High strength waterproof coated paper tube paper tube external inspection machine

Abstract

The application relates to the technical field of paper tube external inspection equipment, in particular to a high-strength waterproof coated paper tube external inspection machine, which comprises a machine body, a conveying belt arranged in the machine body, a plurality of placing seats arranged on the conveying belt, a fixing frame fixedly connected in the machine body, a conical paper tube positioning mechanism arranged on the fixing frame, a driving mechanism rotatably connected on the fixing frame, a paper tube inner wall detection mechanism arranged on the driving mechanism, and a gas injection seat fixedly connected on the fixing frame. The conical paper tube positioning mechanism can accurately constrain conical paper tubes of different sizes in the middle of the placing seat after the conical paper tubes are placed on the placing seat, the conical paper tubes are prevented from being offset to cause uneven spacing between the detection equipment and the surface of the conical paper tubes and deviation of the light source irradiation angle, the missed detection and the false detection caused by the position deviation are eliminated from the positioning end, and the detection precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of paper tube external inspection equipment technology, and in particular to a high-strength waterproof coated paper tube external inspection machine. Background Technology

[0002] High-strength waterproof coated paper tubes are special paper tubes treated with a surface coating process, combining high mechanical strength with excellent waterproof and moisture-proof properties. Their core feature is the application or coating of a waterproof film (such as PE, PP, PET plastic films or fluorocarbon coatings) to the surface of a regular paper tube substrate, forming a dense protective layer. Simultaneously, optimized raw material ratios and structural design enhance overall strength. The paper tube substrate often uses specialized new materials such as high-burst-resistance kraft paper and yarn tube paper, typically adhering to relevant substrate strength standards. Its resistance to salt spray and artificial weathering must meet specified indicators to ensure coating density, corrosion resistance, and waterproof durability. The paper tube external inspection machine is a key piece of equipment for surface inspection after paper tube production. It efficiently detects appearance defects in the paper tubes, ensuring product quality.

[0003] The prior art publication CN120685658A discloses a novel external inspection machine for paper tubes. Through the coordinated operation of a camera detection component on a vertical guide axis and a surface light source auxiliary component on a horizontal guide axis, it can perform multi-angle, all-around inspection of defects such as dents and pits on the surface of the paper tubes. The surface light source provides uniform and stable illumination, and the inspection camera captures images from multiple angles to form a three-dimensional image structure. Compared with traditional single-angle inspection methods, the detection accuracy is significantly improved, enabling the detection of micron-level defects and effectively avoiding missed and false detections.

[0004] Existing technology enables the conveying and visual inspection of cylindrical paper tubes. However, when inspecting conical paper tubes, the lack of a positioning and conveying structure adapted to the conical paper tube makes it difficult for the conical paper tube to be accurately positioned for inspection, affecting the accuracy of the inspection data. Furthermore, existing technology can inspect the outer surface of the paper tube but lacks a structure for inspecting the inner wall, resulting in a limited inspection range and the possibility of missed inspections.

[0005] In summary, the existing technology lacks a suitable positioning and inner wall inspection technique for tapered paper tubes. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a high-strength waterproof coated paper tube external inspection machine.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-strength waterproof coated paper tube external inspection machine, comprising a machine body, a conveyor belt provided inside the machine body, a plurality of placement seats provided on the conveyor belt, a fixed frame fixedly connected inside the machine body, a conical paper tube positioning mechanism provided on the fixed frame, a driving mechanism rotatably connected to the fixed frame, a paper tube inner wall detection mechanism provided on the driving mechanism, and an air jet seat fixedly connected to the fixed frame.

[0008] Preferably, a mounting base is rotatably connected to the bottom end of the placement seat, the mounting base is fixedly connected to the conveyor belt, an annular toothed rack is fixedly connected to the outside of the placement seat, and a conical paper tube is placed on the placement seat.

[0009] Preferably, the conical paper tube positioning mechanism includes a movable frame, with electric push rods fixedly connected to both ends of the movable frame, and the other end of the electric push rods fixedly connected to the fixed frame. A cylinder is fixedly connected to the movable frame, and a movable ring is fixedly connected to the output end of the cylinder. Multiple racks are fixedly connected to the lower part of the movable ring in a ring structure.

[0010] Preferably, a plurality of adjusting rods are rotatably connected in a ring structure below the movable frame. A gear is fixedly connected to the top of each adjusting rod, and the gear meshes with a rack for transmission. A positioning ball is rotatably connected to the bottom of each adjusting rod, and the positioning ball is in sliding contact with the outer wall of the conical paper tube.

[0011] Preferably, the driving mechanism includes a lead screw, which is rotatably connected to a fixed frame. A motor is fixedly connected to the top of the lead screw, and the motor is fixedly connected to the fixed frame. A transmission wheel A is fixedly connected to the bottom of the lead screw. A transmission wheel B is movably engaged with one side of the transmission wheel A, and one side of the transmission wheel B is movably engaged with a ring rack.

[0012] Preferably, an adjustment frame is rotatably connected to the transmission wheel B, and an L-shaped contact rod is fixedly connected to the other end of the adjustment frame. The L-shaped contact rod is slidably engaged with the fixed frame, and a spring is fixedly connected to the adjustment frame. The other end of the spring is fixedly connected to the fixed frame.

[0013] Preferably, the paper tube inner wall detection mechanism includes a movable rod, the outer wall of which is slidably connected to the fixed frame, one side of the top of the movable rod is threadedly connected to a lead screw, one end of the movable rod near the lead screw is in movable contact with an L-shaped contact rod, a second camera is fixedly connected to the bottom of the movable rod, and a first air jet pipe is fixedly connected through the inner wall of the movable rod, with the output end of the first air jet pipe located above the lens of the second camera.

[0014] Preferably, a piston plate is slidably fitted through the inner wall of the jet seat, a slotted plate is fixedly connected to the outer end of the piston plate, an L-shaped rod is slidably fitted to the inner wall of the slotted plate, a driven wheel is fixedly connected to the other end of the L-shaped rod, the driven wheel is rotatably connected to the fixed frame, and a driving wheel is fixedly connected to the outer wall of the middle part of the lead screw, the driving wheel and the driven wheel are meshed and driven for transmission.

[0015] Preferably, a filter element is installed inside the input end of the jet seat, a flexible hose is fixedly connected to one side of the output end of the jet seat, the other end of the flexible hose is fixedly connected to the output end of the first jet pipe, a second jet pipe is fixedly connected to the other end of the output end of the jet seat, and two cameras are fixedly installed on one side of the bottom end of the fixing frame, with the two output ends of the second jet pipe located above the lenses of the first cameras.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting up a placement seat and an adjustable conical paper tube positioning mechanism, after the conical paper tube is placed on the placement seat, the conical paper tube positioning mechanism can accurately constrain conical paper tubes of different sizes in the middle of the placement seat, avoiding uneven spacing between the detection equipment and the surface of the conical paper tube and deviation of the light source illumination angle caused by the conical paper tube being offset. This eliminates missed detections and false detections caused by positional deviations from the positioning end, ensuring detection accuracy.

[0018] 2. By setting up a paper tube inner wall detection mechanism, after positioning the conical paper tube, the driving mechanism can drive the paper tube inner wall detection mechanism to extend into the inner wall of the conical paper tube to complete the image acquisition and quality inspection of inner wall defects. In conjunction with the external camera 2, it solves the core problems of limited detection range and missed detection in the existing technology, and greatly improves the integrity and comprehensiveness of the appearance inspection of the conical paper tube. At the same time, while driving the paper tube inner wall detection mechanism, the driving mechanism can also drive the placement seat to rotate, which not only meets the requirement of the external detection camera 2 to scan the conical paper tube 360° without dead angles, but also realizes the circumferential full coverage acquisition of the conical inner wall by the internal detection camera 1.

[0019] 3. By setting up a jet seat, the jetting action of the jet seat is synchronized with the lifting action of the inner wall detection mechanism driven by the drive mechanism, so that the jet seat continuously jets air, forming an air curtain protective layer around the lens. This can block dust, paper scraps, fibers and other impurities from the inner wall of the conical paper tube from adhering to the lens surface in real time. There is no need to set up a separate lens dust removal station or manual cleaning steps. This ensures the dust removal effect without increasing the detection time or affecting the overall efficiency of synchronous detection of the inner and outer walls of the conical paper tube, and is suitable for the rhythm requirements of batch online detection. Attached Figure Description

[0020] Figure 1This is a side view of the overall structure of a high-strength waterproof coated paper tube external inspection machine according to the present invention;

[0021] Figure 2 This is a schematic diagram of the other side of the overall structure of the high-strength waterproof coated paper tube external inspection machine of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the placement seat and other components of a high-strength waterproof coated paper tube external inspection machine according to the present invention;

[0023] Figure 4 This is a schematic diagram of the fixing frame structure of a high-strength waterproof coated paper tube external inspection machine according to the present invention;

[0024] Figure 5 This is a schematic diagram of the conical paper tube positioning mechanism of a high-strength waterproof coated paper tube external inspection machine according to the present invention;

[0025] Figure 6 This is a schematic diagram of the drive mechanism structure of a high-strength waterproof coated paper tube external inspection machine according to the present invention;

[0026] Figure 7 This is a schematic diagram of the paper tube inner wall inspection mechanism of a high-strength waterproof coated paper tube external inspection machine of the present invention;

[0027] Figure 8 This is a partial cross-sectional schematic diagram of the air jet seat structure of a high-strength waterproof coated paper tube external inspection machine according to the present invention.

[0028] The diagram shows: 1. Machine body; 2. Conveyor belt; 3. Placement seat; 4. Fixing frame; 5. Conical paper tube positioning mechanism; 6. Drive mechanism; 7. Paper tube inner wall detection mechanism; 8. Air jet seat; 301. Mounting seat; 302. Ring rack; 303. Conical paper tube; 501. Moving frame; 502. Electric push rod; 503. Cylinder; 504. Moving ring; 505. Rack; 506. Adjusting rod; 507. Gear; 508. Positioning ball. Body; 601, lead screw; 602, motor; 603, transmission wheel A; 604, transmission wheel B; 605, adjusting frame; 606, L-shaped contact rod; 607, spring; 608, driving wheel; 701, movable rod; 702, camera two; 703, jet pipe one; 801, piston plate; 802, slotted plate; 803, L-shaped rod; 804, driven wheel; 805, hose; 806, jet pipe two; 401, camera one. Detailed Implementation

[0029] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] like Figures 1-8 The high-strength waterproof coated paper tube external inspection machine shown includes a machine body 1, a conveyor belt 2 inside the machine body 1, multiple placement seats 3 on the conveyor belt 2, a fixed frame 4 fixedly connected inside the machine body 1, a conical paper tube positioning mechanism 5 on the fixed frame 4, a drive mechanism 6 rotatably connected to the fixed frame 4, a paper tube inner wall detection mechanism 7 on the drive mechanism 6, and an air jet seat 8 fixedly connected to the fixed frame 4.

[0031] like Figure 3 As shown, a mounting base 301 is rotatably connected to the bottom end of the placement seat 3. The mounting base 301 is fixedly connected to the conveyor belt 2. An annular rack 302 is fixedly connected to the outside of the placement seat 3. A conical paper tube 303 is placed on the placement seat 3.

[0032] The placement base 3 is made of aluminum alloy in one piece, and a high-elasticity silicone pad is pasted on the inner wall. It can not only stably support the conical paper tube 303, but also avoid scratching the waterproof coating on the surface of the conical paper tube 303. The surface of the silicone pad is treated with anti-slip to prevent the conical paper tube 303 from slipping when it rotates.

[0033] like Figure 5 As shown, the conical paper tube positioning mechanism 5 includes a movable frame 501. Electric push rods 502 are fixedly connected to both ends of the movable frame 501. The other end of the electric push rods 502 is fixedly connected to the fixed frame 4. A cylinder 503 is fixedly connected to the movable frame 501. A movable ring 504 is fixedly connected to the output end of the cylinder 503. Multiple racks 505 are fixedly connected to the lower part of the movable ring 504 in a ring structure.

[0034] The movable frame 501 is made of aluminum alloy, which is lightweight and has sufficient rigidity; the electric push rod 502 is a small electric telescopic rod, which can accurately adjust the height of the movable frame 501 to meet the positioning requirements of conical paper tubes 303 of different lengths; the cylinder 503 is a small pneumatic cylinder, which can quickly push the movable ring 504 to rise and fall, realize the rapid opening and closing of the conical paper tube positioning mechanism 5, and adapt to the high-efficiency rhythm of batch testing.

[0035] Multiple adjusting rods 506 are rotatably connected in a ring structure below the movable frame 501. A gear 507 is fixedly connected to the top of each adjusting rod 506, meshing with a rack 505 for transmission. A positioning ball 508 is rotatably connected to the bottom of each adjusting rod 506, slidingly contacting the outer wall of the conical paper tube 303. To achieve intelligent and precise positioning of the conical paper tube 303, real-time monitoring of its positioning status, and feedback adjustment, an intelligent sensing component is integrated into the positioning ball 508. Specifically, a miniature pressure sensor is patch-mounted on the contact surface of the positioning ball 508, with its sensing surface directly contacting the outer wall of the conical paper tube 303. This allows for precise capture of pressure changes between the two, providing real-time feedback on the contact force between the positioning ball 508 and the outer wall of the conical paper tube 303, thus achieving intelligent and precise positioning and dynamic adjustment of the conical paper tube 303.

[0036] The adjusting rod 506 is made of stainless steel and can rotate flexibly around the movable frame 501; the positioning ball 508 is made of wear-resistant nylon with a smooth surface, and will not damage the waterproof membrane when it slides in contact with the outer wall of the conical paper tube 303, ensuring firm positioning. Multiple positioning balls 508 are distributed in a ring, which can accurately constrain the conical paper tube 303 in the middle of the placement seat 3.

[0037] By setting up a placement seat 3 and an adjustable conical paper tube positioning mechanism 5, after the conical paper tube 303 is placed on the placement seat 3, the conical paper tube positioning mechanism 5 can accurately constrain conical paper tubes 303 of different sizes in the middle of the placement seat 3, avoiding uneven spacing between the detection equipment and the surface of the conical paper tube 303 and deviation of the light source illumination angle caused by the offset of the conical paper tube 303. This eliminates missed detections and false detections caused by positional deviations from the positioning end, ensuring detection accuracy.

[0038] like Figure 6 As shown, the drive mechanism 6 includes a lead screw 601, which is rotatably connected to the fixed frame 4. A motor 602 is fixedly connected to the top of the lead screw 601, and the motor 602 is fixedly connected to the fixed frame 4. A transmission wheel A603 is fixedly connected to the bottom of the lead screw 601. A transmission wheel B604 is movably engaged with one side of the transmission wheel A603, and one side of the transmission wheel B604 is movably engaged with the ring rack 302.

[0039] The lead screw 601 is made of alloy steel and can accurately control the insertion depth of the paper tube inner wall detection mechanism 7, adapting to tapered paper tubes 303 of different lengths; the motor 602 is a stepper motor, which can adjust the lifting speed according to the length of the tapered paper tube 303 and the detection accuracy.

[0040] An adjusting frame 605 is rotatably connected to the transmission wheel B604. An L-shaped contact rod 606 is fixedly connected to the other end of the adjusting frame 605. The L-shaped contact rod 606 is slidably engaged with the fixed frame 4. A spring 607 is fixedly connected to the adjusting frame 605. The other end of the spring 607 is fixedly connected to the fixed frame 4.

[0041] The adjustment frame 605 is made of aluminum alloy, which is lightweight and has sufficient rigidity. The spring 607 is made of stainless steel tension spring, which has a stable elastic coefficient. When the adjustment frame 605 is pushed in the natural state, the transmission wheel B604 is tightly engaged with the transmission wheel A603 and the ring rack 302 to ensure reliable transmission.

[0042] like Figure 7 As shown, the paper tube inner wall detection mechanism 7 includes a movable rod 701. The outer wall of the movable rod 701 is slidably connected to the fixed frame 4. One side of the top of the movable rod 701 is threadedly connected to the lead screw 601. The end of the movable rod 701 near the lead screw 601 is in contact with the L-shaped contact rod 606. A second camera 702 is fixedly connected to the bottom of the movable rod 701. A first air jet pipe 703 is fixedly connected through the inner wall of the movable rod 701. The output end of the first air jet pipe 703 is located above the lens of the second camera 702.

[0043] The movable rod 701 is made of stainless steel, which is rigid and not easily deformed, and can move up and down along the fixed frame 4.

[0044] like Figure 4 , Figure 8 As shown, a piston plate 801 is slidably fitted through the inner wall of the jet seat 8. A slotted plate 802 is fixedly connected to the outer end of the piston plate 801. An L-shaped rod 803 is slidably fitted to the inner wall of the slotted plate 802. A driven wheel 804 is fixedly connected to the other end of the L-shaped rod 803. The driven wheel 804 is rotatably connected to the fixed frame 4. A driving wheel 608 is fixedly connected to the outer wall of the middle part of the lead screw 601. The driving wheel 608 and the driven wheel 804 are meshed and driven for transmission.

[0045] The jet seat 8 is made of aluminum alloy, with excellent internal sealing performance and a smooth inner wall to reduce the sliding resistance of the piston plate 801. The piston plate 801 fits tightly with the inner wall of the jet seat 8 and is equipped with a sealing ring to ensure airtightness. Compressed air supply can be achieved through reciprocating sliding without the need for an additional air pump. The structure is simplified and energy-efficient.

[0046] A filter element is installed inside the input end of the jet seat 8. A hose 805 is fixedly connected to one side of the output end of the jet seat 8. The other end of the hose 805 is fixedly connected to the output end of the jet pipe 703. A jet pipe 806 is fixedly connected to the other end of the output end of the jet seat 8. Two cameras 401 are fixedly installed on one side of the bottom end of the mounting bracket 4. The two output ends of the jet pipe 806 are located above the lenses of the cameras 401.

[0047] One-way valves are installed in both the input and output ends of the jet mount 8. The exhaust ports of jet pipe 2 806 and jet pipe 1 703 are rectangular. The filter element is a high-precision air filter element, which can effectively filter dust and impurities in the air and prevent impurities from entering the jet channel or adhering to the lens surface; the hose 805 is a wear-resistant and corrosion-resistant hose that can be raised, lowered and bent synchronously with the movable rod 701. Jet pipe 2 806 adopts a bifurcated structure, with the two output ends corresponding to the two cameras 1 401 respectively, ensuring that both lenses can be covered by the air curtain, and there are no dead angles in dust removal; the rectangular exhaust port can make the airflow diffuse evenly and form a dense air curtain, which is more effective in dust removal than a circular port.

[0048] Working principle: First, the operator places the conical paper tubes 303 one by one on the placement seat 3 of the conveyor belt 2. The conveyor belt 2 drives the placement seat 3 and the conical paper tubes 303 to move at a constant speed. When the paper tube moves to the detection area below the fixed frame 4, the conveyor belt 2 stops running, completing the positioning. At this time, the cylinder 503 is activated, pushing the moving ring 504 downward, which drives the rack 505 to descend synchronously. The rack 505 meshes with the gear 507, driving multiple adjusting rods 506 to rotate synchronously, so that the positioning ball 508 moves closer to the outer wall of the conical paper tube 303 until the positioning ball 508 is in close contact with the outer wall of the conical paper tube 303, accurately constraining the conical paper tube 303 in the middle of the placement seat 3.

[0049] Then, the motor 602 of the drive mechanism 6 is started. The motor 602 drives the lead screw 601 to rotate at a constant speed. The lead screw 601 drives the movable rod 701 to slide downward along the fixed frame 4. The paper tube inner wall detection mechanism 7 descends synchronously, and the camera 702 gradually extends into the inner wall of the conical paper tube 303. At the same time, during the descent of the movable rod 701, its end moves away from the L-shaped contact rod 606, the spring 607 is stretched, and the adjusting frame 605 moves, so that the transmission wheel B604 meshes tightly with the transmission wheel A603 and the ring rack 302 of the placement seat 3, causing the placement seat 3 to rotate at a constant speed, and thus causing the conical paper tube 303 to rotate synchronously. At the same time, the driving wheel 608 in the middle of the lead screw 601 meshes with the driven wheel 804 to drive the L-shaped rod 803 to rotate. The L-shaped rod 803 slides with the slotted plate 802, driving the piston plate 801 to make linear reciprocating motion in the jet seat 8. After being filtered by the filter element, the compressed air is delivered to the jet pipe 703 through the hose 805 and to the lens of the camera 401 through the jet pipe 806, forming an air curtain to block dust, paper scraps and other impurities from adhering in real time.

[0050] During the uniform rotation of the conical paper tube 303, two cameras 401 at the bottom of the fixed frame 4 perform a 360° scan of the outer wall of the conical paper tube 303 without blind spots, collect images of the outer wall, and identify defects such as dents, wrinkles, stains, and coating bubbles on the outer wall; the camera 702 extending into the inner wall of the conical paper tube 303 simultaneously performs a circumferential full-coverage acquisition of the inner wall of the conical paper tube 303, and identifies defects such as scratches, damage, and coating peeling on the inner wall. The detection data is transmitted to the control system of the machine body 1 in real time. The system automatically analyzes and processes the images, completes defect identification, classification and recording, and marks unqualified products.

[0051] After the inner and outer walls are inspected, the motor 602 rotates in the reverse direction, causing the lead screw 601 to rotate in the reverse direction. The movable rod 701 slides upward, and the paper tube inner wall inspection mechanism 7 is pulled out from the inner wall of the conical paper tube 303, and the camera 702 disengages from the paper tube. During the upward movement of the movable rod 701, it squeezes the L-shaped contact rod 606 and moves it upward, pulling the adjusting frame 605 to reset. The transmission wheel B604 disengages from the transmission wheel A603 and the ring rack 302, and the placement seat 3 stops rotating. At the same time, the cylinder 503 moves in the reverse direction, pulling the moving ring 504 upward, causing the rack 505, gear 507, and adjusting rod 506 to reset. The positioning ball 508 disengages from the conical paper tube 303, and the positioning is released.

[0052] After the positioning is released, the conveyor belt 2 resumes operation and transports the inspected conical paper tube 303 to the next station.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] 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 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 claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A high-strength waterproof coated paper tube external inspection machine, comprising a machine body (1), characterized in that: The machine body (1) is provided with a conveyor belt (2), and multiple placement seats (3) are provided on the conveyor belt (2). A fixed frame (4) is fixedly connected inside the machine body (1). A conical paper tube positioning mechanism (5) is provided on the fixed frame (4). A drive mechanism (6) is rotatably connected on the fixed frame (4). A paper tube inner wall detection mechanism (7) is provided on the drive mechanism (6). An air jet seat (8) is fixedly connected on the fixed frame (4).

2. The high-strength waterproof coated paper tube external inspection machine according to claim 1, characterized in that: The bottom end of the placement seat (3) is rotatably connected to an installation seat (301), the installation seat (301) is fixedly connected to the conveyor belt (2), the outer side of the placement seat (3) is fixedly connected to an annular toothed rack (302), and a conical paper tube (303) is placed on the placement seat (3).

3. The high-strength waterproof coated paper tube external inspection machine according to claim 2, characterized in that: The conical paper tube positioning mechanism (5) includes a movable frame (501), with electric push rods (502) fixedly connected to both ends of the movable frame (501). The other end of the electric push rods (502) is fixedly connected to the fixed frame (4). A cylinder (503) is fixedly connected to the movable frame (501). A movable ring (504) is fixedly connected to the output end of the cylinder (503). Multiple racks (505) are fixedly connected to the lower part of the movable ring (504) in a ring structure.

4. The high-strength waterproof coated paper tube external inspection machine according to claim 3, characterized in that: The movable frame (501) has a ring structure with multiple adjusting rods (506) rotatably connected below it. A gear (507) is fixedly connected to the top of the adjusting rod (506). The gear (507) meshes with the rack (505) for transmission. A positioning ball (508) is rotatably connected to the bottom of the adjusting rod (506). The positioning ball (508) slides in contact with the outer wall of the conical paper tube (303).

5. A high-strength waterproof coated paper tube external inspection machine according to claim 2, characterized in that: The drive mechanism (6) includes a lead screw (601), which is rotatably connected to the fixed frame (4). A motor (602) is fixedly connected to the top of the lead screw (601), and the motor (602) is fixedly connected to the fixed frame (4). A transmission wheel A (603) is fixedly connected to the bottom of the lead screw (601). A transmission wheel B (604) is movably meshed with one side of the transmission wheel A (603), and one side of the transmission wheel B (604) is movably meshed with a ring rack (302).

6. The high-strength waterproof coated paper tube external inspection machine according to claim 5, characterized in that: An adjusting frame (605) is rotatably connected to the transmission wheel B (604). An L-shaped contact rod (606) is fixedly connected to the other end of the adjusting frame (605). The L-shaped contact rod (606) is slidably engaged with the fixed frame (4). A spring (607) is fixedly connected to the adjusting frame (605). The other end of the spring (607) is fixedly connected to the fixed frame (4).

7. A high-strength waterproof coated paper tube external inspection machine according to claim 6, characterized in that: The paper tube inner wall detection mechanism (7) includes a movable rod (701). The outer wall of the movable rod (701) is slidably connected to the fixed frame (4). The top side of the movable rod (701) is threadedly connected to the lead screw (601). The end of the movable rod (701) near the lead screw (601) is in contact with the L-shaped contact rod (606). The bottom end of the movable rod (701) is fixedly connected to a second camera (702). The inner wall of the movable rod (701) is fixedly connected to a first jet pipe (703). The output end of the first jet pipe (703) is located above the lens of the second camera (702).

8. A high-strength waterproof coated paper tube external inspection machine according to claim 7, characterized in that: A piston plate (801) is slidably fitted through the inner wall of the jet seat (8). A slotted plate (802) is fixedly connected to the outer end of the piston plate (801). An L-shaped rod (803) is slidably fitted to the inner wall of the slotted plate (802). A driven wheel (804) is fixedly connected to the other end of the L-shaped rod (803). The driven wheel (804) is rotatably connected to the fixed frame (4). A driving wheel (608) is fixedly connected to the outer wall of the middle part of the lead screw (601). The driving wheel (608) and the driven wheel (804) are meshed and driven.

9. A high-strength waterproof coated paper tube external inspection machine according to claim 8, characterized in that: A filter element is installed inside the input end of the jet seat (8). A hose (805) is fixedly connected to one side of the output end of the jet seat (8). The other end of the hose (805) is fixedly connected to the output end of the first jet pipe (703). A second jet pipe (806) is fixedly connected to the other end of the output end of the jet seat (8). Two cameras (401) are fixedly installed on one side of the bottom end of the fixing frame (4). The two output ends of the second jet pipe (806) are located above the lens of the first camera (401).

Images