A visual measurement mechanism for bamboo tube dimensions

Abstract

The present invention discloses a visual measurement mechanism for bamboo tube size, comprising a frame, a dark box is fixedly installed on the top of the frame, the bottom of the protective seat is fixedly connected to the dark box through a fixed block, a movable block is provided on the top of the protective seat, a mounting plate is provided on the top of the movable block, a second motor is fixedly installed on the top of the mounting plate, the second motor is fixedly connected to a gear, the gear is meshed with a rack, the lower end of the rack is fixedly connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a point light source. For this visual measurement mechanism for bamboo tube size, after the inner diameter is irradiated by a point light source, the image presented by the edge of the inner diameter of the bamboo tube forms a contrast with the outside world, making it easier to draw the correct inner edge, which is convenient for later algorithm processing. Similarly, after the outer diameter is irradiated by a ring light source, the image presented by the edge of the outer diameter of the bamboo tube forms a contrast with the outside world, making it easier to draw the correct inner edge, which is convenient for later algorithm processing.

Description

Technical Field

[0001] The invention relates to the technical field of bamboo product processing, in particular to a bamboo tube size visual measurement mechanism. Background Art

[0002] Bamboo has a certain degree of taper, and the wall thickness of the bamboo tube gradually decreases from the base to the tip. The wall thickness of bamboo tubes of different bamboo ages and different origins also varies. Different bamboo products have different requirements for the thickness of basic manufacturing units such as bamboo strips and bamboo bundles, and they need to be sorted according to the wall thickness of the bamboo tube during initial processing. At present, there are two mainstream ways to sort: ① Mechanical measurement: Disadvantages 1. The mechanism is too complicated, which is difficult to process and install. 2. Since the mechanical measurement method is a contact measurement, it is easy to fail when encountering abnormal bamboo tubes. 3. The contact measurement needs to be inserted into the bamboo tube, and the distance between the bamboo node inside the bamboo tube and the end face is required to be high. ② Traditional visual measurement: Only the method of shooting the bamboo tube from the front of the surface light source is used to directly obtain the inner and outer diameters. This measurement method is prone to the change of the end face color due to external light, foreign matter on the bamboo tube surface, moisture on the bamboo tube surface, and the influence of the bamboo tube bamboo node too close to the end face, resulting in the measurement size deviation, which cannot meet the actual production requirements. To this end, we proposed a visual measurement mechanism for bamboo tube size. Summary of the invention

[0003] The object of the present invention is to provide a bamboo tube size visual measurement mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a visual measurement mechanism for bamboo tube size, comprising a frame, a dark box is fixedly installed above the frame, a first motor is arranged on one side above the dark box, a rotating shaft of the first motor is fixedly connected to a coupling, a first protective box is arranged on a side of the coupling away from the first motor, an active roller is arranged in the first protective box, a side of the coupling away from the first motor is fixedly connected to the active roller, a side of the dark box away from the first motor is provided with a second protective box matching the first protective box, a driven roller is arranged in the second protective box, the active roller and the driven roller are connected by a transmission belt, a protective seat is arranged on the outer side of the transmission belt, a fixed block is arranged on the bottom of the protective seat, a movable block is arranged above the protective seat, and a middle part below the movable block is connected to the transmission The driving belt is fixedly connected, a mounting plate is provided above the movable block, a side plate is provided on the mounting plate away from the first motor, limit blocks are provided at the upper and lower ends of the side plate, a rack is provided on one side of the limit block, a second motor is fixedly installed above the mounting plate, a rotating shaft of the second motor passes through the side plate and is fixedly connected to the gear, the gear is meshed with the rack, a first through slot is provided at the top of the dark box close to the rack, the lower end of the rack passes through the first through slot and is fixedly connected to the connecting rod, the connecting rod is fixedly connected to the point light source below, a support frame is provided on the dark box close to the first through slot, a ring-shaped light source is fixedly installed on the support frame, the dark box is fixedly connected to the support plate on the side away from the first through slot, a camera is fixedly installed above the support plate, a photoelectric switch is provided on the camera, and the end of the camera is located inside the dark box.

[0005] Preferably, a guide rail is provided on one side of the rack close to the limit block, and a sliding block matching the guide rail box is provided on the limit block.

[0006] Preferably, a lifting reference plate is provided below the frame near the first through slot, a hydraulic cylinder is provided near the first motor, the top of the hydraulic cylinder is fixedly connected to the baffle, and a second through slot matching the baffle is provided below the dark box.

[0007] Preferably, a control box is provided on the side of the frame away from the first through slot.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: after the visual measurement mechanism for bamboo tube dimensions uses a point light source to illuminate the inner diameter, the image presented by the edge of the inner diameter of the bamboo tube forms a contrast with the outside world, making it easier to draw the correct inner edge, which is convenient for later algorithm processing. Similarly, after the outer diameter is illuminated by a ring light source, the image presented by the edge of the outer diameter of the bamboo tube forms a contrast with the outside world, making it easier to draw the correct inner edge, which is convenient for later algorithm processing. This measurement mechanism has a simple structure and high measurement accuracy, and can effectively measure the inner and outer dimensions of the bamboo tube, effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention;

[0010] Figure 2 It is a front view of the present invention;

[0011] Figure 3 A top view of the present invention;

[0012] Figure 4 It is a right side view of the annular light source of the present invention when it is not installed;

[0013] Figure 5 It is a schematic structural diagram of part A of the present invention;

[0014] In the figure: 1 frame, 2 dark box, 3 first motor, 4 coupling, 5 first protection box, 6 second protection box, 7 fixed block, 8 active roller, 9 driven roller, 10 transmission belt, 11 protection seat, 12 movable block, 13 mounting plate, 14 side plate, 15 limit block, 16 rack, 17 guide rail, 18 slider, 19 second motor, 20 gear, 21 first through slot, 22 connecting rod, 23 point light source, 24 support frame, 25 annular light source, 26 control box, 27 lifting reference plate, 28 hydraulic cylinder, 29 baffle, 30 second through slot, 31 support plate, 32 camera, 33 photoelectric switch. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-5The present invention provides a technical solution: a visual measurement mechanism for bamboo tube size, comprising a frame 1, a dark box 2 is fixedly installed above the frame 1, a first motor 3 is arranged on one side above the dark box 2, a rotating shaft of the first motor 3 is fixedly connected to a coupling 4, a first protective box 5 is arranged on the side of the coupling 4 away from the first motor 3, an active roller 8 is arranged in the first protective box 5, a side of the coupling 4 away from the first motor 3 is fixedly connected to the active roller 8, a second protective box 6 matching the first protective box 5 is arranged on the side of the dark box 2 away from the first motor 3, a driven roller 9 is arranged in the second protective box 6, and the active roller 8 and the driven roller 9 are connected by a transmission. The transmission belt 10 is connected for transmission. A protective seat 11 is provided on the outside of the transmission belt 10. The protective seat 11 is fixedly connected to the dark box 2 through a fixed block 7 below. A movable block 12 is provided above the protective seat 11. The middle part below the movable block 12 is fixedly connected to the transmission belt 10. The first motor 3 is a stepping motor. When the first motor 3 is working, the first motor 3 drives the active roller shaft 8 to rotate through the coupling 4, so that the active roller shaft 8 drives the driven roller shaft 9 to rotate through the transmission belt 10. The protective seat 11 supports and guides the movable block 12. At the same time, when the transmission belt 10 moves, the transmission belt 10 drives the movable block 12 to move, thereby adjusting the position of the movable block 12.

[0017] A mounting plate 13 is provided above the movable block 12, and a side plate 14 is provided on the side of the mounting plate 13 away from the first motor 3. Limit blocks 15 are provided at the upper and lower ends of the side plate 14, and a rack 16 is provided on one side of the limit block 15. A second motor 19 is fixedly installed above the mounting plate 13, and the rotating shaft of the second motor 19 passes through the side plate 14 and is fixedly connected to a gear 20, and the gear 20 is meshed with the rack 16. A first through slot 21 is provided on the top of the dark box 2 near the rack 16, and the lower end of the rack 16 passes through the first through slot 21 and is fixedly connected to a connecting rod 22, and the connecting rod 22 is fixedly connected to a point light source 23 at the bottom. When the second motor 19 is working, the second motor 19 drives the gear 20 to rotate, so that the rack 16 meshing with the gear 20 can reciprocate in the vertical direction, so that the connecting rod 22 connected to the rack 16 drives the point light source 23 to reciprocate in the vertical direction, thereby adjusting the position of the point light source 23, and adjusting the position of the point light source 23 by the mutual rotation of the first motor 3 and the second motor 19 The point light source 23 can move in both horizontal and vertical directions, so that the point light source 23 can illuminate the inner diameter of the bamboo tube. The point light source 23 shoots forwardly relative to the camera 32, and the light source only shoots the inside of the bamboo tube, which can accurately depict the inner circle of the bamboo tube. A support frame 24 is provided on the side of the dark box 2 close to the first through groove 21, and a ring light source 25 is fixedly installed on the support frame 24. The ring light source 25 shoots reversely relative to the camera 32, and the bamboo tube is extended into the ring light source 25 for shooting, which can accurately depict the outer circle of the bamboo tube. The dark box 2 is fixedly connected to the support plate 31 on the side away from the first through groove 21, and a camera 32 is fixedly installed above the support plate 31. A photoelectric switch 33 is provided on the camera 32. The end of the camera 32 is located inside the dark box 2. The photoelectric switch 33 is started when the bamboo tube is placed in the ring light source 25, so that the hydraulic cylinder 28 drives the baffle 29 to descend, and the camera 32 records the irradiated image of the bamboo tube when the ring light source 25 and the point light source 23 irradiate the bamboo tube.

[0018] Furthermore, a guide rail 17 is provided on the side of the rack 16 close to the limit block 15, and a slider 18 matching the guide rail 17 box is provided on the limit block 15. The slider 18 slides in the guide rail 17, so that the limit block 15 guides and limits the rack 16, so that the rack 16 can stably perform reciprocating motion in the vertical direction.

[0019] Furthermore, a lifting reference plate 27 is provided below the frame 1 near the first through slot 21, a hydraulic cylinder 28 is provided on the lifting reference plate 27 near the first motor 3, the hydraulic cylinder 28 is fixedly connected to the baffle 29 above, a second through slot 30 matching the baffle 29 is provided below the dark box 2, the baffle 29 can be lifted and lowered under the drive of the hydraulic cylinder 28, and the baffle 29 passes through the second through slot 30 to limit the bamboo tube when the bamboo tube is placed inside the annular light source 25.

[0020] Furthermore, a control box 26 is provided on the side of the frame 1 away from the first through slot 21 , and the working process of the measuring mechanism can be controlled by the control box 26 .

[0021] Specifically, in the present invention, first, the bamboo tube is pushed into the middle of the annular light source 25 in the dark box 2, and the baffle 29 limits the position of the bamboo tube. The baffle 29 is a reference plate for measurement, and the distance between the camera 32 and the baffle 29 is the reference distance. After that, after the photoelectric switch 33 detects that the bamboo is in place, the baffle 29 is lowered. At this time, the annular light source 25 is turned on, and the camera 32 shoots the end face of the bamboo tube, measures the outer diameter dimensions of multiple positions of the bamboo tube, and uses a computer to calculate the center position of the bamboo tube. Then, the annular light source 25 is turned off, the point light source 23 is turned on, and the first motor 3 and the second motor 19 are started at the same time. The first motor 3 drives the transmission belt 10 to move through the active roller shaft 8, so that the point light source 23 moves left and right. The second motor 19 drives the rack 16 bonded thereto to move in the vertical direction through the gear 20, so that the point light source 23 moves up and down. Under the cooperation of the first motor 3 and the second motor 19, the point light source 23 is moved to the center position of the circle of the end face of the bamboo tube. At this time, the camera 32 takes a second shot to calculate the inner diameter dimensions of multiple positions of the bamboo tube. Finally, according to the computer algorithm, the thickness dimensions of the bamboo tube at multiple positions are obtained, so that multiple points on the positive and negative surfaces of the bamboo tube are comprehensively measured, thereby obtaining the minimum, maximum and average values ​​of the wall thickness of the bamboo tube.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bamboo tube size visual measurement mechanism, comprising a frame (1), Features: A dark box (2) is fixedly installed above the frame (1); a first motor (3) is provided on one side above the dark box (2); a rotating shaft of the first motor (3) is fixedly connected to a coupling (4); a first protective box (5) is provided on the side of the coupling (4) away from the first motor (3); an active roller shaft (8) is provided in the first protective box (5); a side of the coupling (4) away from the first motor (3) is fixedly connected to the active roller shaft (8); a second protective box (5) matching the first protective box (5) is provided on the side of the dark box (2) away from the first motor (3); 6), a driven roller shaft (9) is arranged in the second protection box (6), the active roller shaft (8) and the driven roller shaft (9) are connected to each other by a transmission belt (10), a protection seat (11) is arranged outside the transmission belt (10), the lower part of the protection seat (11) is fixedly connected to the dark box (2) by a fixed block (7), a movable block (12) is arranged above the protection seat (11), the lower middle part of the movable block (12) is fixedly connected to the transmission belt (10), a mounting plate (13) is arranged above the movable block (12), and the mounting plate (13) is away from the first A side plate (14) is provided on one side of the motor (3), and limit blocks (15) are provided at the upper and lower ends of the side plate (14), and a rack (16) is provided on one side of the limit block (15). A second motor (19) is fixedly installed above the mounting plate (13), and a rotating shaft of the second motor (19) passes through the side plate (14) and is fixedly connected to a gear (20), and the gear (20) is meshedly connected to the rack (16). A first through slot (21) is provided on the top of the dark box (2) near the rack (16), and the lower end of the rack (16) passes through the first through slot (21). The connecting rod (22) is fixedly connected to the connecting rod (22), and the connecting rod (22) is fixedly connected to the point light source (23) below. A support frame (24) is provided on the side of the dark box (2) close to the first through slot (21), and a ring light source (25) is fixedly mounted on the support frame (24). The dark box (2) is fixedly connected to a support plate (31) on the side away from the first through slot (21), and a camera (32) is fixedly mounted above the support plate (31). A photoelectric switch (33) is provided on the camera (32), and the end of the camera (32) is located inside the dark box (2).

2. A bamboo tube size visual measurement mechanism according to claim 1, Features: A guide rail (17) is provided on one side of the rack (16) close to the limit block (15), and a sliding block (18) matching the guide rail (17) box is provided on the limit block (15).

3. A bamboo tube size visual measurement mechanism according to claim 1, Features: A lifting reference plate (27) is provided below the frame (1) on the side close to the first through slot (21), a hydraulic cylinder (28) is provided on the side close to the first motor (3), the hydraulic cylinder (28) is fixedly connected to a baffle (29) above, and a second through slot (30) matching the baffle (29) is provided below the dark box (2).

4. A bamboo tube size visual measurement mechanism according to claim 1, Features: A control box (26) is provided on the side of the frame (1) away from the first through slot (21).

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