An improved bamboo strip grading system and its use method

Abstract

An improved bamboo strip grading system and its use method are disclosed. The system comprises a feeding device, a detection device, a conveying device, a sorting and storage device, and a controller. The sorting and storage device comprises a plurality of unloading units located directly below a chain conveying assembly and arranged in sequence along its length. The tops of the plurality of unloading units form movable guide rails for supporting the forward movement of bamboo strips. The tops of each unloading unit can be opened to form guide notches for the bamboo strips to fall. A bamboo strip storage space is formed between two adjacent unloading units. The plurality of bamboo strip storage spaces constitute sorting and storage areas for bamboo strips of different grades. The sorting and storage device of this system is located directly below the conveying device. When bamboo strips are pushed onto the movable guide rails after detection, the guide notches of the corresponding unloading units are opened, allowing the bamboo strips to automatically fall from the guide notches into a bamboo strip storage space, completing unloading. This not only facilitates unloading but also reduces the floor space occupied by stacking bamboo strips of different grades.

Description

Technical Field

[0001] The present invention relates to the field of bamboo strip processing equipment, and in particular to an improved bamboo strip grading system and a method of using the same, which can automatically and efficiently complete the screening and classification (grading) of bamboo strips. Background Art

[0002] The production of bamboo products requires a series of processing steps, including splitting, screening, primary planing, and secondary planing. Splitting involves slicing the bamboo axially into strips; screening involves selecting those that meet various production standards from these strips. Existing screening processes often rely on manual visual inspection, which not only has a high error rate but also relies heavily on worker experience.

[0003] To this end, the applicant disclosed an automatic screening bamboo strip shape sorting machine in patent number: ZL2021204067881, which includes: a detection device, the detection device includes a bamboo strip inlet and a bamboo strip outlet, a transmission wheel shaft is provided between the bamboo strip inlet and the bamboo strip outlet, a shape detection mechanism is provided on the upper side between the bamboo strip inlet and the bamboo strip outlet, and the shape detection mechanism includes a thickness detection mechanism and a width detection mechanism; a conveying device, which is correspondingly arranged on one side of the bamboo strip outlet; a plurality of extraction devices, which are arranged along the transmission direction of the conveying device; a control system, including a PLC, for receiving signals from the shape detection mechanism and grading the bamboo strips, and then controlling the corresponding extraction device to select the bamboo strips to the corresponding workstation.

[0004] Although the above structure can greatly improve the screening efficiency, it also has the following problems:

[0005] 1. First of all, it requires manual feeding (i.e. loading), and the degree of automation is low, which cannot meet the continuous operation of bamboo strip grade sorting.

[0006] Second, each station on the conveyor must be equipped with a corresponding extraction device to facilitate unloading. This not only significantly increases equipment cost, but also requires the extraction device to quickly remove the bamboo strips from the conveyor during unloading. This causes the strips to fall rapidly to the sides of the conveyor during unloading. Therefore, a large unloading area must be reserved next to the conveyor during operation, resulting in a large floor space. Furthermore, the high speed of the falling strips creates a safety hazard for workers collecting the strips from the unloading area. Summary of the Invention

[0007] The present invention provides an improved bamboo strip grading system and a method for using the same, which aims to overcome the problems of low loading efficiency and a large floor space occupied by the unloading area in the prior art.

[0008] In order to achieve the purpose, the technical solution provided by the present invention is as follows:

[0009] An improved bamboo strip grading and sorting system comprises: a feeding device, which comprises a feeding frame located at the front end of a detection device, a trolley for holding bamboo strips and feeding bamboo strips to the feeding frame, and a pushing device installed on the feeding frame and transporting the bamboo strips on the trolley to the detection device one by one; a detection device for detecting the bamboo strips to obtain information on the width and thickness of the bamboo strips and feeding the parameter information back to a controller in real time; a conveying device, which comprises a conveying frame located at the rear end of the detection device and a conveying device installed on the conveying frame and pushing the bamboo strips detected by the detection device one by one horizontally to a sorting and storage device for automatic grading. A chain conveying assembly for dynamic sorting operations; a sorting and storage device, which includes a plurality of unloading units located directly below the chain conveying assembly and arranged in sequence along its length direction, the tops of the plurality of unloading units forming a movable guide rail for supporting the bamboo strips to be pushed forward, and the top of each unloading unit can be opened to form a guide notch for the bamboo strips to fall, and a bamboo strip storage space is formed between two adjacent unloading units, and the multiple bamboo strip storage spaces constitute sorting and storage areas for bamboo strips of different grades; a controller, which controls the operation of the feeding device, the conveying device and the sorting and storage device respectively according to the parameter information of the detection device.

[0010] Furthermore, the trolley is a mobile trolley, which includes a bottom frame, rollers and at least one set of limiting components for stacking multiple bamboo strips horizontally in the vertical direction to form stacked bamboo strips. The limiting components are fixed on the top surface of the bottom frame, and the rollers are installed on the bottom surface of the bottom frame; the feeding frame is equipped with a lifting component, which includes a movable support that can be lifted and lowered. The movable support is located on the outside of the bottom frame and below the stacked bamboo strips. As the movable support drives the stacked bamboo strips on the bottom frame to gradually rise, the stacked bamboo strips are transported one by one to the detection device through the pushing device.

[0011] Furthermore, the pushing device includes a suction cup assembly located directly above the stacked bamboo strips and used to absorb the topmost bamboo strips, and a pushing assembly used to transport the bamboo strips on the suction cup assembly to the detection device; the suction cup assembly includes a cross bar connected to the cross beam, a guide rod fixed to the lower end of the cross bar and extending in the left and right directions, a movable frame mounted on the guide rod so as to be movably mounted left and right, a suction cup mounted on the movable frame, and a pushing cylinder fixedly mounted at the lower end of the cross bar and whose piston rod is connected to the left end of the movable frame. Through the telescopic movement of the piston rod of the pushing cylinder, the movable frame together with the suction cup thereon will move left and right, thereby pushing the bamboo strips on the suction cup to the feed port of the detection device.

[0012] Furthermore, the pushing device includes a guide seat installed on the horizontal beam and arranged left and right, a horizontal guide rail installed on the guide seat, a vertical fixed block installed on the horizontal guide rail and movable left and right, a vertical sliding block that can slide up and down on the vertical fixed block, and a pushing head that pushes the stacked bamboo strips one by one from left to right to the feed port of the detection device, and the pushing head is fixed on the bottom of the vertical sliding block.

[0013] Furthermore, the push head includes a square push frame and a pressure bar rod. A push surface is left on the lower section of the front side wall of the square push frame. The height of the push surface is equal to or slightly less than the thickness of a bamboo strip. One end of the pressure bar rod is fixed on the front side wall of the square push frame, and the push surface is located below the pressure bar rod.

[0014] Furthermore, the chain conveyor assembly includes conveyor chains installed on the conveying frame and are symmetrical on the left and right sides, and the left and right conveyor chains are symmetrically provided with shift rods that can push the bamboo strips on the movable guide rail forward; one end of each of the shift rods is symmetrically fixed on the chain links of the left and right conveyor chains, and the other end of each shift rod forms a free end.

[0015] Furthermore, the chain conveyor assembly also includes a shift rod that cooperates with each of the shift rods one by one, each of the shift rods is close to its corresponding shift rod, and one end of each shift rod is fixed on the chain link, and the other end of each shift rod also forms a free end.

[0016] Furthermore, one end of the conveying frame is located on the discharge port side of the detection device; the conveying frame includes a frame body and a driving shaft, a driven shaft and a transmission motor that drive the driving shaft to rotate, which are installed on the frame body and arranged on the left and right. The driving shaft and the driven shaft are wound with the conveying chains that are symmetrical to each other on the left and right.

[0017] Furthermore, the sorting and storage device includes a plurality of blanking units forming two symmetrical rows of blanking units; and the tops of the two symmetrical blanking units in the two rows of blanking units can be opened simultaneously to form guide gaps for the bamboo strips to fall.

[0018] A method for using an improved bamboo strip grading and sorting system comprises the following steps: 1) bamboo strip feeding, wherein bamboo strips to be inspected are first stacked on a feed cart in the height direction, and then the bamboo strips on the feed cart are transported one by one to a testing device through a pushing device for feeding operation; 2) bamboo strip grading detection, wherein bamboo strips passing through the testing device are inspected one by one to obtain information on the width and thickness of the bamboo strips, and the parameter information is fed back to a controller in real time; 3) bamboo strip conveying, wherein the inspected bamboo strips are transported one by one to a conveying rack, and the bamboo strips are pushed one by one laterally to a sorting and storage device through a chain conveying assembly for automatic grade sorting operation; 4) bamboo strip sorting and storage, wherein the bamboo strips move forward along a movable guide rail. When the bamboo strips move to a certain unloading unit, the controller controls the top of the corresponding unloading unit to open according to the parameter information on the width and thickness of the bamboo strips obtained in advance by the testing device, and bamboo strips of the grade fall from the guide notch to the corresponding bamboo strip storage space, thereby completing the automatic sorting and storage of the bamboo strips.

[0019] The technical solution provided by the present invention offers the following advantages over existing technologies: The sorting and storage device is located directly below the conveyor. After inspection, bamboo strips are pushed along the movable guide rails, which open the guide notches of the corresponding unloading units, allowing the strips to automatically drop through the guide notches into a storage space for unloading. This not only facilitates unloading but also reduces the floor space required to stack bamboo strips of varying grades. This system enables the automatic feeding, grade inspection, conveying, and sorting and storage of bamboo strips of varying thickness, degree of defect, and other characteristics in a smooth and orderly manner. By integrating the feed cart, feed frame, and pusher, efficient automatic feeding of bamboo strips is achieved, saving labor costs and significantly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the material car in the present invention.

[0022] Figure 3 It is a structural schematic diagram of the feeding frame in the present invention.

[0023] Figure 4 This is a schematic structural diagram of a detection device assembled on a set of traction components in the present invention.

[0024] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part A.

[0025] Figure 6 It is a schematic diagram of the main structure of the present invention.

[0026] Figure 7It is a schematic block diagram of the cyclic feeding mode of the present invention.

[0027] Figure 8 This is a schematic structural diagram of another pushing device of the present invention, in which the pushing head is in a non-pushing state.

[0028] Figure 9 This is a schematic structural diagram of another pushing device of the present invention, in which the pushing head is in a pushing state.

[0029] Figure 10 This is a schematic structural diagram of another type of pushing device in the present invention, in which the pushing head is in the returned state.

[0030] Figure 11 This is a schematic diagram of a top view of another pushing device in the present invention. DETAILED DESCRIPTION

[0031] In order to further understand the content of the present invention, the present invention is described in detail with reference to the examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0032] Example 1

[0033] Refer to the attached Figure 1 、 Figure 2 and Figure 4. An improved bamboo strip grading system mainly includes a feeding device 1, a detection device 2, a conveying device 3, a sorting and storage device 4 and a controller. The feeding device 1 includes a feeding frame 11 located at the front end of the detection device 2, a trolley 12 for holding bamboo strips 5 and supplying bamboo strips to the feeding frame 11, and a pushing device 13 installed on the feeding frame 11 and transporting the bamboo strips 5 on the trolley 12 to the detection device 2 one by one; the detection device 2 is used to detect the bamboo strips 5 to obtain the width and thickness information of the bamboo strips 5, and feed back the parameter information to the controller in real time; the conveying device 3 includes a conveying frame 31 located at the rear end of the detection device 2 and a chain mounted on the conveying frame 31 and pushing the bamboo strips 5 detected by the detection device 2 one by one horizontally to the sorting and storage device 4 for automatic grading. The bamboo strip conveying assembly 32 is provided. The sorting and storage device 4 includes a plurality of unloading units 41 located directly below the chain conveying assembly 32 and arranged in sequence along its length. The tops of the unloading units 41 form a movable guide rail for supporting the bamboo strips 5 and pushing them forward. The top of each unloading unit 41 can be opened to form a guide notch 410 for the bamboo strips 5 to fall. A bamboo strip storage space 42 is formed between two adjacent unloading units 41. These multiple bamboo strip storage spaces 42 constitute a sorting and storage area for bamboo strips of different grades. The controller controls the operation of the feeding device 1, the conveying device 3, and the sorting and storage device 4 based on the parameter information of the detection device 2. Based on the position state during feeding, the feeding device 1 is located to the left of the conveying device 3 and the sorting and storage device 4.

[0034] Refer to the attached Figure 1 、 Figure 2 and Figure 3 There are two detection devices 2, spaced apart from each other. Two sets of pushers 13 are spaced apart from each other, with each set positioned directly above the stacked bamboo strips on a corresponding set of position-limiting assemblies. The two pushers 13 are arranged in a one-to-one correspondence with the two detection devices 2, and the topmost bamboo strips 5 on the stacked bamboo strips on the two position-limiting assemblies on the feed cart 12 are simultaneously delivered to the two detection devices 2.

[0035] In addition, the number of the detection devices 2 can also be one group, three groups, or other suitable numbers; and the pushing devices 13 arranged corresponding thereto can also be one group, three groups, or other suitable numbers.

[0036] Reference Figure 1 and Figure 2The material cart 12 is a mobile material cart, which includes a bottom frame 121, rollers 122 and at least one set of limiting components for stacking multiple bamboo strips 5 horizontally in the vertical direction to form stacked bamboo strips. The limiting component is fixed to the top surface of the bottom frame 121, and the rollers 122 are installed on the bottom surface of the bottom frame 121. The feeding frame 11 is equipped with a lifting component, which includes a movable support 110 that can be lifted and lowered. The movable support 110 is located on the outside of the bottom frame 121 and below the stacked bamboo strips. As the movable support 110 drives the two groups of stacked bamboo strips on the bottom frame 121 to gradually rise upward, the two groups of stacked bamboo strips are transported one by one to the detection device 2 for detection through two groups of pushing devices 13, thereby obtaining the width and thickness information of the bamboo strips 5, and the parameter information is fed back to the controller in real time.

[0037] Reference Figure 1 and Figure 2 The bottom frame 121 includes a left support rod 123, a right support rod 124 and a connecting rod 125, and the left and right ends of the connecting rod 125 are fixedly connected to the left support rod 123 and the right support rod 124; the limiting assembly includes a first limiting rod 126, a second limiting rod 127, a third limiting rod 128 and a fourth limiting rod 129 arranged in the vertical direction, and the lower ends of the first limiting rod 126 and the second limiting rod 127 are fixed to the left support rod 123 at intervals; the lower ends of the third limiting rod 128 and the fourth limiting rod 129 are fixed to the right support rod 124 at intervals; during installation, the bamboo strip 5 is mounted on the left and right support rods 123 and 124, and the left end of the bamboo strip 5 is located between the first limiting rod 126 and the second limiting rod 127, and the right end of the bamboo strip 5 is located between the third limiting rod 128 and the fourth limiting rod 129. The limiting components are provided in six groups, and are arranged in pairs. The six groups of limiting components are arranged in sequence along the length direction of the bottom frame. In this embodiment, a roller 122 is installed at the bottom of the trolley 12, which works by manual pushing. It can also be set to a circular track structure as needed, that is, a runway track 141 is installed under the trolley 12 (i.e., the mobile trolley), and a bamboo strip stacking area 142 to be tested is provided on the other side of the runway track 141, so that the trolley 12 can realize the cyclic feeding mode of loading operation, automatic forward feeding operation and empty car return and reloading operation on the runway track 141, which can greatly improve the degree of automation of the feeding device 1. For details, please refer to the attached manual. Figure 7 .

[0038] In addition, the limiting components may also be provided in one group, three groups or other suitable numbers.

[0039] Refer to the attached Figure 1 and Figure 3. The movable support 110 is a symmetrical plug rod on the left and right sides; the lifting assembly also includes a gantry 111 and screw rod assemblies on the left and right sides, the gantry 111 includes columns 112 on the left and right sides and a crossbeam 113 erected above the two columns; each screw rod assembly is respectively installed on the left and right columns 112, and the screw rod assembly includes a nut seat 114, two mutually parallel guide rails 115, a screw rod 116 and a motor assembly 117, the guide rails 115 are fixed to the corresponding columns 112 at intervals in the vertical direction, and the guide rails 115 are arranged from top to bottom in the nut seat 114, the screw rod 116 is vertically installed between the two guide rails 115, and the screw rod 116 is threadedly connected to the nut seat 114, and the output end of the motor assembly 117 is transmission connected to the screw rod 116; one end of each plug rod is respectively fixedly connected to the corresponding nut seat 114, and the other end of each plug rod forms a free end. During operation, the motor assembly 117 drives the screw rod 116 to rotate, and the screw rod 116 drives the nut seat 114 to move up and down, thereby causing the movable supports 110 (i.e., the insertion rods) on the left and right sides to move up and down.

[0040] Refer to the attached Figure 1 and Figure 3 Each set of pushing devices 13 includes a suction cup assembly located directly above the stacked bamboo strips and used to absorb the topmost bamboo strip 5, and a pushing assembly used to transport the bamboo strips on the suction cup assembly to the detection device 2; the suction cup assembly includes a crossbar 131 connected to the crossbeam 113, a guide rod 132 fixed to the lower end of the crossbar 131 and extending in the left-right direction, a movable frame 133 mounted on the guide rod 132 so as to be movable left-right, a suction cup 134 mounted on the movable frame 133, and a pushing cylinder 135 fixed to the lower end of the crossbar 131 and having its piston rod connected to the left end of the movable frame 133. Through the telescopic movement of the piston rod of the pushing cylinder 135, the movable frame 133 and the suction cup 134 thereon will move left-right together, thereby pushing the bamboo strips on the suction cup 134 to the feed port of the detection device 2. A longitudinal beam 136 is fixed horizontally and vertically on the crossbeam 113, and a base plate 137 is provided at the bottom of the longitudinal beam 136. A vertical cylinder 138 is fixed on the base plate 137, and the piston rod end of the cylinder 138 is connected to the upper end of the crossbar 131 and can drive the suction cup 134 to adjust up and down.

[0041] Refer to the attached Figure 1 、 Figure 3 and Figure 4The detection device 2 is used to pre-detect the parameter information of the bamboo strips 5 before they are conveyed to the movable guide rail 110, and to feed back the parameter information to the controller in real time. The detection method of this detection device 2 is a prior art. The applicant previously applied for a patent titled "A Bamboo Strip Shape Detection Device" (Note: Patent No.: ZL202120404498.3, Authorization Publication Date: 2021-10-22), which detailed the specific structure of the detection device 2 and the principle of its detection technology, which will not be repeated here.

[0042] Refer to the attached Figure 1 and Figure 4 The conveying device 3 also includes two groups of traction assemblies 33 located on the right side of the feeding frame 11 and arranged opposite to the two groups of pushing devices 13. Each group of traction assemblies 33 is used to pull the bamboo strips delivered by the corresponding group of pushing devices 13 to the movable guide rail after being inspected by the corresponding detection device 2. Each group of traction assemblies 33 includes a traction frame 330 and two conveying wheel groups installed on the traction frame 330 and arranged in a front-to-back interval. One detection device 2 is assembled on one traction frame 330 and is located between the two conveying wheel groups. Each conveying wheel group includes a corresponding upper and lower driving wheel 331 and a driven wheel 332. A traction channel 333 for the bamboo strips to pass through is formed between the driving wheel 331 and the driven wheel 332. During operation, the bamboo strips 5 sucked by the suction cup 134 will pass through a conveying wheel group on the left, the detection device 2, and the conveying wheel group on the right in sequence. When the bamboo strips 5 pass through the detection device 2, the collection of relevant parameter information of the bamboo strips can be completed.

[0043] Refer to the attached Figure 1 、 Figure 4 and Figure 6 The chain conveyor assembly 32 includes conveyor chains 321 and 322 installed on the conveyor frame 31 and symmetrically arranged on the left and right sides, and the left and right conveyor chains 321 and 322 are symmetrically provided with a lever 320 capable of pushing the bamboo strips 5 on the movable guide rail forward; one end of each lever 320 is symmetrically fixed to the chain links of the left and right conveyor chains 321 and 322, and the other end of each lever 320 forms a free end; the chain conveyor assembly 32 also includes a shift rod 323 that cooperates with each shift rod 320 one by one, each shift rod 323 is close to its corresponding shift rod 320, and one end of each shift rod 323 is fixed to the chain link, and the other end of each shift rod 323 also forms a free end.

[0044] Refer to the attached Figure 1 、 Figure 4 and Figure 6. One end of the conveying frame 31 is located on the side of the discharge port of the detection device 2 and is arranged opposite to the conveying wheel group on the right side; the conveying frame 31 includes a frame body 310 and a driving shaft 311, a driven shaft 312 and a transmission motor 313 installed on the frame body 310 and arranged on the left and right sides to drive the driving shaft 311 to rotate. The driving shaft 311 and the driven shaft 312 are wound with the conveying chains 321 and 322 that are symmetrical to each other on the left and right. The conveying frame 31 also includes a baffle 314, which is located on the right side of the frame body 310, and the baffle 314 is opposite to the traction channel 333 between the driving wheel 331 and the driven wheel 332. The setting of the baffle 314 can limit the right end of the bamboo strips 5 to prevent the bamboo strips 5 from falling from the right end of the conveying frame 31.

[0045] Refer to the attached Figure 1 and Figure 2 The conveyor frame 31 also includes a positioning device that can adjust the feeding angle of the bamboo strips 5. The positioning device is located between the bilaterally symmetrical movable guide rails. The positioning device includes a positioning frame 315 and a positioning cylinder 316 that drives the positioning frame 315 to rise and fall. The positioning cylinder 316 can drive the positioning frame 315 to rise and fall quickly. When the bamboo strips 5 are discharged from the traction channel between the driving wheel 331 and the driven wheel 332, the positioning cylinder 316 drives the positioning frame 315 to rise quickly. When the bamboo strips 5 are mounted on the bilaterally symmetrical movable guide rails 110, the positioning cylinder 316 drives the positioning frame 315 to fall quickly.

[0046] Refer to the attached Figure 1 and Figure 6 . The calibration frame 315 includes a base plate 317 and a first side plate 318 and a second side plate 319 fixed to the base plate 317 and forming an "eight" shape with each other. The center line between the first side plate 318 and the second side plate 319 extends along the discharge direction of the traction channel between the driving wheel 331 and the driven wheel 332. Based on the position state during feeding, the large port between the first side plate 318 and the second side plate 319 faces the movable guide rail on the left; the small port between the first side plate 318 and the second side plate 319 faces the movable guide rail on the right, and the traction channel of the traction assembly 33 faces the above-mentioned large port. After the bamboo strips 5 are discharged from the traction channel of the conveying wheel group on the right, they first pass through the movable guide rail on the left, and then pass through the calibration device (entering from the left port and exiting from the right port), and move to the movable guide rail on the right, thus completing the linear installation of the bamboo strips 5 on the movable guide rails on the left and right sides. The design of the positioning device can correct the offset angle of the bamboo strips 5 during the feeding process, prevent the bamboo strips 5 from running off, and prevent the bamboo strips 5 from being tilted (i.e. misplaced) on the movable guide rails located on the left and right sides respectively.

[0047] Refer to the attached Figure 1 and Figure 5The sorting and storage device 4 includes a plurality of blanking units 41 forming two symmetrical rows of blanking units; and the tops of the two symmetrical blanking units 41 in the two rows of blanking units can be opened simultaneously to form the guide notches 410 for the bamboo strips 5 to fall.

[0048] Refer to the attached Figure 1 、 Figure 5 and Figure 6 . Each unloading unit 41 includes a T-shaped support frame, a first cylinder 411 and a second cylinder 412. The support frame includes a front movable rod 413, a rear movable rod 414, a longitudinal support 415 and a transverse fixed rod 416. The upper end of the support 415 is fixed to the middle of the fixed rod 416; the rear end of the front movable rod 413 is rotatably connected to the front end of the fixed rod 416, one end of the first cylinder 411 is rotatably connected to the support 415, and the telescopic end of the first cylinder 411 is rotatably connected to the front end of the front movable rod 413; the front end of the rear movable rod 414 is rotatably connected to the rear end of the fixed rod 416, one end of the second cylinder 412 is rotatably connected to the support 415, and the telescopic end of the second cylinder 412 is rotatably connected to the rear end of the rear movable rod 414. The front movable rods 413, fixed rods 416, and rear movable rods 414 of adjacent support frames are interconnected to form the movable guide rail 110. Each front movable rod 413 and rear movable rod 414 can be opened to form the guide notch 410 for the bamboo strips 5 to fall. Each first cylinder 411 and second cylinder 412 form the power assembly of the sorting and storage device. A bamboo strip storage space 42 is formed between two adjacent pillars 415. These multiple bamboo strip storage spaces 42 constitute the sorting and storage area for bamboo strips of different grades.

[0049] Refer to the attached Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 . A method for using an improved bamboo strip grading system, which includes the following steps: 1) bamboo strip feeding, first stacking the bamboo strips 5 to be tested on the feed cart 12 in the height direction, and then transporting the bamboo strips 5 on the feed cart 12 one by one to the detection device 2 for feeding operation. Specifically, first, the bamboo strips 5 to be tested are stacked on the feed cart 12 in the height direction; then, the feed cart 2 is pushed into the feeding frame 11, and the movable support 110 is located outside the bottom frame 121 and below the stacked bamboo strips; finally, the lifting component is started, so that the stacked bamboo strips on the bottom frame 121 are gradually lifted upwards as the movable support 110 drives them, and the stacked bamboo strips are transported one by one to the detection device 2 for feeding operation through the pushing device 13.

[0050] 2) Bamboo strip grade detection, the bamboo strips 5 passing through the detection device 2 are detected one by one to obtain the width and thickness information of the bamboo strips 5, and the parameter information is fed back to the controller in real time. Specifically, before the bamboo strips 5 are conveyed to the movable guide rail 110, the bamboo strips 5 are detected by the detection device 2 to obtain the parameter information of the width and thickness of the bamboo strips 5, and the collected parameter information is fed back to the controller in real time, thereby completing the grade judgment of the bamboo strips 5. The detection method of the detection device 2 is a prior art. The applicant previously applied for a patent title: A bamboo strip shape detection device (Note: Patent No.: ZL202120404498.3, Authorization Publication Date: 2021-10-22), which disclosed in detail the specific structure of the detection device 2 and the principle of its detection technology, which will not be repeated here.

[0051] 3) Bamboo strip conveying: The inspected bamboo strips 5 are conveyed one by one onto the conveyor rack 31. The chain conveyor assembly 32 then pushes the bamboo strips 5 laterally to the sorting and storage device 4 for automatic grading. Specifically, the bamboo strips 5 are first pulled from the inspection device 2 by the traction assembly 33 and conveyed to the movable guide rail 110. The bamboo strips are then restrained by the corresponding shifting levers 320 and shifting levers 323 on the chain conveyor assembly 32. The left and right conveyor chains 321 and 322 of the chain conveyor assembly 32 then rotate, driving the bamboo strips 5 laterally forward one by one to the sorting and storage device 4 for automatic grading.

[0052] 4) Sorting and storage of bamboo strips: Driven by the lever 320, the bamboo strips 5 move forward along the movable guide rail 110. When they move to a certain unloading unit 41, the controller controls the top of the corresponding unloading unit 41 to open based on the parameter information of the width and thickness of the bamboo strips 5 obtained in advance by the detection device 2. The bamboo strips 5 of that level fall from the guide notch 410 to the corresponding bamboo strip storage space 42, thereby completing the automatic sorting and storage of the bamboo strips.

[0053] It's worth noting that, to improve efficiency, this embodiment features two sets of pushers 13, two detection devices 2, and two sets of traction assemblies 33. During operation, the movable supports 110 simultaneously lift two rows of stacked bamboo strips. The strips are then graded and transported to the movable guide rails 110 for automatic sorting and storage. Furthermore, the pushers 13, detection devices 2, and traction assemblies 33 can also be one, three, or any other suitable number.

[0054] Example 2

[0055] Refer to the attached Figure 8 、 Figure 9 and Figure 10The implementation of this embodiment is basically the same as that of the first embodiment, except that the pushing device 13 has a different structure. The pushing device 13 includes a guide seat 15 mounted on the crossbeam 33 and arranged in a left-right manner, a horizontal guide rail 16 mounted on the guide seat 15, a vertical fixed block 17 mounted on the horizontal guide rail 16 and movable left-right, a vertical sliding block 18 that can slide up and down on the vertical fixed block 17, and a pushing head 19 that pushes the stacked bamboo strips one by one from left to right to the feed port of the detection device 2. The pushing head 19 is fixed to the bottom of the vertical sliding block 18.

[0056] Refer to the attached Figure 8 、 Figure 9 and Figure 10 The push head 19 includes a square push frame 191 and a pressure bar rod 192. A push surface 193 is left on the lower section of the front side wall of the square push frame 191. The height of the push surface 193 is equal to or slightly less than the thickness of a bamboo strip 5. One end of the pressure bar rod 192 is fixed to the front side wall of the square push frame 191, and the push surface 193 is located below the pressure bar rod 192. The bottom of the push head 19 is equipped with a movable roller 190 that rolls on the bamboo strips 5 (i.e., a layer of bamboo strips to be pushed); the bottom of the bottom edge of the square push frame 191 is provided with a strip groove. The number of the movable rollers 190 is two, arranged in front and back, and the two movable rollers 190 are movably assembled in the strip groove in sequence along the length direction of the bottom edge of the square push frame 191. The design of the movable roller 190 allows each time a bamboo strip 5 is pushed, the movable roller 190 rolls on the upper surface of the next bamboo strip. This reduces the friction between the bottom edge of the square push frame 191 and the upper surface of the next bamboo strip 5, converting the original sliding friction into rolling friction, greatly improving the efficiency of the push head 19 in pushing each bamboo strip 5. The movable roller 190 also provides auxiliary pressure on the upper surface of the next bamboo strip 5, preventing the next bamboo strip 5 from tilting due to uneven force during the process. The pressure rod 192 is an arc-shaped rod with its other end bent upward. The push head 19 is connected to the vertical sliding block 18 via a connecting seat 194. The push head 19 is located at the bottom left side of the connecting seat 194, while the vertical sliding block 18 is located at the top right side of the connecting seat 194.

[0057] Refer to the attached Figure 3 、 Figure 8 、 Figure 10 and Figure 11. The longitudinal beam 38 is fixed horizontally and vertically on the crossbeam 33. The pushing device 13 also includes a back plate 151 connected to the bottom of the longitudinal beam 38, a horizontal cylinder 152 and the guide seat 15 fixed on the back plate 151. The guide seat 15 is a U-shaped structure, and the horizontal guide rail 16 is installed in the guide seat 15; the back of the vertical fixed block 17 is provided with a horizontal slider 171, which is sleeved on the horizontal guide rail 16. The horizontal cylinder 152 is fixed to one side of the guide seat 15, and the top of its piston rod is connected to the horizontal slider 171. The vertical fixed block 17 is moved left and right by the piston rod 153 of the horizontal cylinder 152 pulling the horizontal slider 171 to telescope on the horizontal guide rail 16. The pushing device 13 is also provided with two groups arranged in a front-to-back manner, and each group of pushing devices 13 is correspondingly located directly above the stacked bamboo strips on a set of limit assemblies. When in use, the vertical sliding block 18 moves down one position, so that the pushing surface 193 of the pushing head 19 is on the rear end surface of the bamboo strip 5 on the top layer of the stacked bamboo strips, and then the horizontal cylinder 152 is started again, so that the vertical sliding block 18 drives the pushing head 19 to push a bamboo strip 5 forward to push it onto the detection device 2 for detection operation. When the bamboo strip 5 is pushed, the vertical sliding block 18 rises and returns to its position, and then the horizontal cylinder 152 pushes the horizontal sliding block 17 to the right, so that the vertical sliding block 18 is behind the next bamboo strip 5. After the movable support 110 drives the stacked bamboo strips to rise one position, the vertical sliding block 18 is lowered one position again, so that the pushing surface 193 of the pushing head 19 is on the rear end surface of the bamboo strip 5 on the top layer of the stacked bamboo strips (i.e., the next bamboo strip), and then the horizontal cylinder 152 is started again to complete the pushing operation of the next bamboo strip, and so on, thereby completing the pushing operation of the entire stacked bamboo strips one by one.

[0058] The present invention has been described in detail above with reference to the embodiments. However, the contents described are only preferred embodiments of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An improved bamboo strip grading system, characterized in that: It includes: A feeding device, which includes a feeding frame located at the front end of the detection device, a trolley for holding bamboo strips and feeding bamboo strips to the feeding frame, and a pushing device installed on the feeding frame and transporting the bamboo strips on the trolley to the detection device one by one; a detection device, which is used to detect the bamboo strips to obtain the width and thickness information of the bamboo strips, and feed back the parameter information to the controller in real time; a conveying device, which includes a conveying frame located at the rear end of the detection device and a chain conveying assembly installed on the conveying frame and pushing the bamboo strips detected by the detection device one by one horizontally to the sorting and storage device for automatic grade sorting; a sorting and storage device, which includes a plurality of unloading units located directly below the chain conveying assembly and arranged in sequence along its length direction The tops of the plurality of unloading units form a movable guide rail for supporting the bamboo strips to be pushed forward, and the top of each unloading unit can be opened to form a guide notch for the bamboo strips to fall, and a bamboo strip storage space is formed between two adjacent unloading units, and multiple bamboo strip storage spaces constitute a sorting and storage area for bamboo strips of different grades; the controller controls the feeding device, the conveying device and the sorting and storage device to work respectively according to the parameter information of the detection device; each unloading unit includes a T-shaped support frame, a first cylinder and a second cylinder, and the support frame includes a front movable rod, a rear movable rod, a longitudinal support and a transverse fixed rod, and the upper end of the support is fixed to the middle part of the fixed rod; the rear end of the front movable rod is rotatably connected to the front end of the fixed rod, and one end of the first cylinder is rotatable The lifting mechanism is a kind of lifting mechanism that lifts up and down of upper handlebars and lower handlebars, and the lifting mechanism is a kind of lifting mechanism that lifts up and down of lower handlebars, and the lifting mechanism of lifting mechanism is a kind of lifting mechanism that lifts up and down of lower handlebars. The stacked bamboo strips on the bottom frame are gradually lifted upward and transported one by one to the detection device through a pushing device; the pushing device includes a guide seat installed on the crossbeam and arranged in a left-right manner, a horizontal guide rail installed on the guide seat, a vertical fixed block installed on the horizontal guide rail and movable left-right, a vertical sliding block that can slide up and down on the vertical fixed block, and a pushing head that pushes the stacked bamboo strips from left to right one by one to the feeding port of the detection device, the pushing head being fixed to the bottom of the vertical sliding block; the pushing head includes a square pushing frame and a pressure strip rod, a pushing surface is left on the lower section of the front side wall of the square pushing frame, the height of the pushing surface is equal to or slightly less than the thickness of a bamboo strip, one end of the pressure strip rod is fixed on the front side wall of the square pushing frame, and the pushing surface is located below the pressure strip rod;The sorting and storage device includes a plurality of unloading units forming two rows of unloading units that are symmetrical on the left and right; and the tops of the two symmetrical unloading units in the two rows of unloading units can be opened at the same time to form a guide notch for the bamboo strips to fall; the conveying frame also includes a positioning device that can adjust the feeding angle of the bamboo strips, and the positioning device is located between the movable guide rails that are symmetrical on the left and right. The positioning device includes a positioning frame and a positioning cylinder that drives the positioning frame to rise and fall, and the positioning frame includes a bottom plate and a first side plate and a second side plate that are fixed to the bottom plate and are in an "eight" shape with each other, and the center line between the first side plate and the second side plate extends along the discharge direction of the traction channel between the driving wheel and the driven wheel; based on the position state during feeding, the first side plate and the second side plate are aligned with the position of the feeder. The large port between the first and second side plates faces the movable guide rail on the left; the small port between the first and second side plates faces the movable guide rail on the right, and the traction channel of the traction assembly faces the large port. The chain conveyor assembly includes left and right symmetrical conveyor chains installed on the conveyor frame, and the left and right conveyor chains are symmetrically provided with shifting rods capable of pushing the bamboo strips on the movable guide rail forward; one end of each shifting rod is symmetrically fixed to the chain links of the left and right conveyor chains, and the other end of each shifting rod is a free end. The chain conveyor assembly also includes a shifting rod that cooperates with each shifting rod, each shifting rod is close to its corresponding shifting rod, and one end of each shifting rod is fixed to the chain link, and the other end of each shifting rod is also a free end.

2. The improved bamboo strip grading system according to claim 1, characterized in that: One end of the conveying frame is located on the discharge port side of the detection device; the conveying frame includes a frame body and a driving shaft, a driven shaft and a transmission motor that drives the driving shaft to rotate, which are installed on the frame body and arranged on the left and right. The driving shaft and the driven shaft are wound with the conveying chains that are symmetrical to each other on the left and right.

3. A method for using the improved bamboo strip grading system according to any one of claims 1-2, characterized in that: The method comprises the following steps: 1) feeding bamboo strips, firstly stacking the bamboo strips to be tested on a feed cart in the height direction, and then using a pushing device to transport the bamboo strips on the feed cart one by one to the testing device for feeding operation; 2) Bamboo strip grade detection: The bamboo strips passing through the detection device are inspected one by one to obtain the width and thickness information of the bamboo strips, and the parameter information is fed back to the controller in real time; 3) Bamboo strip transportation: The inspected bamboo strips are transported one by one to the conveyor rack, and the bamboo strips are pushed horizontally one by one to the sorting and storage device through the chain conveyor assembly for automatic grade sorting; 4) Bamboo strip sorting and storage: The bamboo strips move forward along the movable guide rail. When they move to a certain unloading unit, the controller controls the top of the corresponding unloading unit to open according to the parameter information of the width and thickness of the bamboo strips in advance by the detection device, and the bamboo strips of this grade fall from the guide gap to the corresponding bamboo strip storage space, thereby completing the automatic sorting and storage of the bamboo strips.

Images