Intelligent timber analysis equipment

Abstract

The utility model discloses intelligent timber analysis equipment, and belongs to the field of timber screening. According to the provided intelligent timber analysis equipment, screening is mainly carried out through the screening rollers of a two-section structure, sundries smaller than available timber in size in timber are screened into the waste box through the first-section screening roller, and then the timber screened out in the second-section screening roller is a target material with the size conforming to that of the timber. The lower portion of a material receiving hopper of the second-section material screening roller is connected to a feeding conveying belt, the wood with the size preliminarily conforming to the size is conveyed to a detection area through the feeding conveying belt, secondary screening is conducted after visual processing is conducted through a camera and a clamping jaw arranged on the mechanical arm, and finally the wood is conveyed into a material box through a material distributing conveying belt. Compared with the prior art, manpower is completely separated, the problems that manual screening is low in efficiency and high in error rate are effectively solved, the whole process is controlled through programs, manual intervention cannot be conducted in the screening process, and data reliability is higher.

Description

Technical Field

[0001] The utility model belongs to the field of wood screening, and specifically relates to an intelligent wood analysis device. Background Art

[0002] In the paper-making industry, paper mills need thousands of tons of wood chips and wood blocks every day as raw materials for papermaking. Moreover, there are various types of wood, and the quality of the raw materials delivered is uneven. Not all the raw materials transported to the paper mill can be put into production in the factory area. For example, a truckload of poplar wood raw materials contains dust, wood chips, wood blocks less than 4 mm in length, wood blocks 4 mm - 40 mm in length, wood blocks greater than 40 mm in length, bark, and other varieties of wood. Among these raw materials, only the poplar wood blocks in the range of 4 mm - 40 mm in length can be used as raw materials.

[0003] At present, the sampling inspection method adopted by paper mills is manual screening. First, several parts are randomly selected from a truckload of wood, and several packages of equal weight of wood are taken out. Then, each package of wood is manually screened to analyze the weight of various components in the sampled wood, and then the ratio of the weight of the raw materials that can be used in the sample to the weight of the whole package of the sample is calculated. Based on this, the actual payment to the supplier is calculated.

[0004] There are many problems with manual sampling inspection. On the one hand, the labor intensity of wood screening is high. After long-term screening, the screening staff is prone to make mistakes, resulting in mis-screening and missed screening. On the other hand, there may be cases of fraud in manual screening. If the ratio of available wood in a batch of wood is too low, the wood supplier does not recognize the screening result, so additional expenses are required for screening supervision.

[0005] Therefore, a new solution that can screen wood faster and more accurately is needed. Summary of the Utility Model

[0006] Aiming at the above problems existing in the prior art, the purpose of the utility model is to provide an intelligent wood analysis device. This device mainly conducts screening through a roller and performs material separation and grasping through a camera set on a robotic arm. Finally, by weighing and comparing the wood collected after material separation, the proportion of the available part in the wood is determined, realizing the full automation of wood screening.

[0007] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0008] An intelligent wood analysis device, comprising: a screening unit and a detection unit; the screening unit includes: a screening drum, divided into a first section and a second section, and a receiving hopper. The side walls of the first-section screening drum and the second-section screening drum are both provided with screening holes, and the screening holes provided on the first-section screening drum are smaller than the screening holes provided on the second-section screening drum; the receiving hopper is arranged below the two sections of screening drums; the detection unit includes: a feeding conveyor belt and a robotic arm; the feeding conveyor belt is arranged below the receiving hopper of the second-section screening drum; the end of the robotic arm is provided with a gripper and a camera, for identifying and grasping qualified wood, and the robotic arm is arranged on the side of the feeding conveyor belt.

[0009] The aperture size of the screening holes opened on the first-section screening drum is d, and the aperture size of the screening holes opened on the second-section screening drum is D; d is the minimum length dimension of the screened wood that meets the standard; D is the maximum length dimension of the screened wood that meets the standard.

[0010] The end of the second-section screening drum is the discharge port, and a receiving hopper is arranged below the discharge port.

[0011] A waste box is arranged at the discharge port of the receiving hopper corresponding to the first-section screening drum and the discharge port, and a waste box is arranged at the end of the feeding conveyor belt.

[0012] The feeding conveyor belt is a vibrating conveyor belt, and baffles are arranged on both sides of the vibrating conveyor belt. The vibrating conveyor belt can further disperse the wood screened out by the second-section screening drum.

[0013] The gripper at the end of the robotic arm includes a sponge suction cup and a flexible gripper, and can grasp wood of any shape.

[0014] A waste material robotic arm is further arranged on the side of the feeding conveyor belt. A slide rail is arranged at the bottom of the waste material robotic arm, and the waste material robotic arm can move along the direction of the slide rail.

[0015] The detection unit further includes a material distribution conveyor belt. A material distribution partition is arranged along the conveyor belt direction of the material distribution conveyor belt, and material boxes are correspondingly arranged below the end of the material distribution conveyor belt according to the number of conveyor belts isolated by the material distribution partition.

[0016] A weighing mechanism is arranged behind the material distribution conveyor belt and the slide rail of the waste material robotic arm, and can weigh the wood in the waste box and the material boxes.

[0017] A wood output hopper is arranged above the weighing mechanism, and can centrally output the wood after the detection is completed.

[0018] As can be seen from the above solution, the intelligent wood analysis equipment provided in this specification mainly uses a two-stage screening structure of a screening drum. First, the sundries smaller than the size of the available wood in the wood are screened into the waste box through the first-stage screening drum. Then, the wood screened out by the second-stage screening drum is the target material that meets the size requirements. The receiving hopper below the second-stage screening drum is connected to the feeding conveyor belt. The wood that initially meets the size requirements is sent to the detection area by the feeding conveyor belt and undergoes a second screening after visual processing by the camera and gripper equipped on the robotic arm. Finally, it is sent into the material box through the sorting conveyor belt.

[0019] After the screening is completed, the robotic arm is used to send the material box loaded with qualified wood and the material box loaded with waste to the weighing mechanism for weighing. The ratio of the qualified wood obtained by the weighing equipment is output, and then the materials to be detected are centrally output to complete this screening operation.

[0020] Compared with the prior art, this equipment is completely free of manual operation, effectively solving the problems of low efficiency and high error rate in manual screening. And it is controlled by a program throughout the process, and manual intervention is not allowed during the screening process, so the data reliability is higher.

[0021] The specific structure and other functions of the intelligent wood analysis equipment provided in this specification will be partially listed in the following description. And the creativity of the intelligent wood analysis equipment provided in this specification can be fully explained through the practice or use of the equipment described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure;

[0023] Figure 2 is a schematic diagram of the screening drum structure;

[0024] Figure 3 is a schematic diagram of the detection part structure;

[0025] Figure 4 is a schematic diagram of the sorting part structure;

[0026] In the figure: 1. Screening drum; 2. Receiving hopper; 3. Drum brush; 4. Lifting cylinder; 5. Screening hole; 6. Feeding conveyor belt; 7. Vibrating feeding tray; 8. Robotic arm; 9. Gripper; 10. Camera; 11. Sorting conveyor belt; 12. Waste box; 13. Material box; 14. Weighing mechanism; 15. Wood output hopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the present utility model in combination with specific embodiments.

[0028] Such asFigure 1 As shown in the figure, the intelligent wood analysis device of the present utility model mainly includes two parts: a screening part and a detection part.

[0029] The main structure of the screening part is as Figure 2 shown. The main body of the screening device is a screening drum 1, and the main structure of the screening drum 1 is divided into two parts, namely the first-stage screening drum and the second-stage screening drum. The end of the first-stage screening drum is the feeding end of the wood to be screened, and the end of the second-stage screening drum is the discharging end of the wood to be screened.

[0030] Below both sections of the screening drum 1, there are receiving hoppers 2 that cover the entire occupied area of the screening drum. A number of screening holes 5 are evenly arranged on the side wall of the screening drum 1, and the aperture of the screening holes 5 in the first-stage screening drum is smaller than the aperture of the screening holes 5 in the second-stage screening drum.

[0031] In this embodiment, the size of the qualified wood to be screened is wood with a size of 4 mm to 40 mm. Therefore, the aperture of the screening holes 5 on the first-stage screening drum is 4 mm, and the aperture of the screening holes 5 on the second-stage screening drum is 40 mm. When the wood enters the screening drum 1, after the rolling of the screening drum 1 and the influence of gravity, the wood with a size smaller than 4 mm and other impurities will leak out from the screening holes 5 of the first-stage screening drum and fall into the receiving hopper 2 below the first-stage screening drum. And at the bottom of the receiving hopper 2 below the first-stage screening drum, there is a waste box 12 for accommodating waste and unqualified wood.

[0032] The remaining wood with a size greater than 4 mm will enter the second-stage screening drum due to the factor of gravity. At this time, the wood and other miscellaneous materials with a size greater than 4 mm and less than 40 mm will leak out from the screening holes 5 of the second-stage screening drum and enter the receiving hopper 2 below the second-stage screening drum. However, the bottom of the receiving hopper 2 below the second-stage screening drum is not provided with a waste box 12, but is directly connected to the feeding conveyor belt 6 of the detection part.

[0033] The remaining wood still in the screening drum 1 is unqualified wood and miscellaneous materials with a size greater than 40 mm. After screening, it is output from the discharging port at the end of the second-stage screening drum. And below the discharging port of the screening drum 1, there is also a receiving hopper 2, and at the bottom of the receiving hopper 2 below the discharging port, there is also a waste box 12 for accommodating unqualified wood.

[0034] In addition to the main component of the screening drum 1 for screening wood, a lifting cylinder 4 is provided below the feeding end of the first-stage screening drum. When it works, it can lift one end of the feeding port of the screening drum 1, making the overall screening drum 1 placed in an inclined state. The wood to be screened can slide from the feeding port to the discharging port, and during the sliding process, it passes through the rolling screening of the screening drum 1 to screen out the wood and miscellaneous materials whose sizes meet the requirements of the screening holes 5. At the same time, by adjusting the overall inclination angle of the screening drum 1 through the lifting cylinder 4, the actual screening time of the wood in the screening drum can also be controlled. When the lifting height of the lifting cylinder 4 becomes higher, the inclination angle of the screening drum 1 becomes larger, and the wood will slide from the feeding port to the discharging port more easily. On the contrary, when the lifting height of the lifting cylinder 4 becomes lower, the inclination angle of the screening drum 1 also becomes smaller, and the sliding speed of the wood will slow down, extending the time for the wood to roll and screen in the screening drum 1.

[0035] Since the screening of the screening drum 1 is carried out by the rolling of the drum to turn the wood inside, so that the wood of the corresponding size leaks out from the screening holes 5, and the irregularly shaped wood will get stuck in the screening holes 5 when trying to pass through the screening holes 5. Therefore, above the two-stage screening drum, a drum brush 3 is provided. The drum brush 3 works by pressing against the outer wall of the screening drum 1 during the rolling of the screening drum 1, squeezing the wood stuck in the screening holes 5 back into the interior of the screening drum 1, keeping the screening holes 5 unobstructed, and ensuring that it will not be blocked by the wood that does not match the size of the screening holes 5, thus affecting the wood screening effect.

[0036] Another part that constitutes the wood analysis of the present utility model is the detection part, and the detection part mainly includes two parts: a feeding conveyor belt 6 and a robotic arm 8.

[0037] Among them, the feeding of the feeding conveyor belt 6 is through a slideway provided below the second-stage screening drum. This slideway is arranged at the bottom outlet of the receiving hopper 2 below the second-stage screening drum. The wood screened by the second-stage screening drum will fall from the bottom outlet of the receiving hopper 2 onto the slideway. The end of the slideway is the feeding part of the feeding conveyor belt 6. In order to facilitate the subsequent sorting of the wood, the feeding conveyor belt 6 is a vibrating conveyor belt with a vibrating function. In this embodiment, the adopted vibration scheme is to set an independent vibrating feeding tray 7 at the feeding part of the feeding conveyor belt 6, and its specific structure is as Figure 3 shown.

[0038] The wood preliminarily screened by the screening drum 1 falls from the chute into the vibrating feeding tray 7. The vibrating feeding tray 7 continuously vibrates to disperse the wood. Moreover, the whole of the vibrating feeding tray 7 is inclined towards the conveyor belt part of the feeding conveyor belt 6. When dispersing the wood, the wood will also slide towards the feeding conveyor belt 6 until it falls into the conveyor belt part. And in order to prevent the wood from slipping off the side of the conveyor belt, a conveyor belt baffle is also provided on the side of the conveyor belt.

[0039] The wood passing above the feeding conveyor belt 6 is screened by the robotic arm 8. The qualified wood will be sent onto the sorting conveyor belt 11 for secondary transfer, while the remaining unqualified wood will fall into the waste box 12 at the end of the feeding conveyor belt 6.

[0040] The robotic arm 8 part includes two types of robotic arms 8. Among them, the first type of robotic arm 8 is arranged between the screening part and the detection part. The bottom of this robotic arm 8 is provided with a slide rail. In this embodiment, the screening drum 1 and the feeding conveyor belt 6 are arranged parallel to each other. This slide rail is also arranged parallel to the screening drum 1 and the feeding conveyor belt 6. The main function of the robotic arm 8 arranged on the slide rail is to clamp the waste box 12 arranged between the screening drum 1 and the feeding conveyor belt 6. Therefore, this robotic arm 8 is only provided with a claw 9 for transporting the material box.

[0041] The sorting conveyor belt 11 is arranged on the other side of the slide rail parallel to the feeding conveyor belt 6. A number of robotic arms 8 for secondary screening and detection are arranged between the sorting conveyor belt 11 and the feeding conveyor belt 6.

[0042] The robotic arm 8 used for secondary screening is a four-axis robot, and its end is respectively provided with a claw 9 and a camera 10. Among them, the claw 9 adopts a combined claw 9 of a bellows sponge suction cup and a flexible claw, which can grasp wood of all shapes. The function of the camera 10 is to take pictures of the wood to be secondarily screened before grasping and input it into the computer, and judge which wood should be clamped through the edited software.

[0043] The wood passing the secondary screening is clamped by the screening robotic arm 8 and placed on the sorting conveyor belt 11. And a number of parallel partitions are arranged on the sorting conveyor belt 11 to isolate the sorting conveyor belt 11 into multiple conveyor slots for further distinguishing various woods that meet the standard dimensions. At the end of the powder conveyor belt 11, corresponding material boxes 13 are arranged according to the number of conveyor slots for carrying the qualified wood.

[0044] In actual use, the operator first feeds the wood to be screened into the screening drum 1 from the feeding port, and conducts the first rough screening through the rolling of the screening drum 1. Subsequently, the wood that has passed the first screening enters the feeding conveyor belt 6, and the second screening is carried out by the robotic arm 8 of the detection unit. During the second screening, due to the recognition software and the accumulation of wood, there are still problems with screening errors. Therefore, during this process, every time the second screening is carried out, the robotic arm 8 between the screening unit and the detection unit will pick up the waste box 12 at the end of the feeding conveyor belt 6, and re-feed the waste sent out on the feeding conveyor belt 6 into the vibrating feeding tray 7 for screening again. This method is repeated multiple times for the second screening work to ensure the accuracy of the second screening.

[0045] The wood that has passed the second screening is sent by the screening robotic arm 8 into the corresponding transfer groove of the sorting conveyor belt 11 according to specific dimensions, and finally falls into the material boxes 13 of each specification.

[0046] After the screening work is completed, the robotic arm 8 clamps each waste box 12 and the material box 13 onto the weighing mechanism 14 at the end of the feeding conveyor belt 6 for separate weighing. The terminal computer calculates the proportion of each part in the screened wood of this batch, and finally obtains the content of qualified wood.

[0047] After weighing, the robotic arm 8 pours the wood in each material box into the wood output hopper 15 for centralized discharge of the wood, and completes the screening of this time.

[0048] Compared with the existing technology, this equipment is completely free of manual labor, effectively solves the problems of low manual screening efficiency and high error rate, and is controlled by a program throughout the process. There is no manual intervention during the screening process, and the data reliability is higher.

Claims

1. An intelligent wood analysis device, characterized in that: include: Screening and testing departments; The screening unit comprises: The screening drum is divided into the first section and the second section, as well as the receiving hopper. The first-stage screening drum and the second-stage screening drum are both provided with screening holes on their side walls, and the screening holes provided on the first-stage screening drum are smaller than the screening holes provided on the second-stage screening drum; The receiving hopper is arranged below the two-stage screening drum; The detection unit comprises: Feeding conveyor belt and robotic arm; The feeding conveyor belt is arranged below the receiving hopper of the second-stage screening drum; The end of the mechanical arm is provided with a clamping claw and a camera for identifying and grabbing qualified wood. The mechanical arm is arranged on the side of the feeding conveyor belt.

2. The intelligent wood analysis device according to claim 1, characterized in that: The aperture size of the screening holes on the first screening drum is d, and the aperture size of the screening holes on the second screening drum is D; Said d is the minimum length dimension of the screened wood that meets the standard; D is the maximum length dimension of the screened wood that meets the standards.

3. The intelligent wood analysis device according to claim 1, characterized in that: The end of the second-stage screening drum is a material discharging port, and a material receiving hopper is arranged below the material discharging port.

4. An intelligent wood analysis device according to claim 1 or 3, characterized in that: A waste box is arranged at the discharge port of the hopper corresponding to the discharge port of the first-stage screening drum, and a waste box is arranged at the end of the feeding conveyor belt.

5. The intelligent wood analysis device according to claim 1, characterized in that: The feeding conveyor belt is a vibrating conveyor belt, and ribs are arranged on both sides of the vibrating conveyor belt. The vibrating conveyor belt can further disperse the wood screened out from the second-stage screening drum.

6. The intelligent wood analysis device according to claim 1, characterized in that: The clamping claw at the end of the mechanical arm comprises a sponge suction cup and a flexible clamping claw, and can grasp wood of any shape.

7. The intelligent wood analysis device according to claim 1, characterized in that: A waste mechanical arm is also arranged on the side of the feeding conveyor belt, and a slide rail is arranged at the bottom of the waste mechanical arm, and the waste mechanical arm can move along the direction of the slide rail.

8. The intelligent wood analysis device according to claim 1, characterized in that: The detection part also includes a material dividing conveyor belt, and the material dividing conveyor belt is provided with a material dividing partition along the conveyor belt direction, and a material box is provided below the end of the material dividing conveyor belt according to the number of conveyor belts separated by the material dividing partition.

9. The intelligent wood analysis device according to claim 8, characterized in that: A weighing mechanism is arranged behind the material dividing conveyor belt and the waste material mechanical arm slide rail, and can weigh the waste material box and the wood in the material box.

10. The intelligent wood analysis device according to claim 9, characterized in that: A wood output hopper is arranged above the weighing mechanism, which can centrally output the wood after inspection.

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