A paper tube detection device and a detection method thereof

Abstract

The application discloses a paper tube detection device and a detection method thereof, which comprises a rack, a conveying line arranged on the rack, a stop mechanism arranged on the rack and used for stopping the paper tube on the conveying line, an inner diameter detection mechanism connected with one end of the conveying line, a height detection mechanism arranged adjacent to the inner diameter detection mechanism, a discharging mechanism arranged adjacent to the height detection mechanism, and a linkage pushing mechanism. The stop mechanism is used for stopping the paper tube to be detected on the conveying line, and the linkage pushing mechanism is used for transferring the paper tube between the stop mechanism and the inner diameter detection mechanism to the inner diameter detection mechanism and transferring the paper tube in the inner diameter detection mechanism to the height detection mechanism. Advantages: the conveying, stopping, inner diameter detection, height detection and discharging are integrated in one detection line, the automatic synchronous transfer of the paper tube between the stations is realized through the linkage pushing mechanism, the station switching of two paper tubes can be simultaneously completed through one action, manual carrying or intervention is not needed, the detection rhythm is fast, and the batch detection is suitable.

Description

Technical Field

[0001] This invention relates to the field of paper tube detection, specifically to a paper tube detection device and its detection method. Background Technology

[0002] As the mandrel for winding packaging materials (such as film, paper, and tape), the inner diameter and height accuracy of paper tubes directly affect the subsequent winding quality and the performance of the finished product. If the inner diameter of the paper tube is too small, the mandrel may not be able to be inserted or may jam; if the height is inconsistent, it will affect the flatness of the end face and the appearance of the packaging. Therefore, it is crucial to inspect the inner diameter and height of paper tubes during the production process. However, current paper tube inspection methods are mostly manual: operators manually check the inner diameter using go / no-go gauges and then measure the height with a height gauge, which has many problems: First, manual inspection requires picking up, placing, measuring, and recording each tube individually, which is slow and difficult to meet the needs of mass production; second, different operators have different strengths and interpretation habits, which can easily lead to misjudgments or missed inspections, and fatigue after long hours of work will further reduce the consistency of inspection; third, inner diameter inspection and height inspection are usually done at different workstations, requiring manual handling of paper tubes, which increases the process flow time and labor intensity.

[0003] Therefore, it is necessary to provide a paper tube detection device and its detection method. Summary of the Invention

[0004] The present invention provides a paper tube detection device and detection method, which effectively solves the problems of low efficiency and low integration of existing paper tube detection devices, making them unsuitable for large-scale detection.

[0005] The technical solution adopted in this invention is: a paper tube detection device, including a frame, a conveyor line disposed on the frame and conveying along the X direction, a stop mechanism disposed on the frame for stopping the paper tubes on the conveyor line, an inner diameter detection mechanism connected to one end of the conveyor line, a height detection mechanism disposed adjacent to the inner diameter detection mechanism, a feeding mechanism adjacent to the height detection mechanism, and a linkage pushing mechanism. The conveyor line is used to provide the paper tubes to be detected, the stop mechanism is used to stop the paper tubes to be detected on the conveyor line, the linkage pushing mechanism is used to transfer the paper tubes between the stop mechanism and the inner diameter detection mechanism to the inner diameter detection mechanism, and to transfer the paper tubes in the inner diameter detection mechanism to the height detection mechanism. The inner diameter detection mechanism is used to detect whether the inner diameter of the paper tube is less than a standard value, and the height detection mechanism is used to detect whether the height of the paper tube is qualified.

[0006] Furthermore: the conveyor line includes a belt drive line mounted on the frame and guardrails mounted on the frame for limiting the movement of the paper tube on both sides; the stop mechanism includes a starting stop assembly mounted on the frame and several interval stop assemblies mounted equidistantly on the frame.

[0007] Furthermore: the starting stop assembly includes two cylinders A symmetrically arranged on both sides of the frame, and two baffles A respectively fixedly arranged at the output ends of the two cylinders A. The opposite side of the baffles A is provided with an arc surface that contacts the outer wall of the paper tube; the interval stop assembly includes a cylinder B arranged on the frame and a roller rotatably arranged at the output end of the cylinder B, the roller rotating around the Z-axis.

[0008] Furthermore: the inner diameter detection mechanism includes a first machine platform mounted on the frame, a clamping assembly mounted on the first machine platform, and an inner diameter detection assembly mounted on the first machine platform. The clamping assembly is used to clamp the paper tube, and the inner diameter detection assembly is used to test the inner diameter of the paper tube clamped by the clamping assembly.

[0009] Furthermore, the clamping assembly includes a dual-axis cylinder extending along the Y-axis direction, two connecting frames respectively fixedly connected to the two output ends of the dual-axis cylinder, and a number of clamping blocks arranged symmetrically on the two connecting frames along the X-axis direction.

[0010] Furthermore: the inner diameter detection assembly includes a first support mounted on the first machine platform, several pressure detection components mounted on the first support, and the pressure detection components include a second linear guide rail vertically mounted on the first support, a second lifting frame slidably mounted on the second linear guide rail, a second cylinder mounted on the first support for driving the second lifting frame to rise and fall, a magnetic reed switch mounted on the first support for detecting whether the second lifting frame has descended to a predetermined position, a second fixed plate mounted on the second lifting frame, several second bolt and nut assemblies, a detection plate slidably raised and lowered by the several second bolt and nut assemblies and the second fixed plate, and a second elastic floating component mounted between the detection plate and the second fixed plate.

[0011] Furthermore: the height detection mechanism includes a No. 3 support mounted on the frame, several pressing detection components mounted on the No. 3 support, the pressing detection components including a No. 3 linear guide rail mounted vertically on the No. 3 support, a No. 3 lifting frame slidably mounted on the No. 3 linear guide rail, a No. 3 cylinder mounted on the No. 3 support for driving the No. 3 support to rise and fall, a grating ruler fixedly mounted on the No. 3 support, a reading head fixedly mounted on the No. 3 lifting frame and cooperating with the grating ruler, a No. 3 fixed plate mounted on the No. 3 lifting frame, several No. 3 bolt and nut assemblies, a pressure plate slidably raised and lowered by the several No. 3 bolt and nut assemblies and the No. 3 fixed plate, and a No. 3 elastic floating component mounted between the No. 3 fixed plate and the pressure plate, the lower end surface of the pressure plate being a flat surface.

[0012] Furthermore: the linkage pushing mechanism includes a linear module set on the frame along the X-axis, a No. 1 plate fixedly set at the output end of the linear module, and two sets of clamping assemblies set on the No. 1 plate and arranged along the X-axis. The clamping assembly includes a No. 4 linear guide rail set on the No. 1 plate along the Y-axis, a slide plate slidably set on the No. 4 linear guide rail, a No. 4 cylinder set on the No. 1 plate for driving the slide plate to slide along the No. 4 linear guide rail, and several protrusions arranged along the X-axis on the slide plate, with a groove formed between adjacent protrusions.

[0013] Furthermore, the feeding mechanism includes a feeding flow line disposed at the end of the height detection mechanism along the X-axis, a receiving box disposed on one side of the feeding flow line, and a pushing cylinder disposed on the other side of the feeding flow line.

[0014] The paper tube inspection method, using the aforementioned paper tube inspection device, includes the following steps: S1, the paper tube to be inspected is placed on the conveyor line and conveyed along the X direction; S2, the stop mechanism stops the paper tube at a predetermined position; S3, the linkage pushing mechanism first transfers the paper tube to the inner diameter inspection mechanism to check whether the inner diameter is less than the standard value, and then transfers the paper tube that has completed the inner diameter inspection to the height inspection mechanism to check whether the height is qualified; S4, finally, the paper tube that has completed all inspections is transferred to the unloading mechanism.

[0015] Beneficial effects of the invention: 1. This application integrates conveying, stopping, inner diameter detection, height detection and unloading into one inspection line. The paper tube is automatically and synchronously transferred between each station through a linkage pushing mechanism. One action can complete the station switching of two paper tubes at the same time. No manual handling or intervention is required. The inspection cycle is fast and suitable for batch inspection.

[0016] 2. The inner diameter detection component adopts the mechanical go / stop principle of "whether the detection disc can be pressed down to the correct position," and works with a magnetic reed switch to output a switching signal to directly determine whether the inner diameter is less than the standard value. This structure does not require complex sensors or algorithms, is low in cost, has a fast detection speed, and the elastic floating component can prevent rigid collisions from damaging the paper tube or detection head.

[0017] 3. The height detection mechanism utilizes a grating ruler in conjunction with an elastic floating component driven by constant air pressure. Zero-point calibration allows the grating ruler reading to directly reflect the height deviation between the paper tube and the standard sample, eliminating the need for complex compensation calculations. This design offers high detection accuracy (down to the micrometer level), while the pressure plate maintains flexible contact with the paper tube being tested, preventing damage to the paper tube's end face.

[0018] 4. The stop mechanism, through the coordinated operation of the starting stop and the interval stop, achieves precise positioning of the paper tube and orderly interval feeding, effectively avoiding material accumulation and jamming, and providing a stable material picking rhythm for the linkage pushing mechanism. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the paper tube detection device provided in the embodiments of this application.

[0020] Figure 2 This is a schematic diagram of the conveyor line and stop mechanism of the paper tube detection device provided in the embodiments of this application.

[0021] Figure 3 This is a schematic diagram of the starting stop assembly of the stop mechanism of the paper tube detection device provided in the embodiments of this application, which stops the paper tube.

[0022] Figure 4 The spacer stop assembly of the stop mechanism of the paper tube detection device provided in the embodiments of this application is integrated with the two paper tubes.

[0023] Figure 5 This is a schematic diagram of the inner diameter detection mechanism of the paper tube detection device provided in the embodiments of this application.

[0024] Figure 6 This is a schematic diagram of one perspective of the inner diameter detection mechanism of the paper tube detection device provided in the embodiments of this application, omitting the first machine.

[0025] Figure 7 This is a schematic diagram from another perspective of the inner diameter detection mechanism of the paper tube detection device provided in the embodiments of this application, omitting the first machine.

[0026] Figure 8 This is a schematic diagram of one perspective of the height detection mechanism of the paper tube detection device provided in an embodiment of this application.

[0027] Figure 9 This is a schematic diagram from another perspective of the height detection mechanism of the paper tube detection device provided in the embodiments of this application.

[0028] Figure 10 This is a schematic diagram of the linkage pushing mechanism of the paper tube detection device provided in the embodiments of this application.

[0029] Figure 11 This is a schematic diagram of the feeding mechanism of the paper tube detection device provided in the embodiments of this application.

[0030] The diagram is labeled as follows: 1. Frame; 2. Conveyor line; 3. Stop mechanism; 4. Inner diameter detection mechanism; 5. Height detection mechanism; 6. Unloading mechanism; 7. Linkage pushing mechanism; 21. Belt drive line; 22. Guardrail; 31. Starting stop assembly; 32. Interval stop assembly; 311. Cylinder A (No. 1); 312. Baffle A (No. 1); 322. Cylinder B (No. 1); 323. Roller; 41. Machine base (No. 1); 43. Clamping assembly; 42. Inner diameter detection assembly; 431. Dual-axis cylinder; 432. Connecting frame; 433. Clamping block; 421. Support (No. 1); 422. Pressing detection piece; 4221. Linear guide rail (No. 2); 4222. Lifting frame (No. 2); 4223. Cylinder (No. 2); 4224. Magnetic reed switch. 4225, Fixed plate No. 2; 4226, Bolt and nut assembly No. 2; 4227, Detection plate; 4228, Elastic floating component No. 2; 51, Support No. 3; 52, Press detection component; 521, Linear guide rail No. 3; 522, Lifting frame No. 3; 523, Cylinder No. 3; 524, Grating ruler; 525, Reading head; 526, Fixed plate No. 3; 527, Bolt and nut assembly No. 3; 528, Pressure plate; 529, Elastic floating component No. 3; 71, Linear module; 72, Plate No. 1; 73, Material clamping assembly; 731, Linear guide rail No. 4; 732, Slide plate; 733, Cylinder No. 4; 734, Raised strip; 61, Material unloading line; 62, Material receiving box; 63, Material pushing cylinder; 100, Paper tube. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 As shown, the first embodiment provided in this application is a paper tube detection device, the structure of which includes a frame 1, a conveyor line 2 disposed on the frame 1 and conveyed along the X direction, a stop mechanism 3 disposed on the frame 1 for stopping the paper tubes 100 on the conveyor line 2, an inner diameter detection mechanism 4 connected to one end of the conveyor line 2, a height detection mechanism 5 disposed adjacent to the inner diameter detection mechanism 4, a feeding mechanism 6 adjacent to the height detection mechanism 5, and a linkage pushing mechanism 7. The stop mechanism 3 is used to stop the paper tubes 100 to be detected on the conveyor line 2, the linkage pushing mechanism 7 is used to transfer the paper tubes 100 between the stop mechanism 3 and the inner diameter detection mechanism 4 to the inner diameter detection mechanism 4, and to transfer the paper tubes 100 in the inner diameter detection mechanism 4 to the height detection mechanism 5. The inner diameter detection mechanism 4 is used to detect whether the inner diameter of the paper tube 100 is less than a standard value, and the height detection mechanism 5 is used to detect whether the height of the paper tube 100 is qualified.

[0033] In actual use, the paper tube 100 to be tested is placed on the conveyor line 2 and conveyed along the X direction. The stop mechanism 3 stops the paper tube 100 at a predetermined position; the linkage pushing mechanism 7 first transfers the paper tube 100 to the inner diameter detection mechanism 4 to detect whether the inner diameter is less than the standard value, and then transfers the paper tube 100 with the inner diameter detected to the height detection mechanism 5 to detect whether the height is qualified; finally, the paper tube 100 with all the tests completed is transferred to the unloading mechanism 6 to realize the automatic assembly line detection of the inner diameter and height of the paper tube 100.

[0034] In the above design, conveying, stopping, inner diameter detection, height detection, and unloading are integrated into one detection line, and the paper tube 100 is automatically transferred between workstations through the linkage pushing mechanism 7. No manual handling is required, the detection efficiency is high, and the inner diameter and height are continuously completed on the same equipment. The equipment occupies a small area and has a high degree of automation.

[0035] Specifically: such as Figure 2 As shown, the conveyor line 2 includes a belt drive line 21 mounted on the frame 1 and guardrails 22 mounted on the frame 1 for limiting the two sides of the paper tube 100; the stop mechanism 3 includes a starting stop assembly 31 mounted on the frame 1 and several interval stop assemblies 32 equidistantly mounted on the frame 1.

[0036] In actual use, the conveyor line 2 uses a belt drive line 21 to drive the paper tube 100 to move. The guardrail 22 on the frame 1 limits the paper tube 100 on both sides to prevent the paper tube 100 from tipping over or shifting during the conveying process. The starting stop assembly 31 is used to isolate the paper tube 100 to be transferred by the linkage pushing mechanism 7 from the paper tube 100 to be fed later. The interval stop assembly 32 is used to stop the paper tube 100 to be rotated by the linkage pushing mechanism 7 one by one or at intervals at the predetermined work position, so as to facilitate the transfer of the paper tube 100 by the linkage pushing mechanism 7.

[0037] In the above design, the structural design and specific implementation of the conveyor line 2 facilitate the smooth conveying of the paper tube 100, preventing the paper tube 100 from rolling or tilting. The structural design and specific implementation of the stop mechanism 3, which combines the starting stop and the interval stop, can block the conveying of the paper tube 100 of the feeding mechanism along the conveyor line 2, and can also equidistantly separate several paper tubes 100 between the inner diameter detection mechanism 4 and the starting stop assembly 31, facilitating the transfer mechanism to transfer the paper tubes 100 between the starting stop assembly 31 and the inner diameter detection mechanism 4.

[0038] Specifically: such as Figure 3 and Figure 4As shown, the starting stop assembly 31 includes two cylinders A311 symmetrically arranged on both sides of the frame 1, and two baffles A312 respectively fixedly arranged at the output ends of the two cylinders A311. The baffles A312 have an arc surface on the opposite side that contacts the outer wall of the paper tube 100. The interval stop assembly 32 includes a cylinder B322 arranged on the frame 1 and a roller 323 rotatably arranged at the output end of the cylinder B322. The roller 323 rotates around the Z-axis.

[0039] In actual use, in the starting stop assembly 31, two symmetrical cylinders A311 drive the arc-shaped baffle A312 to move towards each other, with the arc surface fitting against the outer wall of the paper tube 100, clamping or stopping the paper tube 100. In the interval stop assembly 32, cylinder B322 drives the roller 323 to extend, and the roller 323 rotates around the Z-axis, causing the roller 323 to roll into contact with the outer walls of two adjacent paper tubes 100, thereby achieving the interval arrangement of adjacent paper tubes 100. After the linkage pushing assembly completes the transfer and alignment of several paper tubes 100 arranged at intervals, cylinder B322 drives the roller 323 to retract. Then, the linkage pushing mechanism 7 conveys the paper tubes 100 arranged at intervals to the inner diameter detection mechanism 4. Then, cylinder A311 of the starting stop assembly 31 drives the baffle A312 to retract, releasing the subsequent incoming paper tubes 100.

[0040] In the above design, the structural design and specific implementation of the starting stop component 31 and the interval stop component 32 facilitate the stopping and interval arrangement of the paper tube 100.

[0041] Specifically: such as Figure 5 As shown, the inner diameter detection mechanism 4 includes a first machine base 41 mounted on the frame 1, a clamping assembly 43 mounted on the first machine base 41, and an inner diameter detection assembly 42 mounted on the first machine base 41. The clamping assembly 43 is used to clamp the paper tube 100, and the inner diameter detection assembly 42 is used to test the inner diameter of the paper tube 100 clamped by the clamping assembly 43.

[0042] In actual use, after the paper tube 100 is transferred to the first machine 41, the clamping assembly 43 clamps and fixes the paper tube 100, and then the inner diameter detection assembly 42 detects the inner diameter of the paper tube 100. After the detection is completed, the inner diameter detection assembly 42 first resets to the position before the detection, and then the clamping assembly 43 releases its grip on the paper tube 100.

[0043] In the above design, the structural design and specific implementation of the inner diameter detection mechanism 4 facilitate the detection of the inner diameter while keeping the paper tube 100 stable.

[0044] Specifically: such as Figure 6As shown, the clamping assembly 43 includes a dual-axis cylinder 431 extending along the Y-axis direction, two connecting frames 432 respectively fixedly connected to the two output ends of the dual-axis cylinder 431, and a plurality of clamping blocks 433 arranged along the X-axis direction and symmetrically disposed on the two connecting frames 432.

[0045] In actual use, when the paper tube 100 moves to the inner diameter detection position, the two output ends of the dual-axis cylinder 431 extend simultaneously, driving the connecting frame 432 and the multiple clamping blocks 433 on the connecting frame 432 to move towards each other, clamping the paper tube 100 from both sides towards the middle. When it is necessary to release the paper tube 100, the two output ends of the dual-axis cylinder 431 retract simultaneously, causing the clamping blocks 433 to disengage from the paper tube 100.

[0046] In the above design, the structural design and specific implementation of the clamping component 43 can use the dual-axis cylinder 431 to synchronously drive the two connecting frames 432, ensuring that the clamping force of the clamping block 433 on the paper tube 100 is uniform and preventing the paper tube 100 from being eccentric or tilted; the multiple clamping blocks 433 are arranged along the X-axis, which can adapt to the clamping requirements of paper tubes 100 of different lengths, and the clamping is stable, so that the paper tube 100 does not move when the inner diameter is detected.

[0047] Specifically: such as Figure 6 and Figure 7 As shown, the inner diameter detection component 42 includes a first support 421 mounted on a first machine base 41, and several pressing detection components 422 mounted on the first support 421. The pressing detection component 422 includes a second linear guide rail 4221 vertically mounted on the first support 421, a second lifting frame 4222 slidably mounted on the second linear guide rail 4221, a second cylinder 4223 mounted on the first support 421 for driving the second lifting frame 4222 to rise and fall, a reed switch 4224 mounted on the first support 421 for detecting whether the second lifting frame 4222 has descended to a predetermined position, a second fixed plate 4225 mounted on the second lifting frame 4222, several second bolt and nut assemblies 4226, a detection plate 4227 slidably connected to the second fixed plate 4225 via several second bolt and nut assemblies 4226, and a second elastic floating component 4228 mounted between the detection plate 4227 and the second fixed plate 4225.

[0048] It should be noted that the second bolt and nut assembly 4226 includes a bolt fixedly connected to the detection plate 4227, two nuts threadedly connected to the bolt, and the second fixing plate 4225 is provided with a through hole, through which it slides with the bolt. The two nuts are located above and below the through hole, respectively.

[0049] During actual inner diameter testing, cylinder number one drives lifting frame number two 4222 to descend along linear guide rail number two 4221, causing the testing disc 4227 to press down accordingly. When the lower end of the testing disc 4227 enters the inner hole of paper tube 100, if the inner diameter is qualified (greater than or equal to the standard value), the testing disc 4227 enters smoothly, lifting frame number two 4222 descends to the predetermined position, and reed switch 4224 is triggered. If the inner diameter is too small, the testing disc 4227 is stuck and cannot enter, lifting frame number two 4222 cannot reach the predetermined position, reed switch 4224 is not triggered, thus causing the PLC control system to trigger an alarm and determine that the inner diameter is unqualified. Elastic floating element number two 4228 provides buffering to prevent the testing disc 4227 from rigidly colliding with paper tube 100.

[0050] In the above design, the structure and specific implementation of the inner diameter detection component 42 adopt the mechanical go-stop principle of "whether it can be pressed down to the position" to determine whether the inner diameter is less than the standard value. The structure is simple, the cost is low, and the detection speed is fast. The elastic floating part can avoid damage to the paper tube 100 or the detection head by hard impact. The magnetic reed switch 4224 outputs a switching signal, which makes it easy for the PLC to directly read the result.

[0051] Specifically: such as Figure 8 and Figure 9 As shown, the height detection mechanism 5 includes a No. 3 support 51 mounted on the frame 1, and several pressing detection components 52 mounted on the No. 3 support 51. The pressing detection component 52 includes a No. 3 linear guide rail 521 vertically mounted on the No. 3 support 51, a No. 3 lifting frame 522 slidably mounted on the No. 3 linear guide rail 521, a No. 3 cylinder 523 mounted on the No. 3 support 51 for driving the No. 3 support 51 to rise and fall, a grating ruler 524 fixedly mounted on the No. 3 support 51, a reading head 525 fixedly mounted on the No. 3 lifting frame 522 and cooperating with the grating ruler 524, a No. 3 fixed plate 526 mounted on the No. 3 lifting frame 522, several No. 3 bolt and nut assemblies 527, a pressure plate 528 slidably raised and lowered connected to the No. 3 fixed plate 526 via several No. 3 bolt and nut assemblies 527, and a No. 3 elastic floating component 529 mounted between the No. 3 fixed plate 526 and the pressure plate 528. The lower end surface of the pressure plate 528 is a flat surface.

[0052] It should be noted that the zero point of the grating is the position of the pressure plate 528 when it is pressed down to the standard paper tube 100 height. The third cylinder 523 drives the third lifting frame 522 to descend along the third linear guide rail 521, and the flat surface of the lower end of the pressure plate 528 contacts the upper end surface of the standard paper tube 100. Under constant air pressure, the third elastic floating element 529 generates a fixed compression amount. At this time, the system records the position of the reading head 525 of the grating ruler 524 and sets it as the measurement zero point (i.e., the corresponding height of the standard paper tube 100). It should be noted that the third bolt and nut assembly 527 includes a bolt fixedly connected to the pressure plate 528, two nuts threadedly connected to the bolt, and a third fixing plate 526 with a through hole through which the bolt slides. The two nuts are located above and below the through hole, respectively.

[0053] During actual testing, cylinder 523 drives lifting frame 522 to descend with the same air pressure. After pressure plate 528 contacts the upper surface of the paper tube 100 being tested, the compression of elastic floating component 529 is exactly the same as during calibration due to the constant cylinder thrust. Reading head 525 moves synchronously with lifting frame 522, and the displacement change output by grating ruler 524 directly reflects the position difference of lifting frame 522 relative to zero. This difference is precisely equal to the height deviation between the tested paper tube 100 and the standard paper tube 100. The PLC control system compares this deviation value with the preset tolerance range to directly determine whether the height of paper tube 100 is qualified, without needing to subtract the compression of the elastic floating component.

[0054] In the above design, the structural design and specific implementation of the height detection mechanism 5 incorporates the compression amount of the No. 3 elastic floating member 529 under standard conditions into the benchmark through zero-point calibration, and uses constant air pressure to ensure that the compression amount remains unchanged during the measurement process, so that the reading of the grating ruler 524 directly corresponds to the height deviation, without the need for complex compensation calculation, resulting in fast detection speed and high accuracy. In addition, the pressure plate 528 is in flexible contact with the paper tube 100 being measured, avoiding damage to the surface of the workpiece.

[0055] Specifically: such as Figure 10 As shown, the linkage pushing mechanism 7 includes a linear module 71 arranged on the frame 1 along the X-axis, a first plate 72 fixedly arranged at the output end of the linear module 71, and two sets of clamping assemblies 73 arranged on the first plate 72 and along the X-axis. The clamping assembly 73 includes a fourth linear guide rail 731 arranged on the first plate 72 along the Y-axis, a slide plate 732 slidably arranged on the fourth linear guide rail 731, a fourth cylinder 733 arranged on the first plate 72 for driving the slide plate 732 to slide along the fourth linear guide rail 731, and several protrusions 734 arranged along the X-axis on the slide plate 732, with a groove formed between adjacent protrusions 734.

[0056] It should be noted that the inner diameter detection mechanism 4 and the height detection mechanism 5 are equipped with guardrails 22 for limiting the two ends of the paper tube 100, and the guardrails 22 form a track for guiding the paper tube 100.

[0057] In actual use, when it is necessary to transfer the paper tube 100 from the conveyor line 2 to the inner diameter detection mechanism 4 and from the inner diameter detection mechanism 4 to the unloading mechanism 6, the linear module 71 drives the first plate 72 to move along the X-axis direction, so that the first plate 72 is equipped with two sets of clamping components 73 corresponding to the paper tube 100 to be transferred on the conveyor line 2 and the paper tube 100 on the inner diameter detection mechanism 4, respectively. Then, each set of clamping components 73, including the fourth cylinder 733, drives the corresponding slide plate 732 to move along the fourth linear guide rail 731 so that a single paper tube 100 is located in a single slot. Then, the linear module 71 drives the slide plate 732 to move along the conveying direction of the conveyor line 2, so that the paper tubes 100 on the conveyor line 2 are transferred to the inner diameter detection mechanism 4 by the two sets of clamping components 73 respectively, and the paper tubes 100 in the inner diameter detection mechanism 4 are transferred to the height detection mechanism 5. The paper tubes 100 in the original height detection mechanism 5 are pushed to the side of the feeding mechanism 6 by the newly delivered paper tubes 100 and enter the feeding mechanism 6.

[0058] In the above design, the structural design and specific implementation of the linkage pushing mechanism 7 enable the two sets of clamping components 73 to operate simultaneously, and the synchronous transfer of two paper tubes 100 can be completed in one stroke of the linear module 71, which is highly efficient; the groove structure formed by the protrusion 734 clamps the bottom of the paper tube 100, making it less likely for the paper tube 100 to tip over during pushing; the No. 4 cylinder 733 controls the extension and retraction of the protrusion 734, which can selectively grab or release the paper tube 100 without affecting the conveyor line 2, making the operation flexible.

[0059] Specifically: such as Figure 11 As shown, the feeding mechanism 6 includes a feeding flow line 61 arranged along the X-axis at the end of the height detection mechanism 5, a receiving box 62 arranged on one side of the feeding flow line 61, and a pushing cylinder 63 arranged on the other side of the feeding flow line 61.

[0060] In actual use, the paper tube 100 in the height detection mechanism 5 is pushed from the inner diameter detection mechanism 4 to the unloading flow line 61 by the linkage pushing mechanism 7, and then moves along the unloading flow line 61 to the corresponding position of the pusher cylinder 63. Subsequently, the pusher mechanism pushes the paper tube 100 to the receiving box 62.

[0061] In the above design, the structural design and specific implementation of the height detection mechanism 5 can achieve automatic material collection by using a cylinder to push the material, without the need for manual removal of parts; The second embodiment provided in this application is a paper tube detection method using the aforementioned paper tube detection device, comprising the following steps: S1, the paper tube 100 to be detected is placed on the conveyor line 2 and conveyed along the X direction; S2, the stop mechanism 3 stops the paper tube 100 at a predetermined position; S3, the linkage pushing mechanism 7 first transfers the paper tube 100 to the inner diameter detection mechanism 4 to detect whether the inner diameter is less than the standard value, and then transfers the paper tube 100 that has completed the inner diameter detection to the height detection mechanism 5 to detect whether the height is qualified; S4, finally, the paper tube 100 that has completed all the detections is transferred to the unloading mechanism 6.

[0062] The above design enables automated detection of paper tube 100, improving detection efficiency.

[0063] In further detail, it should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paper tube detection device, characterized in that: The system includes a frame (1), a conveyor line (2) mounted on the frame (1) and conveying along the X direction, a stop mechanism (3) mounted on the frame (1) for stopping the paper tubes (100) on the conveyor line (2), an inner diameter detection mechanism (4) connected to one end of the conveyor line (2), a height detection mechanism (5) adjacent to the inner diameter detection mechanism (4), and a feeding mechanism (6) adjacent to the height detection mechanism (5). It also includes a linkage pushing mechanism (7). The conveyor line (2) is used to provide the paper tubes (100) to be tested. The blocking mechanism (3) is used to stop the paper tube (100) to be tested on the conveyor line (2). The linkage pushing mechanism (7) is used to transfer the paper tube (100) between the blocking mechanism (3) and the inner diameter detection mechanism (4) to the inner diameter detection mechanism (4) and to transfer the paper tube (100) in the inner diameter detection mechanism (4) to the height detection mechanism (5). The inner diameter detection mechanism (4) is used to detect whether the inner diameter of the paper tube (100) is less than the standard value. The height detection mechanism (5) is used to detect whether the height of the paper tube (100) is qualified.

2. The paper tube detection device according to claim 1, characterized in that: The conveyor line (2) includes a belt drive line (21) set on the frame (1) and guardrails (22) set on the frame (1) for limiting the two sides of the paper tube (100); the stop mechanism (3) includes a starting stop assembly (31) set on the frame (1) and several interval stop assemblies (32) set equidistantly on the frame (1).

3. The paper tube detection device according to claim 2, characterized in that: The starting stop assembly (31) includes two cylinders A (311) symmetrically arranged on both sides of the frame (1) and two baffles A (312) respectively fixedly arranged at the output ends of the two cylinders A (311). The baffles A (312) have an arc surface on the opposite side that contacts the outer wall of the paper tube (100). The interval stop assembly (32) includes a cylinder B (322) arranged on the frame (1) and a roller (323) rotatably arranged at the output end of the cylinder B (322). The roller (323) rotates around the Z-axis.

4. The paper tube detection device according to claim 1, characterized in that: The inner diameter detection mechanism (4) includes a first machine base (41) set on the frame (1), a clamping assembly (43) set on the first machine base (41), and an inner diameter detection assembly (42) set on the first machine base (41). The clamping assembly (43) is used to clamp the paper tube (100), and the inner diameter detection assembly (42) is used to test the inner diameter of the paper tube (100) clamped by the clamping assembly (43).

5. The paper tube detection device according to claim 4, characterized in that: The clamping assembly (43) includes a dual-axis cylinder (431) extending along the Y-axis direction, two connecting frames (432) respectively fixedly connected to the two output ends of the dual-axis cylinder (431), and a plurality of clamping blocks (433) arranged along the X-axis direction and symmetrically disposed on the two connecting frames (432).

6. The paper tube detection device according to claim 5, characterized in that: The inner diameter detection assembly (42) includes a first support (421) mounted on a first machine base (41) and several pressure detection components (422) mounted on the first support (421). Each pressure detection component (422) includes a second linear guide rail (4221) vertically mounted on the first support (421), a second lifting frame (4222) slidably mounted on the second linear guide rail (4221), and a second cylinder (4223) mounted on the first support (421) for driving the second lifting frame (4222) to rise and fall. A reed switch (4224) is placed on the first support (421) to detect whether the second lifting frame (4222) has descended to the predetermined position; a second fixed plate (4225) is set on the second lifting frame (4222); several second bolt and nut assemblies (4226); a detection plate (4227) is slidably and vertically connected to the second fixed plate (4225) through several second bolt and nut assemblies (4226); and a second elastic floating member (4228) is set between the detection plate (4227) and the second fixed plate (4225).

7. The paper tube detection device according to claim 1, characterized in that: The height detection mechanism (5) includes a No. 3 support (51) mounted on the frame (1) and several pressing detection components (52) mounted on the No. 3 support (51). The pressing detection components (52) include a No. 3 linear guide rail (521) vertically mounted on the No. 3 support (51), a No. 3 lifting frame (522) slidably mounted on the No. 3 linear guide rail (521), a No. 3 cylinder (523) mounted on the No. 3 support (51) for driving the No. 3 support (51) to rise and fall, and a grating ruler fixedly mounted on the No. 3 support (51). (524), a reading head (525) fixedly mounted on the third lifting frame (522) and cooperating with the grating ruler (524), a third fixed plate (526) mounted on the third lifting frame (522), several third bolt and nut assemblies (527), a pressure plate (528) slidably lifted and lowered by several third bolt and nut assemblies (527) and the third fixed plate (526), ​​and a third elastic floating member (529) mounted between the third fixed plate (526) and the pressure plate (528), wherein the lower end surface of the pressure plate (528) is a flat surface.

8. The paper tube detection device according to claim 2, characterized in that: The linkage pushing mechanism (7) includes a linear module (71) arranged on the frame (1) along the X-axis direction, a first plate (72) fixedly arranged at the output end of the linear module (71), and two sets of clamping assemblies (73) arranged on the first plate (72) and arranged along the X-axis. The clamping assembly (73) includes a fourth linear guide rail (731) arranged on the first plate (72) along the Y-axis direction, a slide plate (732) slidably arranged on the fourth linear guide rail (731), a fourth cylinder (733) arranged on the first plate (72) for driving the slide plate (732) to slide along the fourth linear guide rail (731), and several protrusions (734) arranged along the X-axis on the slide plate (732). A groove is formed between adjacent protrusions (734).

9. The paper tube detection device according to claim 1, characterized in that: The feeding mechanism (6) includes a feeding flow line (61) arranged along the X-axis at the end of the height detection mechanism (5), a receiving box (62) arranged on one side of the feeding flow line (61), and a pushing cylinder (63) arranged on the other side of the feeding flow line (61).

10. A paper tube detection method, employing the paper tube detection device according to any one of claims 1 to 9, characterized in that: The process includes the following steps: S1, the paper tube (100) to be tested is placed on the conveyor line (2) and conveyed along the X direction; S2, the stop mechanism (3) stops the paper tube (100) at a predetermined position; S3, the linkage pushing mechanism (7) first transfers the paper tube (100) to the inner diameter detection mechanism (4) to detect whether the inner diameter is less than the standard value, and then transfers the paper tube (100) that has completed the inner diameter detection to the height detection mechanism (5) to detect whether the height is qualified; S4, finally, the paper tube (100) that has completed all the tests is transferred to the unloading mechanism (6).

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