A bamboo board splicing method and a bamboo board splicing device

Abstract

The present application relates to the technical field of bamboo board production, and particularly relates to a bamboo board splicing method and a bamboo board splicing device, which comprises two transmission belts that are connected to each other, the transmission surface of the transmission belt is provided with a heater at intervals in a direction perpendicular to the transmission direction of the transmission belt, and the heaters between the two transmission belts are staggered. A long-width bamboo board is formed by splicing a plurality of bamboo pieces; the board surface of the bamboo board is alternately provided with a first pressing surface and a second pressing surface along the width direction of the bamboo board; a driving force moving along the length direction of the bamboo board is applied to the first pressing surface and the second pressing surface in sequence, and the second pressing surface and the first pressing surface are heated in sequence. The present application can realize simultaneous heating and shaping of a plurality of bamboo pieces.

Description

Technical Field

[0001] This invention relates to the field of bamboo board production technology, and particularly to a bamboo board splicing method and a bamboo board splicing device. Background Technology

[0002] Because bamboo is cylindrical, it is usually necessary to cut the whole bamboo into bamboo tubes, and then split the bamboo tubes longitudinally into 2-6 pieces with an arc-shaped cross-section. The bamboo is then processed by removing the outer nodes and the inner nodes, heating to soften it, and then rolling and flattening it to obtain bamboo strips. However, due to the high elasticity of the bamboo fibers and uneven stress during rolling, each flattened bamboo strip has varying degrees of bending. To splice the bamboo strips into bamboo panels, a wood splicing machine is disclosed in CN222003808U. In this machine, two bamboo strips are fed into the feed end of a conveyor device and flattened to ensure that the long sides of the two strips are at the same horizontal level. Simultaneously, the adhesive between the long sides of the two strips is heated to join them. However, this method requires splicing one strip at a time, resulting in low production efficiency for bamboo panels. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a bamboo board splicing method and a bamboo board splicing device, which can realize the simultaneous heating and shaping of multiple bamboo boards.

[0004] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a bamboo board splicing method, wherein multiple bamboo strips are spliced ​​to form a long bamboo board; the surface of the bamboo board is alternately arranged with a first pressing surface and a second pressing surface along its own width direction; a driving force that moves along the length direction of the bamboo board is applied to the first pressing surface and the second pressing surface in sequence, while the second pressing surface and the first pressing surface are heated in sequence.

[0005] Another technical solution adopted in this invention is: a bamboo board splicing device, comprising two mutually supporting conveyor belts, wherein heaters are arranged at intervals on the conveying surface of the conveyor belts along a direction perpendicular to their own conveying direction, and the heaters between the two conveyor belts are staggered.

[0006] The beneficial effects of this invention are as follows: multiple bamboo strips are initially spliced ​​together to form a long bamboo board, which is then fed into a conveyor belt. The conveyor belt applies a driving force to the first pressing surface of the bamboo board, enabling the bamboo board to move along its length. At the same time, a heater heats the second pressing surface of the bamboo board, causing some of the colloid between adjacent bamboo strips to solidify. Then, the bamboo board enters another conveyor belt, which applies a driving force to the second pressing surface of the bamboo board to ensure normal transport of the bamboo board. Simultaneously, a heater heats the first pressing surface of the bamboo board, causing the remaining colloid between adjacent bamboo strips to solidify, thereby completing the splicing of the bamboo board. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a bamboo board splicing device proposed in this invention; Figure 2 This is a top view of a bamboo board for a bamboo board splicing method proposed in this invention; Figure 3 This is a schematic cross-sectional view of the conveyor belt of a bamboo board splicing device proposed in this invention. Figure 1 ; Figure 4 for Figure 3 Enlarged view of part A of a bamboo panel splicing device; Figure 5 This is a schematic cross-sectional view of the conveyor belt of a bamboo board splicing device proposed in this invention. Figure 2 ; Figure 6 This is a schematic diagram of the positional structure between the heater and the conveyor belt surface of a bamboo board heating device proposed in this invention; Figure 7 This is a cross-sectional structural diagram of a flattening machine for a bamboo board splicing device proposed in this invention; Figure 8 for Figure 7 Enlarged view of part B of a bamboo panel splicing device; Figure 9 This is a schematic diagram of the hopper structure of a bamboo board splicing device proposed in this invention; Figure 10 This is a schematic diagram of the cutting machine structure of a bamboo board splicing device proposed in this invention; Label Explanation: 1. Conveyor belt; 11. First conveyor belt; 111. First floating pressure block; 12. Second conveyor belt; 121. First support beam; 2. Heater; 3. Third conveyor belt; 31. Second floating pressure block; 4. Fourth conveyor belt; 41. Second support beam; 5. Fifth transmission belt; 6. Sixth transmission belt; 7. Feed hopper; 71. Slide ramp; 72. Push block; 73. First reciprocating device; 74. First limiting plate; 75. Second limiting plate; 8. Cutting machine; 81. Second reciprocating device; 82. Cutting blade; 9. Bamboo strips; 10. Lifting device; 100, First pressing surface; 200, Second pressing surface. Detailed Implementation

[0008] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0009] Please refer to Figures 1 to 5 As shown, the present invention provides a bamboo board splicing device, which includes two mutually supporting conveyor belts 1. The conveyor surface of the conveyor belt 1 is provided with heaters 2 arranged at intervals along the direction perpendicular to its own conveying direction, and the heaters 2 between the two conveyor belts 1 are staggered.

[0010] Working principle: Multiple bamboo strips 9 are initially spliced ​​together to form a long bamboo board, which is then fed into conveyor belt 1. Conveyor belt 1 applies a driving force to the first pressing surface 100 of the bamboo board, allowing it to move along its length. Simultaneously, heater 2 heats the second pressing surface 200 of the bamboo board, causing some of the adhesive between adjacent bamboo strips 9 to solidify. The bamboo board then enters another conveyor belt 1, which applies a driving force to the second pressing surface 200 of the bamboo board to ensure normal transport. Heater 2 simultaneously heats the first pressing surface 100 of the bamboo board, causing the remaining adhesive between adjacent bamboo strips 9 to solidify, thus completing the splicing of the bamboo board. Furthermore, this structure eliminates the need to consider the width of the bamboo strips 9 used for splicing; once the desired length of bamboo board is reached, the long bamboo board is simply cut.

[0011] Please refer to Figure 6 As shown, in some embodiments, the height difference between the heating end face of the heater 2 and the transmission surface of the conveyor belt 1 is C, where 0 mm ≤ C ≤ 10 mm. Limiting the height difference between the heating end face of the heater 2 and the transmission surface of the conveyor belt 1 not only ensures smooth transmission of the bamboo board but also ensures heating of the colloid between the bamboo strips 9.

[0012] Please refer to Figure 3 As shown, the transmission belt 1 further includes a first transmission belt 11 and a second transmission belt 12 with their transmission surfaces facing each other and spaced apart.

[0013] As can be seen from the above description, the first conveyor belt 11 and the second conveyor belt 12 apply force to the upper and lower surfaces of the bamboo board, which not only ensures the transmission of the bamboo board, but also flattens the bamboo strips 9 under the squeezing action of the transmission surfaces of the first conveyor belt 11 and the second conveyor belt 12, so that the long sides of adjacent bamboo strips 9 can be at the same horizontal height.

[0014] It is worth noting that, to ensure the stability of the bamboo board conveying process, the rotation direction of the first conveyor belt 11 is opposite to that of the second conveyor belt 12. The conveying speed of the first conveyor belt 11 is the same as that of the second conveyor belt 12.

[0015] In some embodiments, a lifter 10 is connected to the first conveyor belt 11 and / or the second conveyor belt 12, and the lifter 10 is used to control the distance between the first conveyor belt 11 and the second conveyor belt 12, so that the conveyor belt 1 can be adapted to heating bamboo boards of various thicknesses.

[0016] Please refer to Figure 3 and Figure 4 As shown, the first conveyor belt 11 has a first floating pressure block 111 abutting against the inner side of its conveying surface; the second conveyor belt 12 has a first support beam 121 abutting against the inner side of its conveying surface.

[0017] As described above, by controlling the distance between the first conveyor belt 11 and the second conveyor belt 12 to be slightly less than the thickness of the bamboo board, and by utilizing the movement of the first floating pressure block 111 and the support of the first support beam 121, the transmission surfaces of the first conveyor belt 11 and the second conveyor belt 12 can be in close contact with the bamboo board, thereby ensuring the stable transmission of the bamboo board.

[0018] Specifically, such as Figure 4 As shown, the first floating pressure block 111 is connected to a cylinder, and the pressure on the first floating pressure block 111 is controlled by the air pressure of the cylinder. Of course, the pressure on the first floating pressure block 111 can also be controlled by connecting an oil cylinder and a spring.

[0019] In some embodiments, the first floating pressure block 111 has multiple pressure blocks arranged along the conveying direction of the first conveyor belt 11, and each pressure block floats independently. Since the curvature of each bamboo strip 9 is not uniform, by setting multiple independently floating pressure blocks, it is possible to ensure that each bamboo strip 9 is subjected to uniform force as much as possible, so as to avoid the bamboo strip 9 from separating and causing the long bamboo board to break.

[0020] Please refer to Figure 1 As shown, further, the feed end of the conveyor belt 1 is connected to a flattener.

[0021] As described above, after each bamboo strip 9 on the bamboo board is flattened by the flattening machine, it is ensured that the bamboo board can smoothly enter the conveyor belt 1 for heating and shaping.

[0022] Please refer to Figure 7 and Figure 8 As shown, the flattening machine further includes a third conveyor belt 3 and a fourth conveyor belt 4 with their conveying surfaces facing each other and spaced apart. The inner side of the conveying surface of the third conveyor belt 3 abuts against a second floating pressure block 31; the inner side of the conveying surface of the fourth conveyor belt 4 abuts against a second support beam 41.

[0023] As described above, by controlling the distance between the third conveyor belt 3 and the fourth conveyor belt 4 to be slightly less than the thickness of the bamboo board, and by utilizing the movement of the second floating pressure block 31 and the support of the second support beam 41, the conveying surfaces of the third conveyor belt 3 and the fourth conveyor belt 4 can be in close contact with the bamboo board. This not only ensures the transmission of the bamboo board, but also flattens the bamboo strips 9 on the bamboo board, so that the bamboo board can smoothly enter the conveyor belt 1 for heating and shaping.

[0024] Specifically, the second floating pressure block 31 is connected to a cylinder, and the pressure of the cylinder controls the clamping force on the second floating pressure block 31. Of course, the clamping force of the second floating pressure block 31 can also be controlled by connecting an oil cylinder and a spring.

[0025] It is worth noting that, to ensure the stability of the bamboo board conveying process, the rotation direction of the third conveyor belt 3 is opposite to that of the fourth conveyor belt 4. The conveying speed of the third conveyor belt 3 is the same as that of the fourth conveyor belt 4, the first conveyor belt 11, and the second conveyor belt 12.

[0026] In some embodiments, a lifter 10 is connected to the third conveyor belt 3 and / or the fourth conveyor belt 4, and the lifter 10 is used to control the distance between the third conveyor belt 3 and the fourth conveyor belt 4, so that the flattening machine can adapt to flattening bamboo boards of various thicknesses.

[0027] In some embodiments, the second floating pressure block 31 has multiple pressure blocks arranged along the conveying direction of the third conveyor belt 3, and each pressure block floats independently. Since the curvature of each bamboo strip 9 is not uniform, by setting multiple independently floating pressure blocks, it is possible to ensure that the force on each bamboo strip 9 is as uniform as possible, so as to avoid the bamboo strip 9 from separating and causing the long bamboo board to break.

[0028] Please refer to Figure 1 As shown, a bamboo board splicing device further includes a fifth conveyor belt 5 that is connected to the feed end of the conveyor belt 1, and the conveying speed of the fifth conveyor belt 5 is greater than the conveying speed of the conveyor belt 1.

[0029] As can be seen from the above description, due to the relatively high transmission speed of the fifth conveyor belt 5, the automatic assembly of bamboo strips 9 is achieved through differential speed.

[0030] It is worth noting that there is a transition between the fifth conveyor belt 5 and the first conveyor belt 1. The speed of this transition is the same as that of the first conveyor belt 1. This prevents some bamboo strips 9 from entering the first conveyor belt 1 for heating before they have been evenly formed into bamboo boards during the initial production process. Preferably, this transition is achieved using the aforementioned flattening machine.

[0031] Please refer to Figure 1 As shown, a bamboo board splicing device further includes a sixth conveyor belt 6 whose conveying surface is opposite to and spaced apart from the fifth conveyor belt 5.

[0032] As described above, the fifth conveyor belt 5 and the sixth conveyor belt 6 apply force to the upper and lower surfaces of the bamboo strip 9, which not only ensures the transmission of the bamboo strip 9, but also pre-flattens the bamboo strip 9 under the squeezing action of the transmission surfaces of the fifth conveyor belt 5 and the sixth conveyor belt 6, ensuring the subsequent splicing of bamboo boards.

[0033] It is worth noting that, in order to ensure the stability of the bamboo board conveying process, the rotation direction of the fifth conveyor belt 5 is opposite to that of the sixth conveyor belt 6.

[0034] In some embodiments, the transmission length of the fifth conveyor belt 5 is greater than that of the sixth conveyor belt 6. The feed end of the sixth conveyor belt 6 corresponds to the middle transmission area of ​​the fifth conveyor belt 5, and the discharge end of the sixth conveyor belt 6 corresponds to that of the fifth conveyor belt 5. The transmission speed of the fifth conveyor belt 5 is greater than that of the sixth conveyor belt 6. When the bamboo strip 9 enters between the fifth conveyor belt 5 and the sixth conveyor belt 6, because the upper and lower surfaces of the bamboo strip 9 are driven by different magnitudes of speed, the transmission speed of the bamboo strip 9 will tend to be the average of the speeds of the upper and lower surfaces. That is, the transmission speed of the bamboo strip 9 is less than that of the bamboo strip 9 that has not entered the area between the fifth conveyor belt 5 and the sixth conveyor belt 6, thereby achieving pre-splitting of the bamboo strip 9 on the fifth conveyor belt 5.

[0035] Please refer to Figure 1 and Figure 9 As shown, a bamboo board splicing device further includes a feeding hopper 7, the discharge port of the feeding hopper 7 is provided with a ramp 71 facing the feeding end of the fifth conveyor belt 5, and a pusher block 72 that moves vertically is provided above the discharge port.

[0036] As described above, the bamboo strips 9 in the hopper 7 are pushed one by one into the slide 71 by the pusher block 72 and then onto the fifth conveyor belt 5.

[0037] Please refer to Figure 9 As shown, the feeding hopper 7 further includes a first reciprocating device 73 and a first limiting plate 74. The first reciprocating device 73 has a movable end that moves toward the first limiting plate 74, and the pushing block 72 is slidably disposed on the first limiting plate 74.

[0038] As described above, multiple bamboo strips 9 coated with glue are placed vertically upward between the first reciprocating device 73 and the first limiting plate 74. The moving end of the first reciprocating device 73 is used to squeeze the bamboo strips 9 laterally, so that the bamboo strips 9 can only be pushed into the slide 71 one by one by the pusher block 72.

[0039] Please refer to Figure 9 As shown, further, the discharge port of the hopper 7 is provided with a second limiting plate 75 which is disposed opposite to the slide 71.

[0040] As can be seen from the above description, the second limiting plate 75 is used to prevent the bamboo strips 9 pushed out by the pusher block 72 from flipping over and falling onto the fifth conveyor belt 5, so that there is no adhesive bond between adjacent bamboo strips 9 to be spliced.

[0041] Please refer to Figure 1 and Figure 10As shown, the discharge end of the conveyor belt 1 is equipped with a cutter 8.

[0042] As described above, after the bamboo board is heated and shaped, it is cut by the cutting machine 8 to obtain the required length of bamboo board.

[0043] Please refer to Figure 9 As shown, the cutting machine 8 further includes a second reciprocating device 81 and a cutting tool 82. The second reciprocating device 81 has a movable end that moves parallel to the conveying direction of the conveyor belt 1, and the cutting tool 82 is disposed on the movable end of the second reciprocating device 81.

[0044] As described above, during the cutting process, the second reciprocating device 81 drives the cutting blade 82 to move, so that the cutting blade 82 and the bamboo board are relatively stationary, thereby avoiding the need to stop the transmission of the bamboo board during cutting and ensuring the flatness of the bamboo board cross-section.

[0045] A method for splicing bamboo boards involves splicing multiple bamboo strips (9) to form a long bamboo board; the surface of the bamboo board is alternately arranged with a first pressing surface 100 and a second pressing surface 200 along its width direction; a driving force that moves along the length direction of the bamboo board is applied to the first pressing surface 100 and the second pressing surface 200 in sequence, while the second pressing surface 200 and the first pressing surface 100 are heated in sequence.

[0046] It is worth noting that adjacent bamboo strips 9 are bonded together with adhesive to form a bamboo board. Heating is performed using thermal radiation heating or hot air heating, with thermal radiation heating being preferred to reduce excessive moisture loss from the bamboo strips 9 and prevent cracking.

[0047] Furthermore, the bamboo board is heated after being pressed and flattened.

[0048] Furthermore, multiple bamboo strips are linearly transmitted, and are transmitted sequentially at a first transmission speed and a second transmission speed, wherein the first transmission speed is greater than the second transmission speed.

[0049] Specifically, the difference between the first transmission speed and the second transmission speed is 0.01 m / s to 0.15 m / s.

[0050] Furthermore, it has two processing stations, one of which applies a driving force to the first pressing surface and simultaneously heats the second pressing surface; the other processing station applies a driving force to the second pressing surface and simultaneously heats the first pressing surface.

[0051] Furthermore, after the bamboo board is heated, it is cut to a fixed length. The fixed-length cutting has a translational speed in the same direction as the bamboo board's movement and a reset speed in the opposite direction to the bamboo board's movement. The translational speed is equal to the bamboo board's movement speed.

[0052] Furthermore, the fixed-length cutting is performed using a cutting knife, saw blade, or laser.

[0053] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for splicing bamboo boards, characterized in that: A long bamboo board is formed by splicing together multiple bamboo strips; The bamboo board surface has a first pressing surface and a second pressing surface alternately arranged along its width direction; A driving force that moves along the length of the bamboo board is applied sequentially to the first and second pressing surfaces, while the second and first pressing surfaces are heated sequentially.

2. The bamboo board splicing method according to claim 1, characterized in that: The bamboo boards are heated after being pressed and flattened.

3. The bamboo board splicing method according to claim 1, characterized in that: Multiple bamboo strips are linearly transmitted, and are transmitted sequentially at a first transmission speed and a second transmission speed, wherein the first transmission speed is greater than the second transmission speed.

4. The bamboo board splicing method according to claim 3, characterized in that: The difference between the first transmission speed and the second transmission speed is 0.01 m / s to 0.15 m / s.

5. The bamboo board splicing method according to claim 1, characterized in that: It has two processing stations, one of which applies a driving force to the first pressing surface and simultaneously heats the second pressing surface; Another processing station applies a driving force to the second pressing surface and simultaneously heats the first pressing surface.

6. The bamboo board splicing method according to claim 1, characterized in that: After the bamboo board is heated, it is cut to a fixed length. The fixed-length cutting has a translational speed in the same direction as the bamboo board's movement and a reset speed in the opposite direction to the bamboo board's movement. The translational speed is equal to the bamboo board's movement speed.

7. The bamboo board splicing method according to claim 6, characterized in that: The fixed-length cutting is performed using a cutting knife, saw blade, or laser.

8. A bamboo board splicing device, characterized in that: It includes two interconnected conveyor belts, and heaters are arranged at intervals on the conveyor surface of the conveyor belts along a direction perpendicular to their own conveying direction. The heaters between the two conveyor belts are staggered.

9. The bamboo board splicing device according to claim 8, characterized in that: The transmission belt includes a first transmission belt and a second transmission belt with their transmission surfaces facing each other and spaced apart.

10. The bamboo board splicing device according to claim 9, characterized in that: The first floating pressure block abuts against the inner side of the transmission surface of the first transmission belt; The inner side of the transmission surface of the second transmission belt abuts against the first support beam.

11. The bamboo board splicing device according to claim 8, characterized in that: The feed end of the conveyor belt is connected to a flattening machine.

12. The bamboo board splicing device according to claim 11, characterized in that: The flattening machine includes a third conveyor belt and a fourth conveyor belt with their conveying surfaces facing each other and spaced apart. The inner side of the transmission surface of the third transmission belt abuts against a second floating pressure block; The inner side of the transmission surface of the fourth transmission belt abuts against the second support beam.

13. The bamboo board splicing device according to claim 8, characterized in that: It also includes a fifth conveyor belt that connects to the feed end of the conveyor belt, the fifth conveyor belt having a conveying speed greater than that of the main conveyor belt.

14. The bamboo board splicing device according to claim 13, characterized in that: It also includes a sixth transmission belt whose transmission surface is opposite to and spaced apart from the fifth transmission belt.

15. The bamboo board splicing device according to claim 13, characterized in that: It also includes a feeding hopper, the discharge port of which is provided with a ramp facing the feed end of the fifth conveyor belt, and a pusher block that moves vertically above the discharge port.

16. The bamboo board splicing device according to claim 15, characterized in that: The hopper includes a first reciprocating device and a first limiting plate. The first reciprocating device has a movable end that moves toward the first limiting plate, and the pusher block is slidably disposed on the first limiting plate.

17. The bamboo board splicing device according to claim 15, characterized in that: The discharge port of the hopper is provided with a second limiting plate that is positioned opposite the landslide.

18. The bamboo board splicing device according to claim 8, characterized in that: The conveyor belt is equipped with a cutter at the discharge end.

19. The bamboo board splicing device according to claim 18, characterized in that: The cutting machine includes a second reciprocating device and a cutting tool. The second reciprocating device has a movable end that moves parallel to the conveyor belt's transmission direction, and the cutting tool is disposed on the movable end of the second reciprocating device.

Images