Optimal sawing timber detection device
By adopting a combined structure of a long measuring wheel and an auxiliary press roller in the preferred saw machine, combined with a sensor and a motor-driven carriage screw pair, the accuracy and automatic control problems of the detection device are solved, and high-precision wood detection and automatic adjustment are achieved, and the sawing efficiency is improved.
Patent Information
- Application Number
- CN202422159964.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The detection devices of existing preferred saw machines have large errors in length measurement accuracy and positioning accuracy, which cannot meet the intelligent adjustment and control needs of automatic production lines, affecting sawing efficiency and production efficiency.
The combined structure of the long-measuring wheel and auxiliary pressure roller is adopted. Through the design of the long-measuring wheel cylinder and sliding bracket, combined with universal coupling and angle sensor, the long-measuring wheel and wood are realized in a tight fit and synchronous operation. The carriage motor drives the lead screw pair to adjust the height of the long-measuring wheel, and is equipped with position and quality sensors to ensure high-precision detection.
It improves the length measurement accuracy and position accuracy, realizes automatic control, and improves the sawing efficiency and the operational reliability of the production line.
Smart Images
Figure CN223154212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to wood processing technical equipment, in particular to a detection device of a preferred cut-off saw machine which can accurately detect wood. Background Art
[0002] The optimal sawing machine can identify defects such as knots and cracks on the wood, and classify the wood's texture, color and other characteristics; and achieve the maximum sawing yield and higher production efficiency by reasonably optimizing the batching plan.
[0003] With the continuous improvement of the cutting speed, processing accuracy and intelligent control requirements of the optimal sawing machine, higher requirements are put forward for the detection accuracy and operation reliability of its detection device. At present, the conveying and scanning detection device of the wood to be sawn includes a feeding conveyor flat belt and a length measuring wheel connected to an encoder. The wood to be sawn relies on the friction between the conveyor flat belt to achieve dragging feeding. The wood to be sawn is in an unconstrained free state, which will increase the errors in length measurement accuracy and positioning accuracy, as well as inaccurate defect scanning, which greatly limits the further improvement of feeding speed and sawing efficiency; the length measuring wheel connected to the encoder measures the length by pressing on the wood according to its gravity. Since the surface of the wood to be sawn is not completely flat, the length measuring wheel will jump during the length measurement process and instantly detach from the surface of the object to be measured, resulting in a deviation in the length measurement data. Especially when the feeding speed is increased, the length measuring wheel will also jump in the opposite direction, causing the length data to change in the negative direction, increasing the deviation of the length measurement data. At present, the height adjustment of the feed pressure wheel and the measuring wheel relies on manual adjustment. This manual adjustment is not only inefficient and has poor accuracy, but also cannot meet the needs of intelligent adjustment and control of the automatic production line, which limits the operating efficiency of the entire production line. Utility Model Content
[0004] In view of the above technical problems existing in the prior art, the technical problem to be solved by the utility model is to provide an optimal sawn timber detection device which has high detection accuracy and is convenient for realizing automatic adjustment and control.
[0005] In order to solve the above technical problems, the preferred sawn wood detection device of the utility model includes a frame, and a conveyor belt tensioned on the frame, a measuring wheel movably arranged above the conveyor belt, the measuring wheel is rotatably supported on one end of the measuring wheel swing arm, the other end of the measuring wheel swing arm is hinged on the sliding bracket, and a measuring wheel cylinder is also hinged on the measuring wheel swing arm; the sliding bracket is also supported by an auxiliary pressure roller through an auxiliary roller supporter, and the auxiliary roller supporter is a tensioning buffer device; the measuring wheel is connected to a length measuring encoder through a coupling, and the coupling is a universal coupling; the sliding bracket is slidably supported on the frame through a sliding guide rod, and a slide motor installed on the frame drives the sliding bracket through a slide screw pair, and an angle sensor is installed on the upper end of the screw of the slide screw pair.
[0006] Preferably, the length measuring wheel is movably sleeved on the one-way clutch mandrel. A clutch roller is movably arranged in a mandrel wedge-shaped cavity formed by the length measuring wheel and the one-way clutch mandrel. The one-way clutch mandrel is supported on the length measuring wheel swing arm.
[0007] Preferably, at least two clutch rollers are arranged in the mandrel wedge-shaped cavity, and the diameters of the clutch rollers are not equal.
[0008] Preferably, four mandrel wedge-shaped cavities are formed between the length measuring wheel and the one-way clutch mandrel.
[0009] Preferably, the cylinder block of the length measuring wheel cylinder is hinged to the sliding bracket, and the piston rod of the length measuring wheel cylinder is hinged to the length measuring wheel swing arm.
[0010] Preferably, the angle sensor includes a proximity sensor and a toothed indexing disk arranged adjacent to each other.
[0011] Preferably, one end of the coupling is connected to the length measuring wheel through a coupling seat, and the other end of the coupling is connected to the length measuring encoder, and the length measuring encoder is an optical, magnetic or electrical encoder.
[0012] Preferably, two length measuring wheels are swingably supported on the sliding bracket, and a position sensor and a quality sensor are further installed on the sliding bracket, and the position sensor and the quality sensor are located between the two length measuring wheels.
[0013] In the above structure, since the length measuring wheel swing arm that rotatably supports the length measuring wheel is hinged with a length measuring wheel cylinder, the length measuring wheel cylinder applies pressure to the length measuring wheel through the length measuring wheel swing arm, so that the length measuring wheel can closely adhere to the wood to be sawn on the conveyor belt, which can not only generate sufficient friction between the wood to be sawn and the conveyor belt to ensure the synchronous operation of the wood to be sawn and the conveyor belt, but also make the length measuring wheel closely adhere to the wood to ensure the measurement accuracy. Also, since the sliding bracket on which the length measuring wheel is installed is slidably supported on the detection bracket through a guide rod, the sliding motor drives the sliding bracket through a lead screw pair, and an angle sensor is installed at the upper end of the lead screw of the lead screw pair of the carriage, so that not only can the height of the length measuring wheel be effectively adjusted and controlled, but also the adjustment accuracy of the height position of the length measuring wheel can be improved, which is beneficial to realizing the automatic control of wood detection. Additionally, since the auxiliary pressure roller is supported on the sliding bracket through an auxiliary roller support, and a tensioning and buffering device is used as the auxiliary roller support, the auxiliary pressure roller can press the wood against the conveyor belt with a certain pressure to ensure the synchronous operation of the wood and the conveyor belt, avoid slipping phenomena such as the wood leading or lagging on the conveying surface, and ensure high length measurement accuracy and position accuracy. Even when the conveyor belt is running at high speed, it can still maintain high-speed and high-precision detection of the position and quality of the wood. Description of the Drawings
[0014] The following further elaborates on the preferred sawed lumber detection device of the utility model in conjunction with the attached drawings and specific embodiments.
[0015] Figure 1 It is a front structural schematic diagram of a specific embodiment of the preferred sawed lumber detection device of the present utility model;
[0016] Figure 2 It is Figure 1 a forward three-dimensional structure diagram of the structure shown (with the fixed frame removed);
[0017] Figure 3 It is Figure 1 a backward three-dimensional structure diagram of the structure shown (with the fixed frame removed);
[0018] Figure 4 It is Figure 2 the drive structure diagram of the carriage motor in
[0019] Figure 5 It is Figure 2 the installation structure diagram of the length measuring wheel in
[0020] Figure 6 It is Figure 5 the cross-sectional structure diagram of the length measuring wheel of
[0021] Figure 7 It is Figure 6 the A - A sectional view of
[0022] Figure 8 It is Figure 2 the installation structure diagram of the auxiliary pressure roller in
[0023] In the figure, 1 - frame, 2 - auxiliary pressure roller, 3 - auxiliary roller support, 4 - sliding bracket, 5 - carriage motor, 6 - lead screw reducer, 7 - angle sensor, 8 - carriage lead screw pair, 9 - carriage guide rod, 10 - length measuring wheel cylinder, 11 - swing arm seat, 12 - length measuring wheel swing arm, 13 - length measuring wheel, 14 - position sensor, 15 - quality sensor, 16 - coupling seat, 17 - coupling, 18 - length measuring encoder, 19 - one-way clutch core shaft, 20 - clutch roller, 21 - core shaft wedge cavity, 22 - conveyor belt. Specific embodiments
[0024] As Figure 1 , Figure 2 and Figure 3The preferred saw timber detection device shown includes a frame 1. Conveyor belt wheels are provided at both the front and rear ends of the frame 1, and a conveyor belt 22 is tensioned between the two conveyor belt wheels. A length measuring wheel 13 and an auxiliary pressure roller 2 are movably arranged above the belt surface of the conveyor belt 22. Two mutually parallel carriage guide rods 9 are fixed on the frame 1, and a sliding bracket 4 is slidably supported on the frame 1 through the two carriage guide rods 9 so as to be slidable up and down. A carriage motor 5 is also fixedly installed at the top of the frame 1. The carriage motor 5 drives the lead screw of a carriage lead screw pair 8 through a lead screw reducer 6, and the nut of the carriage lead screw pair 8 is installed on the sliding bracket 4. When the carriage motor 5 rotates forward or backward, the carriage motor 5 drives the sliding bracket 4 to move up and down along the carriage guide rods 9 through the carriage lead screw pair 8, thereby changing the heights of the length measuring wheel 13 and the auxiliary pressure roller 2 to meet the detection requirements of saw timbers with different thicknesses. The carriage motor 5 is a servo motor.
[0025] The lead screw of the carriage lead screw pair 8 extends out of the upper cover surface of the lead screw reducer 6 and is fixedly connected to the toothed indexing disk of an angle sensor 7. As Figure 4 shown, the angle sensor 7 includes a toothed indexing disk and a commonly used proximity switch installed adjacent to each other. The proximity switch is fixedly installed on the lead screw reducer, and six induction teeth are evenly distributed on the disk surface of the toothed indexing disk. According to the detection accuracy, more than six induction teeth can also be designed on its disk surface; the proximity switch can be an inductive, capacitive or Hall type proximity switch, etc.; the toothed indexing disk rotates synchronously with the lead screw of the carriage lead screw 8.
[0026] Two length measuring wheels 13 and an auxiliary pressure roller 2 are hinged and supported on the sliding bracket 4 at a distance. A corresponding coupling seat 16 is fixedly installed on the back of each length measuring wheel 13. A coupling 17 is connected to the coupling seat 16, and the other end of the coupling 17 is connected to a length measuring encoder 18. The length measuring encoder 18 is installed on the sliding bracket 4. The coupling 17 is a universal coupling, and the length measuring encoder 18 is an optical, magnetic or electrical encoder.
[0027] A position sensor 14 and a quality sensor 15 are also installed on the sliding bracket 4. The position sensor 14 and the quality sensor 15 are located between the two length measuring wheels 13. The position sensor 14 is a proximity sensor, and the quality sensor 15 is an optoelectronic scanning head.
[0028] As Figure 5 、 Figure 6 and Figure 7As shown, the length measuring wheel 13 is supported at one end of the length measuring wheel swing arm 12 through a rotational support structure. A coupling seat 16 is fixedly installed on one end face of the length measuring wheel 13. A core shaft installation blind hole is provided on the other end face of the length measuring wheel 13. A one-way centrifugal core shaft 19 is movably arranged in the core shaft installation blind hole, that is, the length measuring wheel 13 is sleeved on the one-way clutch core shaft 19. Four grooves are evenly distributed on the one-way clutch core shaft 19, and four core shaft wedge-shaped cavities 21 are formed between the inner wall surface of the blind hole on the length measuring wheel 13. Three clutch rollers 20 are movably arranged in each core shaft wedge-shaped cavity 21. The diameters of the respective clutch rollers 20 gradually decrease. This is beneficial for improving the concentricity between the core shaft and the length measuring wheel and enhancing the wedging ability. The above structure constitutes the rotational support structure of the length measuring wheel 13. The one-way clutch core shaft 19 is fixedly installed at the extending end of the length measuring wheel swing arm 12. The other end of the length measuring wheel swing arm 12 is hinged to the swing arm seat 11, and the swing arm seat 11 is installed on the sliding support 4. A length measuring wheel cylinder 10 is also hinged to the length measuring wheel swing arm 12. The piston rod of the length measuring wheel cylinder 10 is hinged to the length measuring wheel swing arm 12, and the cylinder body of the length measuring wheel cylinder 10 is hinged to the swing arm seat 11.
[0029] As Figure 8 shown, the auxiliary pressure roller 2 is rotatably installed on the auxiliary roller support 3, and the auxiliary roller support 3 is installed on the sliding support 4. The auxiliary roller support 3 is a tensioning and buffering device.
[0030] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. According to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.
Claims
1. A preferred sawed wood detection device, comprising a frame (1) and a conveyor belt (22) tensioned on the frame (1), wherein a length measuring wheel (13) is movably arranged above the conveyor belt (22), and is characterized in that: The length measuring wheel (13) is rotatably supported at one end of the length measuring wheel swing arm (12), and the other end of the length measuring wheel swing arm (12) is hinged to the sliding bracket (4). A length measuring wheel cylinder (10) is also hinged to the length measuring wheel swing arm (12); an auxiliary pressure roller (2) is supported on the sliding bracket (4) through an auxiliary roller support (3), and the auxiliary roller support (3) is a tensioning and buffering device; the length measuring wheel (13) is connected to a length measuring encoder (18) through a coupling (17), and the coupling (17) is a universal coupling; the sliding bracket (4) is slidably supported on the frame (1) through a sliding guide rod (9), and a carriage motor (5) installed on the frame (1) drives the sliding bracket (4) through a carriage lead screw pair (8), and an angle sensor (7) is installed at the upper end of the lead screw of the carriage lead screw pair (8).
2. The preferred saw timber detection device according to claim 1, characterized in that: The length measuring wheel (13) is movably sleeved on a one-way clutch mandrel (19), and a clutch roller (20) is movably arranged in a mandrel wedge cavity (21) formed between the length measuring wheel (13) and the one-way clutch mandrel (19), and the one-way clutch mandrel (19) is supported on the length measuring wheel swing arm (12).
3. The preferred sawed wood detection device according to claim 2, wherein: At least two clutch rollers (20) are arranged in the mandrel wedge cavity (21), and the diameters of the clutch rollers (20) are not equal.
4. The preferred saw timber detection device according to claim 1, 2 or 3, characterized in that: Four mandrel wedge cavities (21) are formed between the length measuring wheel (13) and the one-way clutch mandrel (19).
5. The preferred saw timber detection device according to claim 1, characterized in that: The cylinder block of the length measuring wheel cylinder (10) is hinged to the sliding bracket (4), and the piston rod of the length measuring wheel cylinder (10) is hinged to the length measuring wheel swing arm (12).
6. The preferred saw timber detection device according to claim 1, characterized in that: The angle sensor (7) includes a proximity sensor and a toothed indexing disk arranged adjacent to each other.
7. The preferred saw timber detection device according to claim 1, characterized in that: One end of the coupling (17) is connected to the length measuring wheel (13) through a coupling seat (16), and the other end of the coupling (17) is connected to the length measuring encoder (18), and the length measuring encoder (18) is an optical, magnetic or electrical encoder.
8. The preferred saw timber detection device according to claim 1, wherein: Two length measuring wheels (13) are swingably supported on the sliding bracket (4), and a position sensor (14) and a quality sensor (15) are also installed on the sliding bracket (4), and the position sensor (14) and the quality sensor (15) are located between the two length measuring wheels (13).