Bamboo sawing machine

Abstract

The utility model relates to a bamboo sawing machine which comprises a rack, a controller and a visual inspection element, at least one operating line is arranged on the rack, a front conveying device, a sawing device, a rear conveying device and a baffle are arranged on the operating line, the area, located between the sawing device and the baffle, of the operating line is a blanking area, and the rear conveying device is hung above the blanking area; each visual detection element corresponds to at least one adjacent operation line; the front conveying device comprises at least two sets of front clamping mechanisms, and the front clamping mechanism at least close to the sawing device is provided with a front power roller set used for pushing raw bamboos. The rear conveying device comprises at least two rear clamping mechanisms, and the rear clamping mechanism at least close to the sawing device is provided with a rear power roller set used for pushing the raw bamboos. The raw bamboo sawing machine can automatically saw raw bamboos fed on the raw bamboo sawing machine into equal-length bamboo sections, and can process tail sections of the raw bamboos, so that the utilization rate of the raw bamboos is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bamboo material processing, in particular to a bamboo sawing machine. Background Art

[0002] With the rapid development of the bamboo processing industry, the process from sawing to splitting the raw bamboo has basically been automated. The bamboo sawing machine is a device that saws the raw bamboo into equal-length bamboo segments. At present, the existing bamboo sawing machines mainly have the following two working modes: one is to transport the raw bamboo to the frame, transport the raw bamboo at a fixed distance through a clamping device (i.e., a feeding device), and then cut it with a saw blade. The other is to set a baffle at the end of the frame. The distance from the baffle to the saw blade is the length of the bamboo segment to be cut, and the frame only needs to continuously push the raw bamboo. Compared with mode one, mode two does not require the feeding device that pushes the raw bamboo forward to move back and forth, which is faster, has higher overall work efficiency, and is more popular in the market.

[0003] However, the bamboo sawing machine using mode 2 cannot process the tail section of the original bamboo. Figure 1 , which is the most common bamboo sawing machine adopting mode 2. Its feeding device is arranged before the saw blade 12. The feeding device generally includes two sets of conveying rollers 111 / 112 arranged in front and behind. Because the raw bamboo needs to hit the baffle 13 before it can be sawed, the distance between the saw blade 12 and the baffle 13 is defined as L1, the distance between the saw blade L2 and the conveying roller 111 is L2, the spacing between the conveying roller 111 and the conveying roller 112 is L3, and the remaining length of the raw bamboo is L4. When (L1+L2)<L4<(L1+L2+L3), although the raw bamboo can abut the baffle 13, the raw bamboo is only clamped by the conveying roller 112. When the conveying roller 111 no longer clamps the raw bamboo, the raw bamboo may be skewed. In addition, the saw blade 12 and the baffle 13 are suspended in the air (allowing the sawed bamboo segments to fall naturally for unloading), and the large head part of the raw bamboo will also droop, resulting in uneven sawn cuts and even possible damage to the saw blade. If L1<L4<(L1+L2), the tail section of the original bamboo will fall directly to the unloading, and the length of the bamboo section is unqualified. Therefore, the existing practice is usually to directly abandon the tail section of the original bamboo, and the tail section of the original bamboo is pulled out of the platform by the loading workers, and the pulled bamboo tail is treated as waste, which is relatively wasteful, or it is collected in batches and manually cut into bamboo sections of standard length, but it increases labor costs. Utility Model Content

[0004] The utility model aims to provide a bamboo sawing machine, which can automatically saw the raw bamboo loaded thereon into bamboo segments of equal length and can process the tail segment of the raw bamboo to ensure the utilization rate of the raw bamboo.

[0005] To achieve the above-mentioned purpose, the utility model discloses a bamboo sawing machine, which includes a frame, a controller and at least one visual detection element for detecting bamboo joints and bamboo tails, wherein the frame is provided with at least one working line, and the working line is provided with a front conveying device, a sawing device, a rear conveying device and a baffle in sequence, the working line is located between the sawing device and the baffle as a blanking area, and the rear conveying device is hung above the blanking area; each of the visual detection elements corresponds to at least one adjacently arranged working line;

[0006] The front conveying device includes at least two sets of front clamping mechanisms, and at least the front clamping mechanism arranged close to the sawing device is provided with a front power roller group for pushing the raw bamboo; the rear conveying device includes at least two sets of rear clamping mechanisms, and at least the rear clamping mechanism arranged close to the sawing device is provided with a rear power roller group for pushing the raw bamboo;

[0007] The visual detection element, the sawing device, the front clamping mechanism, the front power roller group, the rear clamping mechanism and the rear power roller group are connected to a controller.

[0008] Through the above arrangement, the tail segment of the raw bamboo with a remaining length in the range of L1 to (L1+L2+L3) can be clamped and transported by the rear conveying device located at the rear end of the sawing device, ensuring that the tail segment of the raw bamboo that meets the length requirements can be reliably sawed into standard bamboo segments, thereby ensuring the utilization rate of the raw bamboo.

[0009] Preferably, the front clamping mechanism and the rear clamping mechanism each include a clamping drive, a synchronous transmission assembly and two clamping arms, the synchronous transmission assembly includes two swing arms, one end of the swing arm is a hinged end, and the other end is a connecting end, the hinged end is hinged to the frame, the hinged ends of the two swing arms are meshed with each other and rotate synchronously; the clamping arms correspond to the swing arms one by one, and the clamping arms are connected to the connecting ends; the clamping drive drives the swing arms to swing. Through the above arrangement, the front clamping mechanism and the rear clamping mechanism only need one power to achieve the function of synchronous clamping.

[0010] Preferably, the front clamping mechanism of the front power roller group is not provided and the rear clamping mechanism of the rear power roller group is not provided, and the corresponding clamping arm has a circular cross section, or the corresponding clamping arm is rotatably connected to a first roller, and the first roller is coaxially arranged with the corresponding clamping arm. The above arrangement can facilitate the passage and centering of the raw bamboo, and avoid the problem of the bamboo joints and the clamping arms being stuck.

[0011] Preferably, the front power roller group and the rear power roller group each include a roller drive motor, two second rollers, two synchronous gears and two universal joints, the two synchronous gears are rotatably connected to the frame, and the two synchronous gears are meshed with each other, the roller drive motor is connected to any synchronous gear in a transmission manner; the second rollers, synchronous gears and universal joints correspond to each other, and the synchronous gears are connected to the second rollers through universal joints; the second rollers are locked or integrally formed with the corresponding clamping arms, and the clamping arms corresponding to the second rollers are rotatably connected to the swing arms. Through the above arrangement, the two second rollers can be ensured to rotate synchronously, and the output power and stability can be ensured. In addition, the two second rollers of the same power roller group share the same power source, which is more cost-saving.

[0012] Preferably, the sawing device includes a evasion motor, a swing arm, a connecting rod, a mounting seat, a saw blade and a saw blade motor. The middle section of the mounting seat is hinged to the frame, the saw blade is rotatably connected to one end of the mounting seat, the saw blade motor is arranged on the mounting seat and is transmission-connected to the saw blade; the other end of the mounting seat is hinged to one end of the connecting rod, the other end of the connecting rod is connected to one end of the swing arm, the other end of the swing arm is connected to the output shaft of the evasion motor and rotates synchronously, and the evasion motor is mounted on the frame. Through the above arrangement, when the sawing operation is not required, the saw blade can be raised to avoid interfering with the raw bamboo feeding and avoiding damage to the saw blade.

[0013] Preferably, each of the working lines is also provided with a pressing mechanism and at least two guide rollers, the pressing mechanism is arranged on the frame, the pressing mechanism includes a pressing cylinder, a pressing arm and a pressing roller, the pressing cylinder is connected to a controller; one end of the pressing arm is hinged to the frame, the pressing roller is rotatably connected to the other end of the pressing arm, and the pressing roller is arranged horizontally; the pressing cylinder is located above the pressing arm, the seat of the pressing cylinder is hinged to the frame, and the push rod of the pressing cylinder is hinged to the middle section of the pressing arm; at least a guide roller is arranged at the front end of the front conveying device and the rear end of the sawing device, the guide roller is rotatably connected to the frame, and the guide roller is arranged horizontally. By arranging the guide roller, the contact between the raw bamboo and the frame can be reduced, which is conducive to the pushing and feeding of the raw bamboo. By arranging the pressing mechanism to press the raw bamboo downward, when the raw bamboo is long, its big end (the end with the largest diameter of the raw bamboo) will not tilt up, which is conducive to sawing.

[0014] Preferably, it also includes a baffle mounting mechanism corresponding to the baffle one by one, the baffle mounting mechanism includes a fixed frame, a tilting frame, a mounting frame, an auxiliary cylinder and a plurality of buffer elastic members, the auxiliary cylinder is connected to a controller; the fixed frame is detachably connected to the frame, the lower end of the tilting frame is hinged to the fixed frame, the seat body of the auxiliary cylinder is hinged to the fixed frame, and the push rod of the auxiliary cylinder is hinged to the upper end of the tilting frame; the lower end of the mounting frame is a bending portion, the upper end of the mounting frame is a mounting portion, the baffle is connected to the mounting portion, the bending portion is hinged to the tilting frame, one end of the buffer elastic member abuts against the baffle or the mounting portion, and the other end of the buffer elastic member abuts against the tilting frame, and under normal conditions, the baffle is set vertically. Through the above arrangement, the spacing between the baffle and the saw blade can be easily adjusted. In addition, after each sawing is completed, by controlling the auxiliary cylinder to retract, the baffle can be moved a certain distance to the side away from the saw blade, which is conducive to bamboo cutting and avoids the problem of jamming.

[0015] Preferably, at least one in-place detection element for detecting the in-place status of the raw bamboo is also included, and the in-place detection element is connected to the controller. By setting the in-place detection element, it can be better ensured that the length of the bamboo segment cut out meets the requirements, and the sawing device and the conveying device can respond quickly, thereby improving the processing efficiency.

[0016] The utility model has the following beneficial effects:

[0017] The utility model can clamp and convey the tail section of the original bamboo with a shorter remaining length through the rear conveying device, so that the tail section of the original bamboo that meets the length requirement can be reliably sawed into standard bamboo sections, thereby ensuring the utilization rate of the original bamboo. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a simplified structural diagram of a bamboo sawing machine using mode 2 according to the prior art.

[0019] Figure 2 It is a schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of another viewing angle of the present invention.

[0021] Figure 4 Schematic diagram of the first front clamping mechanism.

[0022] Figure 5 It is a schematic diagram of the second front clamping pool mechanism and the front power roller group.

[0023] Figure 6 It is a schematic diagram of the pressing mechanism.

[0024] Figure 7 A schematic diagram of a sawing device.

[0025] Figure 8 A schematic diagram of the rear conveying device.

[0026] Fig. 9 Schematic diagram of the baffle mounting mechanism.

[0027] Fig.10 Schematic diagram of the positions of the first in-place detection element and the second in-place detection element.

[0028] Note: Fig.10 The arrow in the figure indicates the advancing direction of the original bamboo.

[0029] Main component symbols:

[0030] Frame 20, visual detection element 21, first guide roller 22, second guide roller 23, ramp 24;

[0031] A first front clamping mechanism 31, a second front clamping mechanism 32, a clamping driving member 33, a swing arm 34, a clamping arm 35, a front power roller set 36, a driving motor 361, a second roller 362, a synchronous gear 363, a universal joint 364, and a first roller 37;

[0032] A pressing mechanism 40, a pressing cylinder 41, a pressing arm 42, and a pressing roller 43;

[0033] Sawing device 50, avoidance motor 51, swing arm 52, connecting rod 53, mounting base 54, saw blade 55, saw blade motor 56;

[0034] A first rear clamping mechanism 61, a second rear clamping mechanism 62, and a rear power roller set 63;

[0035] Baffle 71, baffle mounting mechanism 72, fixing frame 73, tilting frame 74, auxiliary cylinder 75, mounting frame 76, bending portion 761, mounting portion 762, buffer elastic member 77, first in-position detection element 78, second in-position detection element 79;

[0036] Controller 80. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] like Figures 1 to 10As shown, the utility model discloses a bamboo sawing machine, which includes a frame 20, a controller 80 and at least one visual detection element 21 for detecting bamboo joints and bamboo tails (the end with the smallest diameter of the original bamboo). At least one working line is arranged on the frame 20, and each working line is provided with a front conveying device, a sawing device 50, a rear conveying device, a baffle 71, a material pressing mechanism 40, a guide roller, a baffle installation mechanism 72 and an in-place detection element. Each visual detection element 21 corresponds to at least one adjacently arranged working line. In this case, two working lines are taken as an example for explanation. The two working lines share a set of visual detection elements 21, which are elevated and arranged at the front end of the frame 20 and are located before the front conveying device. In this case, the direction from the front end to the rear end is the feeding direction of the original bamboo. Of course, it is also possible to configure one visual detection element 21 for each of the two working lines. Generally speaking, it is better that the horizontal distance between the visual detection element 21 and the saw blade 55 is equal to the horizontal distance between the saw blade 55 and the baffle 71, so as to facilitate the detection of the bamboo tail. The visual detection element 21 may be an industrial camera, and the visual detection element 21 is connected to the controller 80 .

[0039] The front conveying device includes two sets of front clamping mechanisms, which are defined as the first front clamping mechanism 31 and the second front clamping mechanism 32 according to the distance from the sawing device 50, that is, the first front clamping mechanism 31 is at the front end of the second front clamping mechanism 32. The first front clamping mechanism 31 and the second front clamping mechanism 32 both include a clamping drive 33, a synchronous transmission assembly and two clamping arms 35. The synchronous transmission assembly includes two swing arms 34, one end of the swing arm 34 is a hinged end, and the other end is a connecting end. The hinged end is hinged to the frame 20, and the hinged ends of the two swing arms 34 are meshed with each other and rotate synchronously. The clamping arm 35 corresponds to the swing arm 34 one by one, the clamping arm 35 is connected to the connecting end, and the clamping arm 35 is vertically arranged. The clamping drive 33 is a cylinder, which is connected to the controller 80. The seat of the cylinder is hinged to the frame 20, and the push rod of the cylinder is hinged to the swing arm 34. The clamping drive 33 can drive the swing arm 34 to swing. The front clamping mechanism arranged in this way only needs one power to realize the synchronous clamping function, and has a simple structure and is easy to install.

[0040] For the second front clamping mechanism 32, a front power roller group 36 for pushing the raw bamboo is also arranged thereon. Specifically, the front power roller group 36 includes a roller drive motor 361, two second rollers 362, two synchronous gears 363 and two universal joints 364. The roller drive motor 361 is connected to the controller 80. The two synchronous gears 363 are rotatably connected to the frame 20, and the two synchronous gears 363 are meshed with each other. The roller drive motor 361 is transmission-connected with any synchronous gear 363. In this case, the transmission connection is adopted in the form of gear meshing. The second roller 362, the synchronous gear 363 and the universal joint 364 correspond one to one. The synchronous gear 363 is connected to the second roller 362 through the universal joint 364. The second roller 362 corresponds one to one with the clamp arm 35 of the second front clamping mechanism 32. The second roller 362 and the corresponding clamp arm 35 are screw-locked or integrally formed. The clamp arm 35 corresponding to the second front clamping mechanism 32 is rotationally connected to the swing arm 34 corresponding to the second front clamping mechanism 32. Through the above arrangement, the two second rollers 362 can be ensured to rotate synchronously, and the output power and stability can be guaranteed. In addition, the two second rollers 362 of the same power roller group use the same power source, which saves costs.

[0041] For the first front clamping mechanism 31, the corresponding clamping arm 35 is designed to be cylindrical, or the first roller 37 is rotatably connected to the corresponding clamping arm 35, and the first roller 37 is coaxially arranged with the corresponding clamping arm 35. Such an arrangement can facilitate the passage and centering of the original bamboo, and avoid the problem of the bamboo joint and the clamping arm 35 being stuck. Of course, in order to obtain stronger power, the first front clamping mechanism 31 is also equipped with a front power roller group 36, and the connection relationship between the two refers to the arrangement of the second front clamping mechanism 32 and the front power roller group 36, which will not be repeated.

[0042] The pressing mechanism 40 is arranged on the frame 20, and includes a pressing cylinder 41, a pressing arm 42 and a pressing roller 43. The pressing cylinder 41 is connected to the controller 80. One end of the pressing arm 42 is hinged to the frame 20, and the pressing roller 43 is rotatably connected to the other end of the pressing arm 42. The pressing roller 43 is arranged horizontally, and the pressing roller 43 is located between the first front clamping mechanism 31 and the second front clamping mechanism 32. The pressing cylinder 41 is located above the pressing arm 42, and the seat of the pressing cylinder 41 is hinged to the frame 20, and the push rod of the pressing cylinder 41 is hinged to the middle section of the pressing arm 42. After such arrangement, the front clamping mechanism clamps the raw bamboo in the horizontal direction, and the pressing cylinder 41 can press the raw bamboo up and down in the vertical direction, thereby ensuring that the raw bamboo is pushed straight.

[0043] The sawing device 50 includes an avoidance motor 51, a swing arm 52, a connecting rod 53, a mounting seat 54, a saw blade 55 and a saw blade motor 56. The avoidance motor 51 and the saw blade motor 56 are both connected to the controller 80. The middle section of the mounting seat 54 is hinged to the frame 20, the saw blade 55 is rotatably connected to one end of the mounting seat 54, and the saw blade motor 56 is arranged on the mounting seat 54 and connected to the saw blade 55 through a belt transmission. The other end of the mounting seat 54 is hinged to one end of the connecting rod 53, the other end of the connecting rod 53 is connected to one end of the swing arm 52, the other end of the swing arm 52 is connected to the output shaft of the avoidance motor 51 and rotates synchronously, and the avoidance motor 51 is installed on the frame 20. Under normal conditions, one end of the saw blade 55 is raised on the mounting seat 54 to avoid interfering with the raw bamboo feeding and avoiding damage to the saw blade 55. When sawing operation is required, the saw blade motor 56 first drives the saw blade 55 to operate, and then the avoidance motor 51 operates to press the saw blade 55 downward to achieve sawing operation.

[0044] Two sets of guide rollers are provided, which are rotatably connected to the frame 20 and are arranged horizontally. One set of guide rollers is arranged at the front end of the clamping arm 35 of the first front clamping mechanism 31, defined as the first guide roller 22, and the other set is arranged at the rear end of the saw blade 55, defined as the second guide roller 23. Of course, some guide rollers can be added between the two sets of front clamping mechanisms. By providing guide rollers, the contact between the raw bamboo and the frame 20 can be reduced, which is conducive to the pushing and feeding of the raw bamboo.

[0045] For a newly loaded raw bamboo, it is pushed forward and exceeds the second front clamping mechanism 32 by external loading equipment or manually, and a photoelectric sensor or camera can be set above the saw blade 55 or the second front clamping mechanism 32 to detect whether the raw bamboo is loaded in place. After the raw bamboo is loaded in place, the front clamping mechanism and the pressing mechanism 40 are activated to clamp and press the raw bamboo, and then the front power roller group 36 is started to drive the raw bamboo forward. After a bamboo is sawed, the front clamping mechanism and the pressing mechanism 40 are opened to wait for the next sawing cycle.

[0046] The area between the sawing device 50 and the baffle 71 of the operation line is a material drop area, which is used for the sawed bamboo segments to fall freely and unload. A slope 24 can be set in the material drop area to facilitate guiding the bamboo segments to the outside of the frame 20 for collection and sorting. The two operation lines can share a slope 24, or the two operation lines can be set with separate slopes 24, which can be flexibly adjusted according to the actual site.

[0047] The rear conveying device is hung upside down above the material dropping area, and a high-rise can be set on the frame 20 for installing the rear conveying device. The rear conveying device includes two sets of rear clamping mechanisms, wherein the rear clamping mechanism arranged near the saw blade 55 is defined as the first rear clamping mechanism 61, and the other rear clamping mechanism is defined as the second rear clamping mechanism 62. In this case, the structural composition and connection relationship of the rear clamping mechanism are the same as the front clamping mechanism. In addition, the first rear clamping mechanism 61 is equipped with a rear power roller group 63, and the rear power roller group 63 is the same as the front power roller group 36. The connection between the rear power roller group 63 and the first rear clamping mechanism 61 is the same as the front power roller group 36 and the second front clamping mechanism 32, which will not be repeated here. Of course, in order to ensure power output, the second rear clamping mechanism 62 can also be equipped with a rear power roller group 63. After such a setting, the rear conveying device can clamp and convey the raw bamboo, and after the rear conveying device is released, the bamboo segment can fall and unload. In this case, it is preferred that the rear conveying device is only started when processing the tail segment of the raw bamboo to achieve energy saving and reduce machine damage.

[0048] The baffle mounting mechanism 72 includes a fixed frame 73, a tilting frame 74, a mounting frame 76, an auxiliary cylinder 75 and a plurality of buffer elastic members 77, wherein the auxiliary cylinder 75 is connected to the controller 80. The fixed frame 73 is detachably connected to the frame 20 by screws to adjust the distance between the baffle 71 and the saw blade 55. The lower end of the tilting frame 74 is hinged to the fixed frame 73, the seat of the auxiliary cylinder 75 is hinged to the fixed frame 73, and the push rod of the auxiliary cylinder 75 is hinged to the upper end of the tilting frame 74. The lower end of the mounting frame 76 is a bending portion 761, and the upper end of the mounting frame 76 is a mounting portion 762. The baffle 71 is welded or bolted to the mounting portion 762, and the bending portion 761 is hinged to the tilting frame 74. The buffer elastic member 77 is a spring, one end of which abuts against the baffle 71 or the mounting portion 762, and the other end abuts against the tilting frame 74. The in-place detection element can be a pressure sensor, which is arranged between the baffle 71 and the tilting frame 74. The original bamboo is pushed by the conveying device, and there will be a certain impact force when it abuts the baffle 71. Therefore, the pressure sensor can detect whether the end of the original bamboo abuts the baffle 71 by detecting the pressure in the horizontal direction of the baffle 71. The pressure sensor is connected to the controller 80. By setting the in-place detection element, it can be better ensured that the length of the bamboo segment cut out meets the requirements, and the sawing device 50 and the conveying device can respond quickly to improve the processing efficiency. Under normal circumstances, the baffle 71 is arranged vertically. After each sawing is completed, by controlling the auxiliary cylinder 75 to retract, the baffle 71 can be moved a certain distance to the side away from the saw blade 55, which is conducive to the bamboo segment and avoids the problem of jamming. Of course, the baffle 71 can also be directly bolted to the frame 20.

[0049] The operation steps of the utility model are as follows:

[0050] In the first step, the large end of the raw bamboo is manually loaded onto the frame 20, and the large end of the raw bamboo is made to exceed the front power roller group 36. An infrared sensor can be arranged above the saw blade to detect the position of the raw bamboo end, and the infrared sensor is connected to the controller. After the raw bamboo is manually loaded into place, the front clamping mechanism and the pressing mechanism 40 clamp the raw bamboo to center it, and the front power roller group 36 pushes the raw bamboo forward a certain distance, and the bamboo head of the raw bamboo is sawed off to remove the scar.

[0051] The second step is to detect the bamboo tail through the visual detection element 21. If the bamboo tail is not detected, the third step is executed. If the bamboo tail is detected, the fifth step is executed. In the case where the raw bamboo has just been loaded, it can be directly set that the bamboo tail is not detected during the first few sawing operations to improve the machine operation efficiency. The state of the raw bamboo just loaded can be obtained by judging the change in the diameter of the raw bamboo through the visual detection element 21. When the diameter of the raw bamboo detected by the visual detection element 21 changes from small to large, it means that a new bamboo has been loaded. Of course, this information can also be provided by manually pressing a button, etc., and the button is connected to the controller 80.

[0052] Step 3: Start the front conveying device to push the raw bamboo toward the baffle 71, the front clamping mechanism clamps the raw bamboo, and the front power roller group 36 drives the raw bamboo forward. After the end of the raw bamboo passes through the rear power roller group 63, the first rear clamping mechanism 61 is activated, and the rear power roller group 63 clamps the raw bamboo and assists in pushing it. The front power roller group 36 and the rear power roller group 63 rotate at the same speed until the end of the raw bamboo abuts the baffle 71. At this time, the in-position detection element feeds back to the controller 80, informing the controller 80 that the raw bamboo has moved into position and can perform sawing operations. Of course, this step does not need to start the first rear clamping mechanism 61 and the rear power roller group 63.

[0053] The fourth step is to start the sawing device 50, and after the original bamboo is sawed off, return to the second step. When the sawing device 50 is started, the front power roller group 36 and the rear power roller group 63 are stopped.

[0054] Step 5: Determine whether the remaining length of the current raw bamboo is greater than the set value, which is generally the standard length of the bamboo segment. If the remaining length of the current raw bamboo is greater than the set value, then execute step 6, otherwise, the front conveying device no longer clamps the raw bamboo, or the front conveying device pushes the raw bamboo in the reverse direction, and the raw bamboo is taken out manually or with external equipment.

[0055] Step 6: Start the front conveying device to push the raw bamboo, and start the rear conveying device according to the feeding amount of the front conveying device, until the end of the raw bamboo abuts the baffle 71, and then jump to step 4. After the front power roller group 36 is started, the first rear clamping mechanism 61 and the second rear clamping mechanism 62 are started in sequence according to their feeding amount, that is, the first rear clamping mechanism 61 and the rear power roller group 63 thereon are started after the raw bamboo passes through the first rear clamping mechanism 61. The rear power roller group 63 can also be started in advance, and the second rear clamping mechanism 62 is started after the raw bamboo passes through the second rear clamping mechanism 62, so as to avoid the rear conveying device blocking the raw bamboo from passing. The front power roller group 36 and the rear power roller group 63 rotate at the same speed.

[0056] As a preferred embodiment, in the third step and the sixth step, after the front power roller group 36 is started, the front power roller group 36 first pushes the raw bamboo at the first speed. When the advancement amount of the raw bamboo (i.e., the distance that the raw bamboo exceeds the saw blade 55) reaches the set value, the front power roller group 36 pushes the raw bamboo at the second speed, which is less than the first speed. When the end of the raw bamboo abuts the baffle 71 and triggers the in-place signal (given by the in-place detection element), the front power roller group 36 stops, and the raw bamboo fixed length ends. For example, if a 1.6m bamboo segment needs to be sawed, the front power roller group 36 pushes the raw bamboo at the first speed (high speed). When the advancement amount of the raw bamboo reaches 1.5m, the front power roller group 36 quickly switches to the second speed (low speed) to push the raw bamboo. This situation is more suitable for the situation where the raw bamboo will not slip with the conveying device. The advancement amount of the raw bamboo can be calculated by calculating the number of revolutions, speed, transmission ratio, etc. of the driving motor 361. Of course, it can also be roughly estimated by the running time of the timing motor.

[0057] As another preferred embodiment, in the third and sixth steps, after the front power roller group 36 is started, the front power roller group pushes the raw bamboo at a first speed (height), and when the end of the raw bamboo contacts the baffle 71 and triggers the first in-position signal (given by the first in-position detection element 78), the front power roller group 36 pushes the raw bamboo at a second speed (low speed), the second speed is less than the first speed, and when the end of the raw bamboo pushes the baffle 72 to move a set distance and triggers the second in-position signal (given by the second in-position detection element 79), the front power roller group 36 stops, and the raw bamboo fixed length is completed. This method requires that the baffle 71 is installed on the baffle installation mechanism 72, or a buffer structure is set between the baffle 71 and the frame 20. Under normal conditions, the baffle 71 is pushed toward the direction of the saw blade 55 by the buffer elastic member 77. At this time, the distance between the baffle 71 and the saw blade 55 is less than the set cutting length. When the end of the raw bamboo touches the baffle 71, the baffle 71 moves a little distance away from the saw blade 55 under the impact force. At this time, the baffle 71 or the mounting frame 76 triggers the first in-place detection element 78, thereby controlling the front power roller group 36 to switch from the first speed to the second speed. The front power roller group 36 continues to push the raw bamboo at the second speed, so that the baffle 72 continues to move away from the saw blade 55. The baffle 71 or the mounting frame 76 triggers the second in-place detection element 79, thereby controlling the front power roller group 36 to stop. At this time, the distance between the baffle 71 and the saw blade 55 is the set cutting length. The first in-place detection element 78 and the second in-place detection element 79 are arranged on the tilting frame 74.

[0058] As another preferred embodiment, in the third and sixth steps, after the front power roller group 36 is started, the front power roller group 36 pushes the raw bamboo at a first speed (high speed). When the amount of the raw bamboo pushed (which can be detected by a photoelectric sensor, or calculated or estimated by the speed of the driving motor 361, the running time, etc.) reaches a set value (for example, when the sawing length is set to 1.6m, the set value is set to 1.4m), the front power roller group 36 pushes the raw bamboo at a second speed (medium speed), which is less than the first speed. When the end of the raw bamboo contacts the baffle 71 and triggers the first in-place signal, the front power roller group 36 pushes the raw bamboo at a third speed (low speed), which is less than the second speed. When the end of the raw bamboo pushes the baffle 71 to move a set distance and triggers the second in-place signal, the front power roller group 36 stops, and the raw bamboo length setting ends. The second speed of the front power roller group 36 switches to the first speed, and the first speed to the stop, which can refer to the previous embodiment and will not be repeated.

[0059] Through the above arrangement, as long as the remaining length of the original bamboo is greater than the required length of the bamboo segment, the original bamboo can be reliably sawn into standard bamboo segments, thereby ensuring the utilization rate and processing rate of the original bamboo, and the tail segment of the original bamboo can be used more efficiently.

[0060] Of course, the bamboo sawing machine also performs a bamboo node avoidance operation when sawing bamboo, that is, to avoid the sawing point appearing on the bamboo node. This can be done in the second step by detecting the reference position through the visual detection element 21 (the distance from the reference position to the saw blade 55 is equal to the distance from the saw blade 55 to the baffle 71). If there is a bamboo node at the reference position, the front power roller group 36 is first used to push the original bamboo forward a certain distance so that there is no more bamboo node at the reference position, and then the end that exceeds the saw blade 55 is sawed off.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A bamboo sawing machine, characterized in that: The machine comprises a frame, a controller and at least one visual detection element for detecting bamboo joints and bamboo tails. The frame is provided with at least one working line. The working line is provided with a front conveying device, a sawing device, a rear conveying device and a baffle in sequence. The working line is located between the sawing device and the baffle as a blanking area. The rear conveying device is hung above the blanking area. Each of the visual detection elements corresponds to at least one adjacent working line. The front conveying device includes at least two sets of front clamping mechanisms, and at least the front clamping mechanism arranged close to the sawing device is provided with a front power roller group for pushing the raw bamboo; the rear conveying device includes at least two sets of rear clamping mechanisms, and at least the rear clamping mechanism arranged close to the sawing device is provided with a rear power roller group for pushing the raw bamboo; The visual detection element, the sawing device, the front clamping mechanism, the front power roller group, the rear clamping mechanism and the rear power roller group are connected to a controller.

2. The bamboo sawing machine according to claim 1, characterized in that: The front clamping mechanism and the rear clamping mechanism both include a clamping drive, a synchronous transmission assembly and two clamping arms. The synchronous transmission assembly includes two swing arms, one end of the swing arm is a hinged end, and the other end is a connecting end. The hinged end is hinged to the frame, and the hinged ends of the two swing arms are meshed with each other and rotate synchronously; the clamping arm corresponds to the swing arm one by one, and the clamping arm is connected to the connecting end; the clamping drive drives the swing arm to swing.

3. The bamboo sawing machine according to claim 2, characterized in that: The front clamping mechanism of the front power roller group is not provided, and the rear clamping mechanism of the rear power roller group is not provided, and the corresponding clamping arm cross-section is circular, or the corresponding clamping arm is rotatably connected to a first roller, and the first roller is coaxially arranged with the corresponding clamping arm.

4. The bamboo sawing machine according to claim 2, characterized in that: The front power roller group and the rear power roller group each include a roller drive motor, two second rollers, two synchronous gears and two universal joints. The two synchronous gears are rotatably connected to the frame and mesh with each other. The roller drive motor is transmission-connected to any synchronous gear; the second rollers, synchronous gears and universal joints correspond one to one, and the synchronous gears are connected to the second rollers via universal joints; the second rollers are locked or integrally formed with the corresponding clamping arms, and the clamping arms corresponding to the second rollers are rotatably connected to the swing arms.

5. The bamboo sawing machine according to claim 1, characterized in that: The sawing device includes a avoidance motor, a swing arm, a connecting rod, a mounting seat, a saw blade and a saw blade motor. The middle section of the mounting seat is hinged to the frame, the saw blade is rotatably connected to one end of the mounting seat, and the saw blade motor is arranged on the mounting seat and is transmission-connected to the saw blade; the other end of the mounting seat is hinged to one end of the connecting rod, the other end of the connecting rod is connected to one end of the swing arm, the other end of the swing arm is connected to the output shaft of the avoidance motor and rotates synchronously, and the avoidance motor is mounted on the frame.

6. The bamboo sawing machine according to claim 1, characterized in that: Each of the working lines is also provided with a pressing mechanism and at least two guide rollers, the pressing mechanism is arranged on a frame, the pressing mechanism includes a pressing cylinder, a pressing arm and a pressing roller, the pressing cylinder is connected to a controller; one end of the pressing arm is hinged to the frame, the pressing roller is rotatably connected to the other end of the pressing arm, and the pressing roller is arranged horizontally; the pressing cylinder is located above the pressing arm, the seat of the pressing cylinder is hinged to the frame, and the push rod of the pressing cylinder is hinged to the middle section of the pressing arm; at least a guide roller is arranged at the front end of the front conveying device and the rear end of the sawing device, the guide roller is rotatably connected to the frame, and the guide roller is arranged horizontally.

7. The bamboo sawing machine according to claim 1, characterized in that: It also includes a baffle mounting mechanism corresponding to the baffle one by one, the baffle mounting mechanism includes a fixed frame, a tilting frame, a mounting frame, an auxiliary cylinder and a plurality of buffer elastic members, the auxiliary cylinder is connected to a controller; the fixed frame is detachably connected to the frame, the lower end of the tilting frame is hinged to the fixed frame, the seat body of the auxiliary cylinder is hinged to the fixed frame, and the push rod of the auxiliary cylinder is hinged to the upper end of the tilting frame; the lower end of the mounting frame is a bending portion, the upper end of the mounting frame is a mounting portion, the baffle is connected to the mounting portion, the bending portion is hinged to the tilting frame, one end of the buffer elastic member abuts against the baffle or the mounting portion, and the other end of the buffer elastic member abuts against the tilting frame, and under normal conditions, the baffle is vertically arranged.

8. The bamboo sawing machine according to claim 1 or 7, characterized in that: It also includes at least one in-place detection element for detecting the in-place status of raw bamboo, and the in-place detection element is connected to the controller.

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