cylinder 131 is directly turned on, the force to be borne by the steel strip 5 is relatively large). Starting the transverse pressurizing cylinder 23 and the longitudinal pressurizing cylinder 131 to apply pressure to the wood 6 to compress the wood 6, wherein the transverse pressure of the transverse pressurizing cylinder 23 is set to be 0.8MPa (in other embodiments, 0.8-1.0 MPa can achieve the same or similar technical effects and can ensure that the wood 6 can be compressed and cannot be crushed), the longitudinal pressure of the longitudinal pressurizing cylinder 131 is set to be 1.2MPa (in other embodiments, 1.2-2.0 MPa can achieve the same or similar technical effects), and the longitudinal compression rate is controlled within a range of 2-5%;
s4: bending wood: simultaneously, the bending power motor 33 and the longitudinal feeding motor 111 are started, longitudinal and transverse pressure is kept, the rotating speed of the bending power motor 33 is controlled to be 0.3 r/min (in other embodiments, the same or similar technical effects can be achieved at 0.3-0.5 r/min, wood 6 is broken due to too high rotating speed, and the too slow production efficiency is low), so that the bending of the wood 6 is completed;
s5: pressure maintaining and cooling of wood: after the bending is completed, the bending power motor 33, the longitudinal feed motor 111 and the longitudinal pressurizing cylinder 131 are turned off, and the wood 6 is cooled to below 80 ℃.
S6: and (3) locking and shaping: when the temperature of the wood 6 is lower than 80 ℃, locking the two ends of the steel belt 5, taking down the wood 6 and the steel belt 5 from the bending wheel die 31, and conveying the wood 6 and the steel belt 5 to a drying kiln for drying and shaping.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (6)
1. A take timber bending device of horizontal and vertical two-way compression, characterized by: the bending machine comprises a frame (4) and longitudinal loading components (1), transverse loading components (2), bending components (3) and steel belts (5) which are fixed on the frame (4), wherein the longitudinal loading components (1) and the transverse loading components (2) are sequentially arranged along the length direction of the steel belts (5), the bending components (3) and the transverse loading components (2) are oppositely arranged on two sides of the steel belts (5), one end of each steel belt (5) is fixed on each bending component (3), the front end of a softened wood (6) is located between the bending components (3) and the steel belts (5), the longitudinal loading components (1) press the rear end of the wood (6) to extrude the wood (6) to advance towards the direction of the corresponding bending components (3), and the transverse loading components (2) press the steel belts (5) to extrude the wood (6) to be tightly bent by the bending components (3);
the longitudinal loading assembly (1) comprises a feeding mechanism (11), a supporting mechanism (12) and a longitudinal pressurizing mechanism (13), wherein the feeding mechanism (11) and the supporting mechanism (12) are oppositely arranged on two sides of the wood (6), the longitudinal pressurizing mechanism (13) is arranged between the feeding mechanism (11) and the supporting mechanism (12) and is used for pressurizing the rear end of the wood (6), the feeding mechanism (11) is used for longitudinally feeding the wood (6), and the supporting mechanism (12) is used for preventing the wood (6) from being transversely deformed when the longitudinal pressurizing mechanism (13) is used for pressurizing;
the supporting mechanism (12) comprises a longitudinal rolling pulley block (121), an adjusting valve (122) and a transverse adjusting sliding rail (123), wherein the longitudinal rolling pulley block (121) is tightly attached to one side of a piece of wood (6), the longitudinal rolling pulley block (121) is fixed on the transverse adjusting sliding rail (123), the adjusting valve (122) is abutted to the side part of the transverse adjusting sliding rail (123) and is connected with the frame (4), and the position of the transverse adjusting sliding rail (123) is adjusted through the rotating adjusting valve (122) so as to adjust the distance between the longitudinal rolling pulley block (121) and the steel belt (5);
the transverse loading assembly (2) comprises a sliding block (21), a sliding rail (22), a transverse pressurizing oil cylinder (23) and a transverse pressurizing wheel (24), wherein the transverse pressurizing oil cylinder (23) is fixedly connected with the sliding block (21), the sliding rail (22) is fixed on the frame (4), the sliding block (21) and the sliding rail (22) are in sliding fit, and the transverse pressurizing wheel (24) is arranged close to one side of the steel belt (5) and is driven by the transverse pressurizing oil cylinder (23) to press on the steel belt (5).
2. A wood bending device according to claim 1, wherein: the longitudinal pressurizing mechanism (13) comprises a longitudinal pressurizing oil cylinder (131) and a stop block (132), wherein the stop block (132) is abutted against the rear end of the wood and presses the rear end of the wood (6) under the action of the longitudinal pressurizing oil cylinder (131).
3. A wood bending device according to claim 1, wherein: the feeding mechanism (11) comprises a longitudinal feeding motor (111) and a longitudinal feeding chain (112), and the longitudinal feeding chain (112) drives the wood (6) to move towards the bending assembly (3) under the driving of the longitudinal feeding motor (111).
4. A wood bending device according to any one of claims 1 to 3, wherein: the bending assembly (3) comprises a bending wheel die (31) and a bending power motor (33), wherein the bending power motor (33) is used for driving the bending wheel die (31) to rotate so as to bend the wood (6).
5. The wood bending device of claim 4, wherein: the bending assembly (3) further comprises a locking device (32), and the locking device (32) is used for fixing one end of the steel belt (5) on the bending wheel die (31).
6. A method of using a wood bending apparatus with longitudinal and transverse bi-directional compression according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
s1, placing softened wood (6) between a steel belt (5) and a longitudinal rolling pulley block (121);
s2, starting a longitudinal feeding motor (111) to drive the timber (6) to move towards the bending assembly (3), and closing the timber after the front end of the timber (6) is tightly propped against the steel belt (5);
s3, starting a bending power motor (33), closing after rotating to a preset angle, starting a transverse pressurizing oil cylinder (23) and a longitudinal pressurizing oil cylinder (131) to apply pressure to the wood (6) to compress the wood (6), and starting the bending power motor (33) and a longitudinal feeding motor (111) to bend the wood (6) according to a preset rotating speed after the longitudinal compression rate of the wood (6) reaches a preset value;
s4, after the wood (6) is bent, closing a bending power motor (33), a longitudinal feeding motor (111) and a longitudinal pressurizing oil cylinder (131), and performing pressure maintaining cooling treatment on the wood (6);
s5, after the wood (6) is cooled to a preset temperature, taking down the steel belt (5) and the wood (6) from the bending wheel die (31), and shaping the wood (6) according to preset requirements;
in the step S3, the pressure value applied by the transverse pressurizing oil cylinder (23) is 0.8-1.0 MPa, and the pressure value applied by the longitudinal pressurizing oil cylinder (131) is 1.2-2.0 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710774.9A CN111730703B (en) | 2020-07-22 | 2020-07-22 | Timber bending device with longitudinal and transverse bidirectional compression function and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710774.9A CN111730703B (en) | 2020-07-22 | 2020-07-22 | Timber bending device with longitudinal and transverse bidirectional compression function and application method |
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| Publication Number | Publication Date |
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| CN111730703A CN111730703A (en) | 2020-10-02 |
| CN111730703B true CN111730703B (en) | 2023-08-11 |
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| CN202010710774.9A Active CN111730703B (en) | 2020-07-22 | 2020-07-22 | Timber bending device with longitudinal and transverse bidirectional compression function and application method |
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| CN113199580B (en) * | 2021-05-24 | 2023-05-09 | 临沂宝柳工艺品有限公司 | Bending processing cooking device for ash wood |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7082975B2 (en) * | 2004-01-14 | 2006-08-01 | Yamamoto Engineering Works Co., Ltd. | Method of bending wood materials and an apparatus for bending wood materials |
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