阅读说明：本技术 一种缺陷检测机构及带有缺陷检测机构的辊子辊面清理刮刀 (Defect detection mechanism and roller surface cleaning scraper with same ) 是由 杜昕 王海 高伟民 韩久彦 张国堂 于 2019-10-18 设计创作，主要内容包括：一种缺陷检测机构及带有缺陷检测机构的辊子辊面清理刮刀,其缺陷检测机构有PLC控制系统和活动检测片,其安装在检测片安装支架上,检测片安装支架的另一端嵌入活动支架的检测片安装卡槽内；活动支架的上臂和检测转动臂的上端面之间对称安装有预紧力的复位弹簧,所述活动支架的下臂和检测转动臂内在其上端面底面连接的测量臂处于接触状态,而活动支架的下臂的端头安装遮挡块,相适配的,在检测转动臂的测量臂的端头安装光电检测元件；光电检测元件和所述PLC控制系统电连接。本发明灵敏度和可靠性较高,有受到顽固异物时不损坏检测机构,检测机构有微转动机构,做到顽固异物卡在检测片上时受到弹簧伸缩,保护检测机构的检测片、检测元件不受外力损坏。(A defect detection mechanism and a roller surface cleaning scraper with the defect detection mechanism are disclosed, wherein the defect detection mechanism is provided with a PLC control system and a movable detection sheet, the defect detection mechanism is arranged on a detection sheet mounting bracket, and the other end of the detection sheet mounting bracket is embedded into a detection sheet mounting clamping groove of the movable bracket; reset springs with pretightening force are symmetrically arranged between the upper arm of the movable support and the upper end surface of the detection rotating arm, the lower arm of the movable support and the measurement arm connected with the bottom surface of the upper end surface in the detection rotating arm are in a contact state, the end head of the lower arm of the movable support is provided with a blocking block, and a photoelectric detection element is arranged at the end head of the measurement arm of the detection rotating arm in a matching way; and the photoelectric detection element is electrically connected with the PLC control system. The invention has higher sensitivity and reliability, does not damage the detection mechanism when being subjected to stubborn foreign matters, and the detection mechanism is provided with a micro-rotation mechanism, so that the stubborn foreign matters are stretched by the spring when being clamped on the detection sheet, and the detection sheet and the detection element of the detection mechanism are protected from being damaged by external force.)

1. A defect detection mechanism comprises a PLC control system and is characterized in that the defect detection mechanism (301) comprises a movable detection sheet (302), the movable detection sheet (302) is installed on a detection sheet installation support (3012), and the other end of the detection sheet installation support (3012) is embedded into a detection sheet installation clamping groove (3014) of a movable support (3018); reset springs (3016) with pretightening force are symmetrically arranged between the upper end faces of an upper arm (30181) of the movable support (3018) and the detection rotating arm (3021), and a movable support guide rod (3019) arranged on the upper arm (30181) of the movable support (3018) is sleeved in a movable support guide rod limiting rod (3020) arranged on the upper end face of the detection rotating arm (3021) to form a guide device; the lower arm (30182) of the movable support (3018) and the measuring arm (30211) connected with the bottom surface of the upper end surface of the lower arm (3021) are in a contact state, a shielding block is arranged at the end head of the lower arm (30182) of the movable support (3018), and a photoelectric detection element (3017) is arranged at the end head of the measuring arm (30211) of the detecting rotating arm (3021) in a matching manner; and the photoelectric detection element (3017) is electrically connected with the PLC control system.

2. A defect detecting mechanism according to claim 1, wherein a detecting mechanism protecting cover (3015) is mounted on an upper end face of the detecting rotary arm (3021).

3. A roller surface cleaning scraper with a defect detection mechanism according to claim 1, comprising a roller, characterized in that a scraper running device is arranged on the side surface of the roller (2), and the scraper running device comprises a dust suction box (405) and a scraper driving bracket (3) connected with the dust suction box; the detection rotating arm (3021) is rotatably connected to a detection arm rotating support frame (303) on the scraper driving support (3) through a base mounting hole (3022) at the lower part of the detection rotating arm; the scraper (401) is installed on the scraper driving support (3), one end of the scraper (401) is in contact with the surface of the roller (2), the other end of the scraper is connected with the motor (4), and the motor (4) is electrically connected with the PLC control system.

4. The roller surface cleaning scraper with the defect detection mechanism is characterized in that one end of a dust suction pipeline support (402) is connected with a motor (4) and then drives a scraper (401), a dust suction pipeline (403) is installed on the dust suction pipeline support (402), one end of the dust suction pipeline (403) is connected with a dust suction port (404), and the other end of the dust suction pipeline (403) is communicated with a dust suction box (405); the dust suction port (404) is arranged above the scraper (401).

Technical Field

The invention relates to the technical field of belt cleaning scrapers of hot galvanizing and cold rolling high-speed production lines, in particular to a defect detection machine and a roller surface cleaning scraper with the defect detection mechanism.

Background

The roller surface scraper used in the traditional continuous production line adopts an integral scraper which is wider than the roller surface or a small scraper with a narrow section which moves back and forth on a track to clean the roller surface, but the cleaning effect is poor, and a plurality of problems exist, firstly, the integral scraper which is wider than the roller surface is a scraper which is driven by a cylinder, an electric cylinder, a hydraulic cylinder and the like or driven by an air bag, and the cleaning effect has the problems that the integral blade of the scraper has certain rigidity, the contact pressure at each position of the roller surface is different after the cutting edge integrally contacts the roller surface, the integral blade has the defects of premature wear of local points after being heated or deformed, the cleaning effect is poor, the integral wide scraper driven by the air bag can improve a plurality of the defects, but the influence caused by the wide scraper still exists, and the problem that the contact pressure of the wide scraper on the roller surface is basically equal or the contact pressure is uniform can not be fundamentally solved, after the scraper is used for a period of time, the scraper deforms, the cutting edge becomes dull, the effect of cleaning the roller surface by the scraper is lost, and the deformation of the cutting edge of the scraper is too large in serious conditions, so that the influence of damaging the roller surface by the cutting edge of the scraper is also caused.

Especially, the length of the roller body of the roller used in most of the cold rolling high-speed production line reaches 1500-2000mm, the longer the roller body is, the whole wide scraper is easily damaged by the influence of deformation or uneven stress of the scraper, or the contact pressure is not enough, the part needing to be cleaned is not cleaned, and the damaged roller surface is excessively cleaned in the place needing not to be cleaned.

Under narrow and normal process conditions of a unit, dust or other foreign matters cleaned by the scraper are not easy to clean out in time, the scraper dust collecting box cannot play a good role, and the roller surface damage or color difference defect along the circumference of the roller in the radial direction is formed on the roller surface when the roller is used for a long time due to the fact that the foreign matters cleaned after the blade is tightly attached to the roller surface are unreasonably designed and clamped between the blade and the roller surface.

The roller with the convexity on the roller is influenced by the convexity of the roller surface, the contact pressure of the blade of the scraper is large in the middle, the contact pressure of the two ends is small or not in contact, the blade of the scraper is unevenly stressed and damaged early, the local pressure of the middle contact is large, when the two sides and the middle contact part are consistent, the blades at the two ends are just used, but the blade in the middle is in a scrapped state, if the middle of the roller surface is affected by the damage of the blade due to untimely replacement, the roughness is reduced, and the roller surface coating is damaged or scratches the roller surface.

The small narrow-section scrapers moving back and forth are less used at present, and the overall problem is that the main problems of the narrow-section scrapers in the use process are as follows: firstly, the scraper moving speed and the roller rotating speed are higher in requirements on cleaning the roller surface, when foreign matters exist on the cleaning roller surface and are generated immediately, an automatic intelligent mode is not available, the scraper can only clean the point twice in a transverse moving mode, if the pressure for cleaning the point is small or the foreign matters are difficult to clean, the longer the time the foreign matters exist, the larger the influence on the quality of the produced product is, the product degradation or the waste products are generated after the judgment standard is exceeded, the production line can be decelerated or stopped when the defect is not processed in short-time inspection, and the influence on the production line is larger. Secondly, the ash receiving box cleaned by the narrow-section scraper is in a long strip shape and is in an integral structure state, and although the ash receiving box is used, the cleaned foreign matters or dust are in a free-falling mode, so that fine small particles can be taken away by the environmental factors and the air flow formed after the high-speed running of the strip steel and adsorbed on the surface of the roll again along with the surface of the roll, and secondary pollution is caused.

Disclosure of Invention

The invention provides a defect detection mechanism and a roller surface cleaning scraper with the same, and solves a series of problems of uneven contact pressure of a scraper on a roller surface in a wide scraper and problems of long cleaning period and incapability of thoroughly solving fine particles in a narrow section scraper in the prior art.

The technical scheme adopted by the invention is that

A defect detection mechanism comprises a PLC control system, and comprises a movable detection sheet, wherein the movable detection sheet is arranged on a detection sheet mounting bracket, and the other end of the detection sheet mounting bracket is embedded into a detection sheet mounting clamping groove of the movable bracket; a movable bracket guide rod arranged on the upper arm of the movable bracket is sleeved in a movable bracket guide rod limiting rod arranged on the upper end surface of the detection rotating arm to form a guide device; the lower arm of the movable support and the measuring arm connected with the bottom surface of the upper end surface of the detection rotating arm are in a contact state, the end head of the lower arm of the movable support is provided with a blocking block, and the end head of the measuring arm of the detection rotating arm is provided with a photoelectric detection element in a matching way; and the photoelectric detection element is electrically connected with the PLC control system.

The detection mechanism protection cover is installed on the upper end face of the detection rotating arm.

The scraper operation device comprises a dust suction box and a scraper driving support connected with the dust suction box; the detection rotating arm is rotatably connected to a detection arm rotating support frame on the scraper driving support through a base mounting hole at the lower part of the detection rotating arm; and a scraper is arranged on the scraper driving support, one end of the scraper is in contact with the surface of the roller, the other end of the scraper is connected with a motor, and the motor is electrically connected with the PLC control system.

One end of the dust absorption pipeline support is connected with the motor and then follows the scraper, a dust absorption pipeline is arranged on the dust absorption pipeline support, one end of the dust absorption pipeline is connected with the dust absorption port, and the other end of the dust absorption pipeline is communicated with the dust absorption box; the dust absorption opening is arranged above the scraper.

The foreign matter detection device adopts a telescopic detection mechanism with a spring mechanism, has a photoelectric detection element capable of adjusting contact pressure and judging foreign matters, has higher sensitivity and reliability, does not damage the detection mechanism when being subjected to stubborn foreign matters, and has a micro-rotating mechanism which can stretch and contract the stubborn foreign matters when being clamped on a detection sheet by the spring so as to protect the detection sheet and the detection element of the detection mechanism from being damaged by external force.

Drawings

FIG. 1 is a schematic structural view of the present invention in an operating state;

FIG. 2 is a top view of the present invention;

FIG. 3 is a front view of the present invention;

reference numbers in the figures: 1. strip steel; 2. a roller; 3. a scraper drive bracket; 4. a motor; 301. a defect detection mechanism; 302. a movable detection sheet; 303. the detection arm rotates the support frame; 3012. a detection sheet mounting bracket; 3013. detecting a sheet mounting hole; 3014. the detection sheet is provided with a clamping groove; 3015. a detection mechanism protective cover; 3016. a return spring; 3017. a photoelectric detection switch; 3018. a movable support; an upper arm, 30181; a lower arm 30182; 3019. a movable bracket guide rod; 3020. a movable bracket guide rod limiting rod; 3021. detecting a rotating arm; a measuring arm, 30211; 3022. rotating the base mounting hole; 401. a scraper; 402. a dust collection pipeline bracket; 403. a dust collection pipeline; 404. a dust suction opening of the dust suction pipe; 405. a dust collection box.

Detailed Description

The invention and its effects are further explained below with reference to the drawings and the detailed description.

Referring to fig. 2 and 3, a defect detecting mechanism comprises a PLC control system, the defect detecting mechanism 301 comprises a movable detecting plate 302, the movable detecting plate 302 is mounted on a detecting plate mounting bracket 3012 through a detecting plate mounting hole 3013 of the detecting plate mounting bracket 3012, and the other end of the detecting plate mounting bracket 3012 is embedded in a detecting plate mounting slot 3014 in the center of the movable bracket 3018; a reset spring 3016 with pretightening force is symmetrically installed between an upper arm 30181 of the movable support 3018 and the upper end face of the detection rotating arm 3021, and a movable support guide rod 3019 arranged on the upper arm 30181 of the movable support 3018 is sleeved in a movable support guide rod limiting rod 3020 arranged on the upper end face of the detection rotating arm 3021 to form a guide device; the movable support 3018 is forced by two reset springs 3016 to make the movable support 3018 close to the stressed end of the detecting rotating arm 3021, the movable support 3018 is affected by the stress of the springs to prevent the movable support 3018 from deflecting after being stressed, a sleeve consisting of a movable support guide rod 3019 and a movable support guide rod 3020 is connected between the movable support 3018 and the detecting rotating arm 3021 to limit the moving track of the movable support 3018, an accurate sensing movable detecting piece 302 is blocked by a foreign object and transmits the force to the movable support 3018, the lower arm 30182 of the movable support 3018 and the measuring arm 30211 connected to the bottom surface of the upper end face in the detecting rotating arm 3021 are in a contact state, the end of the lower arm 30182 of the movable support 3018 is installed with a blocking block, and a photoelectric detecting element 3017 is installed on the end of the measuring arm 30211 of the detecting rotating arm (3021); the photoelectric detection element 3017 is electrically connected to the PLC control system. After the movable support 3018 is pushed by the movable support 3018, the movable support 3018 moves backwards, the blocking block of the photoelectric detection switch moves backwards, the moving direction of the blocking block is consistent with the moving direction of the movable support 3018, and the blocking block cannot be detected by the photoelectric detection switch, and the roller surface is judged to have foreign matters, so that important cleaning is needed. The switch of the photoelectric detection switch is used as a signal source for judging whether the roller surface is abnormal or not, the running position and the running track of the scraper are driven, and when the scraper 401 is put into the device, the forced air suction fan is started to ensure that dust and foreign matters cleaned by the scraper 4 are sucked into the dust suction box 405 through the connected hose.

The detection mechanism cover 3015 is attached to the upper end surface of the detection rotary arm 3021. The spring mechanism which protects the detection mechanism and the effectiveness of the detection electronic component. Two rotary base mounting holes 3022 are formed in two ends of the rear portion of the detection rotary arm 3021, so that the detection rotary arm can rotate after being subjected to large abnormal thrust, and the integrity of the detection mechanism is protected.

Referring to fig. 1, a roll surface cleaning doctor with a defect detecting mechanism includes a roll 2, a strip 1 running on the roll surface of the roll 2 to be cleaned according to the direction of rotation of the roll shown in fig. 1, the strip 1 running horizontally away from the roll surface. A scraper running device is arranged on the side surface of the roller 2, and comprises a dust suction box 405 and a scraper driving bracket 3 connected with the dust suction box; the detection rotating arm 3021 is rotatably connected to the detection arm rotating support frame 303 on the scraper driving support 3 through a base mounting hole 3022 at the lower part of the detection rotating arm 3021; the scraper driving bracket 3 is provided with a scraper 401, one end of the scraper 401 is contacted with the surface of the roller 2, the other end of the scraper 401 is connected with a motor 4, and the motor 4 is electrically connected with a PLC control system.

One end of a dust suction pipeline support 402 is connected with the motor 4 and then follows the scraper 401, a dust suction pipeline 403 is arranged on the dust suction pipeline support 402, one end of the dust suction pipeline 403 is connected with a dust suction port 404, and the other end of the dust suction pipeline 403 is communicated with a dust suction box 405; the suction opening 404 is positioned above the blade 401. The dust box 405 can be taken out for cleaning when the scraper moves to the edge of the roller, and along with the throwing in or opening of the scraper, the dust suction pipe dust suction port 404 connected with the dust suction pipeline 403 moves along with the movement of the scraper support, so that synchronous action is kept, and dust and foreign matters cleaned by the dust suction fan of the dust suction pipeline adsorbing the scraper are ensured to fall into the dust box 405 when the scraper is thrown in.