A double-speed chain transmission device, roller line scanning detection system and detection method

Abstract

The present invention discloses a double-speed chain transmission device, a roller line scan detection system and a detection method, and belongs to the field of mechanical transmission and roller surface detection. The double-speed chain transmission device of the present invention includes a double-speed chain group and a sprocket. The roller in the double-speed chain group is installed on the roller pin shaft, and the double-speed chain group cooperates with the sprocket; it also includes a self-rotation drive mechanism, which includes a synchronous belt and a pulley arranged on the roller pin shaft. The pulley and the roller are relatively fixed. When the synchronous belt is running, the roller is driven to rotate by the pulley. Based on this device, the roller line scan detection system of the present invention can rotate the roller evenly on the roller surface, so that the surface defects of the roller can be detected by a line scan camera, which is helpful to improve product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission and roller surface detection, and more specifically, to a double-speed chain transmission device, a roller line scanning detection system and a detection method. Background Art

[0002] There are many methods for detecting surface defects of cylindrical rollers, such as magnetic particle detection, eddy current detection, ultrasonic flaw detection, etc., but these methods are mainly suitable for detecting internal crack defects, etc. For the surface defects of rollers, they are currently mainly detected by area array cameras.

[0003] For example, a bearing cylindrical roller full-surface detection mechanism (application number: 201610987594.9) is disclosed. This patent solution combines a double-speed chain device and adds a pulley to synchronously drive the roller to rotate so that the roller surface can be fully expanded.

[0004] The double-speed chain used mainly includes a chain and a sprocket. The roller in the chain can rotate relative to the pin. During the sprocket drive process, the roller moves with the chain. In the traditional solution, when the roller moves with the chain, the friction between the roller and the support plate causes the roller to rotate at the same time. However, a sufficient distance is required to fully expand the roller surface. Once the chain stops moving, the roller will not be able to rotate.

[0005] In the above patent solution, in order to shorten the running distance and fully expand the roller surface, a transmission belt is added, and the running of the belt provides friction to the roller surface to drive the roller to rotate. At this time, the area array camera can fully capture the surface appearance of the roller.

[0006] However, when using an area array camera, its accuracy is relatively low. Line scan cameras have better advantages over area array cameras and have higher accuracy. However, in combination with existing technical solutions, including the above-mentioned patent solution, if a line scan camera is used, there will be higher requirements for the rotation of the roller, requiring it to rotate at a uniform speed. If the friction force is too large when the belt is used to drive the roller to rotate, the surface of the roller will be damaged, which may cause the supported roller to be placed unevenly; if the friction force is small, slippage may occur, making it difficult to ensure the uniform rotation of the roller, which makes it difficult to effectively use the line scan camera.

[0007] Moreover, in the current solution, the use of line scan cameras may lead to missed detections, and the effect may be worse than that of area array cameras. Summary of the invention

[0008] 1. Technical problem to be solved by the invention

[0009] The purpose of the present invention is to overcome the problem that the roller transmission mechanism in the prior art affects the detection accuracy, and to provide a double-speed chain transmission device. In the double-speed chain transmission device of the present invention, the synchronous belt cooperates with the pulley on the roller pin shaft, and the roller surface does not bear the driving force, thereby improving the uniformity of the roller rotation speed.

[0010] The present invention also provides a roller line scan detection system, in which the roller can rotate evenly on the roller surface, so that the roller surface defects can be detected using a line scan camera, which helps to improve product quality.

[0011] The present invention also provides a roller line scanning detection method, which utilizes the intermittent motion of the double-speed chain group and the self-rotation drive of the roller, so that it can better cooperate with the line scanning detection camera to achieve a better detection effect.

[0012] 2. Technical solution

[0013] In order to achieve the above object, the technical solution provided by the present invention is:

[0014] A double-speed chain transmission device of the present invention includes a double-speed chain group and a sprocket. The roller in the double-speed chain group is installed on the roller pin shaft, and the double-speed chain group cooperates with the sprocket. It is characterized in that it also includes a self-rotation drive mechanism, which includes a synchronous belt and a pulley arranged on the roller pin shaft. The pulley and the roller are relatively fixed. When the synchronous belt runs, the roller is driven to rotate via the pulley.

[0015] As a further improvement of the present invention, the synchronous belt is a toothed synchronous belt and is supported by a driving pulley and a driven pulley in the self-rotating drive mechanism, and the pulley is a toothed wheel that cooperates with the toothed synchronous belt.

[0016] As a further improvement of the present invention, a longitudinal support seat is provided between the driving pulley and the driven pulley in the self-rotating drive mechanism for supporting and / or guiding the synchronous belt.

[0017] As a further improvement of the present invention, a longitudinal adjustment seat is arranged below the longitudinal support seat, and a longitudinal adjustment bolt is arranged in cooperation with the longitudinal adjustment seat, and the height position of the longitudinal support seat is adjusted by the longitudinal adjustment bolt.

[0018] As a further improvement of the present invention, the top of the longitudinal adjustment seat is a support surface, and raised guide plates are formed on both sides of the support surface, and the synchronous belt is located between the guide plates.

[0019] As a further improvement of the present invention, a transverse tensioning mechanism is provided on one side of the driven pulley in the self-rotating drive mechanism, which includes a transverse slide and a transverse adjustment seat. The driven pulley is installed on the transverse slide. A transverse adjustment bolt is provided on the transverse adjustment seat. The driven pulley is driven to move laterally by the transverse adjustment bolt to adjust the distance between the driven pulley and the driving pulley.

[0020] As a further improvement of the present invention, both ends of the roller pin are rotatably connected with sleeves, and the driving force of the sprocket acts on the sleeves.

[0021] As a further improvement of the present invention, the sleeve is a needle roller guide bearing.

[0022] As a further improvement of the present invention, the pulley and the roller are both fixedly connected to the roller pin.

[0023] As a further improvement of the present invention, the roller is connected to the roller pin through a bearing, and the pulley is fixed on one side of the roller;

[0024] Or: the pulley is located at one end of the roller, and the two form an integral structure, and bearings are arranged at both ends of the integral structure.

[0025] The roller line scanning detection system of the present invention adopts the above-mentioned double-speed chain transmission device for transmission, and also includes a line scanning detection device. The line scanning detection camera in the line scanning detection device is correspondingly arranged above the self-rotation drive mechanism. When the roller self-rotates to drive the roller to rotate, the line scanning detection camera continuously takes pictures of the roller for detection.

[0026] As a further improvement of the present invention, there are at least two line scan detection cameras, one of which is used to detect defects on the outer cylindrical surface of the roller, and the other is used to detect defects on the chamfer or side of the roller.

[0027] As a further improvement of the present invention, the two line scan inspection cameras inspect one roller at the same time, or are arranged at two workstations to inspect the same roller successively.

[0028] As a further improvement of the present invention, when a synchronous belt structure is adopted, the synchronous belt cooperates with the pulleys on at least three roller pins at the same time to form at least one buffer station and at least one detection station, and the roller enters the detection station through the buffer station.

[0029] A roller line scanning detection method of the present invention, the equipment used includes a double-speed chain transmission device and a line scanning detection device, and the specific detection includes the following steps:

[0030] Step 1, start the device, use the double-speed chain transmission device to perform roller transmission, the roller is supported between two rollers of the double-speed chain transmission device, and moves intermittently with the double-speed chain group;

[0031] The self-rotation drive mechanism in the double-speed chain transmission device cooperates with the double-speed chain group to form a detection station section; after starting, in the detection station section, the self-rotation drive mechanism drives the roller to rotate continuously;

[0032] Step 2, the roller is transported to the inspection station through the movement of the double-speed chain group, and the inspection station is a station in the inspection station section area. In the inspection station, the roller drives the transported roller to rotate;

[0033] Step 3: The double-speed chain group stops moving, the self-rotation drive mechanism drives the roller to rotate, and the line scanning detection camera in the line scanning detection device continuously takes pictures of the rollers at the detection station;

[0034] Step 4: The chain group moves at double the speed, and the next roller to be inspected is transferred to the inspection station for inspection in the order of steps 2 and 3.

[0035] Furthermore, step 2 includes a step of buffering and accelerating the roller; a buffer station is arranged at the beginning of the detection station section, and the roller enters the detection station after passing through the buffer station.

[0036] Furthermore, step 3 includes the step of detecting surface defects at different positions of the roller; there are multiple inspection stations in the inspection station section, and the inspection cameras corresponding to different inspection stations are set at different angles, which are used for defect detection on the outer cylindrical surface, side surface or chamfered surface of the corresponding roller.

[0037] 3. Beneficial effects

[0038] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0039] (1) The double-speed chain transmission device of the present invention has a pulley on the roller pin shaft, and the pulley cooperates with the synchronous belt to avoid direct contact between the synchronous belt and the roller during use. There is no need to consider the problem of damage to the roller surface, and the uniformity of the roller rotation can be fully guaranteed.

[0040] (2) In the double-speed chain transmission device of the present invention, the synchronous belt is a toothed synchronous belt, and the pulley is a toothed pulley. The two are meshed with each other. The active pulley is driven by a motor to achieve precise control of the rotation speed and number of revolutions of the roller. For the objects transmitted on the roller, its transmission speed can be increased or decreased, thereby improving the controllability of the transmitted items.

[0041] (3) The roller line scan detection system of the present invention places the roller between two rollers. When the rollers rotate, the rollers are driven synchronously. By controlling the rollers, the rotation speed of the rollers can be accurately controlled, so that the line scan camera can be better cooperated for detection, which helps to improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a double-speed chain transmission device;

[0043] Figure 2 It is a schematic diagram of the coordination between the double-speed chain set and the sprocket;

[0044] Figure 3 It is a schematic diagram of the structure of a double-row sprocket;

[0045] Figure 4 It is a schematic diagram of the overall structure of the rotation drive mechanism;

[0046] Figure 5 It is a structural schematic diagram of the longitudinal support seat;

[0047] Figure 6 It is a structural schematic diagram of the chain link;

[0048] Figure 7 Schematic diagram of the chain plate distribution structure of the chain link;

[0049] Figure 8 is a cross-sectional schematic diagram of the connecting structure of the roller;

[0050] Fig. 9 It is a structural schematic diagram of the roller line scanning detection system;

[0051] Fig.10 This is a schematic diagram of the roller line scanning detection process.

[0052] Explanation of the numbers in the schematic diagram: 1. Double-speed chain set; 11. Roller; 12. Pulley; 13. Sleeve; 14. Roller pin; 15. Inner chain plate; 16. Gasket; 17. Roller bearing; 18. Locating pin; 19. Outer chain plate; 2. Sprocket; 3. Self-rotation drive mechanism; 31. Fixed frame; 32. Self-rotation drive motor; 33. Driving pulley; 34. Driven pulley; 35. Synchronous belt; 361. Transverse slide seat; 362. Transverse adjustment seat; 363. Transverse adjustment bolt; 371. Longitudinal support seat; 3711. Support table; 3712. Connecting seat; 3713. Support surface; 3714. Guide plate; 372. Longitudinal adjustment seat; 373. Longitudinal adjustment bolt; 4. Roller; 5. Line scan detection camera. DETAILED DESCRIPTION

[0053] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0054] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0055] Example

[0056] Combination Figure 1 , Figure 2 The invention discloses a double-speed chain transmission device, comprising a double-speed chain set 1, a sprocket 2 and a self-rotation drive mechanism 3. The roller 11 in the double-speed chain set 1 is mounted on a roller pin 14, and the double-speed chain set 1 cooperates with the sprocket 2. The double-speed chain set 1 is supported by two sprockets 2, one of which is a driving wheel and can be directly driven by a motor; the other is a driven wheel, and the double-speed chain set 1 cooperates with the two sprockets. When the sprockets rotate, the double-speed chain set 1 starts to operate.

[0057] The double-speed chain set 1 is composed of chain links connected in sequence, each chain link includes two rollers 11, and the rollers 11 are installed on roller pins 14.

[0058] Combination Figure 3 The sprocket 2 is a double-row sprocket, and the roller 11 is arranged between the gear teeth on both sides. The sprocket 2 provides power to the roller pin 14 to drive the speed chain group 1 to operate.

[0059] In conventional solutions, the roller 4 is usually placed between two rollers 11, and friction is provided from the lower surface of the roller 11 to drive the roller 11 to rotate, thereby causing the roller 4 to rotate.

[0060] In this embodiment, the roller is driven to rotate by a self-rotation driving mechanism 3, which includes a synchronous belt 35 and a pulley 12 arranged on a roller pin 14. The pulley 12 is relatively fixed to the roller 11. When the synchronous belt 35 runs, the roller 11 is driven to rotate via the pulley 12.

[0061] Specifically, there are a driving pulley 33 and a driven pulley 34 in the self-rotation drive mechanism 3, and the synchronous belt 35 is supported by the driving pulley 33 and the driven pulley 34. Both the driving pulley 33 and the driven pulley 34 are installed on a fixed frame 31, and the fixed frame 31 is supported by an external bracket so that it is located between the two sprockets and enables the installed synchronous belt 35 to cooperate with the pulley 12. As for the specific installation form, there is no restriction.

[0062] The driving pulley 33 can be driven by the self-rotating driving motor 32. The rotating shaft of the self-rotating driving motor 32 can be directly connected to the mounting shaft of the driving pulley 33, or can be connected through a speed reducer. The self-rotating driving motor 32 can be a servo motor or a stepping motor.

[0063] exist Figure 1 In the illustrated embodiment, the self-rotation driving motor 32 may be mounted on the fixing frame 31 and located on a side opposite to the driving pulley 33 .

[0064] As for the synchronous belt 35 adopted, it can adopt common transmission belt, and the belt pulley 12 and the synchronous belt 35 are driven by friction. In order to improve the transmission effect, the surface of the belt pulley 12 can be roughened so that the two have better cooperation.

[0065] In this embodiment, a pulley is provided on the roller pin shaft, and the pulley is used in conjunction with the synchronous belt to avoid direct contact between the synchronous belt and the roller during use. There is no need to consider damage to the roller surface, and the uniformity of the roller rotation can be fully guaranteed.

[0066] Combination Figure 4 As another embodiment, the synchronous belt 35 is a toothed synchronous belt. Figure 4 The middle toothed synchronous belt is supported by the driving pulley 33 and the driven pulley 34, so that the upper surface of the synchronous belt 35 is horizontal and parallel to the moving surface of the roller, and the outer side of the synchronous belt 35 has teeth evenly spaced. Correspondingly, the pulley is a toothed wheel that cooperates with the synchronous belt 35, and the two can mesh with each other for transmission. Compared with ordinary flat conveyor belts, the toothed synchronous belt structure relies on tooth meshing for driving, there is no slippage, and the uniformity and stability of the transmission speed are easier to ensure.

[0067] As an optimization, a longitudinal support seat 371 is provided between the driving pulley 33 and the driven pulley 34 in the self-rotation driving mechanism 3 for supporting the synchronous belt 35 .

[0068] Although the driving pulley 33 and the driven pulley 34 can provide support for the synchronous belt, if the distance between the two pulleys of the device is large, it may sag due to gravity. Even if the distance is relatively small, if the middle part of the synchronous belt cannot fully mesh with the pulleys, there will inevitably be a setback during transmission, resulting in uneven speed.

[0069] In view of the above problems, combined with Figure 5 In this embodiment, a support surface 3713 is formed on the top of the longitudinal support seat 371, and the support surface 3713 is located below the synchronous belt 35. According to needs, the support surface 3713 can be set to contact with the synchronous belt 35 or there can be a certain gap so that the synchronous belt 35 can work while meeting the requirements.

[0070] Furthermore, in order to better control the distance between the supporting surface 3713 and the synchronous belt 35, the longitudinal supporting seat 371 can be adjusted in the vertical direction.

[0071] Specifically, a longitudinal adjustment seat 372 is provided below the longitudinal support seat 371 , and a longitudinal adjustment bolt 373 is provided in cooperation with the longitudinal adjustment seat 372 , and the height position of the longitudinal support seat 371 is adjusted by the longitudinal adjustment bolt 373 .

[0072] The longitudinal adjustment seat 372 is fixedly connected to the fixing frame 31, and a slide groove can be provided on the fixing frame 31. A corresponding slider is provided on the longitudinal support seat 371, and the slider cooperates with the slide groove. The longitudinal adjustment seat 372 is rotatably connected to the longitudinal adjustment bolt 373, and the longitudinal adjustment bolt 373 is threadedly engaged with the longitudinal support seat 371. When the longitudinal adjustment bolt 373 is rotated, the longitudinal support seat 371 can be driven to move up and down to adjust its height position.

[0073] Of course, as other implementations, a guide rod may be provided on the longitudinal adjustment seat 372 , and a guide groove may be provided on the longitudinal support seat 371 . The two may cooperate with each other to also realize sliding guidance of the longitudinal support seat 371 .

[0074] As another embodiment, if the distance between the two pulleys is small and no support surface is required, the longitudinal support seat 371 can be used to guide the synchronous belt 35.

[0075] Combination Figure 5 At this time, two flat guide plates 3714 are formed on the upper side of the longitudinal support seat 371, and a guide groove is formed between the two guide plates 3714. The synchronous belt is located in the guide groove to avoid derailment during operation.

[0076] As a preferred embodiment, the longitudinal support seat 371 can be used to achieve both guiding and supporting functions. In this case, a supporting surface 3713 needs to be formed between the two guide plates 3714, and the supporting surface 3713 and the two guide plates 3714 form a guiding groove.

[0077] In order to facilitate processing or installation, the longitudinal support seat 371 can be composed of a support platform 3711 and a connecting seat 3712. The connecting seat 3712 serves as a connection and guide sliding base, and the support surface and the guide groove can be set on the connecting seat 3712. This structure can achieve the rotation stability and radial runout tolerance of the sprocket in the double-speed chain through the depth of the toothed synchronous belt and the toothed pulley.

[0078] As a further optimized implementation method, a transverse tensioning mechanism may be provided on one side of the driven pulley, thereby facilitating the installation of the synchronous belt and enabling better adjustment of the tightness of the synchronous belt.

[0079] Combination Figure 4 As an implementation of the transverse tensioning mechanism, the transverse tensioning mechanism includes a transverse slide 361 and a transverse adjustment seat 362. The driven pulley 34 is installed on the transverse slide 361. The transverse adjustment seat 362 is provided with a transverse adjustment bolt 363. The transverse adjustment bolt 363 drives the driven pulley 34 to move laterally to adjust the distance between the driven pulley 34 and the driving pulley 33.

[0080] Specifically, a transverse slide groove may be provided on the fixing frame 31 , and the transverse slide 361 at least partially penetrates into the slide groove toward one side of the fixing frame 31 , and the slide groove is used for guidance, and the transverse slide 361 is locked on the fixing frame 31 in combination with bolts.

[0081] The transverse adjustment seat 362 is mounted on the fixing frame 31, and the two are fixedly connected by bolts. A transverse adjustment bolt 363 is rotatably connected to the transverse adjustment seat 362, so that the transverse adjustment bolt 363 can rotate freely relative to the transverse adjustment seat 362. The transverse adjustment bolt 363 is threadedly engaged with the transverse slide seat 361, and when the transverse adjustment bolt 363 is rotated, the transverse slide seat 361 can be driven to move left and right.

[0082] In this embodiment, the driven pulley 34 is installed on the transverse slide 361, so that the distance between the driving pulley 33 and the driven pulley 34 can be adjusted, and the meshing between the synchronous belt and the pulley can be better controlled to improve the transmission efficiency.

[0083] Figure 6 , Figure 7 Schematic diagram of the structure of the pulley 12 is shown in FIG. 1 . In this structure, the pulley 12 is a toothed wheel that cooperates with the toothed synchronous belt.

[0084] The pulley 12 is coaxially arranged with the roller 11 and is located on one side of the roller 11. The two are relatively fixed. When the pulley 12 rotates, the roller 11 rotates synchronously with the pulley 12, and the rotation speed of the roller 11 can be controlled by the pulley 12. The pulley 12 is located between the inner chain plate 15 and the roller 11, and the two chain links are connected by the outer chain plate 19.

[0085] In specific implementation, the pulley 12 and the roller 11 can be fixedly mounted on the roller pin 14. At this time, the two ends of the roller pin 14 need to be rotatably connected with the sleeve 13. The driving force of the sprocket 2 acts on the sleeve 13 to ensure that the roller 11 can rotate. The sleeve 13 here can be a bearing, for example, the sleeve 13 is a needle guide bearing. Alternatively, the sleeve 13 can be a cylindrical cylinder connected to the roller pin 14 through a bearing, the main purpose of which is to facilitate its rotation.

[0086] Combination Figure 8 As another embodiment of the pulley, the pulley 12 is located at one end of the roller 11, and the two form an integral structure, and bearings are arranged at both ends of the integral structure. Figure 8 In the embodiment, a groove is provided on one side of the roller 11, and the middle part of the pulley 12 protrudes into the groove, and the two are connected into a whole by a positioning pin 18. Roller bearings 17 are provided at both ends of the structure, and the roller bearings 17 are connected to the middle roller pin 14. In this embodiment, the sleeve 13 is a needle guide bearing, so as to improve the stability of its rotation. A gasket 16 is provided on the outside of the sleeve 13, and a pin is used to limit the axial position of the gasket 16 to prevent it from falling out.

[0087] During implementation, other connection structures may also be used, with the purpose of achieving relative fixation of the pulley 12 and the roller 11, and enabling rotation relative to the roller pin 14, and are not limited to the above preferred embodiments.

[0088] Combination Fig. 9 Based on the above-mentioned double-speed chain transmission device, the present invention provides a roller line scanning detection system, including the above-mentioned double-speed chain transmission device and the line scanning detection device. The double-speed chain transmission device is used to transmit the roller. The line scanning detection camera 5 in the line scanning detection device is correspondingly arranged above the self-rotation drive mechanism 3 in the double-speed chain transmission device. When the roller 11 self-rotates and drives the roller 4 to rotate, the line scanning detection camera 5 continuously takes pictures of the roller 4 for detection. The processing system of the line scanning detection device can analyze and process the images taken by the line scanning detection camera to realize the analysis of the surface defects of the roller by the line scanning detection camera.

[0089] A line scanning detection camera can be provided to detect defects on the outer cylindrical surface of the roller 4.

[0090] As another embodiment, there are at least two line scan inspection cameras, one of which is used to detect defects on the outer cylindrical surface of the roller 4, and the other is used to detect defects on the chamfer or side of the roller 4.

[0091] As another embodiment, three line scan detection cameras may be provided, one of which is used to detect defects on the outer cylindrical surface of the roller 4 , and the other two are used to detect chamfers or side defects on both sides of the roller 4 .

[0092] When two or more line scan inspection cameras are used for surface defect inspection, one roller 4 can be inspected at the same time. In this embodiment, multiple line scan inspection cameras correspond to the roller 4 at the same work station.

[0093] As another embodiment, different line scan inspection cameras can be respectively set at two or three stations to successively inspect the same roller 4, and each station can inspect a surface of the roller. In this structure, the synchronous belt 35 needs to correspond to more stations, that is, the working section of the synchronous belt 35 corresponds to multiple rollers 11 to ensure that it can simultaneously drive multiple inspected rollers.

[0094] As a preferred embodiment, when a synchronous belt 35 structure is adopted, the synchronous belt 35 cooperates with the pulleys 12 on at least three roller pins 14 at the same time to form at least one buffer station and at least one detection station, and the roller 4 enters the detection station via the buffer station.

[0095] When conducting inspection, the first station where the roller enters the synchronous belt can be used as the inspection station. However, when conducting inspection, the synchronous belt rotates at high speed, and the roller that is relatively stationary with the wheel is suddenly accelerated, which may cause the roller to be thrown out. In addition, it takes time for the roller to be accelerated, and a pause is required in the middle. If the inspection is started when entering the inspection station, the rotation speed will be uneven due to the acceleration, which may lead to missed inspections.

[0096] The present invention also provides a roller line scanning detection method. When implementing the method, the equipment used includes a double-speed chain transmission device and a line scanning detection device. The double-speed chain transmission device is used to transmit the roller, and the line scanning detection device is used to realize line scanning detection.

[0097] Combination Fig.10 , the specific detection includes the following steps:

[0098] Step 1, start the device and use the double-speed chain transmission device to perform roller transmission. The roller is supported between two rollers 11 of the double-speed chain transmission device and moves intermittently with the double-speed chain group 1.

[0099] The self-rotation drive mechanism of the double-speed chain transmission device cooperates with the double-speed chain group to form a detection station section; after starting, in the detection station section, the self-rotation drive mechanism drives the roller to rotate continuously.

[0100] The movement speed of the above-mentioned double-speed chain group is relatively low, and it is intermittent motion, and a motor is used to drive the sprocket to rotate a certain angle each time, and then move again after an intermittent stop to realize the transmission of the roller.

[0101] When implementing this method, the double-speed chain transmission device used can be other chain transmission devices, which can be composed of a double-speed chain and a self-rotation drive part. The double-speed chain must be able to realize the transmission transportation of the roller, and the self-rotation drive part is to be able to drive the roller to rotate and drive the roller to be detected to rotate.

[0102] Step 2: The roller is transported to the inspection station through the movement of the double-speed chain group 1. The inspection station is a station in the inspection station section area. In the inspection station, the roller 11 drives the transmitted roller to rotate.

[0103] The line scanning inspection camera in the line scanning inspection device is installed at the inspection station. Each station can only install one inspection camera; or multiple line scanning inspection cameras can be installed from different angles to inspect different surfaces of the roller. The inspection station position is fixed, and different rollers pass through the inspection station one by one.

[0104] Step 3, the double-speed chain group 1 stops moving, the self-rotation drive mechanism 3 drives the roller to rotate, and the line scanning detection camera in the line scanning detection device continuously takes pictures and detects the rollers at the detection station.

[0105] During the inspection, the double-speed chain set 1 is in a rest period, and the roller rotates rapidly under the drive of the self-rotation drive mechanism 3, and its operating speed is matched with the shooting frequency of the line scanning detection camera to achieve a comprehensive inspection of the roller surface. The operating speed of the self-rotation mechanism and the shooting frequency of the line scanning detection camera can be adjusted according to actual needs, and will not be repeated.

[0106] Step 4: The double-speed chain set 1 moves, and the next roller to be inspected is transferred to the inspection station for inspection in the order of steps 2 and 3.

[0107] Based on the above detection method, it is not necessarily limited to the double-speed chain transmission device specifically limited by the present invention, and an ordinary double-speed chain transmission device can also be used, and the roller needs to be driven to rotate. For example, a belt transmission device that can be raised and lowered is set, the roller is fixed on the roller pin, and a driving secondary wheel is set on the pin. When the roller moves to the detection station, the belt transmission device is raised, so that the transmission belt cooperates with the driving secondary wheel, so that the roller can be driven to rotate, and then the roller is driven to rotate.

[0108] It is worth noting that when the roller is driven, the self-rotation driving part does not directly apply the driving force to the roller surface, but drives the drum shaft or the extended connecting part of the roller.

[0109] As a more preferred option, when implementing the above method, the double-speed chain transmission device is the transmission device to be protected by the present invention, which is composed of a double-speed chain group 1, a sprocket 2 and a self-rotation drive mechanism 3. The synchronous belt 35 in the self-rotation drive mechanism is a toothed synchronous belt, and is supported by a driving pulley 33 and a driven pulley 34 in the self-rotation drive mechanism 3. The pulley 12 is a toothed wheel that cooperates with the toothed synchronous belt. The specific structure can refer to the description of the above embodiments.

[0110] As a further improvement and optimization of the detection method, step 2 includes a step of buffering and accelerating the roller; a buffer station is configured at the beginning of the detection station section, and the roller 4 enters the detection station after passing through the buffer station.

[0111] In addition, step 3 may also include the step of detecting surface defects at different positions of the roller; there are multiple inspection stations in the inspection station section, and the inspection cameras corresponding to different inspection stations are set at different angles, which are used for defect detection on the outer cylindrical surface, side surface or chamfered surface of the corresponding roller.

[0112] During operation, the roller 11 is used to drive the speed chain set 1 to rotate, and the roller is relatively stationary with the roller 11 and moves synchronously with the roller 11. When the roller 11 moves to the position of the self-rotation drive mechanism 3, the pulley 12 connected to the roller 11 engages with the synchronous belt 35. At this time, the speed chain set 1 stops rotating, and the roller rotates synchronously under the drive of the synchronous belt 35, thereby causing the roller on the roller 11 to rotate. This station serves as a buffer station to accelerate the roller. Then the roller enters the detection station, and the roller is photographed and detected using a line scan camera.

[0113] In a preferred embodiment of the present invention, the synchronous belt is a toothed synchronous belt, and the pulley is a toothed pulley, the two are meshed with each other, and the active pulley is driven by a motor to achieve precise control of the rotation speed and number of turns of the roller, so that it can better cooperate with the line scan camera for detection, which helps to improve product quality.

[0114] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A roller line scanning detection system, characterized in that: A double-speed chain transmission device is used, the double-speed chain transmission device comprises a double-speed chain group (1) and a sprocket (2), the roller (11) in the double-speed chain group (1) is mounted on a roller pin shaft (14), and the double-speed chain group (1) cooperates with the sprocket (2); and further comprises a self-rotation drive mechanism (3), the self-rotation drive mechanism (3) comprises a synchronous belt (35) and a pulley (12) arranged on the roller pin shaft (14), the pulley (12) and the roller (11) are relatively fixed, and when the synchronous belt (35) runs, the roller (11) is driven to rotate via the pulley (12); The synchronous belt (35) is a toothed synchronous belt and is supported by a driving pulley (33) and a driven pulley (34) in the self-rotating drive mechanism (3); the pulley (12) is a toothed wheel that cooperates with the toothed synchronous belt; It also includes a line scanning detection device, in which a line scanning detection camera is correspondingly arranged above the self-rotation drive mechanism (3), and when the roller (11) self-rotates to drive the roller (4) to rotate, the line scanning detection camera continuously takes pictures of the roller (4) for detection; A longitudinal support seat (371) is provided between the driving pulley (33) and the driven pulley (34) in the self-rotating drive mechanism (3) and is used to support and / or guide the synchronous belt (35); A longitudinal adjustment seat (372) is provided below the longitudinal support seat (371), and a longitudinal adjustment bolt (373) is provided in cooperation with the longitudinal adjustment seat (372), and the height position of the longitudinal support seat (371) is adjusted by means of the longitudinal adjustment bolt (373); The top of the longitudinal adjustment seat (372) is a support surface (3713), and raised guide plates (3714) are formed on both sides of the support surface (3713), and the synchronous belt (35) is located between the guide plates (3714); A transverse tensioning mechanism is provided on one side of the driven pulley (34) in the self-rotating driving mechanism (3), comprising a transverse slide seat (361) and a transverse adjustment seat (362); the driven pulley (34) is mounted on the transverse slide seat (361); a transverse adjustment bolt (363) is provided on the transverse adjustment seat (362); the driven pulley (34) is driven to move transversely by the transverse adjustment bolt (363), and the distance between the driven pulley (34) and the driving pulley (33) is adjusted.

2. A roller line scanning detection system according to claim 1, characterized in that: The two ends of the roller pin shaft (14) are rotatably connected to a sleeve (13), and the driving force of the sprocket (2) acts on the sleeve (13).

3. A roller line scanning detection system according to claim 2, characterized in that: The sleeve (13) is a needle roller guide bearing.

4. A roller line scanning detection system according to claim 2, characterized in that: The pulley (12) and the roller (11) are both fixedly connected to the roller pin (14).

5. The roller line scanning detection system according to claim 2, characterized in that: The roller (11) is connected to the roller pin (14) via a bearing, and the pulley (12) is fixed on one side of the roller (11); Or: the pulley (12) is located at one end of the roller (11), and the two form an integral structure, and bearings are arranged at both ends of the integral structure.

6. A roller line scanning detection system according to claim 1, characterized in that: There are at least two line scan detection cameras, one of which is used to detect defects on the outer cylindrical surface of the roller (4), and the other of which is used to detect defects on the chamfer or side of the roller (4).

7. A roller line scanning detection system according to claim 6, characterized in that: The two line scan detection cameras detect a roller (4) at the same time, or are arranged at two workstations to detect the same roller (4) in sequence.

8. The roller line scanning detection system according to claim 1, characterized in that: When a synchronous belt (35) structure is used, the synchronous belt (35) cooperates with the pulleys (12) on at least three roller pins (14) at the same time to form at least one buffer station and at least one detection station, and the roller (4) enters the detection station via the buffer station.

9. A roller line scanning detection method, characterized in that: Applied to the roller line scanning detection system of any one of claims 1 to 8, the adopted equipment includes a double-speed chain transmission device and a line scanning detection device, and the specific detection includes the following steps: Step 1, starting the device, using the double-speed chain transmission device to perform roller transmission, the roller is supported between two rollers (11) of the double-speed chain transmission device, and moves intermittently with the double-speed chain group (1); The self-rotation drive mechanism (3) in the double-speed chain transmission device cooperates with the double-speed chain group (1) to form a detection station section; after starting, in the detection station section, the self-rotation drive mechanism (3) drives the roller (11) to rotate continuously; Step 2: The roller is transported to the inspection station through the movement of the double-speed chain group (1), and the inspection station is a station in the inspection station section area. At the inspection station, the roller (11) drives the transported roller to rotate; Step 3, the double-speed chain group (1) stops moving, the self-rotation drive mechanism (3) drives the roller to rotate, and the line scanning detection camera in the line scanning detection device continuously takes pictures of the roller at the detection station; Step 4: The double-speed chain assembly (1) moves, and the next roller to be inspected is transferred to the inspection station for inspection in the order of steps 2 and 3.

10. A roller line scanning detection method according to claim 9, characterized in that: Step 2 includes a step of buffering and accelerating the roller; a buffer station is arranged at the beginning of the detection station section, and the roller (4) enters the detection station after passing through the buffer station.

11. A roller line scanning detection method according to claim 9, characterized in that: Step 3 includes the step of detecting surface defects at different positions of the roller; there are multiple inspection stations in the inspection station section, and the inspection cameras corresponding to different inspection stations are set at different angles, which are used for defect detection on the outer cylindrical surface, side surface or chamfered surface of the corresponding roller.

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