A color difference detector for color pencil lead production

Abstract

The present application belongs to the technical field of pencil core production, in particular to a color difference detector for color pencil core production, which comprises a support I and a rack, a visual detection device is arranged on the support I, a conveying belt for conveying pencil cores is arranged on the rack, an image acquisition unit of the visual detection device is aligned above the conveying belt, the image acquisition unit acquires the surface image of the pencil cores conveyed by the conveying belt, and uploads the image to an image processing unit of the visual detection device for color difference analysis, and the pencil core feeding assembly is adjustable. The adjustable pencil core feeding assembly is used to avoid the accumulation of pencil cores on the conveying belt during batch conveying, so that the image acquisition unit of the visual detection device can only acquire the image of the upper layer of pencil cores, and the situation of missed detection occurs.

Description

Technical Field

[0001] This invention belongs to the field of pencil lead production technology, specifically a color difference detector for colored pencil lead production. Background Technology

[0002] Colored pencils are drawing and writing tools made of pigments, clay, wax, or resin and wood. During the production process, the color of colored pencil leads is prone to variations within or between batches due to the uneven dispersion of the pigments and the extrusion temperature. To prevent substandard leads from entering subsequent assembly processes, the color of the leads needs to be inspected.

[0003] In existing technology, when performing color difference detection on colored pencil leads, multiple leads are placed on a conveyor belt, and a visual inspection device is set up around the conveyor belt. The conveyor belt drives the leads to move to the visual inspection device for detection.

[0004] However, when conveying pen refills in batches, the refills tend to pile up on the conveyor belt. This causes the image acquisition unit of the vision inspection device to only capture the image of the top layer of refills, resulting in missed detections. Furthermore, if personnel arrange multiple pen refills sequentially on the conveyor belt to avoid this situation, it leads to high labor intensity and fatigue, which slows down the arranging speed and affects continuous inspection efficiency. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a color difference detector for the production of colored pencil leads.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a color difference detector for the production of colored pencil leads, including a support and a frame. The support is equipped with a vision inspection device, and the frame is equipped with a conveyor belt for conveying pencil leads. The image acquisition unit of the vision inspection device is aligned with the top of the conveyor belt. The image acquisition unit acquires an image of the surface of the pencil lead conveyed by the conveyor belt and uploads the image to the image processing unit of the vision inspection device for color difference analysis. The device includes an adjustable pencil lead feeding assembly. The adjustable pen refill feeding assembly includes a fixed plate and a feeding shell. Both the fixed plate and the feeding shell are fixedly connected to the bracket. Two material frames are symmetrically and slidably arranged on one side of the fixed plate. The two material frames cooperate to form a hopper-shaped structure that is wider at the top and narrower at the bottom. Baffle 1 and Baffle 2 are slidably arranged on the inner side of the two material frames, and Baffle 1 and Baffle 2 are slidably inserted into each other. A rotating rod is rotatably arranged in the middle of one side of the inner cavity of the feeding shell. A rotating ring is fixedly connected to one end of the rotating rod. A drop groove is opened in the middle of the upper and lower sides of the feeding shell. Multiple receiving grooves are evenly opened along the circumference of the rotating ring. A V-shaped pad is fixedly connected to the inner side of the receiving groove. The pen refill falls out through the bottom outlet of the hopper-shaped structure formed by the two material frames, passes through the drop groove and the receiving groove in sequence, and falls onto the V-shaped pad. The V-shaped pad is driven to rotate to a position aligned with the lower drop groove, and the pen refill falls from the V-shaped pad onto the conveyor belt.

[0007] Preferably, the frame is provided with a pen refill removal component; The pen refill removal assembly includes a cylinder five fixedly connected to one side of the frame. A pusher block is fixedly connected to the piston end of the cylinder five. Multiple placement slots for placing pen refills are opened on the conveyor belt. A feeding plate is fixedly connected to one side of the upper end of the frame. The cylinder five drives the pusher block to move laterally, pushing the pen refills located on the placement slots to the feeding plate. The pen refills fall into the collection container along the feeding plate.

[0008] Preferably, the fixing plate is provided with a hopper-shaped structure size adjustment component; The hopper-shaped structure size adjustment component includes two cylinders, which are symmetrically fixedly connected to both sides of the fixed plate. The piston ends of the two cylinders are respectively fixedly connected to the side walls of the two material frames. A cylinder is fixedly connected to one end of one material frame, and the piston end of the cylinder is fixedly connected to one end of the baffle.

[0009] Preferably, a motor is fixedly connected to the middle of one side of the outer wall of the feeding shell, and the output end of the motor is fixedly connected to one end of the rotating rod.

[0010] Preferably, the rotating rod is provided with a tensioning component for adjusting the size of the V-shaped pad; The tensioning assembly includes a turntable fixedly connected to one end of a rotating rod. Multiple limiting blocks are evenly distributed and fixedly connected to one side end face of the turntable. A radial rod is slidably connected to the inner side of the limiting block. The end of the radial rod away from the axis of the turntable is fixedly connected to a V-shaped pad, which is made of elastic material.

[0011] Preferably, a sloping groove plate is rotatably provided in the middle of one side end face of the turntable, and multiple sloping grooves are opened along the circumferential direction on the sloping groove plate. One end of the radial rod is fixedly connected to a guide post, and each guide post slides through a sloping groove. A second motor is fixedly connected in the middle of one side end face of the turntable, and the output end of the second motor is fixedly connected to one end of the sloping groove plate.

[0012] Preferably, the fixing plate is provided with an anti-jamming component; The anti-jamming component includes a groove on one side of the bottom of the material frame, and a lifting rod is slidably inserted through the groove.

[0013] Preferably, a guide rod is fixedly connected to one side of the fixed plate, a transverse plate is slidably arranged on the guide rod, and two sliders are symmetrically slidably arranged on the lower surface of the transverse plate. A cylinder is fixedly connected to the lower end of the slider, and the piston ends of the two cylinders are respectively fixedly connected to one end of two lifting rods.

[0014] Preferably, a cylinder three is fixedly connected to one side of the material frame, and the piston end of the cylinder three is fixedly connected to one end of the transverse plate.

[0015] The beneficial effects of this invention are as follows: 1. The color difference detector for colored pencil lead production described in this invention utilizes an adjustable lead feeding assembly. During the entire inspection process, personnel only need to place multiple leads to be inspected into the feeding channel in a uniform orientation. With the coordinated operation of multiple structures, the leads are sequentially separated and placed in their respective slots. A conveyor belt then moves the leads to a vision inspection device for color difference detection. A lead rejection assembly removes leads with color differences, thus avoiding the problem of leads accumulating on the conveyor belt during batch transport, which would prevent the vision inspection device's image acquisition unit from only capturing images of the uppermost leads and resulting in missed detections. Furthermore, it eliminates the need for manual arrangement of multiple leads on the conveyor belt, reducing labor intensity and improving continuous inspection efficiency.

[0016] 2. The color difference detector for colored pencil lead production described in this invention utilizes an anti-jamming component. As the pencil lead slides down the feeding channel, two cylinders alternately drive the lifting rods to rise and fall. When one lifting rod rises and extends from the groove, its end pushes up and jams against the middle of the pencil lead at the channel opening, disrupting the end-to-end contact between that pencil lead and the adjacent pencil lead, forcing the other pencil lead to slide smoothly into the feeding channel. Subsequently, the lifting rod resets, and the other lifting rod repeats the above action. Thus, the alternating disturbance of the two lifting rods effectively prevents the pencil lead from blocking the channel opening due to contact, thereby ensuring the smoothness of the inspection operation. Because the two lifting rods are set to rise and fall alternately, it is designed to ensure that at least one lifting rod is in an extended, disturbed state at any given time, further improving the anti-jamming effect. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the three-dimensional structure at the fixed plate. Figure 4 yes Figure 3 Enlarged view of a section at point B in the middle; Figure 5 This is a three-dimensional structural diagram of the fixed plate from another perspective; Figure 6 yes Figure 5 Enlarged view of a section at point C; Figure 7 This is a schematic diagram of the three-dimensional structure of the lifting rod; Figure 8 This is a schematic diagram of the three-dimensional structure of the groove. Figure 9 This is a schematic diagram of the three-dimensional structure of the feeding shell; Figure 10 This is a schematic diagram of the internal three-dimensional structure of the feeding shell; Figure 11 Figure 10 Enlarged view of a section at point D; Figure 12 This is a schematic diagram of the three-dimensional structure at the radial rod. Figure 13 This is a schematic diagram of the planar structure showing the connection relationship between baffle one and baffle two.

[0019] In the diagram: 1. Support 1; 2. Frame; 3. Conveyor belt; 4. Limiting block; 5. Support 2; 6. Fixing plate; 7. Loading shell; 8. Motor 1; 9. Turntable; 10. Motor 2; 11. Baffle 1; 12. Baffle 2; 13. Material frame; 14. Cylinder 1; 15. Cylinder 2; 16. Transverse plate; 17. Guide rod; 18. Cylinder 3; 19. Groove; 20. Lifting rod; 21. Sliding block; 22. Cylinder 4; 23. Cylinder 5; 24. Push block; 25. Unloading plate; 26. Vision inspection device; 27. Inclined chute; 28. Rotating ring; 29. ​​Radial rod; 30. V-shaped pad; 31. Receiving groove; 32. Guide column; 33. Inclined chute; 34. Placement groove; 35. Rotating rod; 36. Drop chute. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please refer to Figures 1-13The present invention provides a technical solution: a color difference detector for the production of colored pencil leads, including a support 1 and a frame 2. The support 1 is equipped with a vision inspection device 26, and the frame 2 is equipped with a conveyor belt 3 for conveying pencil leads. The image acquisition unit of the vision inspection device 26 is aligned with the top of the conveyor belt 3. The image acquisition unit acquires the surface image of the pencil lead conveyed by the conveyor belt 3 and uploads the image to the image processing unit of the vision inspection device 26 for color difference analysis. The device includes an adjustable pencil lead feeding assembly. The adjustable refill feeding assembly includes a fixed plate 6 and a feeding shell 7. Both the fixed plate 6 and the feeding shell 7 are fixedly connected to the bracket 5. Two material frames 13 are symmetrically slidably arranged on one end face of the fixed plate 6. The two material frames 13 cooperate with each other to form a hopper-shaped structure that is wider at the top and narrower at the bottom. Baffle 1 11 and baffle 2 12 are slidably arranged on the inner side of the two material frames 13, respectively. Baffle 1 11 and baffle 2 12 are slidably inserted into each other. A rotating rod 35 is rotatably arranged in the middle of one side of the inner cavity of the feeding shell 7. One end of the rotating rod 35 A rotating ring 28 is fixedly connected. A drop trough 36 is opened in the middle of the upper and lower sides of the upper material shell 7. Multiple receiving grooves 31 are evenly opened along the circumference of the rotating ring 28. A V-shaped pad 30 is fixedly connected to the inner side of the receiving groove 31. The pen refill falls out through the bottom outlet of the hopper-shaped structure formed by the two material frames 13, passes through the drop trough 36 and the receiving groove 31 in sequence, and falls onto the V-shaped pad 30. The V-shaped pad 30 is driven to rotate to a position aligned with the lower drop trough 36. The pen refill falls from the V-shaped pad 30 onto the conveyor belt 3.

[0022] In this embodiment, as Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figures 9-13 As shown, a pen refill removal assembly is installed on the frame 2; The pen refill rejection assembly includes a cylinder 23 fixedly connected to one side of the frame 2. A pusher 24 is fixedly connected to the piston end of the cylinder 23. Multiple placement slots 34 for placing pen refills are opened on the conveyor belt 3. A feed plate 25 is fixedly connected to one side of the upper end of the frame 2. The cylinder 23 drives the pusher 24 to move laterally, pushing the pen refills located on the placement slots 34 to the feed plate 25. The pen refills fall into the collection container along the feed plate 25.

[0023] The fixed plate 6 is equipped with a hopper-shaped structure size adjustment component; The hopper-shaped structure size adjustment assembly includes two cylinders 14, which are symmetrically fixedly connected to both sides of the fixed plate 6. The piston ends of the two cylinders 14 are fixedly connected to the side walls of the two material frames 13 respectively. One end of one material frame 13 is fixedly connected to a cylinder 15, and the piston end of the cylinder 15 is fixedly connected to one end of the baffle 11.

[0024] A motor 8 is fixedly connected to the middle of one side of the outer wall of the feeding shell 7. The output end of the motor 8 is fixedly connected to one end of the rotating rod 35.

[0025] The rotating rod 35 is equipped with a tensioning component for adjusting the size of the V-shaped pad 30; The tensioning assembly includes a turntable 9 fixedly connected to one end of the rotating rod 35. Multiple limiting blocks 4 are evenly distributed and fixedly connected to one side end face of the turntable 9. A radial rod 29 is slidably connected to the inner side of the limiting block 4. The end of the radial rod 29 away from the axis of the turntable 9 is fixedly connected to a V-shaped pad 30, which is made of elastic material.

[0026] A sloping groove plate 27 is rotatably installed in the middle of one side end face of the turntable 9. Multiple sloping grooves 33 are opened along the circumferential direction on the sloping groove plate 27. One end of the radial rod 29 is fixedly connected to a guide post 32, and each guide post 32 slides through a sloping groove 33. A motor 2 10 is fixedly connected in the middle of one side end face of the turntable 9. The output end of the motor 2 10 is fixedly connected to one end of the sloping groove plate 27.

[0027] Specifically, in the prior art, when performing color difference detection on colored pencil leads, multiple leads are placed on a conveyor belt 3, and a visual inspection device 26 is set around the conveyor belt 3. The conveyor belt 3 drives the leads to move to the visual inspection device 26 for detection.

[0028] However, when conveying pen refills in batches, the refills tend to accumulate on the conveyor belt 3, causing the image acquisition unit of the vision inspection device 26 to only capture images of the uppermost refills, resulting in missed detections. Furthermore, if personnel arrange multiple pen refills sequentially on the conveyor belt 3 to avoid this, it leads to high labor intensity and fatigue, slowing down the arrangement speed and affecting continuous inspection efficiency.

[0029] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: This solution is only applicable to pen refills of the same specification parameters in a single operation. First, the narrowest part of the bottom of the hopper-shaped structure formed by the two material frames 13 is used as the arrangement channel; the gap between the first baffle 11, the second baffle 12 and the fixed plate 6 is used as the feeding channel; the V-shaped pad 30 and the receiving groove 31 cooperate with each other to form the pen refill groove.

[0030] Depending on the diameter of the pen refill, two cylinders 14 drive two material frames 13 to move simultaneously towards or away from each other, thereby adjusting the width of the feeding channel to match the pen refill diameter. Furthermore, when the distance between the two material frames 13 changes, baffles 11 and 12 also slide relative to each other. Subsequently, cylinder 2 15 drives baffles 11 and 12 to slide inside the material frames 13, thereby adjusting the width of the feeding channel to match the pen refill length.

[0031] By driving the inclined plate 27 to rotate through the motor 210, multiple guide posts 32 can be moved simultaneously through multiple inclined grooves 33. Then, multiple radial rods 29 slide radially at the same time. The V-shaped pad 30 is stretched through the radial rods 29, thereby adjusting the size of the pen refill groove so that the pen refill groove can only hold one pen refill at a time, and when the pen refill is in the pen refill groove, the edge of the pen refill will not exceed the outer ring of the rotating ring 28.

[0032] After the above adjustments are completed, personnel can put a batch of colored pencil leads into the feeding channel, with the length direction of the leads parallel to the width direction of the feeding channel. The leads will then slide sequentially along the feeding channel into the arrangement channel under the action of gravity. Only one lead can enter the channel opening at a time, so the multiple leads entering the arrangement channel will be stacked vertically.

[0033] Simultaneously, the motor 8 drives the rotating rod 35 and the rotating ring 28 to rotate. When the receiving groove 31 aligns with the arrangement channel, the pen refills will fall onto the V-shaped pad 30 via the upper drop groove 36 and the receiving groove 31. As the rotating ring 28 continues to rotate, the pen refills on the V-shaped pad 30 will enter the inner cavity of the upper housing 7. Furthermore, before the next receiving groove 31 aligns with the arrangement channel, the pen refills in the arrangement channel will be blocked by the outer ring of the rotating ring 28, thus separating multiple pen refills through the above operation.

[0034] When the pen refill slot aligns with the drop chute 36 on the lower side of the upper casing 7, the pen refill will fall into the placement slot 34 on the conveyor belt 3, and the conveyor belt 3 will move the pen refill. Repeating this operation allows multiple pen refills to be placed sequentially into multiple placement slots 34. When the pen refill reaches the visual inspection device 26, the image acquisition unit acquires an image of the pen refill and uploads it to the image processing unit for color difference analysis. If the pen refill has no color difference, it will move directly to the end of the conveyor belt 3 and fall into the container for collecting qualified pen refills. If the pen refill has a color difference, the conveyor belt 3 will stop operating when the pen refill aligns with the push block 24. Subsequently, cylinder 5 23 drives the push block 24 to move laterally, pushing the pen refill with a color difference to the lower plate 25, where it falls into the container for placing unqualified pen refills. This achieves the rejection of unqualified pen refills.

[0035] Throughout the entire inspection process, personnel only need to place multiple pen refills to be inspected into the feeding channel in a unified orientation. With the coordinated operation of multiple structures, the refills are sequentially separated and placed in their respective placement slots 34. The conveyor belt 3 then moves the refills to the vision inspection device 26 for color difference detection, rejecting those with color differences. This avoids the problem of refills piling up on the conveyor belt 3 during batch transport, preventing the vision inspection device 26 from only capturing images of the uppermost refills and resulting in missed detections. Furthermore, it eliminates the need for manual arrangement of multiple refills on the conveyor belt 3, reducing labor intensity and improving continuous inspection efficiency.

[0036] In this embodiment, as Figure 3 , Figure 4 , Figure 7 , Figure 8 As shown, the fixing plate 6 is equipped with an anti-jamming component; The anti-jamming component includes a groove 19 located on one side of the bottom of the material frame 13, and a lifting rod 20 is slidably inserted through the groove 19.

[0037] A guide rod 17 is fixedly connected to one side of the fixed plate 6. A transverse plate 16 is slidably arranged on the guide rod 17. Two sliders 21 are symmetrically slidably arranged on the lower surface of the transverse plate 16. A cylinder 22 is fixedly connected to the lower end of the slider 21. The piston ends of the two cylinders 22 are respectively fixedly connected to one end of the two lifting rods 20.

[0038] A cylinder 18 is fixedly connected to one side of the material frame 13, and the piston end of the cylinder 18 is fixedly connected to one end of the transverse plate 16.

[0039] Specifically, in the above embodiments, although multiple pen refills can be overlapped using an arrangement channel for subsequent separation, when two pen refills abut at the channel opening, the refills can easily get stuck, preventing them from sliding properly into the arrangement channel and thus affecting the normal progress of subsequent testing.

[0040] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: When the material frame 13 moves laterally, the slider 21 also slides on the transverse plate 16. Depending on the width of the feeding channel, the cylinder 3 18 can be used to drive the transverse plate 16 to move laterally on the guide rod 17, thereby adjusting the position of the end of the lifting rod 20 so that the end of the lifting rod 20 is aligned with the center of the pen refill.

[0041] As the pen refill slides down the feeding channel, two cylinders 22 alternately drive the lifting rods 20 to rise and fall. When one lifting rod 20 rises and extends from the groove 19, its end pushes up and jams against the middle of the pen refill at the channel opening, disrupting the end-to-end contact between that pen refill and the adjacent pen refill, forcing the other pen refill to slide smoothly into the feeding channel. Then, the lifting rod 20 returns to its original position, and the other lifting rod 20 repeats the above action. Thus, the alternating disturbance of the two lifting rods 20 effectively prevents the pen refill from blocking the channel opening due to contact, thereby ensuring the smoothness of the inspection operation. Because the two lifting rods 20 are set to rise and fall alternately, it is designed to ensure that at least one lifting rod 20 is in an extended, disturbed state at any given time, further improving the anti-jamming effect.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A color difference detector for colored pencil lead production, comprising a support (1) and a frame (2), wherein a visual inspection device (26) is provided on the support (1), and a conveyor belt (3) for conveying pencil leads is provided on the frame (2), wherein the image acquisition unit of the visual inspection device (26) is aligned above the conveyor belt (3), the image acquisition unit acquires an image of the surface of the pencil lead conveyed by the conveyor belt (3), and uploads the image to the image processing unit of the visual inspection device (26) for color difference analysis, characterized in that: Includes an adjustable refill feed assembly; The adjustable pen refill feeding assembly includes a fixed plate (6) and an upper shell (7). The fixed plate (6) and the upper shell (7) are both fixedly connected to the bracket (5). Two material frames (13) are symmetrically slidably arranged on one side of the fixed plate (6). The two material frames (13) cooperate with each other to form a hopper-shaped structure that is wider at the top and narrower at the bottom. Baffle one (11) and baffle two (12) are slidably arranged on the inner side of the two material frames (13). Baffle one (11) and baffle two (12) are slidably inserted. A rotating rod (35) is rotatably arranged in the middle of one side of the inner cavity of the upper shell (7). 5) A rotating ring (28) is fixedly connected to one end. A drop groove (36) is provided in the middle of the upper and lower sides of the upper shell (7). Multiple receiving grooves (31) are evenly provided along the circumference of the rotating ring (28). A V-shaped pad (30) is fixedly connected to the inner side of the receiving groove (31). The pen refill falls out through the bottom outlet of the hopper-shaped structure formed by the two material frames (13), passes through the drop groove (36) and the receiving groove (31) in sequence, and falls onto the V-shaped pad (30). The V-shaped pad (30) is driven to rotate to the position aligned with the lower drop groove (36). The pen refill falls from the V-shaped pad (30) onto the conveyor belt (3).

2. A color difference detector for colored pencil lead production according to claim 1, characterized in that: The frame (2) is equipped with a pen refill removal assembly; The pen refill removal assembly includes a cylinder five (23) fixedly connected to one side of the frame (2). A push block (24) is fixedly connected to the piston end of the cylinder five (23). Multiple placement slots (34) for placing pen refills are provided on the conveyor belt (3). A feed plate (25) is fixedly connected to one side of the upper end of the frame (2). The cylinder five (23) drives the push block (24) to move laterally, pushing the pen refills located in the placement slots (34) to the feed plate (25). The pen refills fall into the collection container along the feed plate (25).

3. A color difference detector for colored pencil lead production according to claim 1, characterized in that: The fixed plate (6) is provided with a hopper-shaped structure size adjustment component; The hopper-shaped structure size adjustment assembly includes two cylinders (14), which are symmetrically fixedly connected to both sides of the fixed plate (6). The piston ends of the two cylinders (14) are respectively fixedly connected to the side walls of the two material frames (13). One end of one material frame (13) is fixedly connected to a cylinder (15), and the piston end of the cylinder (15) is fixedly connected to one end of the baffle (11).

4. A color difference detector for colored pencil lead production according to claim 1, characterized in that: A motor (8) is fixedly connected to the middle of one side of the outer wall of the feeding shell (7), and the output end of the motor (8) is fixedly connected to one end of the rotating rod (35).

5. A color difference detector for colored pencil lead production according to claim 1, characterized in that: The rotating rod (35) is provided with a tensioning component for adjusting the size of the V-shaped pad (30); The stretching assembly includes a turntable (9) fixedly connected to one end of a rotating rod (35). Multiple limiting blocks (4) are evenly distributed and fixedly connected to one side end face of the turntable (9) along the circumference. A radial rod (29) is slidably connected to the inner side of the limiting block (4). The end of the radial rod (29) away from the axis of the turntable (9) is fixedly connected to a V-shaped pad (30). The V-shaped pad (30) is made of elastic material.

6. A color difference detector for colored pencil lead production according to claim 5, characterized in that: A sloping groove plate (27) is rotatably provided in the middle of one side end face of the turntable (9). Multiple sloping grooves (33) are opened along the circumferential direction on the sloping groove plate (27). A guide post (32) is fixedly connected to one end of the radial rod (29), and each guide post (32) slides through a sloping groove (33). A second motor (10) is fixedly connected in the middle of one side end face of the turntable (9). The output end of the second motor (10) is fixedly connected to one end of the sloping groove plate (27).

7. A color difference detector for colored pencil lead production according to claim 1, characterized in that: The fixing plate (6) is equipped with an anti-jamming component; The anti-jamming component includes a groove (19) on one side of the bottom of the material frame (13), and a lifting rod (20) is slidably inserted through the groove (19).

8. A color difference detector for colored pencil lead production according to claim 7, characterized in that: A guide rod (17) is fixedly connected to one side of the fixed plate (6). A transverse plate (16) is slidably arranged on the guide rod (17). Two sliders (21) are symmetrically slidably arranged on the lower surface of the transverse plate (16). A cylinder (22) is fixedly connected to the lower end of the slider (21). The piston ends of the two cylinders (22) are respectively fixedly connected to one end of the two lifting rods (20).

9. A color difference detector for colored pencil lead production according to claim 7, characterized in that: A cylinder three (18) is fixedly connected to one side of the material frame (13), and the piston end of the cylinder three (18) is fixedly connected to one end of the transverse plate (16).

Images